Settable cement compositions for terminating water flow and associated methods

Patent metadata

Field	Value
Publication number	US-10023498-B2
Application number	US-201415505268-A
Country	US
Kind code	B2
Filing date	Oct 16, 2014
Priority date	Oct 16, 2014
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

Compositions and methods for terminating water flow in a subterranean formation are described. The compositions include a calcium aluminate cement, a Portland cement, a non-aqueous carrier fluid, and a polyphosphate. The cement compositions, upon making contact with water, form a viscous gel that sets into a hardened mass with extraordinary compressive strengths in a short period of time.

First claim

What is claimed is:

1. A settable cement composition consisting essentially of:
a calcium aluminate cement;
a Portland cement;
a non-aqueous carrier fluid; and
a polyphosphate.

2. The settable cement composition of claim 1 , wherein the calcium aluminate cement is present in a range of about 25 to 75 percent by weight of the composition, the Portland cement is present in a range of about 0.1 to 10 percent by weight of the composition, the non-aqueous carrier fluid is present in a range of about 25 to 75 percent by weight of the composition, or the polyphosphate is present in a range of about 1 to 20 percent by weight of the composition, or any combination thereof.

3. The settable cement composition of claim 1 , wherein the non-aqueous carrier fluid comprises a hydrocarbon fluid.

4. The settable cement composition of claim 3 , wherein the hydrocarbon fluid comprises diesel oil.

5. The settable cement composition of claim 1 , wherein the polyphosphate is selected from sodium hexametaphosphate, tripolyphosphate, orthophosphate, sodium hydrogen phosphate, and sodium dihydrogen phosphate.

6. A cured cement composition having a compressive strength greater than about 200 psi comprising the settable cement composition of claim 1 , after curing at ambient temperature and pressure for about 30 minutes.

7. A cured cement composition having a compressive strength greater than about 2000 psi comprising the settable cement composition of claim 1 , after curing at ambient temperature and pressure for about 24 hours.

8. A settable cement composition consisting essentially of:
a calcium aluminate cement;
sodium hexametaphosphate;
a Portland cement; and
diesel oil.

9. The settable cement composition of claim 8 , wherein the calcium aluminate cement is present in a range of about 25 to 75 percent by weight of the composition, the sodium hexametaphosphate is present in a range of about 1 to 20 percent by weight of the composition, the Portland cement is present in a range of about 0.1 to 10 percent by weight of the composition, or the diesel oil is present in a range of about 25 to 75 percent by weight of the composition, or any combination thereof.

10. A method of terminating water flow in a subterranean formation comprising:
preparing a cement composition consisting essentially of a calcium aluminate cement, a polyphosphate, a Portland cement, and a non-aqueous carrier fluid;
introducing the cement composition into the subterranean formation; and
contacting the cement composition with an aqueous fluid to initiate an immediate gelation of the cement composition.

11. The method of claim 10 , wherein the calcium aluminate cement is present in a range of about 25 to 75 percent by weight of the composition, the Portland cement is present in a range of about 0.1 to 10 percent by weight of the composition, the non-aqueous carrier fluid is present in a range of about 25 to 75 percent by weight of the composition, or the polyphosphate is present in a range of about 1 to 20 percent by weight of the composition, or any combination thereof.

12. The method of claim 10 , further comprising curing the cement composition at ambient temperature and pressure for about 30 minutes to provide a cured cement composition having a compressive strength greater than about 200 psi.

13. The method of claim 10 , further comprising curing the cement composition at ambient temperature and pressure for about 24 hours to provide a cured cement composition having a compressive strength greater than about 2000 psi.

14. A cured cement composition having a compressive strength greater than about 100 psi comprising the settable cement composition of claim 1 , after curing at ambient temperature and pressure for about 30 minutes to one hour.

15. A cured cement composition having a compressive strength greater than about 500 psi comprising the settable cement composition of claim 1 , after curing at ambient temperature and pressure for about 24 to 48 hours.

16. A cured cement composition having a compressive strength greater than about 1000 psi comprising the settable cement composition of claim 1 , after curing at ambient temperature and pressure for about 7 days.

17. A cured cement composition having a compressive strength greater than about 200 psi comprising the settable cement composition of claim 8 , after curing at ambient temperature and pressure for about 30 minutes.

18. A cured cement composition having a compressive strength greater than about 2000 psi comprising the settable cement composition of claim 8 , after curing at ambient temperature and pressure for about 24 hours.

19. A cured cement composition having a compressive strength greater than about 500 psi comprising the settable cement composition of claim 8 , after curing at ambient temperature and pressure for about 24 to 48 hours.

20. A cured cement composition having a compressive strength greater than about 1000 psi comprising the settable cement composition of claim 8 , after curing at ambient temperature and pressure for about 7 days.

Assignees

• Halliburton Energy Services Inc
• Halliburton Energy Services Inc

Inventors

• Agapiou Kyriacos
• Pisklak Thomas J
• Eoff Larry

Classifications

• C04B2111/00043

  Anhydrous mixtures · CPC title

• C04B28/06 Primary

  Aluminous cements (monolithic refractories or refractory mortars C04B35/66) · CPC title

• C04B2103/40

  Surface-active agents, dispersants · CPC title

• C04B2111/00991

  for testing · CPC title

• C09K8/487

  Fluid loss control additives; Additives for reducing or preventing circulation loss · CPC title