Granted Patent B2

US 12,352,913 · App. 17/194,349 · Granted Jul 8, 2025

Inventors: Leonardo Silveira de Albuquerque Martins (Campinas, BR); Dario Sergio Cersosimo (Lisbon, PT); Leonardo Pondian Tizzei (Sao Paulo, BR); Emilio Ashton Vital Brazil (Rio de Janeiro, BR); Rodrigo da Silva Ferreira (Rio de Janeiro, BR); Renato Fontoura de Gusmao Cerqueira (Rio de Janeiro, BR); Joana de Noronha Ribeiro de Almeida (Lisbon, PT); Astrid de Jesus Torres Fernandez (Lisbon, PT); Ulisses Thibes Mello (Blauvelt, NY)

Assignees: International Business Machines Corporation; Petrogal Brasil S.A.

G01V1/282G01V1/50G06F30/20G01V2210/61

Abstract

Claims (111)

1. A computer implemented method for storing and retrieving subsurface rock physical property models for well drilling, comprising:

generating a plurality of estimated subsurface rock physical property models, each estimated subsurface rock physical property model being based on a respective set of seismic data;

determining a stratigraphic classification based on seismic interpretation data for each of the plurality of estimated subsurface rock physical property models;

storing the plurality of estimated subsurface rock physical property models associated with its respective stratigraphic classification in a database;

determining characteristics of the seismic data used to generate each of the estimated subsurface rock physical property models;

selecting from the database a subset of the estimated subsurface rock physical property models based on a similarity of the stratigraphic classification;

determining measures of similarity between the characteristics of the seismic data used to generate each of subset of estimated subsurface rock physical property models and a new set of seismic data;

retrieving at least one estimated subsurface rock physical property model from the subset of estimated subsurface rock physical property model based on the similarity measures;

processing a given a seismic image into image texture descriptors for serving as a horizontal filter in determining the measures of similarity;

performing, based on the at least one estimated subsurface rock physical property model, drilling exploration of geolocation associated with the new set of seismic data;

inserting a new well data into the database;

notifying that the new well data is successfully inserted into the database;

searching the database and finding an estimated subsurface rock physical property model associated with seismic data of the new well;

requesting and receiving permission to update the estimated subsurface rock physical property model; and

updating the estimated subsurface rock physical property model based on the new well data;

wherein determining measures of similarity and retrieving at least one estimated subsurface rock physical property model, comprises:

providing a list of available seismic data interpretations based a current set of seismic data from a second area;

selecting a subset of the available seismic data interpretations;

measuring a statistical distribution of the current set of seismic data and its derivatives;

searching the database for models associated with seismic data interpretations having stratigraphic classifications that match those of the selected subset of seismic data interpretations;

comparing a goodness of fit distance of a distribution of a model for each model whose stratigraphic classifications match those of the selected subset of seismic data interpretations; and

retrieving the at least one estimated subsurface rock physical property model based on the comparison.

2. The computer implemented method of claim 1 , further comprising normalizing the plurality of subsurface rock physical property models using interpreted reflection horizons.

3. The computer implemented method of claim 2 , wherein the stratigraphic classification is based on the interpreted reflection horizons.

4. The computer implemented method of claim 1 , wherein the measures of similarity are determined based on multivariate symmetric goodness-of-fit statistical metrics between a given area whose physical properties are to be predicted and the areas used to calibrate the plurality of estimated subsurface rock physical property models.

5. The computer implemented method of claim 1 , wherein the measures of similarity include a vertical component determined by comparing the classified seismic stratigraphies.

6. The computer implemented method of claim 1 , wherein the measures of similarity include a measure based on image texture descriptors.

7. The computer implemented method of claim 1 , wherein at least one of the plurality of estimated subsurface rock physical property models is generated by a method comprising:

selecting a set of seismic data;

providing a list of horizons for the selected set of seismic data;

selecting two or more of the horizons;

providing a list of physical properties available in well logs in vertical area of the selected two or more of the horizons;

selecting a physical property to be modeled;

providing a list of the available wells with the selected physical property;

selecting one or more of the available wells as a reference well to be used to correlate the desired physical property and the seismic data;

selecting derivatives of the set of seismic data; and

running a model estimation algorithm using the selected derivatives to generate the subsurface rock physical property model for the one or more reference wells.

8. The computer implemented method of claim 7 , wherein the physical properties available in well logs in the vertical area are defined by a topmost and bottom most of the two or more horizons.

9. The computer implemented method of claim 7 , wherein determining characteristics of the seismic data comprises calculating coefficients describing a functional relationship between the selected physical property and the selected seismic data derivatives and storing the coefficients with the estimated model.

10. The computer implemented method of claim 7 , wherein determining characteristics of the seismic data comprises calculating a statistical ground truth test on the reference well and storing the result with the estimated model.

11. The computer implemented method of claim 10 , wherein determining characteristics of the seismic data comprises calculating a distribution of covariates the set of seismic data and their derivatives on the ground truth tested well and storing with the model.

12. The computer implemented method of claim 11 , wherein the distribution of covariates is calculated from the set of seismic data and their derivatives.

13. The computer implemented method of claim 1 , further comprising calculating a product of the goodness of fit distance and a statistical ground truth test stored with each model and retrieving the at least one estimated subsurface rock physical property model based on the calculated product.

14. A computer system for storing and retrieving subsurface rock physical property models for well drilling, comprising:

one or more computer processors;

one or more non-transitory computer-readable storage media;

program instructions, stored on the one or more non-transitory computer-readable storage media, which when implemented by the one or more processors, cause the computer system to perform the steps of:

generating a plurality of estimated subsurface rock physical property models, each estimated subsurface rock physical property model being based on a respective set of seismic data;

determining a stratigraphic classification based on seismic interpretation data for each of the plurality of estimated subsurface rock physical property models;

storing the plurality of estimated subsurface rock physical property models associated with its respective stratigraphic classification in a database;

determining characteristics of the seismic data used to generate each of the estimated subsurface rock physical property models;

selecting from the database a subset of the estimated subsurface rock physical property models based on a similarity of the stratigraphic classification;

determining measures of similarity between the characteristics of the seismic data used to generate each of subset of estimated subsurface rock physical property models and a new set of seismic data;

retrieving at least one estimated subsurface rock physical property model from the subset of estimated subsurface rock physical property model based on the similarity measures;

processing a given a seismic image into image texture descriptors for serving as a horizontal filter in determining the measures of similarity;

performing, based on the at least one estimated subsurface rock physical property model, drilling exploration of geolocation associated with the new set of seismic data;

inserting a new well data into the database;

notifying that the new well data is successfully inserted into the database;

searching the database and finding an estimated subsurface rock physical property model associated with seismic data of the new well;

requesting and receiving permission to update the estimated subsurface rock physical property model; and

updating the estimated subsurface rock physical property model based on the new well data;

wherein the program instructions cause the computer to generate at least one of the plurality of estimated subsurface rock physical property models by:

selecting a set of seismic data;

providing a list of horizons for the selected set of seismic data;

selecting two or more of the horizons;

providing a list of physical properties available in well logs in the vertical area;

selecting a physical property to be modeled;

providing a list of the available wells with the selected physical property;

selecting one or more of the available wells as a reference well to be used to correlate the selected physical property and the seismic data;

selecting derivatives of the set of seismic data; and

running a model estimation algorithm using the selected derivatives to generate the subsurface rock physical property model for the one or more reference wells.

15. The computer system of claim 14 , wherein the program instructions cause the computer to perform determining measures of similarity and retrieving at least one estimated subsurface rock physical property model by:

providing a list of available seismic data interpretations based a current set of seismic data from the second area;

selecting a subset of the available seismic data interpretations;

measuring a statistical distribution of the current set of seismic data and its derivatives;

searching the database for models associated with seismic data interpretations having stratigraphic classifications that match those of the selected subset of seismic data interpretations;

comparing a goodness of fit distance of the distribution of the model for each model whose stratigraphic classifications match those of the selected subset of seismic data interpretations; and

retrieving the at least one estimated subsurface rock physical property model based on the comparison.

16. A computer program product comprising:

program instructions on a computer-readable storage medium, where execution of the program instructions using a computer causes the computer to perform a method for storing and retrieving subsurface rock physical property models for well drilling, comprising:

generating a plurality of estimated subsurface rock physical property models, each estimated subsurface rock physical property model being based on a respective set of seismic data;

determining a stratigraphic classification based on seismic interpretation data for each of the plurality of estimated subsurface rock physical property models;

storing the plurality of estimated subsurface rock physical property models associated with its respective stratigraphic classification in a database;

determining characteristics of the seismic data used to generate each of the estimated subsurface rock physical property models;

selecting from the database a subset of the estimated subsurface rock physical property models based on a similarity of the stratigraphic classification;

determining measures of similarity between the characteristics of the seismic data used to generate each of subset of estimated subsurface rock physical property models and a new set of seismic data; and

retrieving at least one estimated subsurface rock physical property model from the subset of estimated subsurface rock physical property model based on the similarity measures;

processing a given a seismic image into image texture descriptors for serving as a horizontal filter in determining the measures of similarity;

performing, based on the at least one estimated subsurface rock physical property model, drilling exploration of geolocation associated with the new set of seismic data;

inserting a new well data into the database;

notifying that the new well data is successfully inserted into the database;

searching the database and finding an estimated subsurface rock physical property model associated with seismic data of the new well;

requesting and receiving permission to update the estimated subsurface rock physical property model; and

updating the estimated subsurface rock physical property model based on the new well data;

wherein execution of the program instructions causes the computer to generate at least one of the plurality of estimated subsurface rock physical property models by:

selecting a set of seismic data;

providing a list of horizons for the selected set of seismic data;

selecting two or more of the horizons;

providing a list of physical properties available in well logs in vertical area;

selecting a physical property to be modeled;

providing a list of the available wells with the selected physical property;

selecting one or more of the available wells as a reference well to be used to correlate the selected physical property and the seismic data;

selecting derivatives of the set of seismic data; and

running a model estimation algorithm using the selected derivatives to generate the subsurface rock physical property model for the one or more reference wells.

17. The computer program product of claim 16 , wherein execution of the program instructions causes the computer to perform determining measures of similarity and retrieving at least one estimated subsurface rock physical property model by:

providing a list of available seismic data interpretations based a current set of seismic data from a second area;

selecting a subset of the available seismic data interpretations;

measuring a statistical distribution of the current set of seismic data and its derivatives;

searching the database for models associated with seismic data interpretations having stratigraphic classifications that match those of the selected subset of seismic data interpretations;

comparing a goodness of fit distance of the distribution of the model for each model whose stratigraphic classifications match those of the selected subset of seismic data interpretations; and

retrieving the at least one estimated subsurface rock physical property model based on the comparison.

Assignments (3)

Continuity (1)

References Cited (21)

Cited By (1)

US 12,687,650