发明名称 PORTABLE DRILLING RIG APPARATUS AND ASSEMBLY METHOD
摘要 A portable drilling rig apparatus includes a rig floor having a pedestal structure thereon, the pedestal structure comprising a lower pivot point and a lower attachment point and wherein the pedestal structure is configured to be rotated to a vertical position about the lower pivot point. The drilling rig further includes a mast structure having a mast pivot point at a lower end of the mast structure wherein the mast pivot point is configured to be pinned to an upper pivot point of the pedestal structure.
申请公布号 US2013318909(A1) 申请公布日期 2013.12.05
申请号 US201313899293 申请日期 2013.05.21
申请人 WASTERVAL PHILIP;INTERNATIONAL DRILLING EQUIPMENT COMPANY, LLC 发明人 WASTERVAL PHILIP
分类号 E21B7/02 主分类号 E21B7/02
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