发明名称 Mobile drilling rig
摘要 An embodied mobile drilling rig is made of three sections, two substructures and a mast section, which are easily transported and installed at a drilling site. Each substructure includes a mast starting section; a floor side box connected to the mast starting section; a subbase side box; elevating legs connected to the floor side box and the subbase side box; and a raising cylinder. The mast section connects to the mast starting sections. The raising cylinders engage the mast in order to raise the mast into a vertical orientation and then raise the floor side boxes into an operating position. The embodied mobile drilling rigs are configurable to be transported by road with as little as three major loads, all within legal or permitable load and dimensional limits for most regions.
申请公布号 US7308953(B2) 申请公布日期 2007.12.18
申请号 US20050069787 申请日期 2005.03.01
申请人 BARNES R MICHAEL 发明人 BARNES R. MICHAEL
分类号 E21B15/00;E04H12/34;E21B3/02;E21B7/20 主分类号 E21B15/00
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