发明名称 |
Well fluid sampling tool |
摘要 |
PCT No. PCT/GB91/00224 Sec. 371 Date Aug. 17, 1992 Sec. 102(e) Date Aug. 17, 1992 PCT Filed Feb. 14, 1991 PCT Pub. No. WO91/12411 PCT Pub. Date Aug. 22, 1991.A well fluid sampling tool and method for retrieving single-phase hydrocarbon samples from deep wells. The sampling tool is lowered to the required depth, an internal sample chamber is opened to admit well fluid at a controlled rate, and the sample chamber is then automatically sealed. The well fluid sample is immediately subjected to a high pressure to keep the sample in its original single-phase form until it can be analyzed. The sample is pressurized by a hydraulically-driven floating piston powdered by high-pressure gas acting on another floating piston. Once sampling is initiated, e.g. by an internal clock, the entire sequence is automatic. Also disclosed is a sample transfer container for securing the pressurized sample from the tool and maintaining it in single-phase form during transport to an analytical laboratory. This invention avoids the disadvantages arising from phase separation of hydrocarbon well fluid samples.
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申请公布号 |
US5337822(A) |
申请公布日期 |
1994.08.16 |
申请号 |
US19920920380 |
申请日期 |
1992.08.17 |
申请人 |
MASSIE, KEITH J.;BROWN, JONATHAN W.;MCGILVRAY, JAMES A. |
发明人 |
MASSIE, KEITH J.;BROWN, JONATHAN W.;MCGILVRAY, JAMES A. |
分类号 |
E21B49/08;(IPC1-7):E21B49/08 |
主分类号 |
E21B49/08 |
代理机构 |
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