发明名称 |
SYSTEMS AND METHODS FOR DEEP-LOOKING NMR LOGGING |
摘要 |
An NMR logging tool for conducting NMR measurements in a plurality of sensitive volumes ranging up to a meter from the tool. The tool comprises a magnetic assembly using one or more permanent magnets and at least one pole piece for extending a magnet pole and shaping the magnetic field to simulate a magnetic monopole in a sensitive volume within the formation. Different embodiments of a segmented antenna enable directional NMR logging. The tool embodiments and methods of their use are suitable for wireline or LWD logging, and can be used for directional drilling.
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申请公布号 |
US2009072825(A1) |
申请公布日期 |
2009.03.19 |
申请号 |
US20080261343 |
申请日期 |
2008.10.30 |
申请人 |
PRAMMER MANFRED G;KNIZHNIK SERGEY;MENGER STEFAN K;GOODMAN GEORGE D;HARRIS III EDWARD J;DRACK EARLE |
发明人 |
PRAMMER MANFRED G.;KNIZHNIK SERGEY;MENGER STEFAN K.;GOODMAN GEORGE D.;HARRIS, III EDWARD J.;DRACK EARLE |
分类号 |
G01V3/00;G01R33/44;G01V3/32 |
主分类号 |
G01V3/00 |
代理机构 |
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