发明名称 |
Flowshot technique |
摘要 |
A pulsed neutron source irradiates an earth formation. The irradiation produces N<SUP>16 </SUP>from O<SUP>16 </SUP>in a fluid in the borehole, and the gamma rays produced by the subsequent decay of N<SUP>16 </SUP>are detected by a plurality of spaced apart detectors. The count rates of the detectors are accumulated over a time sampling interval to produce temporal signals. Processing of the temporal signals using correlation, differentiation and/or semblance techniques is used for determination of the flow velocity of one or more fluids in the borehole.
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申请公布号 |
US2005284627(A1) |
申请公布日期 |
2005.12.29 |
申请号 |
US20050158500 |
申请日期 |
2005.06.22 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
RILEY STEPHEN;GUIVARCH BENOIT;TRCKA DARRYL E.;CHACE DAVID M. |
分类号 |
E21B47/00;E21B43/02;E21B43/12;E21B47/12;G01F1/708;G01P5/20;(IPC1-7):E21B43/02 |
主分类号 |
E21B47/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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