Settable compositions comprising cement kiln dust and swellable particles

• US 7,607,482 B2
• Filed: 09/11/2008
• Issued: 10/27/2009
• Est. Priority Date: 09/09/2005
• Status: Active Grant

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Chatterji, Jiten, King, Bobby J., Roddy, Craig W., Brenneis, D. Chad
• Primary Examiner(s): Marcantoni; Paul
• Application Number:
  US12/283,398
• Publication Number:
  US 20090088348A1
• Time in Patent Office: 411 Days
• Field of Search: 166/292, 166/293, 106/716
• US Class Current: 166/292
• CPC Class Codes: C04B 16/085 expanded in situ, i.e. during or after mixing the mortar, concrete or artificial stone ingredients
• CPC Class Codes: C04B 18/162 Cement kiln dust; Lime kiln dust
• CPC Class Codes: C04B 2103/0049 Water-swellable polymers
• CPC Class Codes: C04B 24/2641 Polyacrylates; Polymethacrylates
• CPC Class Codes: C04B 24/2676 Polystyrenes
• CPC Class Codes: C04B 28/04 Portland cements
• CPC Class Codes: C09K 8/426 for plugging
• CPC Class Codes: C09K 8/428 for squeeze cementing, e.g. for repairing
• CPC Class Codes: C09K 8/467 containing additives for specific purposes
• CPC Class Codes: C09K 8/473 Density reducing additives, e.g. for obtaining foamed cement compositions
• CPC Class Codes: Y02W 30/91 Use of waste materials as fillers for mortars or concrete

Abstract

A variety of methods and compositions are disclosed herein, including, in one embodiment, a method comprising: introducing a settable composition into a subterranean formation, wherein the settable composition comprises: a cementitious component comprising a hydraulic cement and cement kiln dust; a swellable particle; and water; and allowing the settable composition to set in the subterranean formation. Another embodiment comprises a settable composition comprising: a cementitious component comprising a hydraulic cement and cement kiln dust; a swellable particle; and water.

Claims

1. A method comprising:

introducing a settable composition into a subterranean formation, wherein the settable composition comprises;

a cementitious component comprising;

a hydraulic cement, and

cement kiln dust;

a swellable particle; and

water; and

allowing the settable composition to set in the subterranean formation.

2. The method of claim 1 wherein the cement kiln dust is present in the settable composition in an amount of about 25% to about 75% by weight of the cementitious component, and wherein the hydraulic cement is present in the settable composition in an amount of about 50% to about 75% by weight of the cementitious component.

3. The method of claim 1 wherein the cement kiln dust is present in the settable composition in an amount of about 25% to about 50% by weight of the cementitious component, and wherein the hydraulic cement is present in the settable composition in an amount of about 25% to about 75% by weight of the cementitious component.

4. The method of claim 1 wherein the swellable particle is present in the settable composition in an amount of about 5% to about 25% by weight of the cementitious component.

5. The method of claim 1 wherein the swellable particle is present in the settable composition in an amount of about 15% to about 20% by weight of the cementitious component.

6. The method of claim 1 wherein the swellable particle swells upon contact with an aqueous fluid.

7. The method of claim 1 wherein the swellable particle swells upon contact with oil.

8. The method of claim 1 wherein the swellable particle comprises a water-swellable polymer.

9. The method of claim 1 wherein the swellable particle comprises a swellable elastomer.

10. The method of claim 1 wherein the swellable particle comprises a block copolymer of styrene butadiene rubber.

11. The method of claim 1 wherein the swellable particle comprises a sodium salt of polyacrylic acid.

19. The method of claim 1 wherein the swellable particle comprises a sodium salt of polyacrylic acid.

12. A method comprising:

introducing a settable composition into an annulus between a pipe string and a subterranean formation, wherein the settable composition comprises;

a cementitious component comprising;

a hydraulic cement, and

cement kiln dust;

a swellable particle; and

water; and

allowing the settable composition to set in the annulus.

13. The method of claim 12 comprising introducing the pipe string into a well bore that penetrates the subterranean formation.

14. The method of claim 12 wherein the cement kiln dust is present in the settable composition in an amount of about 25% to about 75% by weight of the cementitious component, and wherein the hydraulic cement is present in the settable composition in an amount of about 25% to about 75% by weight of the cementitious component.

15. The method of claim 12 wherein the swellable particle is present in the settable composition in an amount of about 5% to about 25% by weight of the cementitious component.

16. The method of claim 12 wherein the swellable particle swells upon contact with an aqueous fluid.

17. The method of claim 12 wherein the swellable particle swells upon contact with oil.

18. The method of claim 12 wherein the swellable particle comprises a block copolymer of styrene butadiene rubber.

20. A method comprising:

introducing a settable composition into an annulus between a pipe string and a subterranean formation, wherein the settable composition comprises;

a cementitious component comprising;

a hydraulic cement in an amount of about 25% to about 75% by weight of the cementitious component, and

cement kiln dust in an amount of about 25% to about 75% by weight of the cementitious component;

a swellable particle in an amount of about 5% to about 25% by weight of the cementitious component and comprising at least one swellable polymer selected from the group consisting of a block copolymer of styrene butadiene rubber, a sodium salt of polyacrylic acid, and combinations thereof; and

water; and

allowing the settable composition to set in the annulus.