Rigless casing cutting/pulling stand

Abstract

A tool for removing a portion of a casing from a wellbore. The tool includes a base having an opening or bore formed therethrough. A plurality of hydraulic cylinders may each have a first end portion coupled to the base and a second end portion distal the base. A first crane may be coupled to the base. A tong may be coupled to the first crane, and the first crane may be adapted to move the tong into alignment with the opening in the base. A second crane may be coupled to the base. An attachment may be coupled to the second crane, and the second crane may be adapted to move the attachment into alignment with the opening in the base and proximate the second end portions of the cylinders.

What is claimed is: 
     
         1 . A tool for removing a portion of a casing from a wellbore, comprising:
 a base having an opening formed therethrough;   a plurality of hydraulic cylinders having first end portions coupled to the base and second end portions distal the base;   a first crane coupled to the base;   a tong coupled to the first crane, wherein the first crane is adapted to move the tong into alignment with the opening in the base;   a second crane coupled to the base; and   an attachment coupled to the second crane, wherein the second crane is adapted to move the attachment into alignment with the opening in the base and proximate the second end portions of the plurality of hydraulic cylinders.   
     
     
         2 . The tool of  claim 1 , wherein the first crane is a jib crane, and wherein the second crane is a knuckleboom crane. 
     
     
         3 . The tool of  claim 1 , wherein the attachment is coupled to the second end portions of the plurality of hydraulic cylinders. 
     
     
         4 . The tool of  claim 3 , wherein the plurality of hydraulic cylinders are adapted to extend upward, thereby lifting the attachment. 
     
     
         5 . The tool of  claim 1 , wherein the tong is adapted to screw two or more sections of drill pipe together or to unscrew the two or more sections of drill pipe from one another. 
     
     
         6 . The tool of  claim 5 , wherein the attachment comprises a swivel head attachment for rotating the drill pipe. 
     
     
         7 . The tool of  claim 6 , wherein the swivel head attachment is adapted to introduce a fluid to the drill pipe. 
     
     
         8 . The tool of  claim 5 , wherein the attachment comprises a casing jack attachment. 
     
     
         9 . The tool of  claim 8 , wherein the casing jack attachment is adapted to lift the drill pipe. 
     
     
         10 . A method for removing a portion of a casing from a wellbore, comprising:
 moving a tong into alignment with an opening formed through a base of a tool using a first crane coupled to the base, wherein the tool comprises a plurality of hydraulic cylinders having first end portions coupled to the base and second end portions distal the base;   screwing two or more segments of a drill pipe together with the tong;   introducing the drill pipe into a wellbore disposed below the base and aligned with the opening, wherein a casing is disposed in the wellbore and disposed radially outward from the drill pipe; and   moving a first attachment into a first position aligned with the opening in the base and proximate the second end portions of the cylinders using a second crane coupled to the base, the first attachment coupling to the drill pipe.   
     
     
         11 . The method of  claim 10 , further comprising:
 introducing a plug into the wellbore; and   expanding the plug radially outward and into contact with an inner surface of the casing.   
     
     
         12 . The method of  claim 10 , wherein the drill pipe comprises one or more knives coupled thereto, and further comprising introducing a fluid into the drill pipe with the first attachment to cause the one or more knives to move radially outward and into contact with the casing. 
     
     
         13 . The method of  claim 12 , further comprising rotating the drill pipe via the first attachment to cut the casing into first and second segments with the knives. 
     
     
         14 . The method of  claim 13 , further comprising:
 moving the first attachment into a second position with the second crane, wherein the first attachment when in the second position is not aligned with the opening in the base and is not coupled to the drill pipe; and   moving a second attachment into the first position with the second crane, the second attachment coupling with the drill pipe when in the first position.   
     
     
         15 . The method of  claim 14 , further comprising:
 coupling the drill pipe to the first segment of the casing; and   extending the cylinders upward, thereby lifting the second attachment, the drill pipe, and the first segment of the casing.   
     
     
         16 . The method of  claim 15 , wherein a spear couples the drill pipe to the first segment of the casing. 
     
     
         17 . A method for removing a portion of a casing from a wellbore, comprising:
 moving a tong into alignment with an opening formed through a base of a tool using a first crane coupled to the base, wherein the tool comprises a plurality of hydraulic cylinders having first end portions coupled to the base and second end portions distal the base;   screwing two or more segments of a drill pipe together with the tong;   introducing the drill pipe into a wellbore disposed below the base and aligned with the opening, wherein a casing is disposed in the wellbore and disposed radially outward from the drill pipe;   moving a first attachment into a first position aligned with the opening in the base and proximate the second end portions of the cylinders using a second crane coupled to the base, the first attachment coupling to the drill pipe;   rotating the drill pipe via the first attachment to cut the casing into first and second segments with one or more knives coupled to the drill pipe;   moving the first attachment into a second position with the second crane, wherein the first attachment when in the second position is not aligned with the opening in the base and is not coupled to the drill pipe;   moving a second attachment into the first position with the second crane, the second attachment coupling with the drill pipe when in the first position;   coupling the drill pipe to the first segment of the casing; and   lifting the drill pipe and the first segment of the casing using the second attachment.   
     
     
         18 . The method of  claim 17 , further comprising:
 decoupling the one or more knives from the drill pipe; and   coupling one or more spears to the drill pipe.   
     
     
         19 . The method of  claim 18 , further comprising engaging the one or more spears with the first segment of the casing to couple the first segment of the casing to the drill pipe. 
     
     
         20 . The method of  claim 19 , further comprising removing the drill pipe and the first segment of the casing from the wellbore.