# US 2020/0399989 A1 · Evaluating hydraulic fracturing breakdown effectiveness

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- Number: US 2020/0399989 A1
- Document ID: US20200399989A1
- Status: Published application
- Kind: A1
- Application number: 16/448,993
- Filed: 2019-06-21
- Published: 2020-12-24
- Earliest claimed: 2019-06-21
- Assignees: Halliburton Energy Services, Inc.
- Applicants: Halliburton Energy Services, Inc.
- Inventors: Vladimir Nikolayevich Martysevich; Ronald Glen Dusterhoft; Jianfu Ma
- Web page: https://patentgrep.com/patent/US20200399989A1

## CPC

- E21B 41/00: Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B 43/26: by forming crevices or fractures
- E21B 44/00: Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
- G01V 20/00: Geomodelling in general
- E21B 2200/20: Computer models or simulations, e.g. for reservoirs under production, drill bits
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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

The disclosure improves the analysis of the hydraulic fracturing (HF) break down process of a well system. The analysis can use as inputs collected HF data such as the HF fluid pressure, HF fluid flow rate, and HF fluid composition over one or more time intervals. In some aspects, the perforation parameters and stratigraphic well placement can also be used as inputs. The analysis can also use as inputs the HF model inputs that were used in collecting the HF data. The analysis can determine an effectiveness parameter of the received inputs. HF model inputs can be selected that would best fit a HF job plan goal for the current well system. In some aspects, the HF model inputs can be communicated to a well system controller of the current well system to further direct HF job plan operations.

## Claims

### Claim 1

A method to determine a hydraulic fracturing (HF) job plan for a current well system, comprising:
receiving HF data and corresponding HF model inputs for one or more previous well systems, wherein the previous well systems contain a similar subterranean formation as the current well system, and wherein the HF model inputs include, over a time interval, at least one of a HF fluid pressure, a HF fluid flow rate, and a HF fluid composition;
calculating a fitted function utilizing an analysis of a HF breakdown within each of the previous well systems utilizing the HF data;
computing an effectiveness parameter for each of the fitted functions and the HF model inputs;
selecting HF model inputs utilizing the effectiveness parameter; and
modifying the HF job plan utilizing the HF model inputs.

### Claim 2 (depends on 1)

The method as recited in claim 1, wherein the HF data is from one or more of a data source and the current well system.

### Claim 3 (depends on 1)

The method as recited in claim 1, wherein the HF job plan specifies the HF fluid pressure, the HF fluid flow rate, and the HF fluid composition for the current well system.

### Claim 4 (depends on 1)

The method as recited in claim 1, wherein the fitted function is a linear function and the effectiveness parameter utilizes a slope of the linear function, and an area defined by the linear function and the HF data.

### Claim 5 (depends on 1)

The method as recited in claim 1, wherein the HF model inputs further include perforation locations and stratigraphic well placement of each well system.

### Claim 6 (depends on 1)

The method as recited in claim 1, wherein the method is executed after a HF job stage of the current well system, and the HF data for the previous well systems is the HF data from a previous HF job stage of the current well system.

### Claim 7 (depends on 1)

The method as recited in claim 1, wherein the HF job plan specifies the HF fluid pressure and the HF fluid flow rate over one or more intervals of time.

### Claim 8 (depends on 1)

The method as recited in claim 1, further comprising:
executing the HF job plan as a HF treatment stage on the current well system.

### Claim 9

A computer program product having a series of operating instructions stored on a non-transitory computer-readable medium that directs a data processing apparatus when executed thereby to determine a hydraulic fracturing (HF) job plan for a current well system, the operations comprising:
receiving HF data and corresponding HF model inputs for one or more previous well systems, wherein the previous well systems contain a similar subterranean formation as the current well system, and wherein the HF model inputs include, over a time interval, at least one of a HF fluid pressure, a HF fluid flow rate, and a HF fluid composition;
calculating a fitted function utilizing an analysis of a HF breakdown within each of the previous well systems utilizing the HF data;
computing an effectiveness parameter for each of the fitted functions and the HF model inputs; and
selecting HF model inputs to be utilized by the HF job plan, utilizing the effectiveness parameter.

### Claim 10 (depends on 9)

The computer program product as recited in claim 9, wherein the HF data is from one or more of a data source and the current well system.

### Claim 11 (depends on 9)

The computer program product as recited in claim 9, wherein the HF job plan specifies the HF fluid pressure, the HF fluid flow rate, and the HF fluid composition for the current well system.

### Claim 12 (depends on 9)

The computer program product as recited in claim 9, wherein the fitted function is a linear function and the effectiveness parameter utilizes a slope of the linear function, and an area defined by the linear function and the HF data.

### Claim 13 (depends on 9)

The computer program product as recited in claim 9, wherein the HF model inputs further include perforation locations and stratigraphic well placement of each well system.

### Claim 14 (depends on 9)

The computer program product as recited in claim 9, wherein the operations are executed after a HF job stage of the current well system, and the HF data for the previous well systems is the HF data from a previous HF job stage of the current well system.

### Claim 15 (depends on 9)

The computer program product as recited in claim 9, wherein the HF job plan specifies the HF fluid pressure and the HF fluid flow rate over one or more intervals of time.

### Claim 16 (depends on 9)

The computer program product as recited in claim 9, further comprising:
modifying the HF job plan utilizing the HF model inputs; and
executing the HF job plan as a HF treatment stage on the current well system.

### Claim 17

A system to provide hydraulic fracturing (HF) model inputs into a HF job plan, comprising:
a receiver, operable to receive one or more sets of HF data and corresponding HF model inputs for one or more previous well systems; and
a HF breakdown analyzer, operable to analyze each set of HF data to calculate a fitted function, to compute an effectiveness parameter utilizing the fitted function and the corresponding HF model inputs, and to select the set of HF data that has the effectiveness parameter closest to a goal of the HF job plan.

### Claim 18 (depends on 17)

The system as recited in claim 17, further comprising:
a communicator, operable to transmit the selected set of HF data and the corresponding HF model inputs.

### Claim 19 (depends on 18)

The system as recited in claim 18, further comprising:
a well site controller, operable to receive the corresponding HF model inputs and to adjust a subsequent HF job treatment stage for a current well system.

### Claim 20 (depends on 18)

The system as recited in claim 18, wherein the HF data from the previous well systems is a completed HF treatment stage of a current well system.