Downhole Running Tool and Method

Abstract

A single or multi-bowl wellhead may be positioned in a diverter housing over the wellbore. An overshot running tool protects the wellhead during placement and certain operations. Protrusions on the wellhead may be installed after the diverter housing is removed.

1 . A running tool for positioning a wellhead, comprising:
 a cylindrical body having a bottom, a first thickness, an inside diameter, and an exterior surface;   a cylindrical collar having a length, an inside diameter, and an interior surface; and   wherein said collar inside diameter is attached to and extends around a portion of said body exterior surface.   
     
     
         2 . The running tool of  claim 1 , wherein said collar comprises a thread on said collar interior surface. 
     
     
         3 . The running tool of  claim 1 , wherein said collar comprises a seal for sealing said collar interior surface. 
     
     
         4 . The running tool of  claim 1 , wherein said body having a second thickness different than said body first thickness. 
     
     
         5 . The running tool of  claim 1 , further comprising:
 a cylindrical extension having a top and an inside diameter,   wherein said extension is coupled with said body.   
     
     
         6 . The running tool of  claim 5 , wherein said extension top is threadably coupled with said body bottom. 
     
     
         7 . The running tool of  claim 6 , wherein said extension inside diameter is substantially the same as said body inside diameter. 
     
     
         8 . The running tool of  claim 5 , wherein said collar comprises a thread on said collar interior surface. 
     
     
         9 . A method of use of a running tool used with a wellbore, comprising the steps of:
 coupling a running tool tubular with a running tool, wherein said running tool having an interior surface comprising a thread;   coupling a wellhead tubular with a wellhead, wherein said wellhead has an exterior surface comprising a thread;   coupling said wellhead exterior surface thread with said running tool interior surface thread;   moving said wellhead into a housing positioned with the wellbore; and   positioning said wellhead with the wellbore.   
     
     
         10 . The method of  claim 9 , wherein said wellhead has a longitudinal bore with an interior surface and said running tool has a longitudinal bore, and further comprising the step of moving a fluid through said wellhead longitudinal bore and said running tool longitudinal bore without the fluid communicating with portions of said wellhead longitudinal bore interior surface. 
     
     
         11 . The method of  claim 9 , wherein said wellhead having a top with an annular groove, and further comprising the step of covering the annular groove with the running tool. 
     
     
         12 . The method of  claim 9 , wherein said housing is a diverter housing. 
     
     
         13 . A running tool for positioning a casing head, comprising:
 a cylindrical body having a first thickness and an exterior surface;   a cylindrical collar having a length, an inside diameter, and an interior surface; and   wherein said collar inside diameter is attached to and extends around a portion of said body exterior surface.   
     
     
         14 . The running tool of  claim 13 , wherein said collar comprises a thread on said collar interior surface. 
     
     
         15 . The running tool of  claim 13 , wherein said collar comprises a seal for sealing said collar interior surface. 
     
     
         16 . The running tool of  claim 13 , wherein said body having a second thickness different than said body first thickness. 
     
     
         17 . The running tool of  claim 13 , further comprising:
 a cylindrical extension having a top and an inside diameter,   wherein said extension is coupled with said body.   
     
     
         18 . A method of use of a running tool used with a wellbore, comprising the steps of:
 coupling a running tool tubular with a running tool, wherein said running tool having an interior surface comprising a thread;   coupling a wellhead tubular with a casing head, wherein said casing head has an exterior surface comprising a thread;   coupling said casing head exterior surface thread with said running tool interior surface thread;   moving said casing head into a diverter housing positioned with the wellbore; and   positioning said casing head with the wellbore.   
     
     
         19 . The method of  claim 18 , wherein said casing head has a longitudinal bore with an interior surface and said running tool has a longitudinal bore, and further comprising the step of moving a fluid through said casing head longitudinal bore and said running tool longitudinal bore without the fluid communicating with portions of said casing head longitudinal bore interior surface. 
     
     
         20 . The method of  claim 18 , wherein said casing head having a top with an annular groove, and further comprising the step of covering the annular groove with the running tool.