SET ON DEMAND COMPOSITIONS

• US 20170130115A1
• Filed: 07/02/2014
• Published: 05/11/2017
• Est. Priority Date: 07/02/2014
• Status: Active Grant

• Current Assignee: Schlumberger Oilfield Holdings Ltd. (Schlumberger NV)
• Original Assignee: M-I Drilling Fluids UK Limited (Schlumberger NV)
• Inventors: Ballard, David Anthony
• Granted Patent: US 10,479,922 B2
• Time in Patent Office: Days
• CPC Class Codes: C04B 14/04 Silica-rich materials; Silicates
• CPC Class Codes: C04B 14/06 Quartz; Sand
• CPC Class Codes: C04B 2103/0086 Chelating or complexing agents
• CPC Class Codes: C04B 2103/20 Retarders
• CPC Class Codes: C04B 2103/40 Surface-active agents, dispersants
• CPC Class Codes: C04B 2103/402 anionic
• CPC Class Codes: C04B 24/003 Phosphorus-containing compounds
• CPC Class Codes: C04B 24/02 Alcohols; Phenols; Ethers
• CPC Class Codes: C04B 24/08 Fats; Fatty oils; Ester type waxes; Higher fatty acids, i.e. having at least seven carbon atoms in an unbroken chain bound to a carboxyl group; Oxidised oils or fats
• CPC Class Codes: C04B 24/14 Peptides; Proteins; Derivatives thereof
• CPC Class Codes: C04B 24/16 Sulfur-containing compounds
• CPC Class Codes: C04B 24/163 obtained by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C04B 24/18 Lignin sulfonic acid or derivatives thereof, e.g. sulfite lye
• CPC Class Codes: C04B 24/20 Sulfonated aromatic compounds
• CPC Class Codes: C04B 24/243 Phosphorus-containing polymers
• CPC Class Codes: C04B 24/2641 Polyacrylates; Polymethacrylates
• CPC Class Codes: C04B 24/2652 Nitrogen containing polymers, e.g. polyacrylamides, polyacrylonitriles
• CPC Class Codes: C04B 24/2664 of ethylenically unsaturated dicarboxylic acid polymers, e.g. maleic anhydride copolymers
• CPC Class Codes: C04B 24/2688 Copolymers containing at least three different monomers
• CPC Class Codes: C04B 28/02 containing hydraulic cements other than calcium sulfates
• CPC Class Codes: C04B 28/30 : containing magnesium cements or similar cementsmagnesium oxide cements C04B28/10
• CPC Class Codes: C04B 28/32 : Magnesium oxychloride cements, e.g. Sorel cement
• 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: E21B 33/14 : for cementing casings into boreholes

Abstract

Cement compositions may contain a cement component and an oil-immiscible solvent and used in a number of cementing applications. In another aspect, methods for sealing subterranean zones may include emplacing a cement composition into a wellbore containing a cement component and an oil-immiscible solvent, contacting the cement composition with a water source, and reacting the cement composition with the water source to form a hardened cement.

Claims

1. A cement composition comprising:

a cement component;

an oil-immiscible solvent;

a surfactant; and

one or more hydration retarders selected from a group consisting of polycarboxylate polymers, polycarboxylic acids, lignosulfonates, sulfonated tannins, and chelators.

2. The cement composition of claim 1, wherein the cement component comprises a magnesium-based cement.

3. The cement composition of claim 1, wherein the oil-immiscible solvent is one or more selected from a group consisting of ethylene glycol, propylene glycol, glycerol, diethylene glycol, triethylene glycol, 1,3-butanediol, and hexylene glycol.

4. The cement composition of claim 1, wherein the cement composition further comprises a particulate silica.

5. The cement composition of claim 1, wherein the surfactant is an anionic surfactant.

6. The cement composition of claim 1, further comprising an anionic surfactant that is one or more selected from a group consisting of alpha olefin sulfonates, fatty acid derivatives, phosphate esters, acetylene dials, and lecithins.

7. The cement composition of claim 1, further comprising one or more ionic polymers.

8. The cement composition of claim 7, wherein the one or more ionic polymer additive is a copolymer or terpolymer comprising at least one of acrylic acid, itaconic acid, maleic acid, acrylamido-2-methyl-propane sulfonic acid, styrene sulfonic acid, and vinyl phosphonic acid.

9. The cement composition of claim 1, wherein the cement composition comprises less than 15% by volume of water.

10. The cement composition of claim 1, wherein the cement composition contains one or more non-ionic polymers selected from polyvinylpyrrolidone, polyvinylpyrrolidone copolymers, polyacrylamide, polysuccinimide, polymaleic anhydride, and polymaleic anhydride copolymers.

11. A method for sealing a subterranean zone comprising:

emplacing a cement composition into a wellbore comprising;

a cement component,

an oil-immiscible solvent;

a surfactant; and

one or more hydration retarders selected from a group consisting of polycarboxylate polymers, polycarboxylic acids, lignosulfonates, sulfonated tannins, and chelators;

contacting the cement composition with a formation water; and

reacting the cement composition with the formation water to form a hardened cement.

12. The method of claim 11, wherein emplacing the cement composition comprises emplacing the cement composition into at least an interval of an annulus of the wellbore created by one or more concentric strings of pipe extending into the wellbore.

13. The method of claim 11, wherein the cement composition further comprises up to 10% w/w water.

14. The method of claim 11, wherein the oil-immiscible solvent is one or more selected from a group consisting of ethylene glycol, propylene glycol, glycerol, diethylene glycol, triethylene glycol, 1,3-butanediol, ethanolamine, and hexylene glycol.

15. The method of claim 11, wherein the cement composition further comprises a particulate silica.

16. The method of claim 11, wherein the surfactant is an anionic surfactant.

17. The method of claim 11, wherein the cement composition further comprises an ionic polymer.

18. The method of claim 11, wherein the cement composition contains one or more non-ionic polymers selected from polyvinylpyrrolidone, polyvinylpyrrolidone copolymers, polyacrylamide, polysuccinimide, polymaleic anhydride, and polymaleic anhydride copolymers.

19. The method of claim 11, further comprising at least one of a preflush and an overflush with an aqueous fluid.

20. A method for scaling a subterranean zone comprising:

emplacing a cement composition into a wellbore comprising;

a cement component;

an oil-immiscible solvent;

a surfactant;

one or more hydration retarders selected from a group consisting of polycarboxylate polymers, polycarboxylic acids, lignosulfonates, sulfonated tannins, and chelators; and

a latent curing agent;

releasing an aqueous fluid stored in the latent curing agent; and

reacting the cement composition with the aqueous fluid released from the latent curing agent to form a hardened cement.