发明名称 Perforating gun carriers and their methods of manufacture
摘要 The subject matter of the present invention relates to perforating gun carriers and their methods of manufacture. In one embodiment of the present invention, high strength, uniform wall thickness carriers are manufactured through use of the electric resistance weld process.
申请公布号 US2003029639(A1) 申请公布日期 2003.02.13
申请号 US20020108406 申请日期 2002.03.28
申请人 PARROTT ROBERT A.;MARKEL DANIEL C. 发明人 PARROTT ROBERT A.;MARKEL DANIEL C.
分类号 B21C1/22;B21C37/08;B21C37/20;E21B43/117;(IPC1-7):F42D3/00;G21J3/02 主分类号 B21C1/22
代理机构 代理人
主权项
地址