Automatic calibration of forward depositional models

Abstract

The subject matter of this specification can be embodied in, among other things, a method for geological modeling includes receiving a forward depositional model, determining a Latin Hypercube Sampling (LHS) stratigraphic model based on the projected forward depositional model, performing forward depositional modeling, transform the forward depositional model from time domain to stratigraphic-depth domain, determining one or more pseudo-wells based on the transformed model, determining a mismatch value based on the transformed forward depositional model and a collection of simulated physical value, and determining a kriging surrogate model based on the LHS stratigraphic model and the mismatch value.

What is claimed is: 
     
         1 . A method geological modeling comprising:
 receiving a forward depositional model;   determining a Latin Hypercube Sampling (LHS) stratigraphic model based on the projected forward depositional model;   performing forward depositional modeling;
 transform the forward depositional model from time domain to stratigraphic-depth domain; 
   determining one or more pseudo-wells based on the transformed model;   determining a mismatch value based on the transformed forward depositional model and a collection of simulated physical values; and   determining a kriging surrogate model based on the LHS stratigraphic model and the mismatch value.   
     
     
         2 . The method of  claim 1 , wherein the forward depositional model is based on well log data descriptive of a drilled well path through a predetermined geographical area. 
     
     
         3 . The method of  claim 2 , further comprising:
 receiving the well log data descriptive of the drilled well path through the predetermined geographical area; and   projecting, based on the well log data, the drilled well path to forward depositional model coordinates in the forward depositional model.   
     
     
         4 . The method of  claim 1 , wherein the collection of simulated physical values comprises a collection of at least one of hydraulic values, geological values, and sedimentological values. 
     
     
         5 . The method of  claim 1 , further comprising:
 determining a drilling path based on an identified set of predetermined input parameters; and   drilling a well based on the determined drilling path.   
     
     
         6 . The method of  claim 1 , wherein determining a mismatch value based on the transformed forward depositional model and the collection of simulated physical values comprises:
 identifying a first collection of geological parameter values representative of geological properties measured at predetermined points along a drilled well path;   determining a second collection of geological parameter values representative of simulated geological properties of the LHS stratigraphic model at the predetermined points along the drilled well path;   determining a collection of difference values comprising differences between selected geological parameter values of the first collection and corresponding geological parameter values of the second collection; and   providing the collection of differences as the mismatch value.   
     
     
         7 . The method of  claim 1 , wherein determining the kriging surrogate model comprises:
 determining a plurality of simulated models based on the LHS stratigraphic model and a collection forward depositional model parameters;   determining a plurality of approximation models that are emulative of the plurality of simulated models;   ranking the plurality of approximation models based on a comparison of each approximation model to the forward depositional model; and   identifying, based on the ranking, an approximation model of the plurality of approximation models that is emulative of the surrogate model.   
     
     
         8 . The method of  claim 7 , wherein determining a plurality of simulated models based on the LHS stratigraphic model and a collection forward depositional model parameters comprises determining kriging predictions for locations not included in the forward depositional model. 
     
     
         9 . A system for geographical modeling, comprising:
 a control system comprising one or more processors; and   a non-transitory computer-readable medium storing instructions executable by the one or more processors to perform operations comprising:
 receiving a forward depositional model; 
 determining a Latin Hypercube Sampling (LHS) stratigraphic model based on the projected forward depositional model; 
 performing forward depositional modeling; 
 transform the forward depositional model from time domain to stratigraphic-depth domain; 
 determining one or more pseudo-wells based on the transformed model; 
 determining a mismatch value based on the transformed forward depositional model and a collection of simulated physical values; and 
 determining a kriging surrogate model based on the LHS stratigraphic model and the mismatch value. 
   
     
     
         10 . The system of  claim 9 , further comprising:
 determining a drilling path based on an identified set of predetermined input parameters; and   drilling a well based on the determined drilling path.   
     
     
         11 . The system of  claim 9 , wherein determining a mismatch value based on the transformed forward depositional model and the collection of simulated physical values comprises:
 identifying a first collection of geological parameter values representative of geological properties measured at predetermined points along a drilled well path;   determining a second collection of geological parameter values representative of simulated geological properties of the LHS stratigraphic model at the predetermined points along the drilled well path;   determining a collection of difference values comprising differences between selected geological parameter values of the first collection and corresponding geological parameter values of the second collection; and   providing the collection of differences as the mismatch value.   
     
     
         12 . The system of  claim 9 , wherein determining the kriging surrogate model comprises:
 determining a plurality of simulated models based on the LHS stratigraphic model and a collection forward depositional model parameters;   determining a plurality of approximation models that are emulative of the plurality of simulated models;   ranking the plurality of approximation models based on a comparison of each approximation model to the forward depositional model; and   identifying, based on the ranking, an approximation model of the plurality of approximation models that is emulative of the surrogate model.   
     
     
         13 . The system of  claim 12 , wherein determining a plurality of simulated models based on the LHS stratigraphic model and a collection forward depositional model parameters comprises determining kriging predictions for locations not included in the forward depositional model. 
     
     
         14 . A non-transitory computer-readable medium storing instructions executable by a processing device to perform operations comprising:
 receiving a forward depositional model;   determining a Latin Hypercube Sampling (LHS) stratigraphic model based on the projected forward depositional model;   performing forward depositional modeling;   transform the forward depositional model from time domain to stratigraphic-depth domain;   determining one or more pseudo-wells based on the transformed model;   determining a mismatch value based on the transformed forward depositional model and a collection of simulated physical values;   determining a kriging surrogate model based on the LHS stratigraphic model and the mismatch value.   
     
     
         15 . The medium of  claim 14 , wherein the forward depositional model is based on well log data descriptive of a drilled well path through a predetermined geographical area. 
     
     
         16 . The medium of  claim 15 , the operations further comprising:
 receiving the well log data descriptive of the drilled well path through the predetermined geographical area; and   projecting, based on the well log data, the drilled well path to forward depositional model coordinates in the forward depositional model.   
     
     
         17 . The medium of  claim 14 , the operations further comprising:
 determining a drilling path based on an identified set of predetermined input parameters; and   drilling a well based on the determined drilling path.   
     
     
         18 . The medium of  claim 14 , wherein determining a mismatch value based on the transformed forward depositional model and the collection of simulated physical values comprises:
 identifying a first collection of geological parameter values representative of geological properties measured at predetermined points along a drilled well path;   determining a second collection of geological parameter values representative of simulated geological properties of the LHS stratigraphic model at the predetermined points along the drilled well path;   determining a collection of difference values comprising differences between selected geological parameter values of the first collection and corresponding geological parameter values of the second collection; and   providing the collection of differences as the mismatch value.   
     
     
         19 . The medium of  claim 14 , wherein determining the kriging surrogate model comprises:
 determining a plurality of simulated models based on the LHS stratigraphic model and a collection forward depositional model parameters;   determining a plurality of approximation models that are emulative of the plurality of simulated models;   ranking the plurality of approximation models based on a comparison of each approximation model to the forward depositional model; and   identifying, based on the ranking, an approximation model of the plurality of approximation models that is emulative of the surrogate model.   
     
     
         20 . The medium of  claim 19 , wherein determining a plurality of simulated models based on the LHS stratigraphic model and a collection forward depositional model parameters comprises determining kriging predictions for locations not included in the forward depositional model.