Analysis of the efficiency of the application of a short-term periodic well operation mode on the example of the object of the achimovskaya sequence of one of the field in the western siberia
UDC: 622.276.031:532.6
DOI: 10.33285/2413-5011-2023-2(374)-48-53
Authors:
ABDULIN ILNUR K.1,
RYABOV IGOR V.1,
SHLYAPCHINSKIY ALEXANDER V.1,
LEONTEV SERGEY A.
2
1 LUKOIL-Engineering Limited KogalymNIPIneft Branch Office in Tyumen, Tyumen, Russia
2 Tyumen Industrial University, Tyumen, Russia
Keywords: capillarimetric studies, oil reservoir geometrization, Leverett function, water saturation
Annotation:
The technique of capillarimetric researches for geometrization of oil deposits is stated. In addition to the usual boundaries of the reservoir (the outer contour of the water-oil contact, the line of lithofacies replacement, an impermeable tectonic fault, etc.), a new type of the of the water-oil contact contour is justified. On the example of the D2st-ef layer of the reservoir (Eifel-Starooskol deposits of the Yarega field), it is shown that in some cases (in case of presence of appropriate reservoir properties), capillary forces in the rock can prevent oil migration along the lateral, thus leading to the proximity of oil-saturated interlayers to water-saturated ones on one and the same absolute level in the absence of any visible traditional reservoir boundary. Thus, use of capillary pressure curves makes it possible to reproduce the true geometry of the reservoir, to establish the discrepancy between the initial geological oil reserves, taking into account the results of capillarimetry and without them. The confirmation of the correctness of the results obtained is the deviation of the actual oil production from the design one as of January 1, 2022, which is minus 64 %.
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