Application of Stress-Dependent Rock Properties in Reservoir Studies

Abstract

TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractJones 1 previously developed smooth, non-linear equations for fitting permeability, PV, or porosity data at multiple net hydrostatic confining stresses. The present paper supplements the original by illustrating steps required to convert these measurements into curves for uniaxial strain conditions. The concepts of specific pore volume and specific bulk volume are introduced. These dimensionless values are independent of sample size, and are more useful than pore volume or bulk volume when comparing samples. The latter is useful for subsidence calculations.An averaging technique for the reduction of normalized PV, porosity, or permeability with increasing net stress is also demonstrated for samples from a particular lithology. Samples that do not fit the general trend are easily identified, and can be excluded from averaging if desired. Studies in California reservoirs suggest that stress-related permeability reduction correlates with corresponding reduction in porosity better than permeability correlates with porosity.

Experimental study on stress sensitivity of high‐temperature and high‐pressure sandstone gas reservoirs in Yingqiong Basin

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The Role of Drive Mechanisms in Redesigning Development Practices in a Fractured Tight Oil Carbonate Resource

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