发明授权
- 专利标题： Method and apparatus for determining the thermal neutron capture cross-section of a subsurface formation from a borehole
- 专利标题（中）： 用于从井眼确定地下地层的热中子捕获截面的方法和装置
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申请号： US11621474申请日： 2007-01-09
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公开(公告)号： US07439494B2公开(公告)日： 2008-10-21
- 发明人: W. Allen Gilchrist , Randolph J. Walser
- 申请人： W. Allen Gilchrist , Randolph J. Walser
- 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, Mossman & Sriram, P.C.
- 主分类号： G01V5/10
- IPC分类号： G01V5/10
摘要：
Data acquired using a pulsed nuclear source are susceptible to two sources of error. One error is due to large statistical noise towards the end of an acquisition window. Another source of error is the contamination of the early portion of the data by borehole and other effects. The beginning of the processing window is adjusted based on the signal level at the end of the processing window for the preceding pulsing of the source. The end of the processing window is derived from statistical considerations.
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