成本预算怎么做专利名称：Wireline formation tester supercharge correction method
伏龙山发明人：Mark A. Proett,Margaret C. Waid,Wilson C.
杜根定律>生态资源
会计专业毕业论文范本Chin
申请号：US08/614617
申请日：19960314
关于梦想的演讲公开号：US05644076A
公开日：
19970701
专利内容由知识产权出版社提供小溪流的歌
摘要：An improved formation testing method increas the accuracy of in-situ formation pressure measurements by characterizing the mudcake properties. Specifically, after a formation tester is lowered to a desired depth within a wellbore, a pad is extended to gently abut and al against the mudcake without disturbing the mudcake. When presd against the mudcake, the pad experiences momentarily higher pressures, which are measured by a probe houd by the pad. The pressures may be enhanced by briefly rejecting fluids through the probe, so as to avoid disturbing the mudcake. The probe continues to measure pressure, which eventually decreas relative to hydrostatic pressure in the wellbore, due to the flow of high- pressure wellbore fluids through the mudcake. Since the rate of fluid flow outward into the formation is governed by the permeability of the mudcake, measuring the rate of pressure decline during this initial period provides uful data to more accurately estimate properties such as formation compressibility. Additionally, indicia of the mudcake properties themlves may be generated. After the initial mudcake tests, the formation tester may be ud to perform drawdown and/or buildup tests, by a process of withdrawing or injection fluids into the
科目五
formation through the mudcake.
申请人：HALLIBURTON ENERGY SERVICES, INC.
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