Adaptive multiscale near-wellbore stress and stability analysis method

Abstract

A computer-implemented method for determining near-wellbore stress and state in a drilled well includes: importing input data of a form of data files; calculating stress and pressure parameters along a wellbore path from the input data imported; displaying one or more of the input data and the calculated stress and pressure parameters along a well path of the drilled well; receiving, by a graphical user interface (GUI), a user selection of a depth at which distribution of the near-wellbore stress and state around a wellbore is determined; in response to receiving the user selection, calculating near-wellbore parameters describing the near-wellbore stress and state around the wellbore; and displaying, by the GUI, the calculated near-wellbore parameters around the wellbore.

What is claimed is: 
     
         1 . A computer-implemented method for determining near-wellbore stress and state in a drilled well, comprising:
 importing input data of a form of data files;   calculating stress and pressure parameters along a wellbore path from the input data imported;   displaying one or more of the input data and the calculated stress and pressure parameters along a well path of the drilled well;   receiving, by a graphical user interface (GUI), a user selection of a depth at which to determine distribution of the near-wellbore stress and state around a wellbore;   in response to receiving the user selection, calculating near-wellbore parameters describing the near-wellbore stress and state around the wellbore; and   displaying, by the GUI, the calculated near-wellbore parameters around the wellbore.   
     
     
         2 . The method according to  claim 1 , wherein the input data comprises one or more of:
 measured properties of a geological formation around the drilled well; and   properties of the geological formation around the drilled well that are obtained from mechanical earth models.   
     
     
         3 . The method according to  claim 1 , wherein the input data comprises one or more of:
 stresses in a geological formation around the drilled well;   pore pressures in the drilled well;   elastic properties of the geological formation around the drilled well;   plastic properties of the geological formation around the drilled well;   permeability of the geological formation around the drilled well; and   porosity of the geological formation around the drilled well.   
     
     
         4 . The method according to  claim 1 , wherein
 the input data comprises data values along the well path, and   the form of data files is a tabular format.   
     
     
         5 . The method according to  claim 1 , wherein the stress and pressure parameters calculated comprises one or more of:
 maximum and minimum horizontal stresses and orientations around a borehole;   borehole collapse pressure; and   borehole fracturing pressure.   
     
     
         6 . The method according to  claim 1 , wherein the near-wellbore parameters calculated comprise one or more of:
 stress tensor in a geological formation around the drilled well;   failure potential curve around the drilled well;   failure region around the drilled well; and   safe mud weight window.   
     
     
         7 . A non-transitory computer-readable medium storing instructions which, when executed, cause a computer to perform operations comprising:
 importing input data of a form of data files;   calculating stress and pressure parameters along a wellbore path from the input data imported;   displaying one or more of the input data and the calculated stress and pressure parameters along a well path of a drilled well;   receiving, by a graphical user interface (GUI), a user selection of a depth at which distribution of near-wellbore stress and state around a wellbore is determined;   in response to receiving the user selection, calculating near-wellbore parameters describing the near-wellbore stress and state around the wellbore; and   displaying, by the GUI, the calculated near-wellbore parameters around the wellbore.   
     
     
         8 . The non-transitory computer-readable medium according to  claim 7 , wherein the input data comprises one or more of:
 measured properties of a geological formation around the drilled well; and   properties of the geological formation around the drilled well that are obtained from mechanical earth models.   
     
     
         9 . The non-transitory computer-readable medium according to  claim 7 , wherein the input data comprises one or more of:
 stresses in a geological formation around the drilled well;   pore pressures in the drilled well;   elastic properties of the geological formation around the drilled well;   plastic properties of the geological formation around the drilled well;   permeability of the geological formation around the drilled well; and   porosity of the geological formation around the drilled well.   
     
     
         10 . The non-transitory computer-readable medium according to  claim 7 , wherein
 the input data comprises data values along the well path, and   the form of data files is a tabular format.   
     
     
         11 . The non-transitory computer-readable medium according to  claim 7 , wherein the stress and pressure parameters calculated comprises one or more of:
 maximum and minimum horizontal stresses and orientations around a borehole;   borehole collapse pressure; and   borehole fracturing pressure.   
     
     
         12 . The non-transitory computer-readable medium according to  claim 7 , wherein the near-wellbore parameters calculated comprise one or more of:
 stress tensor in a geological formation around the drilled well;   failure potential curve around the drilled well;   failure region around the drilled well; and   safe mud weight window.   
     
     
         13 . A device, comprising:
 at least one hardware processor; and   a non-transitory computer-readable storage medium coupled to the at least one hardware processor and storing programming instructions for execution by the at least one hardware processor, wherein   the programming instructions, when executed, cause the at least one hardware processor to perform operations comprising:
 importing input data of a form of data files; 
 calculating stress and pressure parameters along a wellbore path from the input data imported; 
 displaying one or more of the input data and the calculated stress and pressure parameters along a well path of a drilled well; 
 receiving, by a graphical user interface (GUI), a user selection of a depth at which distribution of near-wellbore stress and state around a wellbore is determined; 
 in response to receiving the user selection, calculating near-wellbore parameters describing the near-wellbore stress and state around the wellbore; and 
 displaying, by the GUI, the calculated near-wellbore parameters around the wellbore. 
   
     
     
         14 . The device according to  claim 13 , wherein the input data comprises one or more of:
 measured properties of a geological formation around the drilled well; and   properties of the geological formation around the drilled well that are obtained from mechanical earth models.   
     
     
         15 . The device according to  claim 13 , wherein the input data comprises one or more of:
 stresses in a geological formation around the drilled well;   pore pressures in the drilled well;   elastic properties of the geological formation around the drilled well;   plastic properties of the geological formation around the drilled well;   permeability of the geological formation around the drilled well; and   porosity of the geological formation around the drilled well.   
     
     
         16 . The device according to  claim 13 , wherein
 the input data comprises data values along the well path, and   the form of data files is a tabular format.   
     
     
         17 . The device according to  claim 13 , wherein the stress and pressure parameters calculated comprises one or more of:
 maximum and minimum horizontal stresses and orientations around a borehole;   borehole collapse pressure; and   borehole fracturing pressure.   
     
     
         18 . The device according to  claim 13 , wherein the near-wellbore parameters calculated comprise one or more of:
 stress tensor in a geological formation around the drilled well;   failure potential curve around the drilled well;   failure region around the drilled well; and   safe mud weight window.