# US 10,119,060 B2 · Lost circulation materials comprising cane ash

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,119,060 B2
- Document ID: US10119060B2
- Status: Granted
- Kind: B2
- Application number: 15/540,556
- Filed: 2015-01-30
- Published: 2017-12-28
- Granted: 2018-11-06
- Earliest claimed: 2015-01-30
- Assignees: Halliburton Energy Services, Inc.
- Applicants: Halliburton Energy Services, Inc.
- Inventors: Thomas Jason Pisklak; Kyriacos Agapiou; Darrell Chad Brenneis; James Robert Benkley; Jiten Chatterji
- Web page: https://patentgrep.com/patent/US10119060B2

## CPC

- C09K 8/032: {Inorganic additives}
- C04B 18/101: {Burned rice husks or other burned vegetable material}
- C04B 28/02: containing hydraulic cements other than calcium sulfates
- C04B 28/04: Portland cements
- C09K 8/02: Well-drilling compositions
- C09K 8/42: Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells (compositions for plastering C09K8/50)
- C09K 8/467: containing additives for specific purposes
- C09K 8/501: {using spacer compositions}
- C09K 8/502: Oil-based compositions
- C09K 8/601: {using spacer compositions}
- C09K 8/64: Oil-based compositions
- E21B 21/003: {Means for stopping loss of drilling fluid (plastering the borehole wall E21B33/138)}
- E21B 33/138: Plastering the borehole wall; Injecting into the formation
- Y02W 30/91: Use of waste materials as fillers for mortars or concrete
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT

## 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.

## Claims

### Claim 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.

### Claim 2 (depends on 1)

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

### Claim 3 (depends on 1)

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

### Claim 4 (depends on 1)

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

### Claim 5 (depends on 1)

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

### Claim 6 (depends on 1)

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

### Claim 7 (depends on 1)

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

### Claim 8 (depends on 7)

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.

### Claim 9 (depends on 1)

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

### Claim 10 (depends on 9)

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

### Claim 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.

### Claim 12 (depends on 11)

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

### Claim 13 (depends on 11)

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

### Claim 14 (depends on 11)

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

### Claim 15 (depends on 11)

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.

### Claim 16 (depends on 15)

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

### Claim 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.

### Claim 18 (depends on 17)

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

### Claim 19 (depends on 17)

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.

### Claim 20 (depends on 17)

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