Lost circulation materials comprising cane ash

Patent metadata

Field	Value
Publication number	US-10119060-B2
Application number	US-201515540556-A
Country	US
Kind code	B2
Filing date	Jan 30, 2015
Priority date	Jan 30, 2015
Publication date	Nov 6, 2018
Grant date	Nov 6, 2018

Abstract

A method for reducing lost circulation in a subterranean formation. The method includes providing a treatment fluid comprising a base fluid and a lost circulation material comprising cane ash. The treatment fluid is introduced into a wellbore within the subterranean formation such that at least a portion of the cane ash bridges openings in the subterranean formation to reduce loss of fluid circulation into the subterranean formation.

First claim

What is claimed is:

1. A method for reducing lost circulation in a subterranean formation, the method comprising:
providing a treatment fluid, wherein the treatment fluid is a cement composition comprising a cement, water, and a lost circulation material comprising cane ash;
introducing the treatment fluid into a wellbore within the subterranean formation such that at least a portion of the cane ash bridges openings in the subterranean formation to reduce loss of fluid circulation into the subterranean formation; and
allowing the treatment fluid to set in the wellbore.

2. A method according to claim 1 wherein the cane ash is derived from burning bagasse.

3. A method according to claim 1 wherein the cane ash comprises at least 70% quartz.

4. A method according to claim 1 wherein the cane ash has a median particle size between about 20 μm and about 100 μm.

5. A method according to claim 1 wherein the cane ash comprises particles with a particle diameter of less than 8 μm.

6. A method according to claim 1 wherein the cane ash is placed into a lost circulation zone disposed within the subterranean formation.

7. A method according to claim 1 , wherein at least a portion of cane ash is in the form of fibers.

8. A method according to claim 7 , wherein fibers are present in cane ash in an amount of about at least 20% by weight of cane ash with an aspect ratio of about at least 5.

9. A method according to claim 1 , wherein cane ash has a multi-modal particle size distribution.

10. A method according to claim 9 , wherein cane ash has about at least 3 or more modal peaks.

11. A treatment fluid comprising:
a cement composition comprising:
a cement,
water, and
a lost circulation material comprising cane ash, wherein the cane ash comprises at least 70% quartz.

12. A treatment fluid according to claim 11 wherein the cane ash is derived from burning bagasse.

13. A treatment fluid according to claim 11 wherein the cane ash has a median particle size between about 20 μm and about 100 μm.

14. A treatment fluid according to claim 11 wherein the cane ash comprises particles with a particle diameter of less than 8 μm.

15. The treatment fluid of claim 11 , wherein fibers are present in cane ash in an amount of about at least 5% by weight of cane ash with an aspect ratio of about at least 1.

16. The treatment fluid of claim 15 , wherein cane ash has a multi-modal particle size distribution with at least 3 or more modal peaks.

17. A system for bridging a lost circulation zone comprising:
a treatment fluid, wherein the treatment fluid is a cement composition comprising a cement, water, and a lost circulation material comprising cane ash, wherein at least a portion of cane ash is in the form of fibers, wherein fibers are present in cane ash in an amount of about at least 5% by weight of cane ash with aspect ratio of about at least 1;
a fluid handling system comprising the treatment fluid; and
a conduit at least partially disposed within the wellbore and fluidically coupled to the fluid handling system.

18. A system according to claim 17 wherein the cane ash is derived from burning bagasse.

19. The method according to claim 17 , wherein the fibers are present in cane ash in an amount of about at least 20% by weight of cane ash with an aspect ratio of about at least 5.

20. The method of claim 17 , wherein cane ash has a multi-modal particle size distribution with at least 3 or more modal peaks.

Assignees

• Halliburton Energy Services Inc

Inventors

• Pisklak Thomas Jason
• Agapiou Kyriacos
• Brenneis Darrell Chad
• Benkley James Robert
• Chatterji Jiten

Classifications

• C04B18/101

  Burned rice husks or other burned vegetable material · CPC title

• C04B28/04

  Portland cements · CPC title

• C09K8/467

  containing additives for specific purposes · CPC title

• C04B24/36

  Bituminous materials, e.g. tar, pitch {(C04B24/243 takes precedence)} · CPC title

• C09K8/032 Primary

  Inorganic additives · CPC title