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Date submitted1980-09-27
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Date accepted1980-11-02
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Date published1981-07-09
Conditions of perennially frozen rocks not thawing during casing cementing with warming up
- Authors:
- A. M. Yakovlev
- A. N. Salamatin
The reliability of cementing of the annular space in rocks with negative temperatures is determined by the strength of adhesion of the cement stone with the rock ...
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Date submitted1980-09-23
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Date accepted1980-11-07
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Date published1981-07-09
Prediction of mechanical speed of diamond drilling with different cleaning agents
- Authors:
- L. K. Gorshkov
- A. M. Yakovlev
Prediction of the mechanical drilling speed as one of the potential capabilities of diamond rock-destroying tools, conditioned by the design features of the tool, characteristics of the cleaning agent, drillable rocks and drilling technology, is the basis for the application of methods of optimization of diamond drilling processes ...
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Date submitted1980-09-30
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Date accepted1980-11-29
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Date published1981-07-09
Investigation of deep wellbore stability in an ice massif
- Authors:
- V. M. Pashkevich
- V. K. Chistyakov
One of the problems of deep drilling is to maintain the stability of the rocks composing the walls of the borehole, both directly in the process of penetration, and during subsequent studies and works ...
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Date submitted1980-09-23
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Date accepted1980-11-03
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Date published1981-07-09
About regularities of energy transfer to rock during percussive drilling
- Authors:
- I. G. Shelkovnikov
In percussive drilling, energy is transferred to the rock as a result of penetration of the wedge-shaped rock-destroying tool in free fall or under the action of a stress pulse ...
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Date submitted1980-09-24
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Date accepted1980-11-19
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Date published1981-07-09
Development of the control system of the underwater rotary column sampler
- Authors:
- A. V. Lukoshkov
- I. G. Shelkovnikov
The study of experience accumulated by specialists of offshore drilling of foreign countries has shown high efficiency of underwater rotary action samplers. Meanwhile, in the USSR there are no such designs, which significantly hinders the progress of domestic research of the ocean floor ...
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Date submitted1980-09-19
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Date accepted1980-11-24
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Date published1981-07-09
Estimation of heat exchange in a borehole at quasi-stationary mode
- Authors:
- V. A. Romanov
- Yu. M. Pariysky
Economic indicators of geothermal system significantly depend on the wellhead potential of coolant brought to the surface by wells. In this regard, during the exploration and operation of geothermal systems, the assessment of heat losses in production wells is of particular relevance ...
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Date submitted1980-09-22
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Date accepted1980-11-02
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Date published1981-07-09
Hydraulic power as a technological parameter of diamond drilling
- Authors:
- L. K. Gorshkov
It is known that the mode of cleaning the rock-drilling tool from cuttings largely determines the efficiency of the diamond drilling process. However, until now there are practically no objective criteria for determining the optimal flow rate of cleaning agent, providing both the required degree of cleaning of diamond tools from cuttings and proper cooling during the process of rock destruction during drilling ...
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Date submitted1980-09-23
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Date accepted1980-11-29
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Date published1981-07-09
Physical model of a thermodrill projectile
- Authors:
- A. M. Shkurko
The efficiency of well sinking in glacial deposits by thermo-drilling shells is largely determined by the selection and maintenance of rational modes of operation of the crown-heater and the system of melt water removal from the bottom hole during drilling ...
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Date submitted1980-09-17
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Date accepted1980-11-17
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Date published1981-07-09
Selection of the method of investigation of the contact zone at the cement-rock interface
- Authors:
- L. A. Tereshchenko
One of the reserves for increasing the productivity of drilling operations is to improve the reliability of fixing unstable well walls. It is known that the results of fixing of complicated zones are very unstable ...
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Date submitted1980-09-16
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Date accepted1980-11-27
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Date published1981-07-09
Предварительные исследования пневмоударного бурения с использованием газожидкостных смесей в качестве очистного агента
- Authors:
- V. Ya. Klimov
The most productive method of drilling with air blowing is drilling with the use of submersible pneumatic drills. Application of this progressive drilling method is limited by complications caused by formation water inflows into the well, which cause formation of slurry glands and plugs ...
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Date submitted1980-09-29
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Date accepted1980-11-23
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Date published1981-07-09
Application of hydrophobic emulsion for drilling through mudstones of the Exploration Formation of the Norilsk Region
- Authors:
- A. N. Kholodok
- V. Ya. Klimov
Well sinking in mudstones of the Exploration Formation is usually accompanied by collapse of well walls. This leads to high time consumption for wellbore development and re-drilling of collapsed intervals ...
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Date submitted1980-09-08
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Date accepted1980-11-05
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Date published1981-07-09
Purification of flushing fluid from drilled rock
- Authors:
- A. N. Kholodok
The introduction of the KSSK complex in the Norilsk Integrated Exploration Expedition required the use of non-structural flushing fluids with low solid phase content, since small gaps between the core barrel and drill pipe, as well as between the borehole walls and drill pipes, increase the pressure in the injection line ...
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Date submitted1980-09-11
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Date accepted1980-11-16
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Date published1981-07-09
Selection of new constructive schemes of autonomous PCVPs
- Authors:
- A. V. Lukoshkov
When conducting mapping and research geological works in the ocean, the greatest interest for scientists are its deep-water areas, the study of the composition of the bottom of which is currently difficult due to the lack of simple and effective means of selecting dialog columns of the surface layer (first meters) of bottom soils ...
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Date submitted1980-09-03
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Date accepted1980-11-05
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Date published1981-07-09
Development of wear resistance scale for machined and tool materials
- Authors:
- G. A. Senkin
The existing methods and devices for determining the wearability of various materials when rubbing against fixed and unfastened abrasive particles do not take into account the loss of cutting ability of abrasive grains, changes in the sliding speed during the experience and other factors affecting the accuracy and stability of the results obtained ...
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Date submitted1980-09-10
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Date accepted1980-11-04
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Date published1981-07-09
Drilling of wells in conditions of change of aggregate state of passed rocks
- Authors:
- V. K. Chistyakov
One of the promising directions of further improvement of drilling operations in complex mining and geological conditions is the research and development of the method of drilling wells with changing the aggregate state of the passed rocks ...
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Date submitted1980-09-09
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Date accepted1980-11-04
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Date published1981-07-09
Wellbore stability when drilling in ice deposits
- Authors:
- V. M. Pashkevich
The problem of wellbore stability occupies an important place in solving the problem of improving the efficiency of drilling in difficult geological conditions, determined mainly by the strength and rheological characteristics of rocks, the degree of their tension, temperature regime, etc. ...
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Date submitted1980-09-17
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Date accepted1980-11-10
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Date published1981-07-09
Experience of drilling-melting wells filled with non-freezing liquid in Antarctic and Arctic conditions
At the Leningrad Mining Institute, work is underway to create techniques and technology for deep drilling-melting wells in ice deposits. At the inland Antarctic Vostok station and on scientific cruises more than 4000 m of boreholes with complete coring were drilled ...
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Date submitted1980-09-25
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Date accepted1980-11-06
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Date published1981-07-09
Experience in determining the stability of clayey rocks in the borehole walls
- Authors:
- I. L. Eberling
- V. Ya. Klimov
The study of mineralogical composition and physical and mechanical properties of rocks is an important stage in the process of development and selection of flushing fluids for drilling exploration wells ....
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Date submitted1980-09-15
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Date accepted1980-11-29
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Date published1981-07-09
On the dependence of the petrostructure of the ice sheet on the paleotemperature in the area of Vostok Station
- Authors:
- V. G. Portnov
Reconstruction of paleoclimatic conditions of glacier formation is currently based on the results of isotopic studies of ice, the study of the temperature field of the glacier cover, spore pollen analysis and patterns of change in the content of mineral microparticles by depth ...
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Date submitted1980-09-29
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Date accepted1980-11-08
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Date published1981-07-09
On the influence of mineral composition of mudstones of the Razvedochninskaya Formation of the Talibskoye field on well wall stability
- Authors:
- D. I. Beresneva
- Yu. M. Chaschinov
Borehole penetration of mudstones of the Exploration Formation of the Talnakhskoye field is often complicated by collapse of borehole walls. The strong tectonic disturbance of the area and high rock pressure due to the great depth (2000 m) of the formation do not fully explain this phenomenon, since both emergency and accident-free wells have been recorded in equal conditions ...
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Date submitted1980-09-09
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Date accepted1980-11-11
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Date published1981-07-09
Statistical modeling of drilling processes using the method of Boolean models
- Authors:
- A. N. Selivanov
Reliability and efficiency of experimental research in the creation of drilling equipment development of drilling technology are largely determined by the adequacy and stability of the resulting models ...
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Date submitted1980-09-20
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Date accepted1980-11-02
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Date published1981-07-09
Analysis of heat exchange processes during ice drilling-melting by steam condenser
- Authors:
- B. B. Kudryashov
- G. N. Soloviev
Development of a high-performance thermodrill for high-speed sinking of "dry" wells with coring in snow and firn and ice deposits, based on the use of water vapor as an intermediate coolant on the principle of "open" steam tube, causes the necessity to find an analytical expression of the complex heat exchange between condensing steam and the ice face taking into account the shielding effect of the condensate film with thickness e inside the hollow annular condenser and the layer of melt water with thickness S, continuously formed under its working face during the drilling-melting process...