--> Abstract: Basin-Centered Gas Accumulation, Dneiper-Donetsk Basin and Donbas Region, Ukraine, by B. E. Law, B. P. Kabyshev, A. Y. Polutranko, G. F. Ulmishek, and T. M. Prigarina; #90942 (1997).
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Abstract: Previous HitBasinNext Hit-Previous HitCenteredNext Hit Previous HitGasNext Hit Accumulation, Dneiper-Donetsk Basin and Donbas Region, Ukraine

LAW, B.E., B.P. KABYSHEV, A.Yu. POLUTRANKO, G.F. ULMISHEK, and T.M. PRIGARINA

A large Previous HitbasinNext Hit-Previous HitcenteredNext Hit Previous HitgasNext Hit accumulation has been identified in the Dneiper- Donetsk Basin and Donbas region of Ukraine. The identification of the Previous HitgasNext Hit accumulation was facilitated by the utilization of analogs from North America and the interpretation of drilling reports, pressure, temperature, fluid recovery, and thermal maturity data. The Previous HitgasNext Hit accumulation occurs in low-permeability, Carboniferous age sandstones at depths ranging from a few hundred meters in the Donbas region to about 4.5 kilometers in the central part of the Dneiper-Donetsk Basin. Indirect evidence indicates that abnormally high pressures are coincident with the Previous HitgasNext Hit accumulation in the deeper parts of the Dneiper-Donetsk Basin, whereas abnormally low pressures are coincident with the Previous HitgasNext Hit accumulation in the Donbas region. The top of the Previous HitgasNext Hit accumulation in the Dneiper-Donetsk Basin is nearly coincident with the 0.9% Ro isoreflectance line and the 100 degreesC isotherm line. However, in the structurally inverted Donbas region adjacent to the Dneiper-Donetsk Basin, the strata are in a state of extreme thermal disequilibrium; present-day temperatures and vitrinite reflectance cannot be used to estimate the depth to the top of the Previous HitgasNext Hit accumulation. The thickness of the Previous HitgasNext Hit accumulation is uncertain but it is at least 1,000 m through most of the basin. The source of the Previous HitgasNext Hit is inferred to be the interbedded coal beds and other carbonaceous lithologies. In order to exploit this large Previous HitbasinNext Hit-Previous HitcenteredNext Hit Previous HitgasNext Hit accumulation, we suggest that future Previous HitexplorationTop efforts focus on identifying structural and stratigraphic "sweet spots" within the upper part of the accumulation.

AAPG Search and Discovery Article #90942©1997 AAPG International Conference and Exhibition, Vienna, Austria