Hydrodynamic analysis of the displacement conditions of formation fluids using an axisymmetric model

I. B. Chernoshchuk

Lavrent’ev Institute of Hydrodynamics, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090

Abstract: The axisymmetric problem of the displacement of formation fluids by a drilling mud filtrate with filter cake formation is considered. An analysis is made of the distribution and variation of the main parameters of the process: filtrate volume, filter cake thickness, oil saturation, and pressure. The positions of the water-saturation and salt-concentration fronts are determined. The results are compared with the geophysical logging data for straight-hole drilling.

Keywords: invaded zone, oil saturation, salt concentration, pressure, filtrate volume, filter cake.

UDC: 532.546

Received: 21.06.2004
Accepted: 18.05.2007

 English version: Journal of Applied Mechanics and Technical Physics, 2008, 49:2, 201–208

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