# US 10,120,089 B2 · Identifying correlations between stimulated reservoir volume parameters and fracture network parameters

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- Number: US 10,120,089 B2
- Document ID: US10120089B2
- Status: Granted
- Kind: B2
- Application number: 15/129,768
- Filed: 2014-04-30
- Published: 2017-05-11
- Granted: 2018-11-06
- Earliest claimed: 2014-04-30
- Assignees: Halliburton Energy Services, Inc.
- Applicants: Halliburton Energy Services, Inc.
- Inventors: Jianfu Ma; Avi Lin; Baidurja Ray
- Web page: https://patentgrep.com/patent/US10120089B2

## CPC

- G01V 1/288: {Event detection in seismic signals, e.g. microseismics (G01V1/36 takes precedence)}
- G01V 2210/646: Fractures
- 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

In some aspects, a stimulated reservoir volume (SRV) parameter for a stimulation treatment applied to a subterranean region is identified. A parameter of a fracture-plane network generated by application of the stimulation treatment is identified. A correlation between the SRV parameter and the fracture-plane network parameter is identified. In some implementations, the SRV and the fracture-plane network are computed based on microseismic event data associated with the stimulation treatment.

## Claims

### Claim 1

A method of analyzing a stimulation treatment of a subterranean region, the method comprising:
identifying, by operation of a computer system, a stimulated reservoir volume (SRV) parameter of a stimulation treatment applied to a subterranean region based on microseismic event data associated with the stimulation treatment;
identifying, by operation of the computer system, a fracture-plane network parameter of a fracture-plane network generated by application of the stimulation treatment based on the microseismic event data;
identifying a correlation between the SRV parameter and the fracture-plane network parameter; and
using the correlation to analyze the stimulation treatment.

### Claim 2 (depends on 1)

The method of claim 1, wherein the SRV parameter and the fracture-plane network parameter are associated with an individual stage of a multi-stage stimulation treatment of the subterranean region.

### Claim 3 (depends on 1)

The method of claim 1, further comprising identifying a stimulation effectiveness of the stimulation treatment.

### Claim 4 (depends on 1)

The method of claim 1, further comprising identifying a contribution of an individual stage of a multi-stage stimulation treatment based on a ratio of an effective SRV of the individual stage to a total effective SRV of the multi-stage stimulation treatment.

### Claim 5 (depends on 1)

The method of claim 1, wherein the SRV parameter comprises a spatial extent of the SRV, the fracture-plane network parameter comprises a spatial extent of the fracture-plane network, and identifying the correlation comprises identifying a proportionality between the spatial extent of the SRV and the spatial extent of the fracture-plane network.

### Claim 6 (depends on 5)

The method of claim 5, wherein the spatial extent of the SRV comprises a length or height of the SRV, and the spatial extent of the fracture-plane network comprises a length or height of the fracture-plane network.

### Claim 7 (depends on 1)

The method of claim 1, wherein the SRV parameter comprises a width of the SRV, the fracture-plane network parameter comprises a number of fractures in the fracture-plane network, and identifying the correlation comprises identifying a correlation between the number of fractures and the width of the SRV.

### Claim 8 (depends on 1)

The method of claim 1, wherein the SRV parameter comprises an orientation of the SRV, the fracture-plane network parameter comprises an orientation of the fracture-plane network, and identifying the correlation comprises identifying a correlation between the orientation of the SRV and the orientation of the fracture-plane network.

### Claim 9 (depends on 1)

The method of claim 1, wherein the SRV parameter comprises a fracture complexity index, the fracture-plane network parameter comprises a probability distribution of orientations of the fracture-plane network, and identifying the correlation comprises identifying a correlation between a number of peaks of the probability distribution and the fracture complexity index.

### Claim 10

A non-transitory computer-readable medium storing instructions that, when executed by data processing apparatus, cause the data processing apparatus to perform operations comprising:
identifying a stimulated reservoir volume (SRV) parameter of a stimulation treatment applied to a subterranean region based on microseismic event data associated with the stimulation treatment;
identifying a fracture-plane network parameter of a fracture-plane network generated by application of the stimulation treatment based on the microseismic event data;
identifying a correlation between the SRV parameter and the fracture-plane network parameter; and
using the correlation to analyze the stimulation treatment.

### Claim 11 (depends on 10)

The computer-readable medium of claim 10, wherein the SRV parameter comprises a spatial extent of the SRV, the fracture-plane network parameter comprises a spatial extent of the fracture-plane network, and identifying the correlation comprises identifying a proportionality between the spatial extent of the SRV and the spatial extent of the fracture-plane network.

### Claim 12 (depends on 10)

The computer-readable medium of claim 10, wherein the SRV parameter comprises a width of the SRV, the fracture-plane network parameter comprises a number of fractures in the fracture-plane network, and identifying the correlation comprises identifying a correlation between the number of fractures in the fracture-plane network and the width of the SRV.

### Claim 13 (depends on 10)

The computer-readable medium of claim 10, wherein the SRV parameter comprises an orientation of the SRV, the fracture-plane network parameter comprises an orientation of the fracture-plane network, and identifying the correlation comprises identifying a correlation between the orientation of the SRV and the orientation of the fracture-plane network.

### Claim 14 (depends on 10)

The computer-readable medium of claim 10, wherein the SRV parameter comprises a fracture complexity index, the fracture-plane network parameter comprises a probability distribution of orientations of the fracture-plane network, and identifying the correlation comprises identifying a correlation between a number of peaks of the probability distribution and the fracture complexity index.

### Claim 15

A computing system comprising
data processing apparatus; and
memory storing computer-readable instructions that, when executed by the data processing apparatus, cause the data processing apparatus to perform operations comprising:
identifying a stimulated reservoir volume (SRV) parameter of a stimulation treatment applied to a subterranean region based on microseismic event data associated with the stimulation treatment;
identifying a fracture-plane network parameter of a fracture-plane network generated by application of the stimulation treatment based on the microseismic event data;
identifying a correlation between the SRV parameter and the fracture-plane network parameter; and
using the correlation to analyze the stimulation treatment.

### Claim 16 (depends on 15)

The computing system of claim 15, the operations further comprising identifying a stimulation effectiveness of the stimulation treatment of the subterranean region.

### Claim 17 (depends on 15)

The computing system of claim 15, the operations further comprising identifying a contribution of an individual stage of a multi-stage stimulation treatment based on a ratio of an effective SRV of the individual stage to a total effective SRV of the multi-stage stimulation treatment.

### Claim 18 (depends on 15)

The computing system of claim 15, wherein the SRV parameter comprises a width of the SRV, the fracture-plane network parameter comprises a number of fractures in the fracture-plane network, and identifying the correlation comprises identifying a correlation between the number of fractures and the width of the SRV.

### Claim 19 (depends on 15)

The computing system of claim 15, wherein the SRV parameter comprises a fracture complexity index, the fracture-plane network parameter comprises a probability distribution of orientations of the fracture-plane network, identifying the correlation comprises identifying a correlation between a number of peaks of the probability distribution and the fracture complexity index, and the computing system comprises a display device operable to display a rose diagram representing the probability distribution.
