METHOD AND SYSTEM FOR PRESENTING SEISMIC INFORMATION

• US 20140163890A1
• Filed: 12/04/2013
• Published: 06/12/2014
• Est. Priority Date: 12/06/2012
• Status: Active Grant

• Current Assignee: Roxar Software Solutions AS (Emerson Electric Company)
• Original Assignee: Roxar Software Solutions AS (Emerson Electric Company)
• Inventors: LEAHY, Garrett
• Granted Patent: US 9,523,783 B2
• Time in Patent Office: Days
• US Class Current: 702/16
• CPC Class Codes: G01V 1/302 in 3D data cubes
• CPC Class Codes: G01V 1/307 for determining seismic attributes, e.g. amplitude, instantaneous phase or frequency, reflection strength or polarity
• CPC Class Codes: G01V 1/345 Visualisation of seismic data or attributes, e.g. in 3D cubes
• CPC Class Codes: G01V 2210/64 Geostructures, e.g. in 3D data cubes
• CPC Class Codes: G01V 2210/665 using geostatistical modeling
• CPC Class Codes: G01V 2210/667 Determining confidence or uncertainty in parameters

Abstract

The present invention relates to a system mapping geological formations related to seismic studies comprising interrogation means for sampling information from geological features in a mapped area, e.g. through seismic sampling methods, the sampled information being stored in association with a position related to the sampled information providing a mapping of the area, wherein the system also comprises analyzing means for obtaining attribute information related to the sampled information in each position and storing said attribute information associated to said positions so as to provide an ensemble of attribute values related to the mapped area subject to the seismic studies.

Claims

1. System mapping geological formations related to seismic studies comprising interrogation means for sampling information from geological features in a mapped area, e.g. through seismic sampling methods, the sampled information being stored in association with a position related to the sampled information providing a mapping of the area, wherein the system also comprises analyzing means for obtaining attribute information related to the sampled information in each position and storing said attribute information associated to said positions so as to provide an ensemble of attribute values related to the mapped area subject to the seismic studies.

2. System according to claim 1, wherein at least one of said attributes values is related to calculated uncertainty of the sampled information.

3. System according to claim 1, wherein the geological features include subsurface horizons and/or faults.

4. System according to claim 1, wherein an ensemble of mappings is obtained from multiple interpretations of the data.

5. System according to claim 4, in which the ensemble of mappings is obtained via a sampling of model space as indicated by uncertainty in a given measurement.

6. System according to claim 1, wherein the attribute values are derived from seismic data, for example amplitude attributes, isochore attributes, or other possible metrics.

7. System according to claim 1, wherein the attribute values are derived from geophysical data or models, for example density models or resistivity models.

8. System according to claim 1, wherein said feature and spatial positions describing a subsurface feature, comprising calculating means for determining said property or attribute given an individual estimate of feature position, estimates of the property at each spatial location provided by the set of positions associated with a given feature, and the subsequent use of said property estimate distributions in subsurface mapping.

9. System according to claim 8, comprising means for generating a set of said of spatial positions describing a subsurface feature.

10. Method for using a system according to claim 1, producing hydrocarbons comprising:

conducting a subsurface survey;

interpreting the survey in such a way as to produce an ensemble of mappings;

producing an ensemble of attribute values from said mappings;

drilling a well at least partly based on said ensemble of attribute values; and

producing hydrocarbons from the well.