Wellbore cleanout system

Abstract

A system of cleaning a portion of the casing prior to a plugging operation may include a centralizer, a first radially extendable cutting tool, a second radially extendable cutting tool, a preliminary extendable cleaning tool, and a fluid jet cleaning tool. In a preferred embodiment a centralizer, a radially extendable cutting tool, and a fluid jet cleaning tool are run into a wellbore where the radially extendable cutting tool cut the window through the inner production tubular and the fluid jet cleaning tool removes the remaining's cement and other debris allowing a plug to be placed within the window. In another embodiment a centralizer and a first extendable cutting tool may be run into the well where a small window is cut and then the centralizer first extendable cutting tool are removed from the wellbore. A centralizer, a second extendable cutting tool, and a fluid jet cleaning tool a run into the wellbore. The second extendable cutting tool is located adjacent the initial small window and the window is extended. The fluid jet cleaning tool removes the remaining cement and debris.

What is claimed is: 
     
         1 . A wellbore cleanout tool comprising:
 a centralizer;   a cutting tool having an extendable cutter; and   a fluid jetting tool.   
     
     
         2 . The wellbore cleanout tool of  claim 1  wherein, the wellbore cleanout tool is rotated from the surface. 
     
     
         3 . The wellbore cleanout tool of  claim 1  wherein, the wellbore cleanout tool is rotated by a fluid driven downhole motor. 
     
     
         4 . The wellbore cleanout tool of  claim 1  further comprising: a preliminary cutting tool having extendable cutters. 
     
     
         5 . The wellbore cleanout tool of  claim 4  wherein, the preliminary cutting tool is a multi-string cutter. 
     
     
         6 . The wellbore cleanout tool of  claim 1  wherein, the cutting tool having an extendable cutter is a section mill. 
     
     
         7 . The wellbore cleanout tool of  claim 1  wherein, the centralizer is a taper mill. 
     
     
         8 . A method of cleaning a wellbore comprising:
 running a cleanout assembly into a well;
 wherein the cleanout assembly has a centralizer, a cutting tool, and a fluid jetting tool; 
   flowing a fluid through the cleanout assembly;   extending an extendable cutter from the cutting tool;   forming a window within a tubular by rotating and lowering the cutting tool;   actuating the fluid jetting tool; and   pulling out of the well.   
     
     
         9 . The method of cleaning a wellbore of  claim 8  wherein the cutting tool is rotated from the surface. 
     
     
         10 . The method of cleaning a wellbore of  claim 8  wherein the cutting tool is rotated by a fluid driven downhole motor. 
     
     
         11 . The method of cleaning a wellbore of  claim 8  further comprising the preliminary steps:
 running a preliminary cutter into the well; 
 forming a preliminary window within the tubular; and 
 pulling out of the well. 
 
     
     
         12 . A method of cleaning a wellbore comprising:
 running a cleanout assembly into a well;
 wherein the cleanout assembly has a centralizer, a cutting tool, a preliminary cleaning tool, and a fluid jetting tool; 
   flowing a fluid through the cleanout assembly;   extending an extendable cutter from the cutting tool;   extending a scraper from the preliminary cleaning tool;   forming a window within a casing by rotating and lowering the cutting tool;   actuating the fluid jetting tool; and   pulling out of the well.   
     
     
         13 . The method of cleaning a wellbore of  claim 12  wherein the cutting tool is rotated from the surface. 
     
     
         14 . The method of cleaning a wellbore of  claim 12  wherein the cutting tool is rotated by a fluid driven downhole motor. 
     
     
         15 . The method of cleaning a wellbore of  claim 12  further comprising the preliminary steps:
 running a preliminary cutter into the well; 
 forming a preliminary window within the tubular; and 
 pulling out of the well.