发明名称 |
METHOD FOR DETERMINING FORMATION DENSITY AND FORMATION PHOTO-ELECTRIC FACTOR WITH A MULTI-DETECTOR-GAMMA-RAY TOOL |
摘要 |
This invention is an advanced method for determining formation density in an array-detector density tool. The use of three or more detectors yields an im proved accuracy and precision of the formation density measurement even in the pres ence of a large standoff between the tool and the formation. A more accurate photoel ectric factor is determined through a new single detector algorithm. Use of the inf ormation on the photoelectric effect and the density from the three detectors allows the measurement of a photoelectric effect compensated for stand off and the phot oelectric factor of the mudcake. The use of the multi-detector density answers allows for a consistency check and therefore a much improved quality control of the densi ty measurement.
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申请公布号 |
CA2230880(C) |
申请公布日期 |
2001.04.17 |
申请号 |
CA19982230880 |
申请日期 |
1998.03.02 |
申请人 |
SCHLUMBERGER CANADA LIMITED |
发明人 |
WRAIGHT, PETER D.;PHILIP, OLIVIER;DASGUPTA, URMI;STOLLER, CHRISTIAN;WIJEYESEKERA, NIHAL I. |
分类号 |
G01V5/12;(IPC1-7):G01V5/12 |
主分类号 |
G01V5/12 |
代理机构 |
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主权项 |
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地址 |
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