# US 10,480,311 B2 · Downhole intervention operation optimization

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- Number: US 10,480,311 B2
- Document ID: US10480311B2
- Status: Granted
- Kind: B2
- Application number: 15/638,792
- Filed: 2017-06-30
- Published: 2019-01-03
- Granted: 2019-11-19
- Earliest claimed: 2017-06-30
- Assignees: Baker Hughes, A Ge Company, LLC
- Applicants: Sergey Stolyarov; Sergey Kotov; Alex Bruns; David Gadzhimirzaev; Frank Walles
- Inventors: Sergey Stolyarov; Sergey Kotov; Alex Bruns; David Gadzhimirzaev; Frank Walles
- Web page: https://patentgrep.com/patent/US10480311B2

## CPC

- E21B 47/18: through the well fluid {, e.g. mud pressure pulse telemetry}
- E21B 43/14: Obtaining from a multiple-zone well
- E21B 44/005: {Below-ground automatic control systems}
- E21B 47/095: by detecting an acoustic anomalies, e.g. using mud-pressure pulses
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

## Abstract

Methods and systems for generating intervention programs for a downhole formation including collecting mud-logging data during a drilling operation, wherein the drilling operation forms a borehole through the formation, generating zone characterization of one or more zones along the borehole based on the collected mud-logging data, defining targeted zones of the one or more zones along the borehole, generating a treatment characterization for each targeted zone based on the collected mud-logging data, and generating an intervention treatment design based on the targeted zones and associated treatment characterizations.

## Claims

### Claim 1

A method performed by a system for generating an intervention program for a downhole formation, the system having a drill string operable within the downhole formation to drill a borehole through the formation, and a control unit arranged to control the drill string and configure to perform method steps, the method comprising:
collecting mud-gas ratio data during a drilling operation, wherein the drilling operation forms a borehole through the formation;
generating zone characterization of one or more zones along the borehole based on the collected mud-gas ratio data;
defining targeted zones of the one or more zones along the borehole;
generating a treatment characterization for each targeted zone based on the collected mud-gas ratio data; and
generating an intervention treatment design based on the targeted zones and associated treatment characterizations.

### Claim 2 (depends on 1)

The method of claim 1, further comprising performing an intervention operation based on the intervention treatment design.

### Claim 3 (depends on 2)

The method of claim 2, wherein the intervention operation is one of an acidizing operation, a fracturing operation, or a non-acid mud removal treatment.

### Claim 4 (depends on 1)

The method of claim 1, wherein each zone within the formation has a unique geologic property and wherein the treatment characterization is based on the geologic property of the respective targeted zone.

### Claim 5 (depends on 4)

The method of claim 4, wherein the geologic property comprises as least one of porosity, permeability, density, rock property, and fluid property.

### Claim 6 (depends on 1)

The method of claim 1, wherein the zone characterization comprises at least one of information related to mineralogy, elements, solubility, compatibility, permeability, natural fractures, saturation, and rock mechanical properties.

### Claim 7 (depends on 1)

The method of claim 1, wherein the mud-gas ratio data is obtained from at least one of gas and fluids generated during the drilling operation, cuttings from the drilling operation, and drilling data associated with the drilling operation.

### Claim 8 (depends on 7)

The method of claim 7, wherein the gas and fluids portion of the mud-gas ratio data includes volumetrics indications, permeability indications, saturations indications, and porosity indications.

### Claim 9 (depends on 7)

The method of claim 7, wherein the cuttings portion of the mud-gas ratio data includes mineralogy, element quantification, clay expandability, and rock texture.

### Claim 10 (depends on 7)

The method of claim 7, wherein the drilling data portion of the mud-gas ratio data includes rate of penetration, hole size, mud weight, and fluid type.

### Claim 11 (depends on 1)

The method of claim 1, wherein intervention treatment design comprises a plurality of stages, wherein each stage is associated with a targeted zone, the plurality of stages arranged to perform an intervention operation on the associated targeted zone.

### Claim 12 (depends on 10)

The method of claim 10, wherein each stage has a length equal to a length of the associated targeted zone.

### Claim 13 (depends on 10)

The method of claim 10, wherein each stage is designed based on the zone characterization of the associated targeted zone.

### Claim 14

A system for generating an intervention program for a downhole formation, the system comprising:
a drill string operable within the downhole formation to drill a borehole through the formation; and
a control unit arranged to control the drill string and configured to:
collect mud-gas ratio data during a drilling operation;
generate zone characterization of one or more zones along the borehole based on the collected mud-gas ratio data;
define targeted zones of the one or more zones along the borehole;
generate a treatment characterization for each targeted zone based on the collected mud-gas ratio data; and
generate an intervention treatment design based on the targeted zones and associated treatment characterizations.

### Claim 15 (depends on 14)

The system of claim 14, wherein intervention treatment design comprises a plurality of stages, wherein each stage is associated with a targeted zone, the plurality of stages arranged to perform an intervention operation on the associated targeted zone.

### Claim 16 (depends on 15)

The system of claim 15, wherein each stage has a length equal to a length of the associated targeted zone.

### Claim 17 (depends on 15)

The system of claim 15, wherein each stage is designed based on the zone characterization of the associated targeted zone.

### Claim 18 (depends on 14)

The system of claim 14, wherein each zone within the formation has a unique geologic property and wherein the treatment characterization is based on the geologic property of the respective targeted zone.

### Claim 19 (depends on 14)

The system of claim 14, wherein the zone characterization comprises at least one of information related to mineralogy, elements, solubility, compatibility, permeability, natural fractures, saturation, and rock mechanical properties.

### Claim 20 (depends on 14)

The system of claim 14, wherein the mud-gas ratio data is obtained from at least one of gas and fluids generated during the drilling operation, cuttings from the drilling operation, and drilling data associated with the drilling operation.
