发明名称 Oil well bailer apparatus
摘要 An oil well bailer apparatus for use in bailing oil from an oil well. It includes a housing adapted for mounting over the top of the wellhead and a bail bucket which is arranged for lowering and raising between the well and the housing for raising oil to the housing and depositing it at the wellhead surface.
申请公布号 US4368909(A) 申请公布日期 1983.01.18
申请号 US19810249103 申请日期 1981.03.30
申请人 CHROMALLOY AMERICAN CORPORATION 发明人 ALEXANDER, JR., GRANISON T.
分类号 E21B27/00;F04B19/08;F04B47/12;(IPC1-7):F04B17/00 主分类号 E21B27/00
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