| 发明名称 |
GAS LIFT VALVE WITH CENTRAL BODY VENTURY FOR CONTROLLING THEFLOW OF INJECTION GAS IN OIL WELLS PRODUCING BY CONTINUOUS GAS LIFT |
| 摘要 |
<p>The present invention relates to a gas lift valve (34) for use in an oil wel l producing by means of gas lift, said gas lift valve (34) making use of a central body venturi (40) for both controlling the flow of the injection gas from the annulus (6) between the tubing (3) and the casing (2) of the oil well, and precluding a reverse flow of fluids from said oil well towards sai d annulus(6).</p> |
| 申请公布号 |
CA2435580(A1) |
申请公布日期 |
2002.08.01 |
| 申请号 |
CA20022435580 |
申请日期 |
2002.01.17 |
| 申请人 |
PETROLEO BRASILEIRO S.A. - PETROBRAS |
发明人 |
RESENDE DE ALMEIDA, ALCINO |
| 分类号 |
E21B34/06;E21B34/10;E21B43/12;E21B43/16;F04F;F04F1/20;F16K15/02;(IPC1-7):F04F1/20 |
主分类号 |
E21B34/06 |
| 代理机构 |
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