Modular well intervention assembly

Abstract

A modular well intervention assembly includes a jack assembly having increased stroke length that can be installed directly over a well or above a BOP assembly. Modular work platforms and a telescoping mast assembly can be installed and secured in place around the jack assembly. Tongs can be suspended from a hydraulically operated “track system”, eliminating the need for a conventional tong pole and spring. Pipe can be manipulated relative to the well intervention assembly using a hydraulically powered pipe handling device.

What is claimed: 
     
         1 . A well intervention assembly comprising:
 a) a jack assembly mounted above a well;   b) at least one modular deck assembly attached to said jack assembly;   c) a mast assembly attached to said jack assembly; and   d) at least one winch mounted to said mast assembly.   
     
     
         2 . The well intervention assembly of  claim 1 , wherein said jack assembly further comprises:
 a) a plurality of plate members oriented substantially parallel to each other; and   b) at least one hydraulic cylinder disposed between said plurality of plate members.   
     
     
         3 . The well intervention assembly of  claim 2 , wherein each of said plurality of plate members has a bore extending through said plate members and said bores are at least partially aligned with each other. 
     
     
         4 . The well intervention assembly of  claim 1 , wherein said mast assembly further comprises:
 a) a first elongate member;   b) a second elongate member telescopically disposed within said first elongate member; and   c) at least one hydraulic cylinder adapted to selectively extend and retract said second elongate member relative to said first elongate member.   
     
     
         5 . The well intervention assembly of  claim 1 , wherein said at least one modular deck assembly comprises:
 a) a structural support frame defining an interior space; and   b) a floor.   
     
     
         6 . A well intervention assembly comprising:
 a) a jack assembly mounted above a well, wherein said jack assembly further comprises:
 i) a plurality of plate members oriented substantially parallel to each other, wherein each of said plate members has a bore extending through said plate member and said bores are at least partially aligned with each other; and 
 ii) at least one hydraulic cylinder disposed between said plurality of plate members; 
   b) at least one modular deck assembly attached to said jack assembly;   c) a telescoping mast assembly attached to said jack assembly;   d) at least one winch mounted to said mast assembly; and   e) a rotary table disposed on said jack assembly.   
     
     
         7 . The well intervention assembly of  claim 6 , wherein said mast assembly further comprises:
 a) a first elongate member;   b) a second elongate member telescopically disposed within said first elongate member; and   c) at least one hydraulic cylinder adapted to selectively extend and retract said second elongate member relative to said first elongate member.   
     
     
         8 . The well intervention assembly of  claim 6 , wherein said at least one modular deck assembly comprises:
 a) a structural support frame; and   b) a floor.   
     
     
         9 . The well intervention assembly of  claim 6 , wherein said at least one modular deck assembly comprises:
 a) a plurality of lower deck assemblies;   b) a mid-deck assembly disposed over said lower deck assemblies; and   c) an upper deck assembly disposed over said mid-deck assembly.   
     
     
         10 . The well intervention assembly of  claim 9 , wherein said upper deck further comprises a v-door. 
     
     
         11 . The well intervention assembly of  claim 10 , further comprising a pipe handling assembly adapted to guide a section pipe suspended from said mast assembly between said v-door and said jack assembly. 
     
     
         12 . The well intervention assembly of  claim 10 , further comprising a tong support assembly adapted to selectively position a tong unit over said rotary table. 
     
     
         13 . The well intervention assembly of  claim 12 , wherein said tong support assembly further comprises:
 a) a telescoping beam member; and   b) a line extending between said telescoping beam member and said tong unit.   
     
     
         14 . A well intervention assembly comprising:
 a) a jack assembly mounted above a well, wherein said jack assembly further comprises:
 i) a lower plate member having a bore extending through said lower plate member; 
 ii) a middle plate member having a bore extending through said middle plate member, wherein said middle plate member is oriented substantially parallel to said lower plate member and the bores or said lower and middle plate members are at least partially aligned; 
 iii) at least one hydraulic cylinder disposed between said lower and middle plate members; 
 iv) an upper plate member having a bore extending through said upper plate member, wherein said upper plate member is oriented substantially parallel to said lower and middle plate members and the bores or said upper, lower and middle plate members are at least partially aligned; 
 v) at least one hydraulic cylinder disposed between said upper and middle plate members; 
   b) at least one modular deck assembly attached to said jack assembly;   c) a telescoping mast assembly attached to said jack assembly comprising:
 i) a first elongate member; 
 ii) a second elongate member telescopically disposed within said first elongate member; and 
 iii) at least one hydraulic cylinder adapted to selectively extend and retract said second elongate member relative to said first elongate member; 
   d) at least one winch mounted to said mast assembly; and   e) a rotary table disposed on said jack assembly.   
     
     
         15 . The well intervention assembly of  claim 14 , wherein said at least one modular deck assembly comprises:
 a) a plurality of lower deck assemblies;   b) a mid-deck assembly disposed over said lower deck assemblies; and   c) an upper deck assembly disposed over said mid-deck assembly.   
     
     
         16 . The well intervention assembly of  claim 15 , wherein said upper deck further comprises a v-door. 
     
     
         17 . The well intervention assembly of  claim 16 , further comprising a pipe handling assembly adapted to guide a section pipe suspended from said mast assembly between said v-door and said jack assembly. 
     
     
         18 . The well intervention assembly of  claim 16 , further comprising a tong support assembly adapted to selectively position a tong unit over said rotary table. 
     
     
         19 . The well intervention assembly of  claim 18 , wherein said tong support assembly further comprises:
 a) a telescoping beam member; and   b) a line extending between said telescoping beam member and said tong unit.