Settable compositions comprising wollastonite and pumice and methods of use

• US 8,557,036 B1
• Filed: 11/09/2012
• Issued: 10/15/2013
• Est. Priority Date: 11/09/2012
• Status: Expired due to Fees

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Chatterji, Jiten, Brenneis, D. Chad, Keys, Crystal L.
• Primary Examiner(s): MARCANTONI, PAUL D
• Application Number:
  US13/672,837
• Time in Patent Office: 340 Days
• Field of Search: 106/470, 106/612, 106/705, 106/710
• US Class Current: 106/470
• CPC Class Codes: C04B 14/043 Alkaline-earth metal silicates, e.g. wollastonite
• CPC Class Codes: C04B 14/10 Clay sepiolite C04B14/042; grog C04B18/025
• CPC Class Codes: C04B 14/108 Shale, slate colliery shale C04B18/125
• CPC Class Codes: C04B 14/16 porous, e.g. pumice
• CPC Class Codes: C04B 14/18 Perlite
• CPC Class Codes: C04B 14/185 expanded
• CPC Class Codes: C04B 18/08 Flue dust , i.e. fly ash
• CPC Class Codes: C04B 18/101 Burned rice husks or other burned vegetable material
• CPC Class Codes: C04B 18/146 Silica fume
• CPC Class Codes: C04B 18/162 Cement kiln dust; Lime kiln dust
• CPC Class Codes: C04B 20/002 Hollow or porous granular materials
• CPC Class Codes: C04B 20/0048 Fibrous materials
• CPC Class Codes: C04B 2103/0088 Compounds chosen for their latent hydraulic characteristics, e.g. pozzuolanes
• CPC Class Codes: C04B 2103/12 Set accelerators
• CPC Class Codes: C04B 2103/22 Set retarders
• CPC Class Codes: C04B 2103/408 Dispersants
• CPC Class Codes: C04B 2103/44 Thickening, gelling or viscosity increasing agents
• CPC Class Codes: C04B 2103/46 Water-loss or fluid-loss reducers, hygroscopic or hydrophilic agents, water retention agents
• CPC Class Codes: C04B 2103/50 Defoamers, air detrainers
• CPC Class Codes: C04B 2111/00068 Mortar or concrete mixtures with an unusual water/cement ratio
• CPC Class Codes: C04B 2111/00146 : Sprayable or pumpable mixtures
• CPC Class Codes: C04B 2111/1037 : Cement free compositions, e.g. hydraulically hardening mixtures based on waste materials, not containing cement as such
• CPC Class Codes: C04B 22/062 : of the alkali or alkaline-earth metals
• CPC Class Codes: C04B 28/02 : containing hydraulic cements other than calcium sulfates
• CPC Class Codes: C04B 28/10 : Lime cements or magnesium oxide cements
• CPC Class Codes: C04B 28/12 : Hydraulic lime
• CPC Class Codes: C04B 38/02 : by adding chemical blowing agents
• CPC Class Codes: C04B 38/10 : by using foaming agents C04B38/02 takes precedenceor by using mechanical means, e.g. adding preformed foam
• CPC Class Codes: C04B 40/0028 : Aspects relating to the mixing step of the mortar preparation
• CPC Class Codes: C04B 40/0039 : Premixtures of ingredients
• CPC Class Codes: C04B 40/0042 : Powdery mixtures
• CPC Class Codes: C04B 7/34 : Hydraulic lime cements; Roman cements ; natural cements
• 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: Y02W 30/91 : Use of waste materials as fillers for mortars or concrete

Abstract

Methods and compositions are provided that relate to cementing operations, including a method of cementing that may comprise providing a settable composition that may comprise wollastonite, pumice, a calcium-ion source, and water, wherein the wollastonite may be present in an amount in a range of from about 25% to about 75% by combined weight of the wollastonite and pumice, and wherein the pumice may present in an amount in a range of from about 25% to about 75% by combined weight of the wollastonite and pumice. Embodiments of the method further may comprise allowing the settable composition to set.

Claims

1. A method of cementing comprising:

providing a settable composition comprising;

wollastonite;

pumice;

a calcium-ion source in an amount in a range of from about 0.1% to about 25% by combined weight of the wollastonite and pumice; and

water in an amount in a range of from about 40% to about 200% by combined weight of the wollastonite and pumice;

wherein the wollastonite is present in an amount in a range of from about 25% to about 75% by combined weight of the wollastonite and pumice; and

wherein the pumice is present in an amount in a range of from about 25% to about 75% by combined weight of the wollastonite and pumice;

introducing the settable composition into a subterranean formation; and

allowing the settable composition to set.

2. The method of claim 1, wherein the settable composition has a density in a range of from about 12 pounds per gallon to about 20 pounds per gallon.

3. The method of claim 1, wherein the water is present in an amount in a range of from about 40% to about 150% by combined weight of the wollastonite and pumice.

4. The method of claim 1, wherein the calcium-ion source comprises lime.

5. The method of claim 1, wherein the calcium-ion source is present in an amount in a range of from about 0.1% to about 15% by combined weight of the wollastonite and pumice.

6. The method of claim 1, wherein the settable composition further comprises an additive selected from the group consisting of a dispersant, a strength-retrogression additive, a set accelerator, a set retarder, a weighting agent, a lightweight additive, a gas-generating additive, a mechanical property enhancing additive, a lost-circulation material, a fluid loss control additive, a foaming additive, a defoaming additive, a thixotropic additive, and any combination thereof.

7. The method of claim 1, wherein the settable composition further comprises an additive selected from the group consisting of crystalline silica, amorphous silica, fumed silica, salts, fibers, hydratable clays, calcined shale, vitrified shale, microspheres, fly ash, diatomaceous earth, metakaolin, ground perlite, rice husk ash, natural pozzolan, zeolite, cement kiln dust, resins, any combination thereof.

8. The method of claim 1, wherein the settable composition is free of any additional cementitious materials.

9. The method of claim 1, wherein the settable composition is free of Portland cement.

10. The method of claim 1, wherein the settable composition is introduced into a well bore annulus.

11. The method of claim 1, wherein the settable composition is allowed to set in a well-bore annulus.

12. The method of claim 1, wherein the settable composition is used in primary cementing.

13. The method of claim 1, wherein the settable composition is used in remedial cementing.

14. A method of cementing comprising:

providing a settable composition, wherein the providing the settable composition comprises;

preparing a base fluid comprising water and lime;

preparing a dry blend comprising wollastonite and pumice, wherein the wollastonite is present in an amount in a range of from about 25% to about 75% by combined weight of the wollastonite and pumice, wherein the pumice is present in an amount in a range of from about 25% to about 75% by combined weight of the wollastonite and pumice;

combining the base fluid and the dry blend to form the settable composition that is free of Portland cement;

introducing the settable composition into a subterranean formation; and

allowing the settable composition to set.

15. The method of claim 14, wherein the lime is present in the settable composition in an amount in a range of from about 0.1% to about 25% by combined weight of the wollastonite and pumice.

16. The method of claim 14, wherein the settable composition is allowed to set in a well-bore annulus.

17. The method of claim 14, wherein the settable composition is used in primary cementing.

18. The method of claim 14, wherein the settable composition is used in remedial cementing.

19. The method of claim 14, wherein the water is present in an amount in a range of from about 40% to about 200% by combined weight of the wollastonite and pumice.

20. The method of claim 14, wherein the settable composition is introduced into a well bore annulus.