发明名称 |
Method and apparatus for using pulsed field gradient NMR measurements to determine fluid properties in a fluid sampling well logging tool |
摘要 |
A method for determining a formation fluid property includes acquiring a suite of nuclear magnetic resonance (NMR) measurements of a fluid sample using a pulse sequence that includes pulsed field gradient pulses for encoding diffusion information, wherein each NMR measurement in the suite is acquired with a different value in a parameter in the pulsed field gradient pulses for producing a different diffusion effect, wherein the acquiring is performed in a formation fluid sampling tool in a borehole; inverting the suite of NMR measurements to produce a distribution function that relates diffusion properties of the fluid sample with an NMR property of the fluid sample; and determining the formation fluid property from the distribution function.
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申请公布号 |
US7053611(B2) |
申请公布日期 |
2006.05.30 |
申请号 |
US20040860956 |
申请日期 |
2004.06.04 |
申请人 |
SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
FREEDMAN ROBERT |
分类号 |
G01V3/00;E21B47/00;E21B47/06;E21B49/08;G01N;G01N3/32;G01N24/08;G01R33/44;G01V3/32 |
主分类号 |
G01V3/00 |
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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