Unsteady testing for oil and gas well includes testing of drawdowncurve and build-up curve.
油井和气井的压力不稳定测试,包括压降曲线测试和压力恢复测试。
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This theory has been proved by gas well test in field. According to the apparent steady state date in pressure drawdowncurve, the control reserves of a gas well can be calculated correctly.