发明名称 Method of calibrating a well pumpoff controller
摘要 A method of calibrating a well pumpoff controller by calibrating the controller for determining the average load during a pumping stroke, measuring the actual load and averaging the measured maximum and minimum load during each operational stroke, comparing the average measured load with the calibrated average load and providing an offset to the load measurement to correct the measured load towards the calibrated load.
申请公布号 US5167490(A) 申请公布日期 1992.12.01
申请号 US19920859747 申请日期 1992.03.30
申请人 DELTA X CORPORATION 发明人 MCKEE, FOUNT E.;CRUME, DOUGLAS M.
分类号 E21B47/00 主分类号 E21B47/00
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