Multiwell structure drilling framework

Abstract

A method may include receiving input for a multiwell structure and subsurface target locations, where the multiwell structure includes slots; generating, based at least in part on the input, a position for the multiwell structure, slot-well assignments for the slots, and well trajectories, where each of the well trajectories extends from an assigned one of the slots to one or more of the subsurface target locations; and outputting a set of specifications for the position for the multiwell structure, the well trajectories, and an order for drilling the well trajectories.

What is claimed is: 
     
         1 . A method comprising:
 receiving input for a multiwell structure and subsurface target locations, wherein the multiwell structure comprises slots;   generating, based at least in part on the input, a position for the multiwell structure, slot-well assignments for the slots, and well trajectories, wherein each of the well trajectories extends from an assigned one of the slots to one or more of the subsurface target locations; and   outputting a set of specifications for the position for the multiwell structure, the slot-well assignments, the well trajectories, and an order for drilling the well trajectories.   
     
     
         2 . The method of  claim 1 , wherein the receiving comprises receiving input for more than one multiwell structure, wherein the generating comprises generating more than one position for the more than one multiwell structure, and wherein the outputting comprises outputting the set of specifications for the more than one position for the more than one multiwell structure. 
     
     
         3 . The method of  claim 1 , wherein the generating comprises computing performance metrics. 
     
     
         4 . The method of  claim 3 , wherein the performance metrics comprise one or more of an anti-collision metric and a drilling difficulty metric. 
     
     
         5 . The method of  claim 4 , wherein the anti-collision metric comprises an oriented separation factor (OSF) metric or a minimum allowable separation (MAS) metric. 
     
     
         6 . The method of  claim 3 , wherein the performance metrics comprise one or more of a total length metric, a curve length metric, and a build length metric. 
     
     
         7 . The method of  claim 3 , wherein the performance metrics comprise rig capacity metrics. 
     
     
         8 . The method of  claim 7 , wherein the rig capacity metrics comprise one or more of a pump pressure metric, a hookload metric, and a torque metric. 
     
     
         9 . The method of  claim 7 , wherein the rig capacity metrics are generated for each of the wells. 
     
     
         10 . The method of  claim 1 , comprising outputting instructions for rendering of a graphical user interface that comprises a graphic of at least the well trajectories that extend from the slots to the subsurface target locations. 
     
     
         11 . The method of  claim 1 , comprising, responsive to receipt of an additional input, modifying one or more of the slot-well assignments and re-generating at least two of the well trajectories. 
     
     
         12 . The method of  claim 1 , comprising, responsive to receipt of an additional input, modifying the position for the multiwell structure and re-generating the slot-well assignments. 
     
     
         13 . The method of  claim 1 , wherein the set of specifications comprises a first set of specifications with a first set of performance metrics and generating a second set of specifications with a second set of performance metrics. 
     
     
         14 . The method of  claim 13 , comprising outputting instructions for rendering of a graphical user interface that comprises a graphic for comparison of the first set of performance metrics and the second set of performance metrics. 
     
     
         15 . The method of  claim 14 , comprising receiving a signal responsive to selection of one of the first set of specifications and the second set of specifications. 
     
     
         16 . The method of  claim 15 , comprising outputting the selected set of specifications for receipt by a drill planning framework. 
     
     
         17 . The method of  claim 16 , comprising executing the drill planning framework to generate a digitally executable drill plan for drilling at least one of the wells. 
     
     
         18 . The method of  claim 1 , wherein the generating comprises determining a scenario and selecting a process based on the scenario, wherein determining the scenario comprises analyzing the input. 
     
     
         19 . A system comprising:
 one or more processors;   memory accessible to at least one of the one or more processors;   processor-executable instructions stored in the memory and executable to instruct the system to:
 receive input for a multiwell structure and subsurface target locations, wherein the multiwell structure comprises slots; 
 generate, based at least in part on the input, a position for the multiwell structure, slot-well assignments for the slots, and well trajectories, wherein each of the well trajectories extends from an assigned one of the slots to one or more of the subsurface target locations; and 
 output a set of specifications for the position for the multiwell structure, the slot-well assignments, the well trajectories, and an order for drilling the well trajectories. 
   
     
     
         20 . One or more computer-readable storage media comprising processor-executable instructions to instruct a computing system to:
 receive input for a multiwell structure and subsurface target locations, wherein the multiwell structure comprises slots;   generate, based at least in part on the input, a position for the multiwell structure, slot-well assignments for the slots, and well trajectories, wherein each of the well trajectories extends from an assigned one of the slots to one or more of the subsurface target locations; and   output a set of specifications for the position for the multiwell structure, the slot-well assignments, the well trajectories, and an order for drilling the well trajectories.