发明授权
- 专利标题： Compensated caliper using combined acoustic and density measurements
- 专利标题（中）： 补偿卡尺使用组合的声学和密度测量
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申请号： US11770209申请日： 2007-08-10
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公开(公告)号： US07596452B2公开(公告)日： 2009-09-29
- 发明人: William Madigan , Eric B. Molz , Gamal A. Hassan , Philip L. Kurkoski
- 申请人： William Madigan , Eric B. Molz , Gamal A. Hassan , Philip L. Kurkoski
- 申请人地址： US TX Houston
- 专利权人： Baker Hughes Incorporated
- 当前专利权人： Baker Hughes Incorporated
- 当前专利权人地址： US TX Houston
- 代理机构： Madan & Sriram, P.C.
- 主分类号： G01V1/40
- IPC分类号： G01V1/40
摘要：
A logging-while-drilling density sensor includes a gamma ray source and at least two NaI detectors spaced apart from the source for determining measurements indicative of the formation density. An analytic function based on a heuristic model is used to predict the measured response as a function of offset, mud density and formation density. The model may be used to provide a caliper measurement where acoustic caliper data are unreliable.
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