The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 2012
Filed:
Jun. 13, 2008
Sheng-yuan Hsu, Sugar Land, TX (US);
Kevin H. Searles, Kingwood, TX (US);
Jon M. Wallace, Houston, TX (US);
Sheng-Yuan Hsu, Sugar Land, TX (US);
Kevin H. Searles, Kingwood, TX (US);
Jon M. Wallace, Houston, TX (US);
ExxonMobil Upstream Research Company, Houston, TX (US);
Abstract
Methods of predicting earth stresses in response to pore pressure changes in a hydrocarbon-bearing reservoir within a geomechanical system, include establishing physical boundaries for the geomechanical system and acquiring reservoir characteristics. Geomechanical simulations simulate the effects of changes in reservoir characteristics on stress in rock formations within the physical boundaries to determine the rock formation strength at selected nodes in the reservoir. The strength of the rock formations at the nodes is represented by an effective strain (ε), which includes a compaction strain (ε) and out-of-plane shear strains (Υ1-3, Y2-3) at a nodal point. The methods further include determining an effective strain criteria (ε) from a history of well failures in the physical boundaries. The effective strain (ε) at a selected nodal point is compared with the effective strain criteria (ε) to determine if the effective strain (ε) exceeds the effective strain criteria (ε).