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; acquiring 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 produce 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.
|
申请公布号 |
US2004000905(A1) |
申请公布日期 |
2004.01.01 |
申请号 |
US20020064651 |
申请日期 |
2002.08.02 |
申请人 |
FREEDMAN ROBERT;HURLIMANN MARTIN D. |
发明人 |
FREEDMAN ROBERT;HURLIMANN MARTIN D. |
分类号 |
G01R33/44;G01R33/50;G01V3/32;(IPC1-7):G01V3/00 |
主分类号 |
G01R33/44 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|