Method of mineral oil production
    71.
    发明专利

    公开(公告)号:AU2015348408B2

    公开(公告)日:2019-08-15

    申请号:AU2015348408

    申请日:2015-11-17

    Applicant: BASF SE

    Abstract: The present invention relates to a method of producing mineral oil from underground mineral oil deposits, in which an aqueous formulation comprising at least a mixture of alkyl ether carboxylate and corresponding alkyl ether alcohol, where the alkyl ether carboxylate has been prepared from the alkyl ether alcohol and the molar ratio in the mixture of alkyl ether carboxylate:alkyl ether alcohol is from 51:49 to 92:8, is injected through at least one injection well into a mineral oil deposit, where the deposit has a deposit temperature of 55°C to 150°C, a crude oil having more than 20° API and a deposit water having more than 100 ppm of divalent cations, and crude oil is withdrawn through at least one production well from the deposit. The invention further relates to the preparation of the mixture and to a concentrate comprising the mixture.

    SOLUBILITY ENHANCERS ON BASIS OF ALLYL ALCOHOL FOR AQUEOUS SURFACTANT FORMULATIONS FOR ENHANCED OIL RECOVERY

    公开(公告)号:CA3068362A1

    公开(公告)日:2019-01-17

    申请号:CA3068362

    申请日:2018-07-11

    Applicant: BASF SE

    Abstract: The present invention relates to a method for the production of crude oil from subterranean, oil- bearing formations comprising at least the following steps of providing an aqueous surfactant composition comprising water and a surfactant mixture, injecting said surfactant composition into the subterranean, oil-bearing formation through at least one injection well, thereby reducing the crude oil-water interfacial tension to less than 0.1 mN/m, and withdrawing crude oil from the formation through at least one production well, wherein the surfactant mixture comprises at least a surfactant (A) having the general formula R1-O-(CH2CH(R2)O)a-(CH2CH(CH3)O)b- (CH2CH2O)c-R3-Y- M+ (I) and a solubility enhancer (B) having the general formula R4-O-(CH2CH(CH3)O)x-(CH2CH2O)y-R3-Y- M+ (II), wherein R1 to R4, a, b, c, x, y, Y and M have the meaning as defined the the description and claims. The invention further relates to said aqueous surfactant composition and methods for preparing the same as well as the use of solubility enhancer (B) for enhancing the solubility of anionic surfactant (A).

    processo para produção de petróleo mineral, e, formulação aquosa de tensoativo

    公开(公告)号:BR112012008667A2

    公开(公告)日:2016-04-19

    申请号:BR112012008667

    申请日:2010-10-11

    Applicant: BASF SE

    Abstract: processo para produção de petróleo mineral, e, formulação aquosa de tensoativo. um processo para produção de petróleo mineral, especialmente de inundação por microemulsão winsor tipo iii, em que uma formulação aquosa de tensoativo é usada, que compreende pelo menos um polialcoxisulfato de alquila contendo grupos propoxi, e também pelo menos um tensoativo diferente, é forçado através de poços de injeção num depósito de petróleo mineral, e petróleo bruto é retirado do depósito através de poços de produção. o polialcoxisulfato de alquila contendo grupos propoxi aqui é preparado por sulfatação de um álcool alcoxilado, o álcool alcoxilado sendo preparado pela alcoxilação um álcool usando catalisadores de cianeto de metal duplo ou argilas de hidróxido duplo.

    METODO PARA FRACTURAR FORMACIONES SUBTERRANEAS.

    公开(公告)号:MX2015009083A

    公开(公告)日:2016-03-16

    申请号:MX2015009083

    申请日:2014-01-03

    Applicant: BASF SE

    Abstract: Método para fracturar formaciones subterráneas usando composiciones acuosas que comprenden al menos un fluido de base acuosa, agentes de sostén, un agente de viscosidad, al menos una ayuda del flujo de retorno y la remoción de al menos una porción del fluido de fracturamiento acuoso a partir de la formación luego del fracturamiento. La ayuda del flujo de retorno se selecciona entre el grupo de alquil o alquenil poliglucósidos, alquil o alquenil poliglucósidos carboxilados y alcoholes alcoxilados ramificados.

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