Wide range retarder that improves early compressive strength development
A cement composition comprising an aqueous fluid, a cement, and a cement retarder. The cement retarder comprises a biosurfactant, and is operable to retard cement thickening of the cement composition, relative to a same cement composition absent the cement retarder, over a temperature range of from about 40° F. (4.4° C.) to about 500° F. (260° C.), from about 40° F. (4.4° C.) to about 400° F. (204.4° C.), from about 50° F. (10° C.) to about 350° F. (176.7° C.), or from about 60° F. (15.6° C.) to about 250° F. (121.1° C.).
1 . A cement composition comprising:
an aqueous fluid,
a cement, and
a cement retarder, wherein the cement retarder comprises a biosurfactant, wherein the biosurfactant comprises at least one sophorolipid, and wherein the cement retarder is operable to retard cement thickening of the cement composition, relative to a same cement composition absent the cement retarder, over a temperature range of from about 40° F. (4.4° C.) to about 500° F. (260° C.).
2 . The cement composition of claim 1 , wherein a thickening time of the cement composition, as measured by API RP Practice 10B-2, is increased by at least 10% relative to the same cement composition absent the cement retarder.
3 . The cement composition of claim 1 , wherein the cement retarder does not delay an onset of compressive strength relative to a same cement composition absent the cement retarder.
4 . The cement composition of claim 3 , wherein the cement retarder does not delay the onset of compressive strength relative to a same cement composition absent the retarder or does not delay the compressive strength as much as another cement composition, wherein the another cement composition is absent the biosurfactant and comprises a different cement retarder.
5 . The cement composition of claim 4 , wherein the cement composition comprises an amount of the cement retarder comprising the biosurfactant, wherein the another cement composition comprises an amount of the different cement retarder, and wherein the amount of the cement retarder comprising the biosurfactant is less than the amount of the different cement retarder.
6 . The cement composition of claim 1 , wherein the biosurfactant further comprises an alkyl polyglycoside (APGs).
7 . The cement composition of claim 1 , wherein the biosurfactant further comprises one or more alkyl polyglycosides (APGs), other surface active glycolipids, derivatives and/or substituted forms thereof, subgroups thereof, or combinations thereof.
8 . The cement composition of claim 1 , wherein the at least one sophorolipid comprises an acidic form sophorolipid, a lactonic form sophorolipid, or a combination thereof.
9 . The cement composition of claim 1 , wherein the at least one sophorolipid comprises an acidic form sophorolipid.
10 . The cement composition of claim 1 , wherein the at least one sophorolipid comprises a lactonic form sophorolipid.
11 . The cement composition of claim 1 , further comprising a secondary cement retarder selected from phosphonic acids; lignosulfonates; salts, organic acids; cellulose derivatives;
synthetic co-or terpolymers comprising sulfonate and carboxylic acid groups; borate compounds;
derivatives thereof, or combinations thereof.
12 . A method for cementing in a subterranean formation, the method comprising:
providing the cement composition of claim 1 ;
introducing the cement composition into a wellbore penetrating a subterranean formation;
pumping the cement composition to a location within the wellbore; and
allowing the cement composition to set at the location.
13 . The method of claim 12 , wherein a thickening time of the cement composition, as measured by API RP Practice 10B-2, is increased by at least 10% relative to the same cement composition absent the cement retarder.
14 . The method of claim 12 , wherein the cement retarder does not delay an onset of compressive strength relative to a same cement composition absent the cement retarder.
15 . The method of claim 12 , wherein the biosurfactant further comprises one or more alkyl polyglycosides (APGs), other surface active glycolipids, derivatives and/or substituted forms thereof, subgroups thereof, or combinations thereof.
16 . The method of claim 12 , wherein the at least one sophorolipid comprises an acidic form sophorolipid, a lactonic form sophorolipid, or a combination thereof.
17 . A system for cementing in a subterranean formation, the system comprising:
the cement composition of claim 1 ,
mixing equipment configured to mix the aqueous fluid, the cement, and the cement retarder to provide the cement composition, and
pumping equipment configured to pump the cement composition into a wellbore penetrating a subterranean formation.
18 . The system of claim 17 , wherein the wellbore has a bottom hole temperature of greater than or equal to about 250° F. (121.1° C.).
19 . The system of claim 17 , wherein a thickening time of the cement composition, as measured by API RP Practice 10B-2, is increased by at least 10% relative to the same cement composition absent the cement retarder.
20 . The system of claim 17 , wherein the biosurfactant further comprises one or more alkyl polyglycosides (APGs), other surface active glycolipids, derivatives and/or substituted forms thereof, subgroups thereof, or combinations thereof.