发明名称 |
Method for creating secondary sidetracks in a well system |
摘要 |
A method is disclosed for creating one or more secondary sidetracks in an oil and/or gas well assembly which comprises a primary wellbore (2) and one or more primary sidetracks (6) so that a root-like multilateral well structure is created. The method makes use of an expandable well liner (9) in the primary sidetracks (6) so as to create a liner having a sufficient internal width to allow sidetracking equipment to be inserted and operated in the primary sidetrack to drill and complete the secondary sidetracks (7). |
申请公布号 |
EG22061(A) |
申请公布日期 |
2002.06.30 |
申请号 |
EG19990001667 |
申请日期 |
1999.12.28 |
申请人 |
SHELL INTERNATIONAL RESEARCH MAATSCHAPPIJ BV |
发明人 |
BUREN VAN MARKUS |
分类号 |
E21B41/00;E21B43/10;(IPC1-7):E21B43/10 |
主分类号 |
E21B41/00 |
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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