The purpose of this paper is threefold:(1) to present a method of buildup analysis (RHM) that can determine the percentage of reservoir column open to the wellbore which is contributing reservoir fluid, (2) to determine the average permeability of the permeable portion of the reservoir open to the wellbore and (3) to determine the possible existence of a dual porosity system and the characteristics of the fracture or vugular system that might produce reservoir fluid into the wellbore. Since RHM is a relatively new concept, two appendices are attached to explain the general aspects of the RHM procedure. The writer presented a paper related to this one at the 1987 SPE Regional California Meeting in April, 1987, (see reference 4).

Keywords:
wellbore, permeability, upstream oil & gas, drillstem testing, static reservoir pressure, reservoir system, equation, horner plot, shutin time, effective rd
Subjects:
Hydraulic Fracturing, Well & Reservoir Surveillance and Monitoring, Reservoir Characterization, Fluid Characterization, Reservoir Fluid Dynamics, Reservoir Simulation, Formation Evaluation & Management, Flow in porous media, Pressure transient analysis, Drillstem/well testing
Copyright 1988, Society of Petroleum Engineers
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