Determination of the effective reservoir capacity for interpretation of pressure recovery curves recorded by instruments on a cable in an open hole

A technique is proposed for the effective thicknesses evaluation of a productive section based on determining the pressure recovery curve in various ways, depending on the type of section and reservoir conditions, as well as in combination with techniques used in the fields of Arctic shelf with gas condensate deposits. The issue was solved using a series of computational experiments based on a sector hydrodynamic model built to predict the flow rate based on the results of the wireline formation tests and well logging data. Well logging has high resolution; therefore, even in highly permeable intervals with high vertical anisotropy of permeability, the pressure pulse propagates vertically to the hydrodynamic boundaries of the interlayer and is not limited only by the height of the inlet port of the radial pressure or packer module of formation tester. When configuring the model, the pressure change history coincided with the similar data on formation tester, taking into account the porosity and permeability properties of the reservoir. Based on the conducted research, the consistency of the developed approach of integrating the results of the hydrodynamic logging with hydrodynamic studies data in the gas saturated intervals of the studied objects of the Arctic offshore is proved.

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