Drill bit with distributed force profile

Abstract

A method of making a drill bit for drilling subterranean formations includes forming a first blade having a shape and configuration defined by one or more first parameters and forming a second blade having a shape and configuration defined by one or more second parameters. One of the first parameters is different than one of the second parameters.

1 . A method of making a drill bit for drilling subterranean formations, comprising:
 forming a first blade, the first blade having a shape and configuration defined by one or more first parameters; and   forming a second blade, the second blade having a shape and configuration defined by one or more second parameters;   wherein one of the first parameters is different than one of the second parameters.   
     
     
         2 . The method of  claim 1 , wherein the one of the first parameters is a back rake profile of cutters on the first blade and the one of the second parameters is a back rake profile of cutters on the second blade. 
     
     
         3 . The method of  claim 1 , wherein the one of the first parameters is a density of cone cutters on the first blade and the one of the second parameters is a density of cone cutters on the second blade. 
     
     
         4 . The method of  claim 1 , wherein the one of the first parameters is a density of shoulder cutters on the first blade and the one of the second parameters is a density of shoulder cutters of the second blade. 
     
     
         5 . The method of  claim 1 , wherein the one of the first parameters is an exposure profile of cutters on the first blade and the one of the second parameters is an exposure profile of cutters on the second blade. 
     
     
         6 . The method of  claim 1 , wherein the first blade is formed such that it experiences higher force while being rotated in a borehole than the second blade. 
     
     
         7 . The method of  claim 1 , further comprising
 forming a third blade having a shape and configuration defined by one or more third parameters.   
     
     
         8 . The method of  claim 7 , wherein the first blade is formed such that it experiences higher force while being rotated in a borehole than the second blade and the third blade. 
     
     
         9 . The method of  claim 8 , wherein the third blade is formed such that it experiences higher force while being rotated in a borehole than the second blade and such that, measured in the clockwise direction around the bit, is further away from the first blade than the second blade is from the first blade. 
     
     
         10 . A downhole drill bit comprising:
 a body;   a first blade formed on the body and including a plurality of cutters coupled thereto, the first blade having a shape and configuration defined by one or more first parameters; and   a second blade formed on the body and including a plurality of cutters coupled thereto, the second blade having a shape and configuration defined by one or more second parameters, one of the second parameters being different than one of the first parameters.   
     
     
         11 . The downhole drill bit of  claim 10 , wherein the one of the first parameters is a back rake profile of the cutters coupled to the first blade and the one of the second parameters is a back rake profile of the cutters coupled to the second blade. 
     
     
         12 . The downhole drill bit of  claim 10 , wherein the cutters are cone cutters and wherein the one of the first parameters is a density of the cone cutters coupled to the first blade and the one of the second parameters is a density of the cone cutters coupled to the second blade. 
     
     
         13 . The downhole drill bit of  claim 10 , wherein the cutters are shoulder cutters and wherein the one of the first parameters is a density of the shoulder cutters coupled to the first blade and the one of the second parameters is a density of the shoulder cutters coupled to the second blade. 
     
     
         14 . The downhole drill bit of  claim 10 , wherein the one of the first parameters is an exposure profile of the cutters coupled to the first blade and the one of the second parameters is an exposure profile the cutters coupled to the second blade. 
     
     
         15 . A method of making a drill bit for drilling subterranean formations, comprising:
 forming a first portion of the drill bit, the first portion having a shape and configuration defined by one or more first parameters; and   forming a second portion of the drill bit, the second portion having a shape and configuration defined by one or more second parameters;   wherein one of the first parameters is different than one of the second parameters.   
     
     
         16 . The method of  claim 15 , wherein the first portion is formed such that it experiences higher force while being rotated in a borehole than the second portion. 
     
     
         17 . The method of  claim 15 , further comprising
 forming a third portion having a shape and configuration defined by one or more third parameters.   
     
     
         18 . The method of  claim 17 , wherein the first portion is formed such that it experiences higher force while being rotated in a borehole than the second portion and the third portion. 
     
     
         19 . The method of  claim 18 , wherein the third portion is formed such that it experiences higher force while being rotated in a borehole than the second portion and such that, measured in the clockwise direction around the bit, is further away from the first portion than the second portion is from the first portion.