发明名称 |
Through-tubing rotary drilling |
摘要 |
A method for recompleting a wellbore containing a casing and a tubing string extending from a surface through the casing to a zone of interest by through-tubing rotary drilling by forming an opening through the casing at a selected point, passing a rotatable drill string including a drill bit through the tubing and drilling a second wellbore by drilling out of the cased wellbore through the opening.
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申请公布号 |
US5860474(A) |
申请公布日期 |
1999.01.19 |
申请号 |
US19970882970 |
申请日期 |
1997.06.26 |
申请人 |
ATLANTIC RICHFIELD COMPANY |
发明人 |
STOLTZ, DANIEL S.;NIMS, DAVID G. |
分类号 |
E21B7/06;E21B7/08;E21B29/06;E21B43/10;(IPC1-7):E03B3/11 |
主分类号 |
E21B7/06 |
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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