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公开(公告)号:US12129741B2
公开(公告)日:2024-10-29
申请号:US17668562
申请日:2022-02-10
发明人: Jan Ove Soerheim , Tollef Svenum
CPC分类号: E21B41/0035 , E21B7/06 , E21B7/061 , E21B34/06 , E21B43/10
摘要: A method for installing a dual/multiple lateral well where the overburden casing is relatively narrow includes drilling a single diameter bore for the first lateral and employing a tapered liner. The liner has a narrow production section (109) and a larger diameter proximal section (104). A hollow whipstock (113) is run into the well and a window is milled in the proximal section (104) of the tapered liner, allowing a branched lateral B (115) to be drilled and then a liner (116) run through it.