Target trajectory for geosteering drilling of a wellbore

Abstract

A method comprises retrieving geoscience data of a subsurface formation into which a wellbore is being drilled and retrieving drilling operation data for drilling the wellbore. The method includes determining at least one of an optimized target trajectory of a path of the wellbore to be drilled or a series of control operations for the drilling in order to follow the path of the wellbore to be drilled, independent of using waypoints as input and based the geoscience data and the drilling operation data. The method includes modifying geosteering of the drilling of the wellbore based on the at least one of the optimized target trajectory or the series of the control operations.

1 . A method comprising:
 retrieving geoscience data of a subsurface formation into which a wellbore is being drilled;   retrieving drilling operation data for drilling the wellbore;   determining at least one of an optimized target trajectory of a path of the wellbore to be drilled or a series of control operations for the drilling in order to follow the path of the wellbore to be drilled, independent of using waypoints as input and based the geoscience data and the drilling operation data; and   modifying geosteering of the drilling of the wellbore based on the at least one of the optimized target trajectory or the series of the control operations.   
     
     
         2 . The method of  claim 1 , further comprising identifying at least one avoidance location in the subsurface formation through which the path of the wellbore should not include. 
     
     
         3 . The method of  claim 2 , further comprising identifying operational parameter data that comprises at least one of operational parameter settings or operational parameter limits based on the drilling operation data. 
     
     
         4 . The method of  claim 3 , wherein determining the optimized target trajectory of the path of the wellbore to be drilled comprises determining the optimized target trajectory based on the at least one avoidance location and the operational parameter data. 
     
     
         5 . The method of  claim 1 , further comprising:
 after retrieving the geoscience data and the drilling operation data, determining whether a trigger event has occurred; and   after determining that the trigger event has occurred,
 determining the at least one of the optimized target trajectory of the path of the wellbore to be drilled or the series of control operations and 
 modifying geosteering of the drilling of the wellbore. 
   
     
     
         6 . The method of  claim 5 , wherein the trigger event comprises a time-based trigger that occurs after a defined interval of time. 
     
     
         7 . The method of  claim 5 , wherein the trigger event comprises a depth-based trigger that occurs after a defined level of depth of drilling of the wellbore. 
     
     
         8 . The method of  claim 5 , wherein the trigger event comprises a geoscience-based trigger that occurs in response to a threshold change in a geological attribute in the subsurface formation through which the wellbore is being drilled. 
     
     
         9 . The method of  claim 8 , wherein the geological attribute comprises at least one of a porosity, a resistivity, or a percentage of water. 
     
     
         10 . A system comprising:
 a drill string comprising a drill bit to drill a wellbore in a subsurface formation;   a processor; and   a machine-readable medium having instructions stored thereon that are executable by the processor to cause the processor to,
 retrieve geoscience data of the subsurface formation into which the wellbore is being drilled; 
 retrieve drilling operation data for drilling the wellbore; 
 determine at least one of an optimized target trajectory of a path of the wellbore to be drilled or a series of control operations for the drilling in order to follow the path of the wellbore to be drilled, independent of using waypoints as input and based the geoscience data and the drilling operation data; and 
 modify geosteering of the drilling of the wellbore based on the at least one of the optimized target trajectory or the series of the control operations. 
   
     
     
         11 . The system of  claim 10 ,
 wherein the drill string comprises at least one sensor to detect geoscience data of the subsurface formation during drilling of the wellbore, and   wherein the instructions to cause the processor to retrieve the geoscience data comprises instructions to cause the processor to retrieve the geoscience data detected by the at least one sensor.   
     
     
         12 . The system of  claim 10 , wherein the instructions comprise instructions that are executable by the processor to cause the processor to
 identify at least one avoidance location in the subsurface formation through which the path of the wellbore should not include, and   identify operational parameter data that comprises at least one of operational parameter settings or operational parameter limits based on the drilling operation data, and   wherein the instructions to cause the processor to determine the optimized target trajectory of the path of the wellbore to be drilled comprises instructions to cause the processor to determine the optimized target trajectory based on the at least one avoidance location and the operational parameter data.   
     
     
         13 . The system of  claim 10 , wherein the instructions comprise instructions to cause the processor to:
 after retrieving the geoscience data and the drilling operation data, determine whether a trigger event has occurred; and   after determining that the trigger event has occurred,
 determine the at least one the optimized target trajectory of the path of the wellbore to be drilled or the control operations and 
 modify geosteering of the drilling of the wellbore based on the at least one of the optimized target trajectory or the series of the control operations. 
   
     
     
         14 . The system of  claim 13 , wherein the trigger event comprises a time-based trigger that occurs after a defined interval of time. 
     
     
         15 . The system of  claim 13 , wherein the trigger event comprises a depth-based trigger that occurs after a defined level of depth of drilling of the wellbore. 
     
     
         16 . The system of  claim 13 , wherein the trigger event comprises a geoscience-based trigger that occurs in response to a threshold change in a geological attribute in the subsurface formation through which the wellbore is being drilled. 
     
     
         17 . The system of  claim 16 , wherein the geological attribute comprises at least one of a porosity, a resistivity, or a percentage of water. 
     
     
         18 . A non-transitory, computer-readable medium having instructions stored thereon that are executable by a processor to perform operations comprising:
 retrieving geoscience data of a subsurface formation into which a wellbore is being drilled;   retrieving drilling operation data for drilling the wellbore;   determining at least one of an optimized target trajectory of a path of the wellbore to be drilled or a series of control operations for the drilling in order to follow the path of the wellbore to be drilled, independent of using waypoints as input and based the geoscience data and the drilling operation data; and   modifying geosteering of the drilling of the wellbore based on the at least one of the optimized target trajectory or the series of control operations.   
     
     
         19 . The non-transitory, computer-readable medium of  claim 18 , wherein the operations comprise,
 identifying at least one avoidance location in the subsurface formation through which the path of the wellbore should not include; and   identifying operational parameter data that comprises at least one of operational parameter settings or operational parameter limits based on the drilling operation data, and   wherein determining the optimized target trajectory of the path of the wellbore to be drilled comprises determining the optimized target trajectory based on the at least one avoidance location and the operational parameter data.   
     
     
         20 . The non-transitory, computer-readable medium of  claim 19 , wherein the operations comprise,
 after retrieving the geoscience data and the drilling operation data, determining whether a trigger event has occurred; and   after determining that the trigger event has occurred,
 determining the at least one of the optimized target trajectory of the path of the wellbore to be drilled or the series of control operations, and 
 modifying geosteering of the drilling of the wellbore based on the at least one of the optimized target trajectory or the series of control operations. 
   
     
     
         21 . The non-transitory, computer-readable medium of  claim 20 , wherein the trigger event comprises a time-based trigger that occurs after a defined interval of time. 
     
     
         22 . The non-transitory, computer-readable medium of  claim 20 , wherein the trigger event comprises a depth-based trigger that occurs after a defined level of depth of drilling of the wellbore. 
     
     
         23 . The non-transitory, computer-readable medium of  claim 20 , wherein the trigger event comprises a geoscience-based trigger that occurs in response to a threshold change in a geological attribute in the subsurface formation through which the wellbore is being drilled. 
     
     
         24 . The non-transitory, computer-readable medium of  claim 23 , wherein the geological attribute comprises at least one of a porosity, a resistivity, or a percentage of water.