Hydrocarboxylic acid derivative as a retarder additive for oil and gas wells cementing

Patent metadata

Field	Value
Publication number	US-11970423-B2
Application number	US-202117543991-A
Country	US
Kind code	B2
Filing date	Dec 7, 2021
Priority date	Dec 7, 2021
Publication date	Apr 30, 2024
Grant date	Apr 30, 2024

Abstract

Cement compositions of the present disclosure include a cement precursor, water, and a cement retarder that includes hydrocarboxylic acid derivatives. In particular, the cement compositions include from 10 wt. % to 70 wt. % cement precursor, from 5 wt. % to 70 wt. % water, and from 0.1 percent by weight of cement (BWOC) to 10 percent BWOC cement retarder comprising the hydrocarboxylic acid derivatives. The hydrocarboxylic acid derivatives provide increased thickening time to the cement compositions at downhole temperatures of greater than or equal to 50° C. The present disclosure further includes methods of cementing a wellbore using the cement compositions with the cement retarder comprising the hydrocarboxylic acid derivatives.

First claim

What is claimed is:

1. A cement composition comprising:
from 10 weight percent to 70 weight percent cement precursor based on the total weight of the cement composition, where the cement precursor comprises tricalcium silicate, dicalcium silicate, tricalcium aluminate, and tetracalcium alumina ferrite;
from 5 weight percent to 70 weight percent water based on the total weight of the cement composition; and
from 0.1 percent by weight of cement (BWOC) to 10 percent BWOC cement retarder, where the cement retarder comprises a hydrocarboxylic acid derivative that comprises at least one hydroxyl group and at least one carboxyl group.

2. The cement composition of claim 1 , where the hydrocarboxylic acid derivative comprises an alkali metal or alkaline earth metal salt of gluconic acid.

3. The cement composition of claim 1 , where the hydrocarboxylic acid derivative comprises sodium gluconate.

4. The cement composition of claim 1 , where the cement retarder consists of sodium gluconate.

5. The cement composition of claim 1 , where the cement precursor is API Class G cement.

6. The cement composition of claim 1 , where the cement precursor further comprises gypsum.

7. The cement composition of claim 1 , where the cement precursor comprises from 75 wt. % to 85 wt. % silicates based on the total weight of the cement precursor.

8. The cement composition of claim 1 , further comprising from 5 percent BWOC to 50 percent BWOC silica flour or from 10 percent BWOC to 150 percent BWOC weighting agent.

9. The cement composition of claim 1 , further comprising:
from greater than 0 percent BWOC to less than or equal to 10 percent BWOC expansion additive;
from greater than 0 percent BWOC to less than or equal to 5 percent BWOC defoamer;
from greater than 0 percent BWOC to less than or equal to 10 percent BWOC latex; and
from greater than 0 percent BWOC to less than or equal to 10 percent BWOC latex stabilizer.

10. The cement composition of claim 1 , where a gel strength of the cement composition has a value greater than or equal to 1 when measured at room temperature and at a speed of 3 rotations per minute (rpm) using the method provided in the APIRecommended Practice For Cementing (RP 10B).

11. The cement composition of claim 1 , where the cement composition has a gel strength greater than or equal to 1 using the method provided in the API Recommended Practice for Cementing.

12. The cement composition of claim 1 , where the cement composition has a density in a range of from 65 pcf to 180 pcf, a cure time of from greater than or equal to 4 hours, or both.

13. The cement composition of claim 1 , where the cement composition has a thickening time of from 4 hours to 48 hours.

14. The cement composition of claim 1 , further comprising:
from greater than 0 percent BWOC to 50 percent BWOC silica sand;
from 5 percent BWOC to 50 percent BWOC silica flour; and
from 10 percent BWOC to 150 percent BWOC weighting agent.

15. The cement composition of claim 1 , where:
the hydrocarboxylic acid derivative comprises sodium gluconate, and
the cement precursor further comprises gypsum.

16. A method for cementing a wellbore, the method comprising:
dispensing a cement composition into an annulus defined between a tubular string and an inner wall of a wellbore or between two tubular strings, where:
the cement composition comprises a cement precursor, water, and from 0.1 percent by weight of cement (BWOC) to 10 percent BWOC cement retarder;
the cement retarder comprises a hydrocarboxylic acid derivative that comprises at least one hydroxyl group and at least one carboxyl group; and
the cement precursor comprises tricalcium silicate, dicalcium silicate, tricalcium aluminate, and tetracalcium alumina ferrite; and

allowing the cement composition to cure in the annulus to form a cured cement, where the cement retarder comprising the hydrocarboxylic acid derivative increases the thickening time of the cement composition to greater than or equal to 4 hours at downhole temperatures greater than or equal to 50° C.

17. The method of claim 16 , further comprising preparing the cement composition,
where preparing the cement composition comprises:
combining the cement precursor and water to prepare a cement slurry;
combining the cement retarder with the cement slurry to produce the cement composition; and
mixing the cement composition to obtain a homogeneous mixture.

18. The method of claim 16 , where the hydrocarboxylic acid derivative comprises an alkali metal or alkaline earth metal salt of gluconic acid.

19. The method of claim 16 , where the hydrocarboxylic acid derivative comprises sodium gluconate.

Assignees

• Saudi Arabian Oil Co

Inventors

• Alkhalaf Sara Abdulaziz
• Al-Yami Abdullah
• Wagle Vikrant
• Al Safran Ali

Classifications

• C04B24/06 Primary

  containing hydroxy groups · CPC title

• C04B7/32

  Aluminous cements · CPC title

• C04B12/04

  Alkali metal or ammonium silicate cements {; Alkyl silicate cements; Silica sol cements; Soluble silicate cements (alkali metal silicates per se, their preparation C01B33/32; ammonium silicates per se, their preparation C01C1/00)} · CPC title

• C04B40/06

  Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers {; Inhibiting the action of active ingredients} · CPC title

• C09K8/467

  containing additives for specific purposes · CPC title