Cement compositions and methods utilizing nano-hydraulic cement
An exemplary method includes introducing a treatment fluid comprising nano-hydraulic cement into a subterranean formation. The treatment fluid may include a drilling fluid, a completion fluid, a stimulation fluid, a well clean-up fluid or a cement composition. Another example method comprises introducing a cement composition comprising nano-hydraulic cement, hydraulic cement, and water into a subterranean formation; and allowing the cementing composition to set in the subterranean formation. An example well treatment fluid comprises nano-hydraulic cement.
1. A method of primary cementing in a subterranean formation comprising:
introducing a cement composition comprising nano-hydraulic cementitious particles and water into the subterranean formation, wherein the water is present in an amount between about 33% to about 200% of the cement composition, wherein the nano-hydraulic cementitious particles have a mean particle size of between about 20 nanometers to about 100 nanometers, the nano-hydraulic cementitious particles being selected from the group consisting of a Portland cement, a pozzolanic cement, a gypsum cement, a soil cement, a calcium phosphate cement, a high-alumina content cement, a silica cement, a high-alkalinity cement, and any combination thereof; and
allowing the cement composition to set in the subterranean formation by reaction of the nano-hydraulic cementitious particles and the hydraulic cement with the water to form a hardened mass in a space between the subterranean formation and a pipe string.
2. The method of claim 1 wherein the nano-hydraulic cementitious particles comprises the pozzolanic cement.
3. The method of claim 1 wherein the nano-hydraulic cementitious particles comprises the Portland cement.
4. The method of claim 1 wherein the cement composition further comprises at least one nano-particle selected from the group consisting of nano-silica, nano-clay, nano-alumina, nano-zinc oxide, nano-boron, nano-iron oxide, and any combination thereof.
5. The method of claim 1 wherein the cement composition further comprises a nano-clay.
6. The method of claim 1 wherein the cement composition further comprises a swellable particle.
7. The method of claim 1 wherein the cement composition further comprises micro-fine slag.
8. The method of claim 1 wherein the cement composition further comprises micro-fine cement having a mean particle size of less than about 30 microns, but larger than 1 micron.
9. The method of claim 1 wherein the cement composition comprises cement kiln dust.
10. The method of claim 1 wherein the cement composition comprises at least one additive selected from the group consisting of fly ash, shale, slag, zeolite, metakaolin, and any combination thereof.
11. The method of claim 1 wherein the cement composition is foamed.
12. The method of claim 1 comprising maximizing a packing volume fraction in the cement composition.
13. The method of claim 1 further comprising providing the nano-hydraulic cementitious particles, wherein at least of a portion of the nano-hydraulic cementitious particles as provided is contained or encapsulated in a degradable material.
14. The method of claim 1 wherein the nano-hydraulic cement particles are is present in the cement composition in an amount of about 1% to about 25% by weight of cementitious material.
15. A method of primary cementing in a subterranean formation comprising:
providing nano-hydraulic cementitious particles, selected from the group consisting of a Portland cement, a pozzolanic cement, a gypsum cement, a soil cement, a calcium phosphate cement, a high-alumina content cement, a silica cement, a high-alkalinity cement, and any combination thereof, wherein the nano-hydraulic cementitious particles have a mean particle size between about 20 nanometers to about 100 nanometers; wherein the nano-hydraulic cementitious particles are present in an amount of about 0.1% to 50% by weight of cementitious components;
providing hydraulic cement having a mean particle size of greater than 1 micron; wherein the hydraulic cement is present in an amount of about 1% to 99% by weight of cementitious components;
preparing a cement composition comprising the nano-hydraulic cementitious particles, the hydraulic cement, and water, wherein the water is present in an amount between about 33% to about 200% of the nano-hydraulic cement particles;
introducing the cement composition into the subterranean formation; and
allowing the cement composition to set in the subterranean formation by reaction of the nano-hydraulic cementitious particles and hydraulic cement with the water to form a hardened mass in a space between the subterranean formation and a pipe string.
16. The method of claim 15 wherein the nano-hydraulic cementitious particles have a mean particle size of less than about 50 nanometers.
17. The method of claim 15 wherein the nano-hydraulic cementitious particles are present in an amount of about 1% to about 25% by weight of cementitious components.
18. The method of claim 15 wherein the hydraulic cement is present in an amount of about 1% to 50% by weight of cementitious components.
19. The method of claim 15 wherein the nano-hydraulic cementitious particles comprise the Portland cement.
20. The method of claim 15 wherein the cement compositions further comprises at least one nano-particle selected from the group consisting of nano-silica, nano-clay, nano-alumina, nano-zinc oxide, nano-boron, nano-iron oxide, and any combination thereof.
21. The method of claim 15 wherein the cement composition further comprises a swellable particle.
22. The method of claim 15 wherein the hydraulic cement comprises micro-fine cement having a mean particle size of less than about 30 microns.
23. The method of claim 15 wherein the cement composition comprises cement kiln dust.