Downhole tool and method of use

Abstract

A downhole tool suitable for use in a wellbore, the tool having a mandrel configured with a mandrel end having a failure point defined by an inner groove and a failure point wall thickness. The downhole tool also has a first slip disposed about the mandrel; a second slip disposed about the mandrel; and a lower sleeve disposed about the mandrel proximate to the second slip. The lower sleeve is engaged with the mandrel.

What is claimed is: 
     
         1 . A downhole tool for use in a wellbore, the downhole tool comprising:
 a mandrel comprising:
 a distal end having a first outer diameter; a proximate end having a second outer diameter; an inner flowbore; a ball seat formed in the inner flowbore; and an outer surface, 
 wherein the second outer diameter is larger than the first outer diameter; 
   a seal element disposed about the mandrel;   a first slip disposed about the mandrel;   a second slip disposed about the mandrel; and   a lower sleeve disposed proximate to the second slip, and engaged with the mandrel, wherein the proximate end further comprises a failure point defined by an inner groove and a failure point wall thickness between an inner surface of the groove and the outer surface in a thickness range of 0.03 inches to 0.1 inches.   
     
     
         2 . The downhole tool of  claim 1 , wherein the outer surface of the distal end comprises a set of threads, wherein the inner flowbore further comprises an inner flowbore diameter in a range of 3 inches to 4 inches, and wherein an at least a portion of the mandrel other than the failure point comprises a mandrel wall thickness in a thickness range of 0.3 inches to 0.7 inches. 
     
     
         3 . The downhole tool of  claim 1 , wherein a lower end of the ball seat being at least in a distance range of 3 inches to 5 inches in longitudinal depth from the failure point. 
     
     
         4 . The downhole tool of  claim 1 , wherein an at least one or more components of the downhole tool is made of a cured reactive material formed from an initial mixture composition comprising: an epoxy resin and an anhydride curing agent. 
     
     
         5 . The downhole tool of  claim 1 , the downhole tool further comprising:
 a bearing plate disposed around the mandrel, the bearing plate comprising an angled inner plate surface configured for engagement with the angled linear transition surface;   a first cone proximate to the first slip; and   a second cone proximate to the second slip.   
     
     
         6 . The downhole tool of  claim 1 , wherein each of the first slip and the second slip comprise a respective slip body configured with a set of mating holes, wherein the lower sleeve comprises a set of pin inserts configured to engage the set of mating holes for the first metal slip, and wherein a bearing plate comprises a set of bearing plate pin inserts configured to engage the set of mating holes for the second slip. 
     
     
         7 . The downhole tool of  claim 1 , wherein each of the first slip and the second slip comprise an outer surface Rockwell hardness in the range of about 40 to about 60, and an inner surface Rockwell hardness in the range of about 10 to about 25. 
     
     
         8 . The downhole tool of  claim 1 , wherein the mandrel further comprises:
 a first set of threads disposed on an inner bore surface of the inner flowbore; and   a second set of threads for coupling to the lower sleeve, the second set disposed on the outer surface.   
     
     
         9 . A downhole tool for use in a wellbore, the downhole tool comprising:
 a mandrel comprising:
 a distal end; a proximate end; an inner flowbore; a ball seat formed in the inner flowbore; and an outer surface, 
   a seal element disposed about the mandrel;   a first slip disposed about the mandrel;   a second slip disposed about the mandrel; and   a lower sleeve disposed proximate to the second slip, and engaged with the mandrel,   wherein the outer surface of the distal end comprises a set of threads, and wherein the inner flowbore further comprises an inner flowbore diameter in a range of 3 inches to 4 inches.   
     
     
         10 . The downhole tool of  claim 9 , wherein the proximate end further comprises a failure point defined by an inner groove and a failure point wall thickness between an inner surface of the inner groove and the outer surface in a thickness range of 0.03 inches to 0.1 inches. 
     
     
         11 . The downhole tool of  claim 10 , wherein an at least a portion of the mandrel other than the failure point comprises a mandrel wall thickness in the range of about 0.3 inches to about 0.7 inches. 
     
     
         12 . The downhole tool of  claim 11 , wherein a lower end of the ball seat being at least in a distance range of 3 inches to 5 inches in longitudinal depth from the failure point. 
     
     
         13 . The downhole tool of  claim 12 , wherein at least one or more components of the downhole tool is made of a cured reactive material formed from an initial mixture composition comprising: an epoxy resin and an anhydride curing agent. 
     
     
         14 . The downhole tool of  claim 10 , wherein a lower end of the ball seat being at least in a distance range of 3 inches to 5 inches in longitudinal depth from the failure point. 
     
     
         15 . The downhole tool of  claim 14 , the downhole tool further comprising:
 a bearing plate disposed around the mandrel, the bearing plate comprising an angled inner plate surface configured for engagement with the angled linear transition surface;   a first cone proximate to the first slip; and   a second cone proximate to the second slip.   
     
     
         16 . The downhole tool of  claim 15 , wherein each of the first slip and the second slip comprise a respective slip body configured with a set of mating holes, wherein the lower sleeve comprises a set of pin inserts configured to engage the set of mating holes for the first metal slip, and wherein the bearing plate further comprises a set of bearing plate pin inserts configured to engage the set of mating holes for the second slip. 
     
     
         17 . A downhole tool for use in a wellbore, the downhole tool comprising:
 a mandrel comprising:
 a distal end; a proximate end; an inner flowbore; a ball seat formed in the inner flowbore; and an outer surface; 
   a seal element disposed about the mandrel;   a first slip disposed about the mandrel;   a second slip disposed about the mandrel; and   a lower sleeve disposed proximate to the second slip, and engaged with the mandrel, wherein the proximate end further comprises a failure point defined by an inner groove and a failure point wall thickness between an inner surface of the inner groove and the outer surface in a thickness range of 0.03 inches to 0.1 inches, wherein the inner flowbore further comprises an inner flowbore diameter in a diameter range of 3 inches to 4 inches, and wherein an at least a portion of the mandrel other than the failure point comprises a mandrel wall thickness in a range of 0.3 inches to 0.7 inches.   
     
     
         18 . The downhole tool of  claim 17 , wherein a lower end of the ball seat being at least in a distance range of 3 inches to 5 inches in longitudinal depth from the failure point. 
     
     
         19 . The downhole tool of  claim 18 , wherein at least one or more components of the downhole tool is made of a cured reactive material formed from an initial mixture composition comprising: an epoxy resin and an anhydride curing agent. 
     
     
         20 . The downhole tool of  claim 18 , the downhole tool further comprising:
 a bearing plate disposed around the mandrel, the bearing plate comprising an angled inner plate surface configured for engagement with the angled linear transition surface;   a first cone proximate to the first slip; and   a second cone proximate to the second slip,   wherein each of the first slip and the second slip comprise a respective slip body configured with a set of mating holes, wherein the lower sleeve comprises a set of pin inserts configured to engage the set of mating holes for the first metal slip, and wherein the bearing plate further comprises a set of bearing plate pin inserts configured to engage the set of mating holes for the second slip.