发明名称 CIRCULATION CONTROL DEVICE WITHIN A WELL BORE
摘要 A control device for regulating flow of fluid selectively with respect to tw o passages (12, 13) of a completion tool positioned within well bore tubing. T he device incorporates a valve (20) that is electrically driven to selectively block to prevent fluid flow through one of two passages (12, 13) of a Y-tool (10). The device operates to prevent recirculation of product fluid when an electrical submersible pump (ESP) (15) is operating and alternately closes this passage with respect to fluid flow when the pump (15) is not operating to permit intervention work within the well bore below the location of the ESP (15).
申请公布号 CA2441748(A1) 申请公布日期 2002.09.26
申请号 CA20022441748 申请日期 2002.03.08
申请人 VARCO I/P, INC. 发明人 NORRIS, ROBERT M.
分类号 E21B34/06;E21B34/08;E21B43/12;(IPC1-7):E21B43/12 主分类号 E21B34/06
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