| 发明名称 |
TOE CIRCULATION SUB |
| 摘要 |
A toe circulation sub for a wellbore liner, the toe circulation sub comprising: a body including a connection for connecting the body to a wellbore liner to define an inner facing portion open to an inner diameter of the liner and an outer facing portion open to an outer surface of the liner; a bore through the body from the inner facing portion to the outer facing portion; and, a ball seat in the bore formed to stop and seal with a ball to plug flow through the bore to close the toe circulation sub. The toe circulation sub is useful for methods and may be installed in a wellbore liner. |
| 申请公布号 |
US2015075806(A1) |
申请公布日期 |
2015.03.19 |
| 申请号 |
US201314382856 |
申请日期 |
2013.03.07 |
| 申请人 |
PACKERS PLUS ENERGY SERVICES INC. |
发明人 |
Themig Daniel Jon |
| 分类号 |
E21B34/14;E21B17/00;E21B43/10;E21B33/12 |
主分类号 |
E21B34/14 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A toe circulation sub for a wellbore liner, the toe circulation sub comprising:
a body including a connection for connecting the body to a wellbore liner to define an inner facing portion open to an inner diameter of the liner and an outer facing portion open to an outer surface of the liner; a bore through the body from the inner facing portion to the outer facing portion; and, a ball seat in the bore formed to stop and seal with a ball to plug flow through the bore to close the toe circulation sub. |
| 地址 |
Calgary CA |
