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US 2013/0158962 A1Published application
Systems and Methods for Computing a Default 3D Variogram Model
AssigneeLandmark Graphics Corporation
InventorsJeffrey Yarus, Genbao Shi, Richard L. Chambers
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Abstract
Systems and methods for computing a variogram model, which utilize a vertical experimental variogram and a horizontal experimental variogram to calculate a 3D default variogram model.
Claims20
A method for computing a variogram model, which comprises:
- selecting input data and grid data, the input data comprising at least well log data and secondary data;
- processing the input data using a computer processor to apply a normal score transform to the input data or to standardize the input data;
- calculating a vertical experimental variogram using i) the well log data after it is processed using the computer processor;
- ii) a default vertical unit lag distance;
- and iii) a default number of lags for the vertical experimental variogram;
- calculating horizontal experimental variograms using i) the secondary data after it is processed using the computer;
- ii) a default horizontal unit lag distance;
- and iii) a default number of lags for the horizontal experimental variogram;
- and
- auto-fitting the vertical experimental variogram and the horizontal experimental variogram to form the variogram model, which represents a default 3D variogram model.
7 more elements
A non-transitory program carrier device tangibly computer executable instructions for computing a variogram model, the instructions being executable to implement:
- selecting input data and grid data, the input data comprising at least well log data and secondary data;
- processing the input data using a computer to apply a normal score transform to the input data or to standardize the input data;
- calculating a vertical experimental variogram using i) the well log data after it is processed using the computer;
- ii) a default vertical unit lag distance;
- and iii) a default number of lags for the vertical experimental variogram;
- calculating horizontal experimental variograms using i) the secondary data after it is processed using the computer;
- ii) a default horizontal unit lag distance;
- and iii) a default number of lags for the horizontal experimental variogram;
- and
- auto-fitting the vertical experimental variogram and the horizontal experimental variogram to form the variogram model, which represents a default 3D variogram model.
7 more elements
Dependencies are inferred from the claim text.