发明名称 Ball dropping tool method and apparatus
摘要 One embodiment includes a method and apparatus for an improved ball dropper. In one embodiment the method and apparatus can be used to drop various objects into the well bore from the rig. In one embodiment, when the well is pressurized the tool can be loaded with one or more items to be dropped.
申请公布号 US7281589(B2) 申请公布日期 2007.10.16
申请号 US20060460520 申请日期 2006.07.27
申请人 MAKO RENTALS, INC. 发明人 ROBICHAUX KIP M.;LEGLEUX MICHAEL
分类号 E21B33/03;E21B23/00 主分类号 E21B33/03
代理机构 代理人
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