Intensity investigation of fluid exchange between the layers of different permeability at cyclic impact on oil reservoir

About the authors:

Olga Yu. Boldyreva, Cand. Sci. (Phys.-Math.), Senior Researcher, Tyumen Branch of the Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences; timms@ikz.ru

Lyubov N. Sokoliuk, senior researcher, institute of theoretical and applied mechanics, Tyumen branch, Siberian branch, Russian Academy of Sciences
Lyudmila N. Filimonova, Junior Researcher, Tyumen Branch of the Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences; Postgraduate Student, Tyumen Scientific Center of the Siberian Branch of the Russian Academy of Sciences; eLibrary AuthorID, ORCID, filimonovaln@mail.ru

Abstract:

Cyclic impact on oil reservoir has been investigated since the middle of the 60s. At water injection, the pressure in high-permeable zones is restored quicker than in low-permeable ones; therefore, there are pressure differences between these zones causing fluid overflows. The non-stationary filtration mode at which there is a regular redistribution of pressure in a reservoir is caused. An analytical 2D solution for the fluid exchange between high-permeable and low-permeable reservoirs is obtained in this paper. The period and amplitude influence in an injection well on an average speed of vertical flows between the reservoirs is studied. The calculation results show that the method of well arrangement has insignificant impact on flow rate: the flow may change by 15% at different well arrangement.

References:

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