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Date submitted2007-07-27
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Date accepted2007-09-24
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Date published2008-01-01
PB- and SR-isotopes – indicators for mixing processes in mine waters of the «Himmelfahrt Fundgrube»
- Authors:
- Heidel Claudia
Lead and Strontium isotope ratios in mine waters were investigated to pinpoint Pb and Sr sources and mixing processes of waters in the abandoned mine «Himmelfahrt Fundgrube» (Freiberg, Germany). Both Pb- and Sr-isotope compositions have shown the important role of gangue carbonates as an element source that could not be revealed by former oxygen and sulphur isotope studies.
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Date submitted2007-07-15
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Date accepted2007-09-15
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Date published2008-01-01
Features of engineering-geological surveys in areas of eluvial soil development (on the example of Nizhnekamsk)
- Authors:
- I. I. Nugmanov
A complex investigation of composition, physical and stress-and-strain properties of eluvial soils was carried out for the urban industrial zone of Nizhnekamsk. Dominating factors determining inhomogenity of the ground strata were revealed. Characteristics of eluvial soils formed on terrigenic (Nizhnekamsk) and carbonate (Kazan) Upper Permian sedimentary rocks were compared. Possible changes in properties of the eluvial grounds subjected to increasing industrial load were predicted.
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Date submitted2007-07-23
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Date accepted2007-09-03
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Date published2008-01-01
Wave principle of substantiation of the boundaries of hydrodynamic influence of geotechnical systems
- Authors:
- A. A. Lukin
The main goal of the investigation was to numerically determine and apply wave characteristics in a pressure-tight field in justification of the hydrodynamic influence limits in geotechnical systems. However, that research dealt with two problems: studies of wave processes and phenomena in water-pressure systems and justification of new material criteria and assessment techniques to estimate limits of hydrodynamic influence on interiors of a large variety of geotechnical systems (i.e. underground water intake structures, subsurface waste disposals, oil-and-gas fields, etc.). The following two tasks of the investigation were solved: computer simulation of harmonic low-frequency excitation of a pressure-tight hydrodynamic field from a single well (formulation and solution of the problem as experiment planning); modelling of a natural pressure-tight field in real conditions of non-uniform discontinuous industrial mode of pumping liquid wastes from a chemical plant.
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Date submitted2007-07-08
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Date accepted2007-09-28
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Date published2008-01-01
Study of possibilities of geophysical methods in connection with geological modeling of hydrocarbon deposits
- Authors:
- B. V. Belozerov
A detail analysis of existing geological modeling technologies is made and correlations between parameters in simulation of lithological-petrophysical, hydrodynamic and geophysical fluid systems are revealed. Optimal character and feasibility of basic modeling units – the hydraulic unit of the flow and the complex parameter – are noted. Causes of collectors heterogeneity are specified. The influence of shaliness, the type of the shale and the grain-size structure on the complex parameter is specified.
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Date submitted2007-07-30
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Date accepted2007-09-12
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Date published2008-01-01
Petrological characterization of montsogranites and granosigenites of the Ubukunskoye ore occurrence
- Authors:
- N. A. Grebenkin
- V. V. Suchkov
Granites with monzonitic structure and granosienites represent early and late phases of intrusion development. Crystallization of granites takes place with deanortitization of plagioclase and incongruent formation of К-Na-feldspar. Granosienites are characterized with cotectic crystallization. Changes in granosienites at the acid stage lead to albitization of the K-Na-feldspar, chloritization of biotite and large-scale development of pyrite with Cu, Cd, Zn, Pb impurities. The late alkaline stage is characterized with sedimentation of Ca as calci-spar.
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Date submitted2007-07-08
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Date accepted2007-09-05
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Date published2008-01-01
Hydrogeochemical conditions of the eastern slope of the Polar Urals
- Authors:
- N. V. Guseva
The article studies chemical composition of natural waters of the eastern slope of the Polar Urals. The balance condition of natural waters with rock-forming minerals is analyzed and geochemical types of waters are determined on its basis. Distribution of chemical elements in various geochemical types of water is considered. Changes in migration patterns depending on the environmental conditions are analyzed on the example of rare-earth elements.
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Date submitted2007-07-07
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Date accepted2007-09-17
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Date published2008-01-01
Geometrization of deposits with commercial hydrocarbon content in volcanogenic formations of triassic age based on the complex of geological and geophysical data
- Authors:
- E. V. Efimova
The work considers determination of geological and geophysical features that would allow determining areas with low and high development indices within deposits of volcanogenic trias. GIS data, data on contents of rare-earth elements in the rock and 3D seismic interpretation were used in the research.
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Date submitted2007-07-11
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Date accepted2007-09-09
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Date published2008-01-01
Causes of oil deposits zonality formation in carbonate reservoirs on the example of oil deposits in the south-east of the Republic of Tatarstan
- Authors:
- A. N. Kolchugin
Zonal structure of oil deposits in carbonate collectors is caused by the several reasons. The main ones are mineralogical and lithological heterogeneity of sedimentary rocks and physical and chemical evolution of deep streams in time. Good ability of carbonates to be exposed to transformations by secondary processes has allowed establishing general regularities in the sequence of the deposit formation.
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Date submitted2007-07-02
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Date accepted2007-09-24
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Date published2008-01-01
Prospects of the Upper Pechora Depression for oil and gas in Perm Krai
- Authors:
- S. N. Krivoshchekov
The Upper-Pechora Depression is a new object in prospecting for oil and gas in the Perm Region. This depression is located in the north of the Perm Region and only part of it lies in the region. The depression is poorly studied. Prospecting is carried out in reefs D3-C1 of t age and enveloping structures. There exist 4 revealed structures and 8 structures prepared for deep drilling on the territory of the depression.
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Date submitted2007-07-08
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Date accepted2007-09-05
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Date published2008-01-01
Modeling the solution gas drive process in heavy oils
- Authors:
- Mehdi Chraïbi
- Stéphane Zaleski
- Fabienne Franco
Primary heavy oil recovery relies on the Solution Gas Drive mechanism, which has been the object of many recent research efforts. Current models are unreliable, and it is likely that they do not represent important physical effects. Here, we introduce a Darcy scale model in which the relative permeability of the gas phase is replaced by a new expression for the gas phase velocity based on the relative strength of viscous, gravity and capillary effects.
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Date submitted2007-07-04
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Date accepted2007-09-11
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Date published2008-01-01
Removing cuttings from deviated and horizontal wells
- Authors:
- Sandoiu Gheorghe-Florin
Effective cuttings transport is critical in drilling production horizontal and extended reach wells. In these cases, failure to remove drill cuttings from the hole would lead to deposition and accumulation of cuttings in the annulus, resulting in stuck pipe, eccentric annulus and/or reduced penetration rate.
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Date submitted2007-07-24
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Date accepted2007-09-08
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Date published2008-01-01
Development and bench testing of sealing of high speed roller cone bits supports
- Authors:
- S. Yu. Baigareev
The design has a radial seal with improved spring properties. The seal allows its use in drill bits with two or more bearings without friction. Laboratory tests have shown lower abrasion coefficients of the sealing unit compared to serial ones. The compaction can be used in the system of forced lubrication of the drill bit, which will further reduce the rate of abrasive wear and ensure the bit operation at increased rotational speed.
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Date submitted2007-07-17
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Date accepted2007-09-09
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Date published2008-01-01
Prevention of corrosion and salt deposition by inhibiting foam systems in wells of North-West Bashkortostan fields
- Authors:
- B. R. Gilmutdinov
At the late stage of development of oil fields in Bashkortostan, well operation is accompanied by corrosion and salt deposition in underground equipment. The study of elemental composition of accumulations and sediments carried out with the help of energy dispersive X-ray spectrometer "Mini Pal" allowed to determine more precisely the mineral composition of sediments. Traditional methods of corrosion and salt deposition control do not allow to effectively protect the wellbore space. A fundamentally new method of equipment protection was developed and tested, which consists in injection of a composition inhibiting corrosion and salt deposition in a foamy form into the annular space. Tests of the proposed technology conducted at the Arlanskoe field allowed to establish the mechanisms of corrosion rate change after treatment and to work out the treatment technology. The treatments provided 2.3-2.9 times increase of effective protection period. The use of nitrogen as a foaming agent makes the technology commercially safe and environmentally friendly.
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Date submitted2007-07-13
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Date accepted2007-09-19
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Date published2008-01-01
Solution of problems of water flooding of high-viscosity oil deposits in carbonate reservoirs
- Authors:
- V. V. Mukhametshin
New methods based on the generalization of experience in the organization of waterflooding of complex low-productive reservoirs of high-viscosity oil have been obtained, allowing to solve the problems of analysis, control, regulation and design of the operation process using modern geological information about oil fields.
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Date submitted2007-07-14
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Date accepted2007-09-10
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Date published2008-01-01
Investigation of the possibilities of water-gas influence on the reservoir using pump-ejector units
- Authors:
- D. I. Popov
It is known that at present the use of waterflooding is considered as the most common method of reservoir pressure maintenance in Russia and, of course, all over the world. However, there are many physical and chemical barriers to achieving high oil recovery due to the interactivity of the water-rock system. This article presents the results of research of a new technology for realization of water-gas injection using pump-injector equipment.
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Date submitted2007-07-29
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Date accepted2007-09-21
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Date published2008-01-01
Fluid flow into the well in the conditions of zonally inhomogeneous formation
- Authors:
- D. A. Shakirov
The effect of changes in the filtration properties of the near-wellbore production zone (NWPZ) on the radius of the outer boundary of the formation (r k ) and well flow rate is considered. On the basis of analytical calculations, it is shown that the size of the drained zone of the reservoir decreases with deteriorating properties of the BHZ. Therefore, taking into account the change in r k , the fluid inflow decreases to a lesser extent than without taking into account the change in r k .
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Date submitted2007-07-15
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Date accepted2007-09-13
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Date published2008-01-01
Development of technology for construction of sidetracks with horizontal sections under the condition of preservation of the old wellbore and existing production from it. Justification of economic feasibility of drilling of sidetracks with horizontal sect
- Authors:
- S. V. Gavrilov
The practice of new oil and gas fields development often shows that the real oil-drainage boundary is larger than the assumed one. In this connection special zones are fixed on the territory of oil field, which usually are not included into the drainage zone. Such situation is considered on the example of an oil field in Western Siberia. To solve this problem, it was proposed to develop the area of the field not covered by wells by constructing two lateral branches with horizontal sections instead of four inclined wells. The technology of drilling the lateral branches and the technology of tailings cutting are discussed step by step. A review of the equipment used in drilling lateral branches and completing branch wells is given. The economic feasibility of the lateral branch construction project is considered.
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Date submitted2007-07-15
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Date accepted2007-09-03
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Date published2008-01-01
Filtering hydrocyclone for drilling mud cleaning with filter sounding by running transverse ultrasonic waves
- Authors:
- L. V. Vukadinovich
Shakers and hydrocyclones are the most common for sludge cleaning. The disadvantage of the shaker is low cleaning efficiency, i.e. it is impossible to separate small solid particles (sand, mud). The disadvantage of hydrocyclone is high losses of drilling mud - up to 5% per cleaning cycle. To reduce this disadvantage, this paper proposes a combined use of the effect of hydrocycloning and filtration of liquid inside the hydrocyclone with ultrasonic impact on the filtering element.
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Date submitted2007-07-30
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Date accepted2007-09-04
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Date published2008-01-01
Justification of steam-thermal horizontal well location in bitumen reservoir on the basis of complex generalization of geological-geophysical, field and laboratory data on the example of Mordovo-Karmalskoye field
- Authors:
- D. A. Dautov
The results of laboratory studies of optical properties of bitumen of Mordovo-Karmalskoye field, data on thermal conductivity of reservoirs, results of statistical processing of laboratory and actual data are analyzed. The influence of conditions of thermal influence and thermal conductivity of reservoirs on optical properties of produced bitumen has been investigated. Correlation interrelations of bitumen optical properties with temperature conditions of their development, thermophysical and heat capacity properties of reservoirs and bitumen typing by optical properties are revealed. Recommendations on elimination of thermal effect are given.
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Date submitted2007-07-13
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Date accepted2007-09-11
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Date published2008-01-01
Waterproofing compound for limiting water inflow into producing oil wells
A hydrophobic organic gel for water-release limitation technologies in oil wells has been developed. The dependence of gel efficiency and rheological properties of waterproofing on the gel base on the ratio of components and their concentration in hydrocarbon solvent has been studied. The influence of waterproofing on the wettability of silica sand and relative permeability of water in the reservoir model was investigated.
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Date submitted2007-07-05
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Date accepted2007-09-11
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Date published2008-01-01
Investigation of development system variants with ore and host rock collapse by computer modeling
- Authors:
- A. M. Gildeev
The paper considers various methods of ore extraction with collapse of ore and canopy rocks with the application of computer modeling using the AutoCAD software package. The regularities in the indicators of completeness and quality of ore excavation under the collapsed rocks are established.
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Date submitted2007-07-15
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Date accepted2007-09-24
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Date published2008-01-01
Research of properties of building materials modified by hydrophobic additives on the basis of peat
- Authors:
- E. Yu. Isaeva
The basic principles of production of peat-based waterproofing materials are considered. These substances are used to improve the properties of building materials. Application of hydrophobization method allows to reduce water absorption of building materials at least twice without deterioration of their strength characteristics.
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Date submitted2007-07-29
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Date accepted2007-09-25
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Date published2008-01-01
Possibilities of computer modeling of mining works
- Authors:
- S. Pessler
- K. Drebenshtedt
One of the key elements of increasing productivity and efficiency of excavators, as well as cost reduction is a high degree of automation and implementation of computer systems for data collection, analysis and planning of technological parameters of mining operations. The article reveals the possibilities of optimization of planning and production of mining operations with the use of computer modeling.
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Date submitted2007-07-11
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Date accepted2007-09-23
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Date published2008-01-01
Investigations of character of manifestation of mountain pressure in various mining-geological conditions
- Authors:
- A. V. Rogachkov
The article analyzes ways to reduce the impact of rock pressure by preemptive weakening of the roof rocks, as well as the application of technical solutions to select rational parameters of protective pillars, fixing and reinforcement of mine support.
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Date submitted2007-07-29
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Date accepted2007-09-10
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Date published2008-01-01
Technological solutions and substantiation of geomechanical parameters of open-underground method of coal deposits development
- Authors:
- V. V. Senkus
The paper publishes the design results of two variants of combined underground and surface coal mining, as well as the program and methodology of geomechanical support of combined coal mining.
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Date submitted2007-07-20
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Date accepted2007-09-10
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Date published2008-01-01
Experimental evaluation of the influence of pulse electromagnetic treatment of ferruginous quartzites for the purpose of their de-strengthening before grinding
- Authors:
- E. A. Fedotov
The purpose of the study is to develop scientifically based recommendations for weakening of ferruginous quartzite grains to reduce energy consumption for their disintegration, increase the efficiency of ore grains separation, concentrate yield and quality, as well as reduce iron losses in the tailings of the processing plant. The method of evaluation of the influence of pulse electromagnetic treatment of ferruginous quartzites on the efficiency of their percussive destruction is analyzed.
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Date submitted2007-07-11
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Date accepted2007-09-20
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Date published2008-01-01
Analytical method of determining the overburden exploitation factor by means of the graph of its minimum current volumes
- Authors:
- M. P. Bukasa
The work is devoted to the analytical method of solving the problem of stabilization of quarry productivity. The dependence of the average operating stripping ratio on the duration of the operational period of the open pit activity is established. Practical calculations are presented for one of the diamond kimberlite pipes of the Democratic Republic of Congo and were performed on the basis of AutoCAD 2006 and Microsoft Excel.
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Date submitted2007-07-27
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Date accepted2007-09-07
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Date published2008-01-01
Slope stabilisation method on S7 «Zakopianka» road case
- Authors:
- Michal Godzinski
- Paluch Lukasz
Modernization of the Zakopianka Road is probably the most expected investment in Southern Poland. Some problems occurred during the construction stage connected with protection of slopes from failure at the pre-planned highway location. This problem resulted from a relatively small amount of investment and lack of soil stabilization plans in the original construction design. Various slope reinforcing methods for the Myślenice – Pcim highway section are presented in the paper. The results of calculations with Finite Difference Method (FDM) and Limit Equilibrium Method (LEM) are presented as well.
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Date submitted2007-07-10
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Date accepted2007-09-07
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Date published2008-01-01
Determination of accuracy of a combined system of tachymeter and echo-sounder and suggestions of improvement
- Authors:
- Britta Lickfett
- Friedrich Partmann
The coastal measuring equipment is a combined system of tachymeter and an echo sounder. It is used for description of the surface of the seabed. The quality and possibilities of detection with this system can be determined through different tests.
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Date submitted2007-07-30
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Date accepted2007-09-12
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Date published2008-01-01
Management of underground issues in France using probabilistic methods
- Authors:
- Maxime Cauvin
As many other European countries, France has now to manage the “post-mining” phase, rather than mining activity as such. This paper focuses on presenting some post-mining issues and on discussing several improvements and benefits that probabilistic methods may bring to the management of problems related to a post-mining activity.
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Date submitted2007-07-28
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Date accepted2007-09-08
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Date published2008-01-01
Development and application of 3D-model of the territory for making optimal management decisions
- Authors:
- I. V. Ilinykh
The paper summarizes two years of experience in developing a three-dimensional model of Tyumen city. The methodology of three-dimensional modeling of large territories using modern information resources is considered.
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Date submitted2007-07-21
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Date accepted2007-09-02
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Date published2008-01-01
Estimation of stability of the cavern for gas storage taking into account salt rheology
- Authors:
- D. V. Shustov
The article deals with the stability of underground structures for gas storage in salt caverns, and also studies the influence of the convergence of the excavation walls on the surface using the method of mathematical modeling. Based on the results of calculations the feasibility study of geomechanical aspects of the project is carried out.
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Date submitted2007-07-20
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Date accepted2007-09-18
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Date published2008-01-01
Reduction of greenhouse gas emissions in the district heating system of Vyborg
Ratification of the Kyoto Protocol makes it possible to use the reduction of greenhouse gas emissions in Russia on a financial basis. This can contribute to a significant improvement of heat supply systems in cities. In the city of Vyborg it is rational to reconstruct transmission and distribution networks, install individual substations and improve the energy efficiency of buildings.
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Date submitted2007-07-07
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Date accepted2007-09-22
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Date published2008-01-01
The database of wastes and waste incineration optimization
- Authors:
- Fiedor Jiri
- Obroucka Karel
This paper deals with the determination of fundamental thermochemical properties of combined industrial waste and individual components of household waste. The values of these parameters significantly influence the course of the incineration process. The aim of the study is to create a basis for the possibility of energy menu development for incinerators and thus to widely popularize energy production from waste.
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Date submitted2007-07-04
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Date accepted2007-09-24
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Date published2008-01-01
Some topics on using ultrasonic method for concrete casting level measurement in bored pile foundation
- Authors:
- Lan Kai
- Yan Taining
- Shao Chun
With the rapid growth of China's economy, bored piles are widely used in infrastructure construction projects. But how to get the exact surface of the poured concrete is a difficult problem in quality control of bored piles. In practice, the only way to avoid quality problems is to pour a larger volume of concrete, which results in more waste and creates more burden on the environment due to the discarded concrete columns. Therefore, the development of an ultrasonic device to measure the concrete pouring level is highly relevant. Based on the analysis of the negative consequences of pouring too much concrete, the paper presents the design scheme of the device, summarizes the main difficulties and summarizes the results of our group.
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Date submitted2007-07-30
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Date accepted2007-09-26
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Date published2008-01-01
Development of the automated system of maintenance of pumping modes of oil pumping stations, providing energy resources saving, on the basis of wireless technologies
- Authors:
- V. A. Baturin
The article analyzes the control system of the Kovali-3 booster station. A number of shortcomings in the equipment, the system itself and the principle of operation are revealed. An automated pump control system based on frequency-controlled electric drive is proposed for modernization of the pumping station. The algorithm of the system operation is described, which is based on the principle of situational control. A brief analysis of the possibility of using wireless channels for data transmission within the pumping station and at higher hierarchical levels is given.
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Date submitted2007-07-18
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Date accepted2007-09-28
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Date published2008-01-01
Application of the system of recovery of light fractions of hydrocarbons at loading into railway tank cars
- Authors:
- O. V. Kozachok
Measures to reduce losses of oil and petroleum products during their transportation and storage are analyzed. The article considers the introduction of a method of sealing the loading of vehicles with the use of installation for the capture and recovery of light hydrocarbon fractions. The basic principles of its operation, technical characteristics and advantages are described.
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Date submitted2007-07-27
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Date accepted2007-09-29
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Date published2008-01-01
Hydrified tunneling complex for hard rocks
- Authors:
- M. V. Kucherenko
- A. A. Kucherenko
The article provides justification of the choice of mining tunneling equipment for construction of roadway in hard rocks with the use of hydraulic over loader with wedge conveying elements. High efficiency of the equipment in comparison with known analogs on the basis of modeling of its operation is shown.
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Date submitted2007-07-21
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Date accepted2007-09-01
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Date published2008-01-01
Energy saving compensated asynchronous motors and electric drives on their basis
- Authors:
- A. R. Mugalimova
The conventional induction motors have electrical efficiency η.=0.85÷0.94, cosφ=0.7÷0.85 and energy efficiency η en =η n cosφ n =0.6÷0.8. The proposed energy compensated induction motors are characterized by higher energy efficiency η n =0.85÷0.94, cosφ n =1.0, η en =η n cosφ n =0.85÷0.94.
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Date submitted2007-07-26
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Date accepted2007-09-07
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Date published2008-01-01
Investigation of dynamic loads of frame structures of peat machines
- Authors:
- A. N. Pavlov
The movement of peat machines is complicated by the presence of unevenness in the form of bumps and stumps, high moisture content of the deposit in some areas and, finally, deformability of the peat deposit. All this significantly worsens the passability of peat machines in comparison with machines moving on flat hard ground. The purpose of the tests is to select the most rational frame variant in terms of its durability, minimum weight and manufacturability of construction.
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Date submitted2007-07-04
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Date accepted2007-09-03
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Date published2008-01-01
Hydromechanical power plant of a quarry drilling machine
- Authors:
- S. A. Semov
A schematic diagram of the mechanisms of a hydraulically driven drilling machine developed at the Moscow State Mining Institute is presented, which provides the necessary parameters of power and bit speed, minimum size and weight, high starting torque and efficiency, effective protection against overloads, possibility of automated control, convenience in maintenance and repair, as well as safe and comfortable working condition.
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Date submitted2007-07-02
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Date accepted2007-09-24
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Date published2008-01-01
Development of the traction electric drive of the trolley transportation for the open-cast mining works
- Authors:
- V. A. Cherepanov
The Institute of Mining Practice of the Ural Branch of the Russian Academy of Sciences together with the Ural State Mining Institute is developing and trying to introduce a new type of wagon-trolley at mining enterprises in Russia and CIS countries. This paper considers the basic requirements and the most acceptable, in our opinion, designs of the traction electric drive of the wagon, which can be briefly described as follows: supply network - frequency converter (consisting of completely uncontrolled IGBT or IGCT modules implemented by Direct Torque and Flux Control algorithm) - commutatorless traction motor.
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Date submitted2007-07-29
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Date accepted2007-09-21
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Date published2008-01-01
Thermomechanical rolling of wire rod with superior properties
- Authors:
- Sebastian Waengler
- Rudolf Kawalla
Long products are one of the most important products of the global metallurgy industry. Rising prices for energy and raw materials, as well as strict legislative regulation make it necessary to improve mechanical properties and reduce energy consumption during production. Thermomechanical rolling is a promising approach to meet consumer requirements for improving mechanical properties and reducing energy consumption.
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Date submitted2007-07-17
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Date accepted2007-09-30
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Date published2008-01-01
Recovery of manganese from mixed metal solutions by solvent extraction with organophosphorus acid extractants
- Authors:
- Pakarinen Jouni T.
- Paatero Erkki Y.O.
Di(2-ethylhexyl) phosphoric acid (D2EHPA) and bis(2,4,4-trimethylpentyl) phosphinic acid (Cyanex272 manufactured by Cytec, USA) were used to extract manganese from sulfuric acid solutions containing Co, Mg, Ca and Na. Cyanex272 was found to have slightly higher selectivity towards manganese than D2EHPA. In addition, it was found that an increase in temperature had a negative effect on the selectivity for Mn.
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Date submitted2007-07-26
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Date accepted2007-09-28
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Date published2008-01-01
Determination of hafnium in zirconium compounds using flame atomic absorption spectrometry (FAAS)
- Authors:
- Agata Jakóbik – Kolon
- Marek Smolik
- Ewa Miodek
The optimum conditions for determination of hafnium in zirconium matrix by FAAS were established (1% HF, 0,1% Al, max. 1% ZrOCl2). The effect of various inorganic acids (HF, HCl, HClO4, HNO3, H2SO4), as well as influence of comparable amounts of Fe, Ca and Mg on the Hf signal was also studied. ICP-AES was used as comparative method.
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Date submitted2007-07-20
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Date accepted2007-09-21
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Date published2008-01-01
Technology of fabrication in relation to microstructure of Ni-Ti shape memory alloys
- Authors:
- I. Szurman
- M. Kursa
This article deals with the production of shape memory Ni-Ti alloys in a plasma furnace and a vacuum induction furnace. Flattening and drawing were then carried out to produce wires that will be used to measure transformation temperatures.
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Date submitted2007-07-23
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Date accepted2007-09-19
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Date published2008-01-01
Development of flotation technology of metallurgical sludge processing
- Authors:
- O. G. Efremova
Many metallurgical enterprises in Russia are experiencing difficulties with raw material supply. One of the ways to solve this problem is the use of secondary resources, in particular, metallurgical tailings. Since these tailings are characterized by high zinc content, which negatively affects the operation of blast furnaces, the study is devoted to the development of technology for zinc removal from tailings.
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Date submitted2007-07-24
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Date accepted2007-09-02
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Date published2008-01-01
Development of device structure for detection of metal objects in ore
- Authors:
- A. M. Kurchukov
The purpose of this work is to improve the reliability of devices for the detection of metal impurities in the production line of technological raw materials using eddy current self-sustained sensors. An effective way to increase their reliability is to increase the ratio between useful signal and background noise in the conversion signal channel of the device. This ratio can be increased by developing an optimal device structure. The device structure is designed using the method of optimal matched filtering of signals from background noise.
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Date submitted2007-07-18
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Date accepted2007-09-13
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Date published2008-01-01
Research of dependence of viscosity of electrolyte viscosity of electrolyte of copper refining production on its composition and temperature
- Authors:
- I. S. Kuzmina
The values of dynamic viscosity of copper-nickel sulfate solution with boundary parameters Cu 2+ -50-60 g/dm 3 , Ni 2+ -20-25 g/dm 3 , H 2 SO 4 -140-180 g/dm 3 in the temperature range of 50-70° have been determined. A simplified equation for analyzing the viscosity of the solution depending on its composition and temperature is proposed. Technological graphs of solution viscosity simplifying its determination are given.
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Date submitted2007-07-20
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Date accepted2007-09-29
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Date published2008-01-01
Development of technology of tungsten wire production for light sources with the use of blue tungsten oxide as an intermediate product
- Authors:
- S. I. Lyakh
The paper reveals the types of technological modes of obtaining blue tungsten oxide - an intermediate compound in the production of tungsten powder used in the manufacture of tungsten wire for the electrical industry. The technology of blue tungsten oxide production developed on the basis of these studies was industrially tested and implemented at the Novosibirsk Electro-Vacuum Plant.
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Date submitted2007-07-14
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Date accepted2007-09-16
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Date published2008-01-01
Extraction of noble metals from slags of metallurgical production
- Authors:
- K. E. Ananenko
The article presents the results of laboratory tests on enrichment of metallurgical slags. Stage-by-stage enrichment schemes have been developed using high-tension separators, stripping and flotation machines, sluices, concentration tables, Itomack centrifugal separator. As a result, two enrichment schemes were proposed - dry and wet.
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Date submitted2007-07-10
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Date accepted2007-09-20
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Date published2008-01-01
Application of risk assessment concept in Estonian mining industry
The paper deals with the problems of risk assessment in Estonian oil shale mines, where room-and-pillar mining with blasting is applied. This paper examines the risks associated with the application of a new room-and-pillar mining technology using modern machines at the Estonia mine. The new mining technology is based on the transition from packet blasting to emulsion blasting, from 2.0 m boreholes to 4.0 m boreholes (ATLAS Copco machine) and on a new undercutting method (SMAG machine). With this equipment with the new technique, the advancement speed at the entrance reached 4 m. As a result of this increase in advancement speed, situations with unsupported room lengths of up to 5.5 m can be expected with a decrease in the stability of the immediate roof. Various factors relevant for Estonian oil shale mines have been identified. The study showed that the probability and consequences of the risk are acceptable. The used concept of the risk assessment method is applicable to Estonian oil shale mines. It can be used for different purposes and levels. The results of the risk assessment are of particular interest for practical purposes.
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Date submitted2007-07-06
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Date accepted2007-09-23
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Date published2008-01-01
Large scale investments in Russia’s infrastructure and natural resources sector
- Authors:
- Thomas Schumann
Russia has a significant need for large-scale investment in infrastructure and natural resource extraction. It is generally accepted that these needs can only be met through foreign direct investment (FDI). Without an inflow of capital and know-how, Russia will miss chances to grow its entire economy and lose export revenues. This article pays special attention to the conditions for attracting large-scale FDI, which today is increasingly realized through the creation of project finance structures.
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Date submitted2007-07-29
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Date accepted2007-09-26
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Date published2008-01-01
Economic added value as a tool of company management
- Authors:
- S. G. Galevskii
The article deals with the financial indicator of economic value added (EVA) and its derived indices. The procedures for calculating EVA and interpreting its various values are given. In addition, the areas of its application, such as company management, business value assessment and personnel motivation, are considered. The application of the index is demonstrated on the example of the West Siberian Metallurgical Plant.
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Date submitted2007-07-09
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Date accepted2007-09-29
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Date published2008-01-01
Economic evaluation of labor potential use efficiency in coal-mining region
- Authors:
- I. A. Getmanova
The article considers socio-economic problems arising from the restructuring of the coal mining industry. The methods of determining the cost estimates of labor potential of the coal mining region on the basis of calculating the professional index of a person are given. The algorithm for calculating the efficiency of labor potential use, as well as the calculation of cumulative environmental and economic effect due to the increase in labor potential as a result of employment of people previously not employed in coal-mining regions is proposed.
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Date submitted2007-07-18
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Date accepted2007-09-06
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Date published2008-01-01
Formation of the program on oil production intensification
- Authors:
- A. E. Novoselova
The paragraph describes the main trends in the development of oil and gas production in Russia. Theoretical and methodological provisions for the development of oil production intensification program as a factor of rational use of production capabilities of the oil sector are proposed.
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Date submitted2007-07-01
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Date accepted2007-09-03
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Date published2008-01-01
Economic results of variants of development and oil production in the North-West region of Russia
- Authors:
- A. E. Cherepovitsyn
- L. S. Sinkov
Oil production levels under various options are forecasted, taking into account the current state of geological exploration and based on data from research institutes and the oil company. Economic indicators of reserves development and oil production are determined. The comparative economic characteristics of alternative variants of oil production forecast by such indicators as investment, net present value, state capitalized value, profitability index are calculated. The economic feasibility of oil reserves development according to fixed forecasts of oil reproduction and production and taking into account the modern structure of taxation has been determined.
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Date submitted2007-07-09
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Date accepted2007-09-27
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Date published2008-01-01
Economic estimation of priority direction of natural gas resources development in the North-West region of Russia
- Authors:
- A. E. Cherepovitsyn
The priority area for development of the gas industry in the North-Western region is the first commercial production of gas from the Shtokman gas condensate field with export to North America and Western Europe. Gas production levels have been determined, taking into account alternative exports via LNG and pipeline systems. Economic results are calculated under conditions where the market price of natural gas is $240 per 1,000 cubic meters. Such economic indicators as investment, net present value, capitalized value, profitability index are calculated. First of all, economic efficiency determines the feasibility of LNG utilization.
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Date submitted2007-07-12
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Date accepted2007-09-04
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Date published2008-01-01
Stimulation of investment attractiveness of environmental impact by methods of tax regulation
- Authors:
- T. A. Shelyakina
Payments for environmental pollution are proposed to be increased to optimal market levels that attract investment in environmental facilities, with a simultaneous reduction in income tax.
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Date submitted2007-07-03
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Date accepted2007-09-01
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Date published2008-01-01
Assessment of financial stability of OOO Peterburgteploenergo
- Authors:
- I. I. Kashtanova
The paper considers the main problems of one of the branches of the fuel and energy complex - heat supply. The analysis of the company's activity, its participation in fuel and energy projects of the city of St. Petersburg is given. Technological, organizational and managerial solutions aimed at improving the efficiency and reliability of OOO Peterburgteploenergo functioning are scientifically substantiated, the factors of financial stability are determined.
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Date submitted2007-07-07
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Date accepted2007-09-22
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Date published2008-01-01
Role and value of business reputation in the assets of the company
- Authors:
- A. A. Sarafanova
- E. V. Khit
The article analyzes the correlation of the term "goodwill" used in Russian accounting with its analogues used abroad. The concepts of the purposes and reasons for assessing business reputation of a modern company are defined.
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Date submitted2007-07-26
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Date accepted2007-09-15
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Date published2008-01-01
To the estimation of economic efficiency of innovations at mining enterprises on the basis of the developed mathematical model
- Authors:
- E. A. Nikolaenkova
- V. A. Fedoseev
The article considers the problems associated with the quantitative and qualitative assessment of economic efficiency of innovations in the mining industry. The essence of the concept of "novelty" is disclosed in detail on the example of an operating ore-dressing machine. The change of key parameters of technological process, not directly related to "novelty", leads to the need to build a three-factor (two-factor) mathematical model.
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Date submitted2007-07-18
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Date accepted2007-09-08
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Date published2008-01-01
Biodegradation of PAHs, PCBs and PHC in sediments from the manmade water course of Černý příkop in the municipal territory of the Ostrava city (Czech republic)
The paper deals with biodegradation of polycyclic aromatic hydrocarbons, polychlorinated biphenyls and petroleum hydrocarbons in sediment samples from Černí Pršíkop. Bottom sediments from Černí Pršíkop represent a significant environmental load on the territory of the city of Ostrava, they are contaminated with a wide range of organic substances. Standard pure bacterial cultures of Pseudomonas putidaa Rhodococcus sp. were used for biodegradation. The data obtained should be in accordance with the data specified in Act N°294/2005 Coll. on the conditions for land filling and surface utilization of waste.
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Date submitted2007-07-11
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Date accepted2007-09-25
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Date published2008-01-01
Experimental researches for the reduction of the noxes during the burning of pit coal from Jiu Valley – Romania
- Authors:
- Ciolea Daniela Ionela
The paper summarizes the results of measurements made on a pilot liquefied bed combustion plant used in a pilot activity while operating on mine coal in the Ju Valley. Flue gas desulphurization and overall flue gas cleaning has become a major concern for many users of combustion plants with pollutant emissions in the last quarter of the century.
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Date submitted2007-07-30
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Date accepted2007-09-09
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Date published2008-01-01
Microbial surfactants and rhodococcus – facts and possibilities
- Authors:
- Susanne Niescher
The paper describes possible applications of surfactants of microbial origin (Rhodococcusbiosurfactants) for hydrocarbon neutralization.
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Date submitted2007-07-26
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Date accepted2007-09-30
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Date published2008-01-01
Analysis of oil sludge using amperometric ion-selective electrodes
- Authors:
- K. O. Kurnakov
- M. V. Kryuchkov
The article proposes a new methodology for analyzing the composition of oil drilling fluids and describes the basic principles of this methodology.
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Date submitted2007-07-09
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Date accepted2007-09-02
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Date published2008-01-01
Integrated monitoring of the impact of Severonickel Combine on the natural environment
- Authors:
- M. V. Parshina
- D. S. Korelskii
The study presented in this article was conducted in the area of Monchegorsk and was aimed at determining the mechanisms and assessing the degree of environmental disturbance and pollution in the process of production activities of the Severonickel Plant. The results of the study of the degree of transformation and the probability of migration of polluting components from waste at the open solid waste storage site due to hypergenic processes are presented. The high acid potential of solid waste is proved, which at relatively small volumes of infiltration water causes significant damage to surface waters due to the global problem. Damaged waters are the only source of drinking water supply in the area of Monchegorsk. The paper also proposes a system of monitoring and assessment of the state of soil and vegetation cover in forest ecosystems impacted by the Severonickel Plant.
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Date submitted2007-07-27
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Date accepted2007-09-11
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Date published2008-01-01
Analysis of ecological situation in the zone of influence of the large cement plant and technical solution for its improvement
- Authors:
- N. N. Safarova
- Yu. P. Sorokin
This article analyzes the environmental situation in the zone of influence of the cement plant and proposes a technical solution to improve it. Development of marl deposit by open-cut method has an unfavorable impact on flora and fauna. The forests located at the plant perform special nature protection, sanitary-hygienic, anti-erosion and soil protection functions, but the main function is the ability to clean the atmospheric air from dust, gases and other pollutants The main problem of reclamation of disturbed lands is of special importance. Recultivation of quarry territories is complicated by the presence of complex relief, lack of vegetative soil and fresh water, poor protection and other resources. Restoration of vegetation on steep slopes, high multi-stage quarries is particularly difficult.
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Date submitted2007-07-17
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Date accepted2007-09-18
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Date published2008-01-01
Use of long-lived solidifying foams for protection of working spaces from dust and gas explosions
- Authors:
- Yu. D. Smirnov
Mining is closely connected with human impact on the environment in order to provide it with primary resources. In the SPMI laboratory under the guidance of Prof. Yu.V. Shuvalov, a number of measures have been taken to protect the environment from the harmful effects of technological processes in open pit and underground coal mining, which is currently the most demanded energy resource. In the future, coal will be one of the main resources, as its supply can meet the needs of all industries for a long period of time. The research was supported by the Government of St. Petersburg, CRDF USA, the Ministry of Education and Science of the Russian Federation and REC-015 at SPMI, Russia.
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Date submitted2007-07-02
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Date accepted2007-09-27
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Date published2008-01-01
Assessment and reduction of technogenic load in the zone of influence of oilfields of OOO RN-YUGANSKNEFTEGAZ
- Authors:
- M. V. Kozhevnikova
Purpose of the study: assessment of technogenic changes of natural environment components in the impact zone of oil production vessels. Research objectives: revealing technogenic transformations of the natural environment in the zone of direct technogenic impact (DTE) and beyond its boundaries; assessment of technogenic variability of geosystems; development environmental protection measures to reduce technogenic-iconic loads. Research results: for the first time the state of natural environment components in the impact zone of oil production vessels was assessed; modeling of emergency oil flooding was carried out.
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Date submitted2007-07-21
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Date accepted2007-09-20
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Date published2008-01-01
Mechanism of pollution of soil and vegetation cover in the zone of influence of enterprises of aluminum industry
- Authors:
- M. A. Kulikova
The impact of metallurgy enterprises on the soil and vegetation cover increases every year. As a result, soil fertility decreases, heavy metals pollute the soil cover, etc. The main source of heavy metals getting into the soil cover is emissions. Heavy metals get into the soil with atmospheric precipitation and accumulate in it. The purpose of our research is to introduce soil and vegetation monitoring in the zone of influence of the Sevuralboksitruda enterprise, while the environmental department of the enterprise does not carry out real control.
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Date submitted2007-07-06
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Date accepted2007-09-20
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Date published2008-01-01
Monitoring and development of methods of oil sludge pits reclamation
- Authors:
- M. M. Malyshkin
- M. A. Pashkevich
One of the biggest environmental problems of the Russian oil industry is drilling waste pollution, which has a negative impact on the living conditions of people, animals and plants. Drilling sumps are pits on the territory of drilling sites filled with drilling waste. The problem of drilling pits reclamation can be solved by using local tree crops and skillful application of drilling wastes as a growth-stimulating substance along with reclamation of drilling pits. This makes it possible to develop a fundamentally new scientific and methodological basis for reclamation of forests on disturbed lands.