COMPOSITIONS FOR ENHANCED OIL RECOVERY

Disclosed herein are compositions and methods for increasing recovery, or flowback, of hydrocarbon compounds from hydrocarbon-containing subterranean reservoirs. The flowback compositions include an anionic sulfonated surfactant, an amphoteric surfactant, water, and a coupling agent. The flowback co...

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Hauptverfasser: PHAN, JENNY L, PHAN, TRI, NGUYEN, DUY T, HSU, TZU-PING
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PHAN, TRI
NGUYEN, DUY T
HSU, TZU-PING
description Disclosed herein are compositions and methods for increasing recovery, or flowback, of hydrocarbon compounds from hydrocarbon-containing subterranean reservoirs. The flowback compositions include an anionic sulfonated surfactant, an amphoteric surfactant, water, and a coupling agent. The flowback compositions convert oil-wet rocks to water-wet, yet exhibit a low tendency of composition components to sorb to the rock. The flowback compositions do not cause formation of emulsions with hydrocarbon compounds within the subterranean environment. The flowback compositions are particularly useful for increasing the yield of hydrocarbons recovered from tight shale reservoirs. L'invention concerne des compositions et des procédés pour améliorer la récupération, ou le reflux, de composés d'hydrocarbures à partir de réservoirs souterrains contenant des hydrocarbures. Les compositions de reflux comprennent un tensioactif sulfoné anionique, un tensioactif amphotère, de l'eau et un agent de couplage. Les compositions de reflux convertissent les roches imprégnées de pétrole en roches imprégnées d'eau tout en présentant une faible tendance des constituants de la composition à pénétrer par sorption dans la roche. Les compositions de reflux ne provoquent pas la formation d'émulsions avec des composés d'hydrocarbures dans l'environnement souterrain. Les composition de reflux servent à augmenter le rendement d'hydrocarbures récupérés à partir de réservoirs de schiste étanches.
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subjects ADHESIVES
CHEMISTRY
DYES
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MINING
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
PAINTS
POLISHES
title COMPOSITIONS FOR ENHANCED OIL RECOVERY
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