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RIG SUBSTRUCTURE AND METHOD OF MOVING THE SAME

  • US 3,739,853 A
  • Filed: 06/04/1971
  • Issued: 06/19/1973
  • Est. Priority Date: 06/04/1971
  • Status: Expired due to Term
First Claim
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1. A rig substructure comprising a floor having means intermediate the confines thereof defining a path of vertical tool movement into a bore hole;

  • means for supporting the floor above an underlying surface and defining a path of travel for a Christmas tree from the path of movement to the periphery of the substructure, the support means including spaced rows of generally vertical columns on opposite sides of the path of travel and generally horizontal beam means rigid with the column rows above the path of travel; and

    pad means rigidly connected with the support means providing bearing contact with the underlying surface across and blocking the path of travel including means for unfastening the pad means from rigid connection with the support means for movement relative thereto for unblocking the path of travel.

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