发明名称 |
ОПРЕДЕЛЕНИЕ СКОРОСТИ ПОТОКА ЖИДКОСТИ В СТВОЛЕ СКВАЖИНЫ МЕТОДОМ ИМПУЛЬСНОГО ОБЛУЧЕНИЯ |
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. |
申请公布号 |
RU2007103301(A) |
申请公布日期 |
2008.08.10 |
申请号 |
RU20070103301 |
申请日期 |
2005.06.27 |
申请人 |
БЕЙКЕР ХЬЮЗ ИНКОРПОРЕЙТЕД (US) |
发明人 |
РАЙЛИ Стивен (GB);ГВИВАР Бенуа Ж. (FR);ТРЦКА Даррил (US);ЧЕЙС Дейвид М. (US) |
分类号 |
E21B47/00;G01V5/10;E21B43/02;E21B43/12;E21B47/12;G01F1/708;G01P5/20 |
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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