| 发明名称 |
GAS LIFT VALVE WITH CENTRAL BODY VENTURY FOR CONTROLLING THE FLOW OF INJECTION GAS IN OIL WELLS PRODUCING BY CONTINUOUS GAS LIFT |
| 摘要 |
<p>The present invention relates to a gas lift valve for use in an oil well producing by means of gas lift, said gas lift valve making use of a central body venturi for both controlling the flow of the injection gas from the annulus between the tubing and the casing of the oil well, and precluding a reverse flow of fluids from said oil well towards said annulus to occur.</p> |
| 申请公布号 |
EP1360418(A1) |
申请公布日期 |
2003.11.12 |
| 申请号 |
EP20020715328 |
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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