Downhole intervention operation optimization

Patent metadata

Field	Value
Publication number	US-10480311-B2
Application number	US-201715638792-A
Country	US
Kind code	B2
Filing date	Jun 30, 2017
Priority date	Jun 30, 2017
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

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.

First claim

What is claimed is:

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.

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

3. 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.

4. 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.

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

6. 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.

7. 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.

8. 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.

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

10. 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.

11. 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.

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

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

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.

15. 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.

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

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

18. 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.

19. 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.

20. 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.

Assignees

• Stolyarov Sergey
• Kotov Sergey
• Bruns Alex
• Gadzhimirzaev David
• Walles Frank
• Baker Hughes A Ge Co Llc

Inventors

• Stolyarov Sergey
• Kotov Sergey
• Bruns Alex
• Gadzhimirzaev David
• Walles Frank

Classifications

• E21B44/005

  Below-ground automatic control systems · CPC title

• E21B43/14

  Obtaining from a multiple-zone well · CPC title

• E21B47/091 Primary

  Fixed Constructions · mapped topic

• E21B47/12

  Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling · CPC title

• E21B47/18 Primary

  through the well fluid {, e.g. mud pressure pulse telemetry} · CPC title