Drill bit selection for drilling a target well based on drilling simulation of an offset well

Abstract

A method comprises performing an offset well simulation of drilling a section of an offset well using a base drill bit based on data measurements of drilling parameters and drilling conditions measured during drilling of the offset well. The method includes performing the offset well simulation using a new drill bit based on the data measurements of drilling parameters and drilling conditions measured during drilling of the offset well. The method includes selecting the new drill bit as a target drill bit for drilling a target well in response to the new drill bit performance exceeding the base drill bit performance, wherein the base drill bit performance and the new drill bit performance are based on a drill bit efficiency and a drill bit durability.

1 . A method for selection of a target drill bit for drilling a section of a target well, the method comprising:
 performing an offset well simulation of drilling a section of an offset well using a base drill bit based on data measurements of drilling parameters and drilling conditions measured during drilling of the offset well;   determining a base drill bit performance based on the offset well simulation;   selecting a new drill bit for the offset well simulation;   performing the offset well simulation using the new drill bit based on the data measurements of drilling parameters and drilling conditions measured during drilling of the offset well;   determining a new drill bit performance based on the offset well simulation using the new drill bit, wherein the base drill bit performance and the new drill bit performance are based on a drill bit efficiency and a drill bit durability;   determining whether the new drill bit performance exceeds the base drill bit performance; and   selecting the new drill bit as the target drill bit for drilling the target well in response to the new drill bit performance exceeding the base drill bit performance.   
     
     
         2 . The method of  claim 1  further comprising:
 performing an offset well simulation using the base drill bit based on the data measurements of drilling parameters and different drilling conditions measured during drilling of the offset well; 
 determining the base drill bit performs better for the different drilling conditions; and 
 recommending the base drill bit for use in the different drilling conditions. 
 
     
     
         3 . The method of  claim 1 , wherein the drill bit efficiency is derived from at least one of a Rate of Penetration (ROP) or a Torque On Bit (TOB), wherein the drill bit durability is derived from a wear of one or more cutters of the base drill bit for the base drill bit performance and a wear of the one or more cutters of the new drill bit for the new drill bit performance. 
     
     
         4 . The method of  claim 1 , wherein performing the offset well simulation comprises,
 determining, at different points of drilling of the section of the offset well, at least one drilling parameter that comprises at least one of a Torque On Bit (TOB), Weight On Bit (WOB), a Rate of Penetration (ROP), or rotations per unit of time;   determining, at the different points of drilling of the section of the offset well, an energy expended by the base drill bit or the new drill bit used for performing the offset well simulation based on the at least one drilling parameter;   determining, at different points of drilling of the section of the offset well, a condition of the base drill bit or the new drill bit used for performing the offset well simulation that comprises a dullness severity of at least one cutter; and   determining, at the different points of drilling of the section of the offset well, an energy needed by the base drill bit or the new drill bit used for performing the offset well simulation based on the condition of the base drill bit or the new drill bit used for performing the offset well simulation.   
     
     
         5 . The method of  claim 1 , wherein performing the offset well simulation comprises, determining cutter axial force and drag force models of the base drill bit during the drilling of the offset well; and
 calibrating a rock strength of a subsurface formation through which the offset well is drilled based on the cutter axial force and drag force models.   
     
     
         6 . The method of  claim 1 , wherein performing the offset well simulation comprises, determining a rock strength of a subsurface formation through which the offset well; and
 calibrating cutter axial force and drag force models of the base drill bit during the drilling of the offset well based on the rock strength.   
     
     
         7 . The method of  claim 1 , wherein the base drill bit performance and the new drill bit performance are based on a dullness of one or more cutters of the base drill bit and the new drill bit, respectively. 
     
     
         8 . The method of  claim 1 , further comprising:
 performing selecting a new drill bit for offset well simulation, performing the offset well simulation using the new drill bit, determining the new drill bit performance, and determining whether the new drill bit performance exceeds the base drill bit performance until the new drill bit performance exceeds a performance threshold; and   drilling the target well using the new drill bit that most exceeds the performance threshold.   
     
     
         9 . A non-transitory, computer-readable medium having instructions stored thereon that are executable by a processor to perform operations for selection of a target drill bit for drilling a section of a target well, the operations comprising:
 performing an offset well simulation of drilling a section of an offset well using a base drill bit based on data measurements of drilling parameters and drilling conditions measured during drilling of the offset well;   determining a base drill bit performance based on the offset well simulation;   selecting a new drill bit for the offset well simulation;   performing the offset well simulation using the new drill bit based on the data measurements of drilling parameters and drilling conditions measured during drilling of the offset well;   determining a new drill bit performance based on the offset well simulation using the new drill bit, wherein the base drill bit performance and the new drill bit performance are based on a drill bit efficiency and a drill bit durability;   determining whether the new drill bit performance exceeds the base drill bit performance; and   selecting the new drill bit as the target drill bit for drilling the target well in response to the new drill bit performance exceeding the base drill bit performance.   
     
     
         10 . The non-transitory, computer-readable medium of  claim 9  further comprising:
 performing an offset well simulation using the base drill bit based on the data measurements of drilling parameters and different drilling conditions measured during drilling of the offset well; 
 determining the base drill bit performs better for the different drilling conditions; 
 recommending the base drill bit for use in the different drilling conditions. 
 
     
     
         11 . The non-transitory, computer-readable medium of  claim 9 , wherein the drill bit efficiency is derived from at least one of a Rate of Penetration (ROP) or a Torque On Bit (TOB), and wherein the drill bit durability is derived from a wear of one or more cutters of the base drill bit for the base drill bit performance and a wear of the one or more cutters of the new drill bit for the new drill bit performance. 
     
     
         12 . The non-transitory, computer-readable medium of  claim 9 , wherein performing the offset well simulation comprises,
 determining, at different points of drilling of the section of the offset well, at least one drilling parameter that comprises at least one of a Torque On Bit (TOB), Weight On Bit (WOB), a Rate of Penetration (ROP), or rotations per unit of time; and   determining, at the different points of drilling of the section of the offset well, an energy expended by the base drill bit or the new drill bit used for performing the offset well simulation based on the at least one drilling parameter;   determining, at different points of drilling of the section of the offset well, a condition of the base drill bit or the new drill bit used for performing the offset well simulation that comprises a dullness severity of at least one cutter; and   determining, at the different points of drilling of the section of the offset well, an energy needed by the base drill bit or the new drill bit used for performing the offset well simulation based on the condition of the base drill bit or the new drill bit used for performing the offset well simulation.   
     
     
         13 . The non-transitory, computer-readable medium of  claim 9 , wherein the drilling conditions comprise a rock abrasiveness factor of a subsurface formation through which the offset well is drilled. 
     
     
         14 . The non-transitory, computer-readable medium of  claim 9 , wherein performing the offset well simulation comprises,
 determining cutter axial force and drag force models of the base drill bit during the drilling of the offset well; and   calibrating a rock strength of a subsurface formation through which the offset well is drilled based on the cutter axial force and drag force models.   
     
     
         15 . The non-transitory, computer-readable medium of  claim 9 , wherein performing the offset well simulation comprises,
 determining a rock strength of a subsurface formation through which the offset well; and   calibrating cutter axial force and drag force models of the base drill bit during the drilling of the offset well based on the rock strength.   
     
     
         16 . The non-transitory, computer-readable medium of  claim 9 , wherein the base drill bit performance and the new drill bit performance are based on a dullness of one or more cutters of the base drill bit and the new drill bit, respectively. 
     
     
         17 . An apparatus comprising:
 a processor; and   a computer-readable medium having instructions stored thereon that are executable by the processor to cause the processor to,
 perform an offset well simulation of drilling a section of an offset well using a base drill bit based on data measurements of drilling parameters and drilling conditions measured during drilling of the offset well; 
 determine a base drill bit performance based on the offset well simulation; 
 select a new drill bit for the offset well simulation; 
 perform the offset well simulation using the new drill bit based on the data measurements of drilling parameters and drilling conditions measured during drilling of the offset well; 
 determine a new drill bit performance based on the offset well simulation using the new drill bit, wherein the base drill bit performance and the new drill bit performance are based on a drill bit efficiency and a drill bit durability; 
 determine whether the new drill bit performance exceeds the base drill bit performance; and 
 select the new drill bit as a target drill bit for drilling a target well in response to the new drill bit performance exceeding the base drill bit performance. 
   
     
     
         18 . The apparatus of  claim 17  further comprising instructions to:
 perform an offset well simulation using the base drill bit based on the data measurements of drilling parameters and different drilling conditions measured during drilling of the offset well; 
 determine the base drill bit performs better for the different drilling conditions; 
 recommend the base drill bit for use in the different drilling conditions. 
 
     
     
         19 . The apparatus of  claim 17 , wherein the drill bit efficiency is derived from at least one of a Rate of Penetration (ROP) or a Torque On Bit (TOB), wherein the drill bit durability is derived from a wear of one or more cutters of the base drill bit for the base drill bit performance and a wear of the one or more cutters of the new drill bit for the new drill bit performance. 
     
     
         20 . The apparatus of  claim 17 , wherein the instructions that are executable by the processor to cause the processor to perform the offset well simulation comprises instructions that are executable by the processor to cause the processor to,
 determine, at different points of drilling of the section of the offset well, at least one drilling parameter that comprises at least one of a Torque On Bit (TOB), Weight On Bit (WOB), a Rate of Penetration (ROP), or rotations per unit of time;   determine, at the different points of drilling of the section of the offset well, an energy expended by the base drill bit or the new drill bit used for performing the offset well simulation based on the at least one drilling parameter;   determine, at different points of drilling of the section of the offset well, a condition of the base drill bit or the new drill bit used for performing the offset well simulation that comprises a dullness severity of at least one cutter; and   determine, at the different points of drilling of the section of the offset well, an energy needed by the base drill bit or the new drill bit used for performing the offset well simulation based on the condition of the base drill bit or the new drill bit used for performing the offset well simulation.