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    • 7. 发明授权
    • Methods and apparatus for forming metal casings in well bores
    • 在井眼中形成金属外壳的方法和装置
    • US06523610B1
    • 2003-02-25
    • US10189944
    • 2002-07-03
    • James E. GriffithJiten ChatterjiRicky A. CoxJohn L. Dennis, Jr.
    • James E. GriffithJiten ChatterjiRicky A. CoxJohn L. Dennis, Jr.
    • E21B2902
    • E21B43/10E21B29/02E21B36/04
    • Methods and apparatus for forming metal or metal alloy casings in well bores are provided. A method of the invention comprises the steps of providing and pumping a fluid suspension of a particulate metal or metal alloy into a pipe string within a well bore having a casing forming tool connected thereto. The casing forming tool includes an internal passageway sealingly communicated with the pipe string and with a plurality of radial openings in the tool positioned around the periphery thereof. An internal heater for heating the fluid suspension and melting the particulate metal or metal alloy and an internal rotating impeller for imparting centrifugal force to the fluid suspension are provided in the casing forming tool. Centrifugal force is imparted to the fluid suspension by the rotating impeller whereby the melted particulate metal or metal alloy forms a casing which solidifies on the walls of the well bore.
    • 提供了在井眼中形成金属或金属合金外壳的方法和装置。 本发明的方法包括以下步骤:将颗粒状金属或金属合金的流体悬浮液提供并泵送到具有连接到其上的套管形成工具的井眼内的管柱中。 套管成型工具包括与管柱密封地连通的内部通道,并且工具中的多个径向开口围绕其周边定位。 一种用于加热流体悬浮液并熔化颗粒状金属或金属合金的内部加热器以及用于在流体悬架上施加离心力的内部旋转叶轮设置在套管成形工具中。 通过旋转的叶轮将离心力赋予流体悬浮液,由此熔融的颗粒状金属或金属合金形成在井眼的壁上固化的壳体。