Rotating Drilling Tool

Abstract

Embodiments described herein comprise a system and method for controlling directional drilling. The system includes a conveyance for conveying a bottom hole assembly BHA into a wellbore. The BHA may include a bent housing, a drilling tool and a motor for rotating the bent housing in the wellbore. The system further includes a conveyance rotation device for rotating the conveyance in the opposite direction of the bent housing. The direction of the bent housing may be controlled by controlling the rotational speed of the bent housing and the conveyance while drilling.

1 . A drilling tool, comprising:
 a conveyance for delivering a bottom hole assembly into a wellbore;   a conveyance rotation device configured to rotate the conveyance in a first direction;   the bottom hole assembly comprising:
 a drill bit; 
 a bent housing; and 
 a motor configured to rotate the bent housing in a second direction relative to the conveyance; 
   one or more monitor devices configured to monitor the rotational speed of the bent housing; and   a controller configured to control the relative rotational speed in the first direction and the second direction and thereby control the rotational direction of the bent housing during drilling.   
     
     
         2 . The drilling tool of  claim 1 , wherein the one or more monitoring devices further comprises a bent housing rotation indicator. 
     
     
         3 . The drilling tool of  claim 2 , wherein the bent housing rotation indicator further comprises a plurality of upsets coupled to a portion of the mandrel and a sensor configured to detect each of the upsets as the upset rotates past the sensor. 
     
     
         4 . The drilling tool of  claim 1 , wherein the one or more monitoring devices further comprises a measurement while drilling tool. 
     
     
         5 . The drilling tool of  claim 1 , wherein the one or more monitoring devices further comprises a conveyance indicator. 
     
     
         6 . The drilling tool of  claim 5 , wherein the conveyance indicator is a measurement while drilling tool located proximate the bottom hole assembly. 
     
     
         7 . The drilling tool of  claim 1 , wherein the conveyance is a drill string. 
     
     
         8 . The drilling tool of  claim 1 , wherein the conveyance rotation device is a top drive. 
     
     
         9 . A method of forming a wellbore, comprising:
 selecting a desired drill path;   drilling the wellbore with a bottom hole assembly (BHA) coupled to a conveyance, the bottom hole assembly comprising:
 a drill bit; 
 a bent housing; 
 a motor; 
   rotating the conveyance in a first direction;   rotating the bent housing in a second direction opposite to the first direction;   determining the rotational position of the bent housing in the wellbore using one or more monitors proximate the BHA;   adjusting the rotational position of the bent housing; and   drilling along the desired drill path.   
     
     
         10 . The method of  claim 9 , wherein determining the rotational position of the bent housing further comprises monitoring the rotational speed of the conveyance proximate the BHA. 
     
     
         11 . The method of  claim 10 , wherein determining the rotational position of the bent housing further comprises monitoring the rotational speed of the bent housing. 
     
     
         12 . The method of  claim 10 , further comprising comparing the rotational speed of the bent housing with the conveyance. 
     
     
         13 . The method of  claim 9 , wherein adjusting the rotational position of the bent housing further comprising changing the rotational speed of the conveyance. 
     
     
         14 . The method of  claim 9 , wherein adjusting the rotational position of the bent housing further comprising changing the rotational speed of the bent housing. 
     
     
         15 . The method of  claim 9 , wherein adjusting the rotational position of the bent housing further comprising changing the weight on the drill bit. 
     
     
         16 . A method of controlling the rotational direction of a bottom hole assembly (BHA), comprising:
 delivering the BHA into a wellbore on a conveyance wherein the BHA comprises
 a bent housing and a downhole tool; 
   rotating the conveyance in a first direction;   monitoring the rotational speed of the conveyance;   rotating the bent housing in a second direction;   monitoring the rotational speed of bent housing; and   controlling the relative rotational speed in the first and second direction and thereby controlling the rotational position of the bent housing and downhole tool.   
     
     
         17 . The method of  claim 16 , wherein monitoring the rotational speed of the bent housing further comprising sending a signal from a bent housing rotation indicator in the BHA to a controller. 
     
     
         18 . The method of  claim 16 , wherein monitoring the rotational speed of the bent conveyance further comprising sending a signal from a monitoring device proximate the BHA. 
     
     
         19 . The method of  claim 16 , further comprising comparing the rotational speed in the first direction and the second direction in a rotating drilling controller. 
     
     
         20 . The method of  claim 16 , further comprising determining a global rotational position of the bent housing in the wellbore.