METHODOLOGICAL ASPECTS OF AZIMUTHAL AVA INVERSION: A WEST SIBERIAN CASE STUDY

(Shalaeva N.V. Kerusov I.N. Grinevskiy A.S. Miroshnichenko D.E. )

This paper considers azimuthal AVA inversion of seismic data: at first, 2D model and then real 3D data. A special regularization procedure based on Rüger equation is proposed and studied. As a result of the inversion, we obtain volumes of elastic properties and relative anisotropy parameters. Their interpretation is based on microseismic monitoring of hydraulic fracturing.......

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  • 2019  № 4, pp. 22-29

MODEL-BASED AMPLITUDE PHASE CORRECTION

(Garkin A.S. )

In the article, way of wavelet form compensation for poststack seismic data is shown. 1D modeling was carried out and correction with different optimization methods was done.......

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  • 2019  № 4, pp. 30-36

PULSED-NEUTRON LOGGING - PERSPECTIVE METHOD OF THE NEW COMPLEXES OF THE GEOPHYSICAL WELL RESEARCHES ON COAL DEPOSITS

(Popov V.V. Fomenko N.E. Kovalenko A.S. )

In the article is considered of pulsed neutron logging usage (INK) into the composition of the geophysical well logging complex on coal deposits. This will be lead to increasing of the precision and reliability of the task solution definition of coal composition, estimation of their quality indicator, and for enclosing rocks - estimation of physical mechanical and filtration capacitive properties on molecular atomic level. INK allows also to solve the tasks of gas-bearing, forecast the mining and geological conditions and ecological consequences.......

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  • 2019  № 4, pp. 37-41

RIFT STRUCTURES AND OIL-GAS BEARING IN THE GRAVITY RHEOLOGICAL MODELS OF THE CRUST

(Petrishchevsky A.M. )

The stable connection between drops of density contrast in the lower crust and subcrustal mantle with the high heat flow anomalies is established in the West Siberia. North East China and Australia. It supposes a heightened penetrability of the crust for mantle heat- and fluid inflows toward the upper crust layers, that provides conditions for transformation of organic material into the Paleozoic and Mesozoic sedimentary and weekly metamorphic layers in the hydrocarbon deposities. The oil and gas deposits are arranged to zones of gap and thinning in the granite-metamorphic layer. The crust thickness beneath oil-gas regions is decreased on 3-4 km, and the lithosphere thickness - on 30-50 km. Studied regions are characterized by typical features of the rift structures.......

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  • 2019  № 4, pp. 42-51

POSSIBILITIES OF AIRBORNE GEOPHYSICS FOR GOLD-ORE DEPOSITS OF DIFFERENT TYPE

(Kertsman V.M. Moilanen E.V. Podmogov Yu.G. )

We consider efficiency increasing of a complex exploration works by search of gold ore. We prove rationality of use of the modern airborne geophysical complex at all stages of geological and exploration works on gold. We consider results of airborne geophysics at the Central African Ridge area. We discuss mapping results for 500 m between lines data and infill survey results for 100 m between lines data.......

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  • 2019  № 4, pp. 52-59
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