发明名称 |
METHOD FOR SIMULTANEOUS MEASUREMENT OF BOREHOLE AND FORMATION NEUTRON LIFETIMES |
摘要 |
<p>METHOD FOR SIMULTANEOUS MEASUREMENT OF BOREHOLE AND FORMATION NEUTRON LIFETIMES (Docket No. - WPC-19) The present invention concerns methods for measuring simultaneously the formation and borehole components of thermal neutron lifetime as decay time. The borehole and formation are irradiated with pulsed 14 MEV neutrons. During the interval between neutron pulses the capture gamma radiation is measured in at least four, non-overlapping, contiguous time gates. A background radiation measurement is also periodically made. The background corrected capture gamma radiation measurements are combined to derive simultaneously, the formation and borehole neutron lifetime components which are then recorded as a function of borehole depth.</p> |
申请公布号 |
CA1162660(A) |
申请公布日期 |
1984.02.21 |
申请号 |
CA19810382171 |
申请日期 |
1981.07.21 |
申请人 |
HALLIBURTON COMPANY |
发明人 |
SMITH, HARRY D.;ARNOLD, DAN M. |
分类号 |
G01N23/222;G01V5/10;(IPC1-7):G01V5/10 |
主分类号 |
G01N23/222 |
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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