Vol. 5, No. 1, 2010

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ISSN: 1559-3959
Poromechanics response of an inclined borehole subject to in-situ stress and finite length fluid discharge

Younane N. Abousleiman and Shengli Chen

Vol. 5 (2010), No. 1, 47–66
Abstract

The analytical approach developed in this paper calculates the poroelastic coupled time-dependent stress and pore pressure variations for an inclined borehole drilled in a fluid saturated porous medium and subjected to the far-field three-dimensional in-situ stresses in addition to a fluid discharge over a finite length of its surface. This problem is encountered in many engineering applications, in particular, in wellbore drilling, fluid injection, and production. A superposition scheme is employed to obtain the analytical solutions within the linear theory of poromechanics. The comparison with an earlier published solution shows a discrepancy in the poroelastic boundary conditions applied at the wellbore wall. In this solution a systematic analysis is being carried out to evaluate the effects of the mechanical parameters on the calculated time-dependent effective tangential stress and pore pressure in addition to the effects of the borehole inclination and the geometry of the flux loading area are also included.

Keywords
inclined borehole, poromechanics, fluid discharge, stress and pore pressure, hydraulic fracturing, integral transform
Milestones
Received: 3 March 2009
Revised: 23 July 2009
Accepted: 3 August 2009
Published: 19 April 2010
Authors
Younane N. Abousleiman
The University of Oklahoma
Poromechanics Institute
Mewbourne School of Petroleum & Geological Engineering
100 East Boyd Street
Norman, OK 73019-1014
United States
Shengli Chen
The University of Oklahoma
Poromechanics Institute
Mewbourne School of Petroleum & Geological Engineering
100 East Boyd Street
Norman, OK 73019-1014
United States