Analysis Of Geomechanical Properties In Well Design And Well Optimization
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 30, Vol 1, Issue 4
Abstract
Main aspect in wellbore instability is the selection of an appropriate rock failure criterion. This criterion i only the maximum and minimum principal stresses σ 2 has no influence on the rock strength. When Mohr experimental evidence from conventional triaxial test ( Coulomb criterion has been extensively used to represent rock failure under the polyaxial stress state ( σ 2 = σ 3 ). In contrast to the prediction of redistribution Mohr suggest that σ 2 thus indeed have a strengthening effect. This research shown that Mohr only represent, that triaxial stress state ( linear failure criterion has been justified by experimental evidence from triaxial tests as well as polyaxial test. It is natural extension of the classical Mohr only represents rock failure under triaxial stress state, it is expected to be conservative in predicting well bore instability. The 3D analytical model employed by Mogi to calculate the stresses. A model was developed of the formation was found to be 0.9180psi/ft and decreases to 0.420psi/ft at depth 7300ft. The membrane efficiency of the formation increases from 0.698 to 0.719 at the depth considered
Authors and Affiliations
Odumosu M. O
Keywords
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