«Geology, geophysics and development of oil and gas fields»

The relationship of nonlinear filtration parameters in low-permeable reservoirs with filtration-capacitance properties

UDC: 622.276.031.011.433
DOI: -

Authors:

¹ Oil and Gas Research Institute Russian Academy of Sciences, Moscow, Russia
² National University of Oil and Gas "Gubkin University", Moscow, Russia
³ LUKOIL-Engineering in Volgograd, Volgograd, Russia

Keywords: low-permeable reservoir, nonlinear filtration laws, initial pressure gradient, limiting pressure gradient, phase permeability

Annotation:

The consequences of the nonlinear filtration law in low-permeable reservoirs are analyzed. The presence of variable phase permeability, depending on the operating pressure gradient, has been experimentally demonstrated. The presence of a limiting pressure gradient has been established, starting from which the permeability remains practically unchanged. Correlation relations have been established between the maximum pressure gradient and the variable filtration-capacitive properties of reservoir samples. The relationships between the nonlinearity parameters under the power law of filtration and the nonlinearity parameters under the law of filtration with an initial pressure gradient have been identified.

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