发明授权
- 专利标题: Use of downhole high pressure gas in a gas-lift well and associated methods
- 专利标题(中): 在气井中使用井下高压气体及相关方法
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申请号: US10220249申请日: 2001-03-02
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公开(公告)号: US07147059B2公开(公告)日: 2006-12-12
- 发明人: John M. Hirsch , George Leo Stegemeier , James William Hall , Harold J. Vinegar , Robert Rex Burnett , William Mountjoy Savage , Frederick Gordon Carl, Jr.
- 申请人: John M. Hirsch , George Leo Stegemeier , James William Hall , Harold J. Vinegar , Robert Rex Burnett , William Mountjoy Savage , Frederick Gordon Carl, Jr.
- 申请人地址: US TX Houston
- 专利权人: Shell Oil Company
- 当前专利权人: Shell Oil Company
- 当前专利权人地址: US TX Houston
- 代理商 Rachael Stiegel
- 国际申请: PCT/US01/06986 WO 20010302
- 国际公布: WO01/65062 WO 20010907
- 主分类号: E21B43/12
- IPC分类号: E21B43/12 ; E21B43/14 ; E21B43/00
摘要:
A gas-lift petroleum well and method for producing petroleum products using downhole pressurized gas to provide lift. The gas-lift well having a well casing, a production tubing, a packer, and a gas-lift valve. The well casing extends within a wellbore of the well, and the wellbore extends through oil and gas zones. The production tubing extends within the casing. The tubing having an opening formed therein, which is in fluid communication with an oil zone. The packer is located downhole in the casing and coupled to the tubing. The packer can have an electrically controllable packer valve, which is adapted to control a flow of downhole pressurized gas from one side of the packer to another. The downhole pressurized gas is provided by a gas zone that the wellbore passes through. The downhole gas-lift valve is coupled to the tubing and is adapted to control a flow of downhole pressurized gas into oil in the tubing for lifting the oil. The gas-lift valve can be an electrically controllable valve. The tubing and casing are used as electrical conductors for supplying power and/or communications downhole. The current in the tubing is routed using a ferromagnetic induction choke to create a voltage potential, which provides electrical power to downhole electrical devices. Also, there may be a bypass passageway to route downhole gas to gas-lift valves. There may also be downhole sensors to measure physical quantities (e.g., pressure). Such measurements can be used for feedback control of downhole electrically controllable valves.
公开/授权文献
- US20030024704A1 Use of downhole high pressure gas in a gas-lift well 公开/授权日:2003-02-06