发明名称 |
DETERMINING WETTABILITY OF AN OIL RESERVOIR USING BOREHOLE NMR MEASUREMENTS |
摘要 |
A method for determining downhole reservoir wettability includes acquiring a first set of NMR measurements of formation fluids in earth formations at a selected axial depth; inverting the first set of the NMR measurements to produce a first distribution of a spin relaxation parameter for a fluid component in the formation fluids; acquirin g a second set of NMR measurements of a formation fluid sample removed by a formation fluid testing tool at the selected axial depth, the formation fluid sample being kept at a substantially same pressure and temperature as those of the formation fluids in the earth formations at the selected axial depth; inverting the second set of NMR measurements to produc e a second distribution of the spin relaxation parameter for the fluid component in the formation fluid sample; determining the reservoir wettability from a comparison of the first and second distributions of the spin relaxation parameter.
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申请公布号 |
CA2427903(C) |
申请公布日期 |
2006.08.15 |
申请号 |
CA20032427903 |
申请日期 |
2003.05.05 |
申请人 |
SCHLUMBERGER CANADA LIMITED |
发明人 |
HURLIMANN, MARTIN D.;FREEDMAN, ROBERT |
分类号 |
G01V3/32;E21B47/00;G01R33/44;G01R33/50 |
主分类号 |
G01V3/32 |
代理机构 |
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