Development of Laboratory and Petrophysical Tec...
SKU: GRI-93/0009
Development of Laboratory and Petrophysical Techniques for Evaluating Shale Reservoirs
Development of evaluation techniques to better define reservoir characteristics is described on the basis of considerable amount of information collected on three key wells in the Experimental Development area of Pike County, Kentucky. The data consisted of core analysis, well logs, mudlogs, borehole television, stress, permeability, and production tests, integrated for refining the existing models.
Summary:
Development of evaluation techniques to better define reservoir characteristics is described on the basis of considerable amount of information collected on three key wells in the Experimental Development area of Pike County, Kentucky. The data consisted of core analysis, well logs, mudlogs, borehole television, stress, permeability, and production tests, integrated for refining the existing models. Refinements were made to the shale-specific log analysis model, enabling very accurate determinations of lithology, porosity, and hydrocarbon content and providing improvements necessary to develop a producibility index utilizing log measurements. Formation stress was calculated from the logs and compared favorably to the measured values. Knowledge of stress contrasts will aid in the design of stimulation treatments. Several devices were utilized to identify fractures, with the results evaluated against whole core descriptions. Laboratory techniques were developed for determining matrix permeability in the presence of fractures in core samples. Hydrocarbon logs, as developed in the GRI Hydrocarbon model, were constructed as an interpretation scheme for gas and oil concentrations in cuttings, and determination of qualitative changes in matrix permeability. The report contains several appendixes illustrating the work performed.
