发明名称 |
Closed loop fluid-handling system for use during drilling of wellbores |
摘要 |
<p>This invention provides a fluid-handling system for use in underbalanced drilling operations. The system includes a first vessel which acts as a four phase separator. The first vessel includes a first stage for separating solids. Oil and gas are separated at a second stage. A pressure sensor provides signals to a pressure controller, which modulates a gas flow valve coupled to the vessel for discharging gas from the first vessel. The pressure controller maintains the pressure in the first vessel at a predetermined value. An oil level sensor placed in the first vessel provides a signal to an oil level controller. The oil level controller modulates an oil flow valve coupled to the vessel to discharge oil from the first vessel into a second vessel. Water is discharged into a third vessel. Water from the third vessel is discharged via a water flow control valve, which is modulated by a level controller as a function of the water level in the third vessel. Any gas in the third vessel is discharged by modulating a gas control valve as a function of the pressure in the third vessel. <IMAGE></p> |
申请公布号 |
EP1048819(A1) |
申请公布日期 |
2000.11.02 |
申请号 |
EP20000112899 |
申请日期 |
1997.05.05 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
BRADFIELD, DAVID, H.;CUMMINS, DAVID P.J.;BRIDGER, PHILIP J. |
分类号 |
E21B44/00;E21B21/00;E21B21/06;E21B21/08;E21B21/14;(IPC1-7):E21B21/08 |
主分类号 |
E21B44/00 |
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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