发明名称 |
Downhole flow meter |
摘要 |
<p>This invention comprises the use of a variable orifice valve as a flow controller and flow meter. Pressure measurements are taken upstream and downstream of the variable orifice valve by way of a differential pressure measurement mechanism. The differential pressure measurement mechanism may comprise two separate absolute pressure measurement devices or a single differential pressure measurement device. Flow rate through the valve is determined from the pressure drop across the valve. In wellbores having multiple zones, a variable orifice valve together with a differential pressure measurement mechanism may be deployed for each zone. The flow rate through each of the zones and at the surface can then be monitored and controlled.</p> |
申请公布号 |
GB2376530(B) |
申请公布日期 |
2003.10.22 |
申请号 |
GB20020022689 |
申请日期 |
2001.03.22 |
申请人 |
* SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
TERIZHANDUR S * RAMAKRISHNAN;GARY MARTIN * ODDIE;SAM * SIMONIAN |
分类号 |
E21B34/06;E21B43/14;E21B47/06;E21B47/10;E21B47/12;G01F1/40;(IPC1-7):E21B34/06 |
主分类号 |
E21B34/06 |
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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