Coiled tubing/top drive rig and method

Abstract

The rig for selectively inserting coiled tubing or a threaded tubular through a rig floor 13 and into a well includes a mast 15 extending upward from the rig floor and movable between a threaded tubular position and a coiled tubing position. A top drive 21 is movable along an axis of the mast to insert the threaded tubular in the well when a top drive axis 42 is substantially aligned with the axis 44 of the well. Injector 17 supported on the mast inserts coiled tubing into the well, with the injector having an axis 46 offset from the top drive axis and substantially aligned with the axis of the well when the mast is in the coiled tubing position. A powered drive 54 is provided for selectively moving the mast between the threaded tubular position and the coiled tubing position.

1 - 35 . (canceled) 
   
   
       36 . A rig for selectively inserting coiled tubing or a threaded tubular through a rig floor and into a well, the rig comprising:
 a mast extending upward from the rig base;   a top drive movable along an axis of the mast to insert the threaded tubular in the well, the top drive having a top drive axis substantially aligned with an axis of the well when the mast is in a threaded tubular position wherein the top drive is operative;   an injector supported on the mast to insert the coiled tubing into the well, the injector having an injector axis offset from the top drive axis when the mast is in a coiled tubing position wherein the top drive is operative;   a connector for removably connecting the mast and the injector;   a powered drive for selectively raising the mast and the injector supported on the mast; and   a guide rail for guiding lateral movement of the mast with respect to the rig floor between the threaded tubular position and the coiled tubing position.   
   
   
       37 . The rig as defined in  claim 36 , further comprising:
 one or more fluid powered cylinders for moving the mast laterally between the threaded tubular position and the coiled tubing position.   
   
   
       38 . The rig as defined in  claim 36 , further comprising:
 a lubricator having an upper end secured to the injector, the lubricator having a central axis offset from the axis of the well to pass coiled tubing into the well when the mast is in the coiled tubing position.   
   
   
       39 . The rig as defined in  claim 38 , wherein the lubricator and the injector are raised together with the mast. 
   
   
       40 . The rig as defined in  claim 36 , further comprising:
 a drawworks supported on the rig base for moving the top drive along the axis of the mast.   
   
   
       41 . A rig for selectively inserting coiled tubing or a threaded tubular through a rig floor and into a well, the rig comprising:
 a mast extending upward from the rig base;   a top drive movable along an axis of the mast to insert the threaded tubular in the well, the top drive having a top drive axis substantially aligned with an axis of a rig table when the mast is in a threaded tubular position wherein the top drive is operative;   an injector supported on the mast to insert the coiled tubing into the well, the injector having an injector axis offset from the top drive axis when the mast is in the coiled tubing position wherein the top drive is operative;   a connector for removably connecting the mast and the injector; and   the injector and a coiled tubing reel being supported on a trailer separate from the rig base during transportation;   a powered lift for raising the injector upward relative to the trailer for connection with the mast; and   a powered drive for selectively raising the mast and the injector supported on the mast.   
   
   
       42 . The rig as defined in  claim 41 , further comprising:
 a drawworks supported on the rig base for moving the top drive along the axis of the mast.   
   
   
       43 . The rig as defined in  claim 41 , further comprising:
 at least part of the connector for removably connecting the mast and the injector being interconnected with the mast before connection to the injector; and   an adjustment mechanism for adjusting the position of the connector relative to the mast for interconnecting the connector and the injector.   
   
   
       44 . The rig as defined in  claim 41 , further comprising:
 an adjustment mechanism for varying the position of the injector relative to the trailer to align the injector with the connector for connection to the mast.   
   
   
       45 . The rig as defined in  claim 41 , wherein the mast is pivotable relative to the rig floor by the powered drive between the threaded tubular position and the coiled tubing position. 
   
   
       46 . The rig as defined in  claim 41 , further comprising:
 a guide rail for guiding lateral movement of the mast with respect to the rig floor between the threaded tubular position and the coiled tubing position; and   one or more fluid powered cylinders for moving the mast laterally between the threaded tubular position and the coiled tubing position.   
   
   
       47 . A rig for selectively inserting coiled tubing or a threaded tubular through a rig floor and into a well, the rig comprising:
 a mast extending upward from the rig base and movable between a threaded tubular position and a coiled tubing position;   a top drive movable along an axis of the mast to insert the threaded tubular in the well, the top drive having a top drive axis substantially aligned with an axis of the well when the mast is in the threaded tubular position;   an injector supported on the mast to insert the coiled tubing into the well, the injector having an injector axis offset from the top drive axis and substantially aligned with the axis of the well when the mast is in the coiled tubing position;   the injector and a coiled tubing reel being supported on a trailer separate from the rig base during transportation;   a connector for removably connecting the mast and the injector;   a fluid powered cylinder for moving the injector relative to the mast and connecting the mast and the injector; and   a drawworks for moving the top drive along the axis of the mast.   
   
   
       48 . The rig as defined in  claim 47 , further comprising:
 a powered lift for raising the injector upward relative to the trailer for connection with the mast.   
   
   
       49 . A rig as defined in  claim 47 , further comprising:
 a powered drive for selectively raising the mast and the injector supported on the mast.   
   
   
       50 . A method of selectively inserting coiled tubing or a threaded tubular through a rig floor and into a well, the method comprising:
 providing a mast extending upward from the rig base;   moving a top drive along an axis of the mast to insert the threaded tubular in the well, the top drive having a top drive axis substantially aligned with an axis of the well when the mast is in a threaded tubular position;   supporting an injector on the mast to insert the coiled tubing into the well, the injector having an injector axis offset from the top drive axis and substantially aligned with the axis of the well when the mast is in a coiled tubing position;   removably connecting the mast and the injector;   powering a drive unit to raise the mast and the injector supported on the mast; and   selectively moving the mast between the threaded tubular position and the coiled tubing position.   
   
   
       51 . The method as defined in  claim 50 , further comprising:
 moving the top drive along the axis of the mast with a drawworks.   
   
   
       52 . The method as defined in  claim 50 , further comprising:
 guiding lateral movement of the mast with respect to the rig floor between the threaded tubular position and the coiled tubing position; and   moving the mast laterally between the threaded tubular position and the coiled tubing position.   
   
   
       53 . A rig for inserting coiled tubing through a rig floor and into a well, the rig comprising:
 a mast extending upward from the rig floor and movable between a threaded tubular position and a coiled tubing position;   an injector supported on the mast to insert the coiled tubing into the well, the injector having an injector axis offset from the mast; and   a powered drive for selectively moving the mast, the mast with a rig table moving between the threaded tubular position and a coiled tubing position.   
   
   
       54 . A rig as defined in  claim 53 , further comprising:
 a guide rail for guiding lateral movement of the mast with respect to the rig floor.   
   
   
       55 . A rig as defined in  claim 53 , further comprising:
 a slide member for guiding vertical movement of the injector relative to the rig floor; and   a drive member for selectively moving the coiled tubing injector vertically along the slide member.   
   
   
       56 . A method of inserting coiled tubing through a rig floor and into a well, the method comprising:
 providing a mast extending upward from the rig floor and movable between a threaded tubular position and a coiled tubing position;   supporting an injector on the mast to insert the coiled tubing into the well, the injector having an injector axis offset from the mast when the mast is in the coiled tubing position;   selectively moving the mast between the threaded tubular position and the coiled tubing position; and   moving a rig table and the mast between the threaded tubular position and a coiled tubing position.   
   
   
       57 . A method as defined in  claim 56 , further comprising:
 providing a coiled tubing guide above the injector for guiding the coiled tubing from a reel into the injector; and   providing a lubricator extending downward from the injector for sealing an annulus about the coiled tubing.   
   
   
       58 . A method as defined in  claim 56 , further comprising:
 guiding movement of the mast laterally with respect to the rig floor between the threaded tubular position and the coiled tubing position.   
   
   
       59 . A method as defined in  claim 56 , further comprising:
 rigidly securing the injector to the mast by a support bracket when in the threaded tubular position or the coiled tubing position.