METHODS AND COMPOSITIONS FOR STIMULATING THE PRODUCTION OF HYDROCARBONS FROM SUBTERRANEAN FORMATIONS

• Main Authors: FORBES, Natalie, CHAMPAGNE, Lakia M, FURSDON-WELSH, Angus, HILL, Randal M, ASHCRAFT, Paul
• Format: Patent
• Language: English; French
• Published: 27.06.2019
• 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

Emulsion or microemulsion for treating an oil or gas well having a wellbore are provided, and related methods. In some embodiments, the emulsion or microemulsion comprises an aqueous phase; a surfactant; and a non-aqueous phase comprising a first type of solvent and a second type of solvent. In some embodiments, the first type of solvent is a long chain hydrocarbon. In some embodiments, the second type of solvent is an oxygenated solvent. The emulsion or microemulsion may comprise additional components (e.g., at least one type of co-solvent). L'invention concerne une émulsion ou une microémulsion pour traiter un puits de pétrole ou de gaz ayant un puits de forage, et des procédés associés. Dans certains modes de réalisation, l'émulsion ou la microémulsion comprend une phase aqueuse; un tensioactif; et une phase non aqueuse comprenant un premier type de solvant et un second type de solvant. Dans certains modes de réalisation, le premier type de solvant est un hydrocarbure à longue chaîne. Dans certains modes de réalisation, le second type de solvant est un solvant oxygéné. L'émulsion ou la microémulsion peut comprendre des composants supplémentaires (par exemple, au moins un type de co-solvant).