发明名称 |
Systems and methods for production of gas wells |
摘要 |
A method for producing gas from a well including a wellbore extending from a surface into a subterranean formation, wherein the well also produces liquid, the method including: (a) producing gas from a production zone in the subterranean formation through an annulus extending within the wellbore at a first velocity that is greater than a critical velocity, and (b) pumping liquid through a liquid tubing string after (a) to reduce a level of the liquid within the wellbore. The method also includes: (c) shutting in the annulus after (a) after the first velocity decreases below the critical velocity, wherein the annulus has a first cross-sectional area and the first production string has a second cross-sectional area that is less than the first cross-sectional area, and (d) producing gas from the production zone through the first production tubing string after (c) at a second velocity being greater than the critical velocity. |
申请公布号 |
US9470076(B2) |
申请公布日期 |
2016.10.18 |
申请号 |
US201414339334 |
申请日期 |
2014.07.23 |
申请人 |
BP Corporation North America Inc. |
发明人 |
Edwards Paul A.;Idstein Timothy |
分类号 |
E21B43/14;E21B43/12 |
主分类号 |
E21B43/14 |
代理机构 |
|
代理人 |
Wood John L. |
主权项 |
1. A method for producing gas from a well including a wellbore extending from a surface into a subterranean formation, wherein the well also produces a liquid, the method comprising:
(a) producing gas from a production zone in the subterranean formation through an annulus extending within the wellbore at a first velocity that is greater than a critical velocity; (b) shutting in the annulus after (a) after the first velocity decreases below the critical velocity, wherein the annulus has a first cross-sectional area and a first production string has a second cross-sectional area that is less than the first cross-sectional area; (c) producing gas from the production zone through the first production tubing string after (b) at a second velocity that is greater than the critical velocity; and (d) pumping liquid through a liquid tubing string with a pump during (c) to reduce a level of the liquid within the wellbore. |
地址 |
Houston TX US |