INTERPRETATION OF GAS-DYNAMIC WELL TEST DATA IN A FRACTURED-POROUS RESERVOIR WITH ACCOUNT FOR FRACTURE DEFORMABILITY
M.N. Shamsiev1,2, M.Kh. Khairullin1,2, P.E. Morozov1,2, V.R. Gadil’shina1,2, A.I. Abdullin2
1Petroleum Higher School, Almetyevsk, Russia
2Institute of Mechanics and Engineering, Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russia
Keywords: fractured-porous reservoir, well testing, reservoir deformation, inverse problem
Abstract
A mathematical model of real-gas flow to a vertical well in a fractured-porous reservoir is proposed, incorporating the pressure dependence of fracture porosity and permeability. The behavior of the bottomhole pressure and its time derivative is analyzed as a function of various formation parameters. A method for interpreting gas-dynamic well test data in fractured-porous reservoirs is developed, accounting for the pressure dependence of fracture permeability within the framework of inverse problem theory. Test calculation results are presented.
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