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Reservoir geomechanics
Reservoir Geomechanics includes elements of rock mechanics, structural geology, earthquake seismology and petroleum engineering. The topic is relevant to practical issues such as prediction of pore pressure, estimation of hydrocarbon column heights and fault seal potential, determination of optimally stable well trajectories, casing set points and mud weights, changes in reservoir performance during depletion, and production-induced faulting and subsidence. Source: Stanford.
Summary Eaton’s equation is the most popularly used model for pore pressure prediction, but it is based on over-simplified stress velocity relation. A new model for pore prediction was brought up based on stress effect modeling of lab core measurement. The new model requires exactly the same inputs and should have better performance in pore pressure prediction. Then performances of pore pressure prediction by using differential pressure and effective pressure respectively are compared. Due to delicacy in estimating the effective stress coefficient and complexity of in-situ fluid properties, introduction of effective pressure might not improve pore pressure prediction results. Our new model has been successfully applied to field data.
differential pressure, Eaton, effective pressure, effective stress coefficient, equation, Lab Measurement, new model, normal velocity trend, pore pressure, prediction, prediction result, pressure prediction, relation, Reservoir Characterization, reservoir geomechanics, seg las vegas 2012, stress effect, Upstream Oil & Gas, velocity trend
SPE Disciplines: Reservoir Description and Dynamics > Reservoir Characterization > Reservoir geomechanics (1.00)