System and method for stress inversion via image logs and fracturing data

Abstract

Systems and methods for predicting an accurate in-situ stress field in a wellbore in a formation are disclosed. The in-situ stress field is calculated using an optimizing process that takes into account parameters relating to induced tensile fracture that are derived from wellbore image logs and other input data relating to the wellbore. Once values for the in-situ stress field are predicted, those values can be used to generate synthetic image logs which can then be compared to the original image logs to determine the accuracy of the results and if needed repeat the operation to obtain more accurate results.

1 - 45 . (canceled) 
     
     
         46 . A non-transitory program storage device, readable by a processor and comprising instructions stored thereon to cause one or more processors to:
 receive one or more parameters relating to an in-situ stress field in a formation;   receive one or more input parameters relating to the wellbore; and   generate one or more synthetic image logs for the wellbore,   wherein the one or more synthetic image logs are generated based on the one or more parameters relating to the in-situ stress field and the one or more input parameters.   
     
     
         47 . The non-transitory program storage device of  claim 46 , wherein the instructions stored thereon further cause the one or more processors to generate one or more parameters relating to induced tensile fracture in the wellbore based on the one or more parameters relating to the in-situ stress field and the one or more input parameters. 
     
     
         48 . The non-transitory program storage device of  claim 47 , wherein the one or more synthetic image logs are generated based on the one or more parameters relating to the induced tensile fracture in the wellbore. 
     
     
         49 . The non-transitory program storage device of  claim 47 , wherein the one or more parameters relating to the induced tensile fracture in the wellbore comprise at least one of induced tensile fracture angle and induced tensile fracture orientation. 
     
     
         50 . A method for generating one or more synthetic image logs for a wellbore in a formation, the method comprising:
 receiving one or more parameters relating to an in-situ stress field in a formation;   receiving one or more input parameters relating to the wellbore; and   generating one or more synthetic image logs for the wellbore,   wherein the one or more synthetic image logs are generated based on the one or more parameters relating to the in-situ stress field and the one or more input parameters.   
     
     
         51 . The method of  claim 50 , further comprising generating one or more parameters relating to induced tensile fracture in the wellbore based on the one or more parameters relating to the in-situ stress field and the one or more input parameters. 
     
     
         52 . The method of  claim 51 , wherein the one or more synthetic image logs are generated based on the one or more parameters relating to induced tensile fracture in the wellbore. 
     
     
         53 . The method of  claim 51 , wherein the one or more parameters relating to induced tensile fracture around the wellbore comprise at least one of induced tensile fracture angle and induced tensile fracture orientation. 
     
     
         54 . A system, comprising:
 a memory;   a display device; and   a processor operatively coupled to the memory and the display device and adapted to execute program code stored in the memory to:
 receive one or more parameters relating to an in-situ stress field in a formation; 
 receive one or more input parameters relating to the wellbore; and 
 generate one or more synthetic image logs for the wellbore, 
 wherein the one or more synthetic image logs are generated based on the one or more parameters relating to the in-situ stress field and the one or more input parameters. 
   
     
     
         55 . The system of  claim 54 , wherein the processor is further adapted to execute program code stored in the memory to generate one or more parameters relating to induced tensile fracture in the wellbore based on the one or more parameters relating to the in-situ stress field and the one or more input parameters. 
     
     
         56 . The system of  claim 55 , wherein the one or more synthetic image logs are generated based on the one or more parameters relating to induced tensile fracture in the wellbore. 
     
     
         57 . The system of  claim 56 , wherein the one or more parameters relating to induced tensile fracture in the wellbore comprise at least one of induced tensile fracture angle and induced tensile fracture orientation.