# US 2009/0260883 A1 · Continuous measurement of heterogeneity of geomaterials

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- Number: US 2009/0260883 A1
- Document ID: US20090260883A1
- Status: Published application
- Kind: A1
- Application number: 12/417,694
- Filed: 2009-04-03
- Published: 2009-10-22
- Earliest claimed: 2008-04-16
- Assignees: TerraTek, Inc.
- Inventors: ROBERTO SUAREZ-RIVERA; SIDNEY J. GREEN; JOEL WESLEY MARTIN; ROBERT MICHAEL GRIFFIN
- Web page: https://patentgrep.com/patent/US20090260883A1

## CPC

- G01V 11/00: Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
- G01V: GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS (means for indicating the location of accidentally buried, e.g. snow-buried, persons A63B29/02)

## Abstract

A method for continuous measurement of heterogeneity of geomaterials. The method includes identifying a core section from a first well within a field, obtaining the core section from the first well, and obtaining a continuous measurement of the core section. The method further includes overlaying the continuous measurement with a portion of a log response for the first well to obtain an overlay, associating an observation with the overlay to obtain an integrated overlay, and analyzing the integrated overlay to determine a heterogeneity of the core section. The method further includes identifying a location in the core section from which to obtain a sample based on the heterogeneity, obtaining the sample from the core section, and analyzing the sample to obtain an analysis result. The method further includes developing a continuous model for the first well using the integrated overlay and the analysis result and presenting the continuous model.

## Claims

### Claim 1

A method for continuous measurement of heterogeneity of geomaterials, comprising:
identifying a core section from a first well within a field;
obtaining the core section from the first well;
obtaining a continuous measurement of the core section;
overlaying the continuous measurement with a portion of a log response for the first well to obtain an overlay;
associating an observation with the overlay to obtain an integrated overlay;
analyzing the integrated overlay to determine a heterogeneity of the core section;
identifying a location in the core section from which to obtain a sample based on the heterogeneity;
obtaining the sample from the core section;
analyzing the integrated overlay based on the sample to obtain an analysis result;
developing a continuous model for the first well using the log response and the analysis result; and
presenting the continuous model.

### Claim 2 (depends on 1)

The method of claim 1, further comprising:
predicting a material property for a second well in the field using the continuous model.

### Claim 3 (depends on 1)

The method of claim 1, wherein the observation comprises geologic properties.

### Claim 4 (depends on 1)

The method of claim 1, wherein the observation comprises petrologic properties.

### Claim 5 (depends on 1)

The method of claim 1, wherein the observation comprises a visual representation of the core section.

### Claim 6 (depends on 1)

The method of claim 1, wherein identifying the core section comprises:
obtaining a log response for a second well in the field; and
performing a cluster analysis on the log response for the second well to identify a cluster for which continuous measurement is required, wherein the core section is associated with the cluster.

### Claim 7 (depends on 1)

The method of claim 1, wherein analyzing the integrated overlay based on the sample to obtain the analysis result comprises:
performing discrete measurements of the sample;
updating the integrated overlay based on the discrete measurements; and
performing a statistical analysis of the updated integrated overlay to obtain the analysis result.

### Claim 8 (depends on 1)

The method of claim 1, wherein obtaining the continuous measurement of the core section comprises analyzing a composition of the core sample and a texture of the core sample, and wherein the analysis is presented on a ternary diagram.

### Claim 9 (depends on 8)

The method of claim 8, wherein results of the analysis of the texture of the core sample comprises information associated with grain size distribution.

### Claim 10 (depends on 8)

The method of claim 8, wherein results of the analysis of the texture of the core sample comprises information associated with bed boundaries.

### Claim 11 (depends on 8)

The method of claim 8, wherein results of the analysis of the texture of the core sample comprises information associated with distance between beds.

### Claim 12 (depends on 1)

The method of claim 1, wherein overlaying the continuous measurement with the portion of the log response comprises:
determining a common scale based on the log response; and
scaling the continuous measurement to the common scale prior to generate the integrated overlay.

### Claim 13 (depends on 1)

The method of claim 1, wherein the continuous measurement is used to measure fracture characteristics in the core sample.

### Claim 14 (depends on 1)

The method of claim 1, wherein the continuous measurement is conducted under a simulated in-situ condition.

### Claim 15

A computer readable medium comprising instructions executable by a processor to perform a method, the method comprising:
identifying a core section from a well within a field;
obtaining the core section from the well;
obtaining a continuous measurement of the core section;
overlaying the continuous measurement with a first log response for the core section to obtain an overlay;
associating an observation with the overlay to obtain a first integrated overlay;
comparing the first log response with a second log response for the core section;
determining that the second log response more accurately characterizes the core section;
repeating the overlaying and associating using the second log response to obtain a second integrated overlay;
analyzing the second integrated overlay to identify a location in the core section from which to obtain a sample;
obtaining the sample from the core section;
analyzing the sample to obtain an analysis result; and
developing a model for the field using the analysis result.

### Claim 16 (depends on 15)

The computer readable medium of claim 15, wherein the second log response for the core section is obtained by using a relationship between a log response for the well and a depth of the core section.

### Claim 17

A device for determining heterogeneity of a core section, comprising:
means for performing a first pass over of the core section to obtain continuous measurements of the core section;
means for combining the continuous measurements with a log response and an observation to obtain an integrated overlay, the observation associated with data related to the core section;
means for identifying locations within the core section from which to obtain samples using the integrated overlay; and
means for obtaining the samples using the identified locations during a second pass over the core section, the samples selected to provide information associated with heterogeneous portions of the core section.

### Claim 18 (depends on 17)

The device of claim 17, further comprising:
means for developing a model of the core section based on the analysis of the sample, wherein the model defines a material property for each of the heterogeneous portions of the core section.

### Claim 19 (depends on 17)

The device of claim 17, further comprising:
means for evaluating the validity of a cluster analysis, wherein the cluster analysis is used to identify the core section is to be obtained for analysis using continuous measurements.

### Claim 20 (depends on 17)

The device of claim 17, further comprising:
a display means for presenting the integrated overlay.
