发明名称 |
Methods and apparatus for optically measuring fluid compressibility downhole |
摘要 |
<p>The compressibility of a formation hydrocarbon sample is determined downhole by using a borehole tool to obtain the sample downhole, and, at two different pressures, subjecting the sample to near infrared illumination and conducting spectral absorption measurement of peaks at and/or around about 6,000 cm<-1> and/or at and/or about 5,800 cm<-1> (the absorption peaks of methane and crude oil respectively). The compressibility of the sample is determined from the change in the peak areas, the change in pressure, and the measured peak area itself. According to a preferred embodiment of the invention, the pressure is changed at least 2000 pounds per square inch (psi), and preferably 4000 or more psi between measurements. <IMAGE></p> |
申请公布号 |
EP1203942(A1) |
申请公布日期 |
2002.05.08 |
申请号 |
EP20010309278 |
申请日期 |
2001.10.31 |
申请人 |
SCHLUMBERGER HOLDINGS LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER TECHNOLOGY B.V. |
发明人 |
KURKJIAN, ANDREW LORIS;MULLINS, OLIVER C.;MCGOWAN, ROBIN;DISTEFANO, THOMAS;TRABOULAY, IAN |
分类号 |
E21B47/00;G01N21/27;G01N21/35;(IPC1-7):G01N21/35 |
主分类号 |
E21B47/00 |
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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