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configuring %s
konfigura hela %s
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enkoding deskonhecidu: %s
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%(name)s: %(value)s
%(naran)s: %(valor)s
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error reading file '%s': %s
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file '%s' is not a regular file or directory.
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requested", "minimummaximum
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the complexity of modern oil and gas exploitation requires a better understanding of geomechanical behavior of rocks at depth. this understanding large scale geology features like fault behavior and salt diapirs to near wellbore issues wellbore stability concerns. most important are tensile failure causing mud losses collapse hindering further drilling. the magnitude of this effect is increased when drilling in deep offshore ba or highly deviated wellbores. one major concern in these situations is reduction of the safe mud weight window between pore and fracture pressure which is a crucial factor in well design. as illustrate total overburden density decreases in deep offshore basins since the uppermost interval is water, which considerably less density than rock, and this reduce formation fracture resistance. this can also be described by the following equation for total overburden stress: arma 11-186 numerical study of fracture initiation, propagation enhance wellbore fracture gradient salehi, s. missouri university of science and technology nygaard, r. missouri university of science and technology, rolla, mo, usa copyright 2011 arma, american rock mechanics association this paper was prepared for presentation at the 4 2011. this paper was selected for presentation at the symposium by an arma technical program committee based on a technical and cri the paper by a minimum of two technical reviewers. the material, as presented, d members. electronic reproduction, distribution, or storage of any part of this paper for commercial purposes without the wri is prohibited. permission to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. the abstract must contain conspicuous acknowledgement of where and by whom the paper was presented. abstract: this paper presents finite-element near wellbore region. the main objective of these simulation when fractures are wedged and/or sealed during models were solved with finite-element simulations. of increasing fracture propagation pressure by fracture sealing compare it to the numerical simulation results analogous bridging and toughening mechanisms modeling was used as the primary methodology for simulating fractures initiation and propagation in each model. our results demonstrate that fracture more than its ideal state where no fracture exists, however this will fracture propagation which can act as secondary mechanism can be explained the existence of a strong barrier communication between wellbore and propagated fracture. the complexity of modern oil and gas exploitation of geomechanical . this ranges from features like fault to near wellbore issues such as ost important among these and borehole the magnitude of this when drilling in deep offshore basins or highly deviated wellbores. one major concern in safe mud weight window between pore and fracture pressure which is a crucial factor in well design. as illustrated by figure 1, in deep offshore basins since the uppermost interval is water, which has considerably less density than rock, and this reduces this can also be described by the following equation for total overburden stress:
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