发明名称 |
DETECTION OF GAS INFLUX INTO A WELLBORE |
摘要 |
An influx of gas into a borehole can be detected by deploying a string of acoustic sensors along a drill string or other conduit to monitor an acoustic characteristic, such as velocity or attenuation, of the drilling fluid present in the borehole. In response to detection of acoustic pulses propagating in the drilling fluid, the acoustic sensors generate signals that are representative of acoustic characteristics if the drilling fluid. Based on the generated signals, a data acquisition system can determine whether a change in the monitored acoustic characteristic is indicative of a gas influx. |
申请公布号 |
WO2012162212(A3) |
申请公布日期 |
2013.02.28 |
申请号 |
WO2012US38758 |
申请日期 |
2012.05.21 |
申请人 |
SCHLUMBERGER TECHNOLOGY B.V.;SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;PRAD RESEARCH AND DEVELOPMENT LIMITED;COATES, RICHARD T.;FROELICH, BENOIT;LAVRUT, ERIC |
发明人 |
COATES, RICHARD T.;FROELICH, BENOIT;LAVRUT, ERIC |
分类号 |
E21B47/16;E21B47/12;E21B47/26 |
主分类号 |
E21B47/16 |
代理机构 |
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代理人 |
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地址 |
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