Expansion agents for cement compositions

Patent metadata

Field	Value
Publication number	US-11499084-B2
Application number	US-201816609252-A
Country	US
Kind code	B2
Filing date	Dec 3, 2018
Priority date	Dec 3, 2018
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

Expansive cement compositions for use in subterranean wellbores that include a monophase amorphous hydraulic binder material (MAHBM). The MAHBM may include a plurality of particles having a silica core and an amorphous coating substantially surrounding the silica core. The coating may comprise, for example, a plurality of amorphous α-dicalcium silicate hydrate nanoparticles or microparticles. The MAHBM may be used as an expansion agent in a cement composition or used as an expansive cement by itself.

First claim

What is claimed is:

1. An expansive cement composition for use in a subterranean wellbore comprising:
a monophase amorphous hydraulic binder material (MAHBM);
hydraulic cement; and
water;
wherein the MAHBM comprises a plurality of particles having a silica core and a coating substantially surrounding the silica core, wherein the coating comprises a material selected from the group consisting of amorphous α-dicalcium silicate hydrate (α-C 2 SH), amorphous tricalcium silicate (C 3 S), amorphous dicalcium silicate (C 2 S), amorphous tricalcium aluminate (C 3 A), amorphous tricalcium silicate hydrate (C 3 SH), amorphous dicalcium silicate hydrate (C 2 SH), amorphous tricalcium aluminate hydrate (C 3 AH), and any combination thereof;
wherein the expansive cement composition comprises from about 5% to about 70% MAHBM by weight.

2. The expansive cement composition according to claim 1 , wherein the silica core comprises one or more particles of a material selected from the group consisting of crystalline silica, quartz, volcanic glass, diatomaceous earth, fly ash or other silica-based waste materials, bio ash, amorphous silica, and any combination thereof.

3. The expansive cement composition according to claim 1 , wherein the coating comprises a plurality of amorphous α-dicalcium silicate hydrate nanoparticles or microparticles; and wherein the silica core is characterized by a particle size of from about 5 μm to about 500 μm.

4. The expansive cement composition according to claim 1 , wherein the expansive cement composition comprises from about 1% to about 70% by weight hydraulic cement and from about 25% to about 80% by weight water.

5. A method of preparing a reduced shrinkage cement composition for use in a subterranean wellbore, the method comprising:
providing a cement composition comprising a hydraulic cement;
adding an expansive agent to the cement composition to form a reduced shrinkage cement composition, the expansive agent comprising a monophase amorphous hydraulic binder material (MAHBM);
wherein the MAHBM comprises a plurality of particles having a silica core and a coating substantially surrounding the silica core, wherein the coating comprises a material selected from the group consisting of amorphous α-dicalcium silicate hydrate (α-C 2 SH), amorphous tricalcium silicate (C 3 S), amorphous dicalcium silicate (C 2 S), amorphous tricalcium aluminate (C 3 A), amorphous tricalcium silicate hydrate (C 3 SH), amorphous dicalcium silicate hydrate (C 2 SH), amorphous tricalcium aluminate hydrate (C 3 AH), and any combination thereof;
wherein the expansive cement composition comprises from about 5% to about 70% MAHBM by weight.

6. The method according to claim 5 , wherein the MAHBM is the only expansive agent added to the cement composition.

7. The method according to claim 5 , further comprising introducing the cement composition into a subterranean wellbore.

8. The method according to claim 5 , further comprising:
introducing the cement composition into an annulus between a casing and a wall of the wellbore; and
allowing the cement composition to set.

9. The method according to claim 5 , wherein the cement composition comprises the hydraulic cement and water sufficient to form a slurry, the method further comprising introducing the cement composition into the wellbore using one or more pumps.

10. A method of conducting a cementing operation in a subterranean wellbore using an expansive cement, the method comprising:
providing a cement composition comprising a monophase amorphous hydraulic binder material (MAHBM) and a hydraulic cement; and
introducing the cement composition into a wellbore; and
allowing the cement composition to cure to form a cured cement composition;
wherein the cured cement composition has an expanded volume as compared to the introduced cement composition;
wherein the MAHBM comprises a plurality of particles having a silica core and a coating substantially surrounding the silica core, wherein the coating comprises a material selected from the group consisting of amorphous α-dicalcium silicate hydrate (α-C 2 SH), amorphous tricalcium silicate (C 3 S), amorphous dicalcium silicate (C 2 S), amorphous tricalcium aluminate (C 3 A), amorphous tricalcium silicate hydrate (C 3 SH), amorphous dicalcium silicate hydrate (C 2 SH), amorphous tricalcium aluminate hydrate (C 3 AH), and any combination thereof;
wherein the expansive cement composition comprises from about 5% to about 70% MAHBM by weight.

Assignees

• Halliburton Energy Services Inc

Inventors

• Pearl Jr William Cecil
• Lewis Samuel Jason
• Pisklak Thomas Jason
• Ruiz Stephanie
• Jones Paul Joseph

Classifications

• C09K8/46 Primary

  containing inorganic binders, e.g. Portland cement · CPC title

• C04B2111/00146

  Sprayable or pumpable mixtures · CPC title

• Y02W30/91

  Use of waste materials as fillers for mortars or concrete · CPC title

• C04B22/08

  Acids or salts thereof {(C04B22/0013 takes precedence)} · CPC title

• E21B33/14

  for cementing casings into boreholes · CPC title