Ultra short hydrophobes for unconventional reservoirs with light oils containing solution gas
AssigneesUltimate Eor Services LLC, Harcros Chemicals Inc.
InventorsUpali WEERASOORIYA, Don Pathma Jith LIYANAGE, Karasinghe Arachchige Nadeeka UPAMALI, Christopher James BRITTON, Robert Matthew DEAN, John BOOREM, Kurt CHESHIRE
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Abstract
Disclosed are compounds as well as methods of using thereof in oil and gas operations. The compounds described herein can be used in Enhanced Oil Recovery (EOR) formulations to provide aqueous stability and ultra-low interfacial tension region. Accordingly, also provided are aqueous compositions for use in EOR that comprise the compounds described herein.
Claims26
A compound defined by Formula I
- wherein
- R1 is a C1-C8 alkyl group or C6 aryl group, the C6-aryl group optionally substituted with one or two C1-C2 alkyl groups;
- R2 is, independently for each occurrence, hydrogen or methyl;
- z is an integer from 10 to 75;
- X is —H, —SO3M+, —SO3H, CH2CH(OH)CH2—SO3M+, CH2CH(OH)CH2—SO3H, —CH2C(O)O−M+, or —CH2C(O)OH;
- and
- M+ is a cation.
6-7. (canceled)
The compound of claim 7, wherein R1 is substituted with one C1-C2 alkyl group.
The compound of claim 7, wherein R1 is substituted with two C1-C2 alkyl groups.
15-16. (canceled)
The compound of claim 16, wherein R1 is substituted with one C1-C2 alkyl group.
The compound of claim 16, wherein R1 is substituted with two C1-C2 alkyl groups.
22-31. (canceled)
An emulsion comprising the the compound of claim and (ii) unrefined petroleum.
33-34. (canceled)
36-37. (canceled)
39-41. (canceled)
Dependencies are inferred from the claim text.