发明名称 A DRILLING RIG AND A METHOD FOR MOVING A DRILLING RIG
摘要 A drilling rig and method for facilitating movement of a drilling rig comprising a base box (18) and a plurality of wheel assemblies (30) characterised in that at least one of said wheel assemblies (30) is connected to said base box (18) on a pivot (19) and is pivots from a first position for facilitating movement of said drilling rig from a first location to a second location, to a second position disabling movement of said drilling rig. Also disclosed is a drilling rig comprising a base box (18), a substructure (51) and a plurality of powered cylinder apparatuses (70), the substructure (51) raisable above the base box (18) using the plurality of powered cylinder apparatuses (70) characterised in that the drilling rig further comprises a plurality of scissors apparatuses (60) for bracing the substructure (51) with respect to the base box (18).
申请公布号 CA2724442(A1) 申请公布日期 2009.11.19
申请号 CA20092724442 申请日期 2009.05.15
申请人 NATIONAL OILWELL VARCO, L.P. 发明人 ANDERSON, TIMOTHY SCOTT;CALLAGHAN, JONATHAN DOUGLAS;KONDUC, KAMERON WAYNE
分类号 E21B7/02;A61P9/00;A61P9/10;A61P25/06;A61P25/08 主分类号 E21B7/02
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