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US 2024/0294823 A1Published application
Low surface tension surfactant system for enhancing flow-back performance
AssigneeSaudi Arabian Oil Company
InventorsZiyuan Qi, Rajendra Arunkumar Kalgaonkar, Mohammed A. Bataweel, Ming Han
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Abstract
A hydraulic fracturing fluid and methods for using the hydraulic fracturing fluid fracturing a formation are provided. An exemplary hydraulic fracturing fluid includes a polymer additive, a breaker, a non-ionic surfactant. The hydraulic fracturing fluid also includes an amphoteric surfactant, or a cationic surfactant, or both, and a base fluid.
Claims28
A hydraulic fracturing fluid, comprising:
- a polymer additive;
- a breaker;
- a non-ionic surfactant, wherein the non-ionic surfactant comprises 2-[hydroxy(polyethyleneoxy)propyl]heptamethyltrisiloxane (HPTSO);
- an amphoteric surfactant, wherein the amphoteric surfactant comprises 3-(N,N-dimethyltetradecylammonio)propanesulfonate (SB3-14);
- and
- a base fluid, wherein the base fluid comprises a brine;
- wherein a mass ratio of HTPSO to SB3-14 is less than 3 to 1.
4 more elements
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A method for fracturing a formation using a surfactant blend as a flow-back enhancer, comprising:
- preparing the surfactant blend in a base fluid, wherein the base fluid comprises a brine, wherein the surfactant blend comprises a first surfactant comprising a non-ionic surfactant, wherein the non-non-ionic surfactant comprises 2-[hydroxy (polyethyleneoxy)propyl]heptamethyltrisiloxane (HPTSO) and a second surfactant comprising a zwitterionic surfactant, wherein the zwitterionic surfactant comprises 3-(N,N-dimethyltetradecylammonio) propanesulfonate (SB3-14), wherein a mass ratio of HTPSO to SB3-14 is less than 3 to 1;
- mixing a fracturing fluid comprising the surfactant blend;
- suspending a proppant in the fracturing fluid;
- and
- injecting the fracturing fluid into the formation.
2 more elements
27-28. (canceled)
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Dependencies are inferred from the claim text.