Cement Set Activators for Set-Delayed Cement Compositions and Associated Methods

• US 20160280982A1
• Filed: 05/23/2016
• Published: 09/29/2016
• Est. Priority Date: 03/09/2012
• Status: Active Grant

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Boul, Peter James, Pisklak, Thomas Jason, Lewis, Samuel J., Agapiou, Kyriacos, Brothers, Lance Everett, Otieno, Pauline Akinyi, Morgan, Ronnie Glen, Adams, Baya, Harris, Cody Glenn
• Granted Patent: US 9,920,235 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C04B 14/062 Microsilica, e.g. colloïdal silica preparing microsilica slurries or suspensions C04B18/148
• CPC Class Codes: C04B 14/16 porous, e.g. pumice
• CPC Class Codes: C04B 20/023 Chemical treatment
• 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 22/147 Alkali-metal sulfates; Ammonium sulfate
• CPC Class Codes: C04B 22/16 containing phosphorus in the anion, e.g. phosphates
• CPC Class Codes: C04B 24/003 Phosphorus-containing compounds
• CPC Class Codes: C04B 24/006 Boron-containing compounds
• 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 24/22 Condensation or polymerisation products thereof
• CPC Class Codes: C04B 24/2641 Polyacrylates; Polymethacrylates
• CPC Class Codes: C04B 24/383 Cellulose or derivatives thereof
• CPC Class Codes: C04B 28/18 containing mixtures of the silica-lime type
• CPC Class Codes: C04B 28/182 based on calcium silicate forming mixtures not containing lime or lime producing ingredients, e.g. waterglass based mixtures heated with a calcium salt
• CPC Class Codes: C04B 28/184 based on an oxide other than lime
• CPC Class Codes: C04B 28/186 containing formed Ca-silicates before the final hardening step
• CPC Class Codes: C04B 28/188 : the Ca-silicates being present in the starting mixture
• CPC Class Codes: C04B 40/0658 : Retarder inhibited mortars activated by the addition of accelerators or retarder-neutralising agents
• 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 33/13 : Methods or devices for cementing, for plugging holes, crevices or the like
• CPC Class Codes: E21B 33/138 : Plastering the borehole wall; Injecting into the formation
• CPC Class Codes: E21B 33/14 : for cementing casings into boreholes

Abstract

Disclosed herein are cement compositions and methods of using set-delayed cement compositions in subterranean formations. In one embodiment, a method of cementing in a subterranean formation is described. The method may comprise providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder; activating the set-delayed cement composition with a liquid additive to produce an activated cement composition, wherein the liquid additive comprises a monovalent salt, a polyphosphate, a dispersant, and water; and allowing the activated cement composition to set.

Claims

1. An activated cement composition comprising:

water;

pumice;

hydrated lime;

a set retarder;

a monovalent salt; and

a polyphosphate.

2. The composition of claim 1 further comprising a dispersant.

3. The composition of claim 1 wherein the polyphosphate comprises sodium hexametaphosphate.

4. The composition of claim 1 wherein the monovalent salt comprises sodium sulfate.

5. The composition of claim 1 wherein the polyphosphate comprises sodium hexametaphosphate, the monovalent salt comprises sodium sulfate, and wherein the activated cement composition further comprises a polycarboxylated ether dispersant.