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S. A. Ivanov
S. A. Ivanov
Siberian Geophysical Research-and-Development Company LLC
Siberian Geophysical Research-and-Development Company LLC

Articles

Geology
  • Date submitted
    2014-12-19
  • Date accepted
    2015-02-27
  • Date published
    2015-06-01

Geological and mathematical model of secondary sulphidisation zone polarizability as a function of oil and gas deposit depth

Article preview

The differential-normalized method of electrical exploration (DNME), by means of polarization study of the secondary sulphidation zone (depth ~ 0,4-0,6 km), allows making conclusion about existence and parameters of an oil and gas deposit (depth up to ~ 2-5 km). The approximate solution of the system of nonlinear differential equations in partial derivatives for concentration of sulfur-hydrogen and pyrite (polarizability) as the function of oil-gas deposit depth has been received. The results are confirmed by experimental investigations in the North Sea.

How to cite: Putikov O.F., Ivanov S.A. Geological and mathematical model of secondary sulphidisation zone polarizability as a function of oil and gas deposit depth // Journal of Mining Institute. 2015. Vol. 216. p. 31.
Application of the modern geophysical technologies for prospecting and exploration of mineral deposits
  • Date submitted
    2010-12-14
  • Date accepted
    2011-02-11
  • Date published
    2011-06-01

Multidimentional analysis and data visualisation of differentially normalized electrical method on the Barents sea shelf

Article preview

Intensive offshore exploration is being conducted at the present time. Due to areal alterations over the hydrocarbon deposits high pyrite concentration is accumulated. This effect results in induced polarization anomalies which can be discovered with differentially normalized electrical method. The survey is being carried out in the process of a vessel movement by six channels. dU(t) fields are obtained per one current pulse. These data are highly-correlated. Transformation of these data into orthogonal high dimension space as well as robust multivariate regression procedure application allow to distinguish the geological heterogeneities response. This investigation is developing  the anomalies recognition technique.

How to cite: Graiver A.V., Davydenko A.Y., Davydenko Y.A., Ivanov S.A. Multidimentional analysis and data visualisation of differentially normalized electrical method on the Barents sea shelf // Journal of Mining Institute. 2011. Vol. 194. p. 173.
Problems of shelf development: geology and ocean engineering
  • Date submitted
    2007-09-03
  • Date accepted
    2007-11-19
  • Date published
    2008-03-01

Risk assessment during towing of marine objects

Article preview

In the procedure of the risk appraisal for a project of offshore towing of the large-size object, an algorithm of the «risk-management» is proposed to estimate the whole scope of assuming hazardous events. The initial – qualitative phase of analysis determines a possible range of risk factors, provides their description and classification. The second – quantitative phase evaluates their probability and subsequent cost values. The third stage of the risk values analysis – phase of the control – provides the cyclic recurrence of the risk-management. In sum, estimation of probable kinds of risks, while the towing, leads to ensured choice of compensating measures and, as a result, provides the needed level of security during the towing of, for instance, the jack-up rig platform.

How to cite: Ivanov A.B., Ivanov S.A. Risk assessment during towing of marine objects // Journal of Mining Institute. 2008. Vol. 176. p. 105-107.