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Method and apparatus for working multiple wellheads in close proximity

  • US 9,382,766 B2
  • Filed: 06/21/2012
  • Issued: 07/05/2016
  • Est. Priority Date: 06/21/2012
  • Status: Active Grant
First Claim
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1. A rig system for use with multiple wellheads in close proximity on a wellsite, said multiple wellheads comprising at least a first wellhead and a second wellhead, said rig system comprising:

  • a rig carrier;

    a mast assembly carried by said rig carrier, said mast assembly being movable between a first lowered position with respect to said rig carrier and a second upright position with respect to said rig carrier;

    a top drive mounted so as to be moveable along an axial path in said mast assembly, said rig carrier being moveable to a position so that said axial path of said top drive is at least substantially aligned with said first wellhead;

    a skid;

    a pipe moving member mounted to said skid, said pipe moving member operable for moving pipe to said mast assembly and away from said mast assembly, wherein said skid and said rig carrier are configurable to allow access to said first wellhead when said second wellhead is within a 10 foot radius or greater with respect to said first wellhead, wherein said pipe moving member further comprises a pipe receptacle and clamps to hold pipe in said pipe receptacle, said pipe moving member remotely operable from a control system;

    a pipe tub for storing pipe;

    a pipe transfer system operable for moving pipe from said pipe tub to said pipe moving member and for moving pipe from said pipe moving member to said pipe tub; and

    said control system for calibrating and coordinating movement of at least said pipe moving member, said pipe transfer system and said mast assembly.

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