发明名称 |
METHOD AND APPARATUS FOR STAGE CEMENTING A LINER IN A WELL BORE HAVING A CASING |
摘要 |
The present invention relates to a method and apparatus for cementing a liner in a well bore having a casing wherein the liner is connected to a running tool and includes hanger means for securing the liner to the casing in the well bore. The liner includes an upper and lower liner portion each having port means therein and means to lock the telescoping liner portions against relative longitudinal movement to prevent premature actuation or operation of the port means. The liner portions provide a mechanically actuated port arrangement to be employed with first and second liner wiper means and first and second pump down plug means for cementing above a packer on the lower liner portion, or for providing dual stage cementing. |
申请公布号 |
GB2221482(B) |
申请公布日期 |
1992.07.08 |
申请号 |
GB19880029106 |
申请日期 |
1988.12.14 |
申请人 |
* TEXAS IRON WORKS INC;* TIW CORPORATION |
发明人 |
SAMUEL FRED * BAKER;BRITT OLIVER * BRADDICK |
分类号 |
A21B1/26;E21B33/14;E21B33/16;E21B43/10 |
主分类号 |
A21B1/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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