Issues of the journals for 2007 y.

Evaluation of efficiency of use of dependency of type “core - core” at study of inhomogeneous layers for GIS data

(Rezvanov R.A. )

Petrophysical dependenciesfound by way of correlation ofreservoir characteristics (porosity, irreducible water saturation, permeability etc.) measured on the same core samples (“core-to-core” dependence) are widely used in well log interpretation. Computation of double-layer beds’ average parameters shows that correlations between them can differ enough from “core-to-core ” dependencies. Thus using the latterfor definition of one average characteristic by means of average value of another characteristic can result in serious mistakes. Some variants of mistakes elimination are presented in the article.......

  • 2007  № 5, pp. 45-49

Accounting for Noise Fractal Characteristics while Solving Inverse Geophysical Problems: Gravity and Magnetics

(Blokh Y.I. )

Accumulated experimental data shows that high-frequency geological noises, which complicate gravitational and magnetic anomalies, have fractional nature. To consider this fact while data interpretation, “bulky ” techniques have been proposed so far. In this article it is shown that parameterization of the covariance function of interferences as fractional Gaussian noise, gives the possibility to simplify the interpretation parameters estimates and make them much more effective.......

  • 2007  № 5, pp. 50-54

The Principles of Building and Uising 3D Stochastic Geological Models while Geological Forecasting

(Kalinin D.F. Kalinina T.B. Bezukladnov V.A. )

New 3-D stochastic geological models construction technique is introduced. These volumetric models could used to definie geophysical criteria while ore deposits forecasting at different mapping scales. The method ofgravitational and magnetic field models construction using stochastic approach for ore-bearing areas, nodes, fields, and deposits is considered. Synthetic fields population is usedfor ores forecasting by stochastic fluctuations of rock parameters. An example of stochastic geological model construction for plutohenic hydrothermal ore deposit is given. Synthetic gravitational and magnetic fields were used as standards for hydrothermal ore-bearing layers forecasting. Probabilistic maps of ore potentials were obtained by statistical integration of gravitational and magnetic fields.......

  • 2007  № 5, pp. 55-61

Oil and Gas Generating Potentials of the Ciscaucasia Paleozoic Deposits

(Boldireva V.A. Chernov A.A. Trofimenko Ye.A. )

The features of character of a gravitational field above some HC traps testify, on the one hand - to an opportunity and necessity of use of the precision gravity data at the oil and gas prediction, with another hand - about necessity of development and introduction of more perfect methods of interpretation, which would allow alongside with revealing local decompaction in a geological section to establish criteria offorecasting of probable efficiency of productivity of it finding of its deep and spatial parameters. The complexity of gravitational prospecting application by of HC traps revealing is caused by that the effect from a HC trap is small, that till now limited application of gravitational prospecting at the oil and gas bearing prognosis. Mapping of local of decompaction in a geological section in Baidganov and East deposits on the basis of the analysis given precision gravity within the limits of deposits is carried out. Baidganov and East deposits are concerning to number of system of Prikumskiy raisings. The analysis of the gravity data was carried out by the developed earlier technique successfully enough used in a number of oil and gas bearing areas.......

  • 2007  № 5, pp. 62-67

Numerical Studies of Geothermal Steam Zones Dynamics. Muntovsky Volcano Case History, Southern Kamchatka

(Pashkevich R.I. Taskin V.V. )

The numerical heat and mass transfer model in volcano edifice and rocks above the magmatic chamber is worked out. It is showed thatforming and developing of steam zones above the chamber is determined by configuration of the chamber, initial isotherms and density of calculation grid nearby magma chambers boundary. In the case of isometric elliptical chamberform and dense grid the floating of steam zones is absent.......

  • 2007  № 5, pp. 68-71