Integrated cast matrix sleeve api connection bit body and method of using and manufacturing the same

Abstract

A drill bit including a bit body and an upper portion, wherein the bit body and the upper portion are comprised of a matrix material, and wherein the upper portion includes a threaded connection comprised of a machineable matrix material is disclosed.

1 . A drill bit, comprising:
 a bit body and an upper portion;   wherein the bit body and the upper portion are comprised of a matrix material; and   wherein the upper portion includes a threaded connection comprised of a machineable matrix material.   
     
     
         2 . The drill bit of  claim 1 , wherein the bit body and upper portion are further comprised of a plurality of abrasive particles. 
     
     
         3 . The drill bit of  claim 2 , wherein the abrasive particles comprise at least one of synthetic diamond, natural diamond, or boron nitride. 
     
     
         4 . The drill bit of  claim 1 , further comprising:
 an extra extended gage, wherein the extra extended gage is comprised of a matrix material.   
     
     
         5 . The drill bit of  claim 4 , wherein the extra extended gage is further comprised of a plurality of abrasive particles. 
     
     
         6 . The drill bit of  claim 4 , wherein the extra extended gage further comprises a plurality of gage protection inserts. 
     
     
         7 . The drill bit of  claim 6 , wherein the inserts comprise at least one of synthetic diamond, natural diamond, or boron nitride. 
     
     
         8 . The drill bit of  claim 1 , wherein the matrix material is tungsten carbide. 
     
     
         9 . The drill bit of  claim 1 , wherein the machineable matrix material is tungsten. 
     
     
         10 . A drill bit, comprising:
 a bit body, an upper portion, and a extra extended gage;   wherein the bit body, the upper portion, and the extra extended gage are comprised of a matrix material; and   wherein the upper portion includes a threaded connection comprised of a machineable matrix material.   
     
     
         11 . The drill bit of  claim 10 , wherein the bit body, the upper portion, and the extra extended gage are further comprised of a plurality of abrasive particles. 
     
     
         12 . The drill bit of  claim 11 , wherein the abrasive particles comprise at least one of synthetic diamond, natural diamond, or boron nitride. 
     
     
         13 . The drill bit of  claim 10 , wherein the extra extended gage further comprises a plurality of gage protection inserts. 
     
     
         14 . The drill bit of  claim 13 , wherein the inserts comprise at least one of synthetic diamond, natural diamond, or boron nitride. 
     
     
         15 . The drill bit of  claim 10 , wherein the matrix material is tungsten carbide. 
     
     
         16 . The drill bit of  claim 10 , wherein the machineable matrix material is tungsten. 
     
     
         17 . A drill bit, comprising:
 a bit body and an upper portion;   wherein the bit body and the upper portion are comprised of a matrix material;   wherein the upper portion includes a threaded connection comprised of a machineable matrix material; and   wherein there is an uninterrupted transition between the bit body and the upper portion.   
     
     
         18 . The drill bit of  claim 17 , wherein the bit body and upper portion are further comprised of a plurality of abrasive particles. 
     
     
         19 . The drill bit of  claim 18 , wherein the abrasive particles comprise at least one of synthetic diamond, natural diamond, or boron nitride. 
     
     
         20 . The drill bit of  claim 17 , further comprising:
 an extra extended gage, wherein the extra extended gage is comprised of a matrix material.   
     
     
         21 . The drill bit of  claim 20 , wherein the extra extended gage is further comprised of a plurality of abrasive particles. 
     
     
         22 . The drill bit of  claim 20 , wherein the extra extended gage further comprises a plurality of gage protection inserts. 
     
     
         23 . The drill bit of  claim 22 , wherein the inserts comprise at least one of synthetic diamond, natural diamond, or boron nitride. 
     
     
         24 . The drill bit of  claim 20 , wherein there is an uninterrupted transition between the bit body and the extra extended gage. 
     
     
         25 . The drill bit of  claim 17 , wherein the matrix material is tungsten carbide. 
     
     
         26 . The drill bit of  claim 17 , wherein the machineable matrix material is tungsten. 
     
     
         27 . A method of manufacturing a single piece matrix drill bit having a body and an upper portion, comprising:
 loading a matrix material in at least a portion of a mold cavity corresponding to a body portion and an upper portion;   loading a machineable matrix material in at least a portion of the mold cavity corresponding to a threaded connection; and   heating the mold contents to form a single piece matrix drill bit.   
     
     
         28 . The method of  claim 27 , further comprising:
 machining the machineable matrix material to form a threaded connection for connecting the single piece matrix drill bit to a drill string.   
     
     
         29 . The method of  claim 27 , further comprising:
 loading a plurality of abrasive particles in at least a portion of the mold cavity.   
     
     
         30 . The method of  claim 27 , further comprising:
 infiltrating the mold contents with an infiltrating binder prior to heating the mold contents.