This paper presents a new, patented1,2  approach to the testing and evaluation of a pumping oil well.3  For an actively pumping well, the test provides the flowing bottom-hole pressure, the flow rate at which gas is liberated up the annulus, and the pumping rate of the bottom-hole pump.

When the well is shut in, the technique can be used to determine the bottom-hole pressure as a function of time. This information can be used in conventional pressure-buildup analysis for damage, transmissibility, and static pressures.

Keywords:
Upstream Oil & Gas, well analysis, bottom-hole pressure, surface pressure, gradient, drillstem/well testing, flow rate, vdp dt pdv dt, sonic fluid level 2790, constant-pressure model
Subjects:
Formation Evaluation & Management, Drillstem/well testing
Copyright 1980, Society of Petroleum Engineers
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