Coiled Tubing Assembly

Abstract

A coiled tubing assembly includes coiled tubing conveyable into a wellbore, a rotational device operatively coupled to the coiled tubing, a rotatable tubing segment operatively coupled to the rotational device, and a bottom hole tool arranged at an end of the rotatable tubing segment opposite the rotational device. The rotational device rotates the rotatable tubing segment relative to the coiled tubing as the coiled tubing, the rotatable tubing segment, and the bottom hole tool are axially displaced along the wellbore.

What is claimed is: 
     
         1 . A coiled tubing assembly, comprising:
 coiled tubing conveyable into a wellbore;   a rotational device operatively coupled to the coiled tubing;   a rotatable tubing segment operatively coupled to the rotational device; and   a bottom hole tool arranged at an end of the rotatable tubing segment opposite the rotational device,   wherein the rotational device rotates the rotatable tubing segment relative to the coiled tubing as the coiled tubing, the rotational tubing segment, and the bottom hole tool are axially displaced along the wellbore.   
     
     
         2 . The coiled tubing assembly of  claim 1 , wherein the bottom hole tool comprises a downhole tool or device selected from the group consisting of a cutting tool, a jetting tool, a jarring device, one or more well screens, a wellbore isolation device, one or more wellbore sensors or gauges, a fishing tool, and any combination thereof. 
     
     
         3 . The coiled tubing assembly of  claim 1 , wherein the bottom hole tool is located in a non-vertical portion of the wellbore. 
     
     
         4 . The coiled tubing assembly of  claim 1 , wherein the rotational device is a mechanism selected from the group consisting of a fluid powered motor, a hydraulic motor, a pneumatic motor, an electric motor, an electromechanical motor, and any combination thereof. 
     
     
         5 . The coiled tubing assembly of  claim 1 , wherein the rotational device comprises a fluid powered motor that operates in response to a fluid circulated through the coiled tubing and the rotational device. 
     
     
         6 . The coiled tubing assembly of  claim 1 , further comprising one or more control lines extending from a surface location to the rotational device to provide at least one of power and communication to the rotational device. 
     
     
         7 . The coiled tubing assembly of  claim 1 , further comprising a swivel coupled to the rotatable tubing segment at a location between the bottom hole tool and the rotational device, wherein the swivel allows the rotatable tubing segment to rotate relative to the bottom hole tool. 
     
     
         8 . The coiled tubing assembly of  claim 7 , wherein the swivel is a one-way swivel that allows rotation of the rotatable tubing segment relative to the bottom hole tool in a first angular direction, but prevents rotation of the rotatable tubing segment relative to the bottom hole tool in a second angular direction opposite the first angular direction. 
     
     
         9 . The coiled tubing assembly of  claim 1 , further comprising a clutch mechanism positioned between the rotational device and the rotatable tubing segment. 
     
     
         10 . The coiled tubing assembly of  claim 1 , wherein the rotational device comprises a first rotational device and the rotatable tubing segment comprises a first rotatable tubing segment, the coiled tubing assembly further comprising:
 a second rotational device coupled to the coiled tubing downhole from the first rotatable tubing segment; and   a second rotatable tubing segment interposing the second rotational device and the bottom hole tool.   
     
     
         11 . The coiled tubing assembly of  claim 10 , further comprising a swivel coupled to the second rotatable tubing segment uphole from the second rotational device, wherein the swivel allows the first rotatable tubing segment to rotate relative to the second rotational device. 
     
     
         12 . The coiled tubing assembly of  claim 11 , wherein the swivel is a first swivel and the coiled tubing assembly further comprises a second swivel coupled to the second rotatable tubing segment at a location between the bottom hole tool and the second rotatable tubing segment, wherein the second swivel allows the second rotatable tubing segment to rotate relative to the bottom hole tool. 
     
     
         13 . The coiled tubing assembly of  claim 12 , wherein the second swivel is a one-way swivel that allows rotation of the second rotatable tubing segment relative to the bottom hole tool in a first angular direction, but prevents rotation of the second rotatable tubing segment relative to the bottom hole tool in a second angular direction opposite the first angular direction. 
     
     
         14 . A method of performing a coiled tubing operation in a wellbore, comprising:
 introducing a coiled tubing assembly into the wellbore, the coiled tubing assembly comprising;
 coiled tubing; 
 a rotational device operatively coupled to the coiled tubing; 
 a rotatable tubing segment operatively coupled to the rotational device; and 
 a bottom hole tool arranged at an end of the rotatable tubing segment opposite the rotational device; 
   powering the rotational device to rotate the rotatable tubing segment; and   simultaneously conveying the coiled tubing assembly axially along the wellbore while rotating the rotatable tubing segment.   
     
     
         15 . The method of  claim 14 , wherein the rotational device comprises a fluid powered motor and the method further comprises:
 circulating a fluid through the coiled tubing to the fluid powered motor; and   operating the fluid powered motor with the fluid circulating through the fluid powered motor.   
     
     
         16 . The method of  claim 15 , wherein the fluid comprises a drilling mud and the bottom hole tool comprises a drill bit, the method further comprising:
 circulating the drilling mud to the drill bit; and   rotating the drill bit and thereby extending a length of the wellbore.   
     
     
         17 . The method of  claim 14 , further comprising allowing the rotatable tubing segment to rotate relative to the bottom hole tool with a swivel coupled to the rotatable tubing segment at a location between the bottom hole tool and the rotational device. 
     
     
         18 . The method of  claim 17 , wherein the swivel is a one-way swivel that allows rotation of the rotatable tubing segment relative to the bottom hole tool in a first angular direction, but prevents rotation of the rotatable tubing segment relative to the bottom hole tool in a second angular direction opposite the first angular direction. 
     
     
         19 . The method of  claim 14 , wherein the coiled tubing assembly further includes a clutch mechanism positioned between the rotational device and the rotatable tubing segment, the method further comprising disengaging the rotational device from rotating the rotatable tubing segment with the clutch mechanism when a predetermined torque limit is reached. 
     
     
         20 . The method of  claim 14 , wherein the rotational device comprises a first rotational device and the rotatable tubing segment comprises a first rotatable tubing segment, the method further comprising:
 rotating a second rotatable tubing segment with a second rotational device coupled to the coiled tubing downhole from the first rotatable tubing segment; and   reducing friction caused by the second rotatable tubing segment engaging the wall of the wellbore as the second rotatable tubing segment rotates.   
     
     
         21 . The method of  claim 20 , further comprising combining rotation of the first and second rotatable tubing segments to rotate the bottom hole tool.