Downhole tool and method of use

Abstract

A downhole tool having a mandrel made of composite material, the mandrel having a proximate end with a first outer diameter, and a distal end having a first set of threads and a second outer diameter. There is a flowbore extending from the proximate end to the distal end, as well as a sealing element configured with an inner annular groove.

What is claimed is: 
     
         1 . A downhole tool for use in a wellbore, the downhole tool comprising:
 a mandrel made of composite material, the mandrel further comprising:
 a proximate end having a first outer diameter; 
 a distal end comprising a first set of threads and a second outer diameter; 
 an angled outer linear transition surface therebetween; and 
 an inner flowbore extending from the proximate end to the distal end, 
 wherein the first outer diameter is larger than the second outer diameter; 
   a bearing plate disposed around the mandrel, the bearing plate comprising an angled inner plate surface configured for engagement with the angled outer linear transition surface;   a first slip disposed around the mandrel;   a first cone disposed around the mandrel, and proximate the first slip;   a second slip disposed around the mandrel;   a second cone disposed around the mandrel, and proximate the second slip;   a seal element disposed around the mandrel, and between the first cone and the second cone, the seal element further comprising:
 an inner circumferential groove; and 
 a seal element outer surface configured with an at least one angled surface; 
   a lower sleeve disposed around the mandrel at the distal end, and threadingly engaged with the first set of threads, the lower sleeve further comprising a lateral hole with an at least one anchor pin disposed therein, the at least one anchor pin being proximately engaged with the distal end.   
     
     
         2 . The downhole tool of  claim 1 , wherein a depth of the inner circumferential groove is about 0.25 inches. 
     
     
         3 . The downhole tool of  claim 1 , wherein at least one of the first slip and the second slip are made of composite material. 
     
     
         4 . The downhole tool of  claim 3 , wherein at least one of the first slip and the second slip comprise a band therearound, the band configured to maintain position of the respective slip. 
     
     
         5 . The downhole tool of  claim 3 , the downhole tool further comprising a deformable member configured to be responsive to a pump down fluid. 
     
     
         6 . The downhole tool of  claim 3 , wherein each of the first slip and the second slip comprise a one-piece configuration, and wherein the lower sleeve is configured with sleeve threads that are coupled with the first set of threads. 
     
     
         7 . The downhole tool of  claim 1 , wherein the lower sleeve is configured to maintain break symmetry of the first slip, and wherein the bearing plate is proximate the second slip. 
     
     
         8 . The downhole tool of  claim 1 , wherein the lower sleeve is configured with an at least one outer tapered surface. 
     
     
         9 . A downhole tool for use in a wellbore, the downhole tool comprising:
 a mandrel made of composite material, the mandrel further comprising:
 a proximate end having a first outer diameter; 
 a distal end comprising a first set of threads and a second outer diameter; 
 an angled outer linear transition surface therebetween; and 
 an inner flowbore extending from the proximate end to the distal end, 
 wherein the first outer diameter is larger than the second outer diameter; 
   a bearing plate disposed around the mandrel, the bearing plate comprising an inner plate surface configured for engagement with the angled outer linear transition surface;   a first slip disposed around the mandrel;   a second slip disposed around the mandrel;   a seal element disposed around the mandrel, and between the first slip and the second slip, the seal element further comprising:
 an inner circumferential groove; and 
 a seal element outer surface configured with an at least one angled surface; 
   a lower sleeve disposed around the mandrel at the distal end, and threadingly engaged with the first set of threads.   
     
     
         10 . The downhole tool of  claim 9 , the downhole tool further comprising: a first cone proximate the first slip; and a second cone proximate the second slip, 
       wherein the lower sleeve is configured with a lateral hole with an at least one anchor pin disposed therein, the at least one anchor pin being proximately engaged with the distal end. 
     
     
         11 . The downhole tool of  claim 10 , wherein a depth of the inner circumferential groove is about 0.25 inches. 
     
     
         12 . The downhole tool of  claim 11 , wherein at least one of the first slip and the second slip are made of composite material. 
     
     
         13 . The downhole tool of  claim 12 , wherein at least one of the first slip and the second slip comprise a band therearound, the band configured to maintain position of the respective slip. 
     
     
         14 . The downhole tool of  claim 13 , the downhole tool further comprising a deformable member configured to be responsive to a pump down fluid. 
     
     
         15 . The downhole tool of  claim 13 , wherein each of the first slip and the second slip comprise a one-piece configuration. 
     
     
         16 . The downhole tool of  claim 13 , wherein the lower sleeve is configured to maintain break symmetry of the first slip, and wherein the bearing plate is proximate the second slip. 
     
     
         17 . The downhole tool of  claim 13 , wherein the lower sleeve is configured with an at least one outer tapered surface. 
     
     
         18 . A downhole tool for use in a wellbore, the downhole tool comprising:
 a mandrel made of composite material, the mandrel further comprising:
 a proximate end having a first outer diameter; 
 a distal end comprising a first set of threads and a second outer diameter; 
 an angled outer linear transition surface therebetween; and 
 an inner flowbore extending from the proximate end to the distal end, 
 wherein the first outer diameter is larger than the second outer diameter; 
   a bearing plate disposed around the mandrel, the bearing plate comprising an angled inner plate surface configured for engagement with the angled outer linear transition surface;   a first slip disposed around the mandrel;   a first cone disposed around the mandrel, and proximate the first slip;   a second slip disposed around the mandrel;   a second cone disposed around the mandrel, and proximate the second slip;   a seal element disposed around the mandrel, and between the first cone and the second cone, the seal element further comprising:
 an inner circumferential groove; and 
 a seal element outer surface configured with an at least one angled surface; 
   a lower sleeve disposed around the mandrel at the distal end, and threadingly engaged with the first set of threads, the lower sleeve further comprising a lateral hole with an at least one anchor pin disposed therein   wherein at least one of the first slip and the second slip are made of composite material.   
     
     
         19 . The downhole tool of  claim 18 , wherein each of the first slip and the second slip comprise a band therearound, the band configured to maintain position of the respective slip. 
     
     
         20 . The downhole tool of  claim 19 , wherein the lower sleeve is configured with an at least one outer tapered surface.