Method for the treatment of rock formations and novel polyampholytes
    7.
    发明授权
    Method for the treatment of rock formations and novel polyampholytes 有权
    用于处理岩层和新型聚阴离子的方法

    公开(公告)号:US08680028B2

    公开(公告)日:2014-03-25

    申请号:US12997144

    申请日:2009-06-02

    IPC分类号: C09K8/68

    摘要: A method for the treatment of rock formations which may or may not be underground and, more particularly, of oil or gas production wells, water-injection wells intended to flood hydrocarbon (oil or gas) reservoirs or gas mines or gas storage wells includes a step of injecting, into the rock formation or well, a microgel obtained by dilution in water of a self-invertible inverse latex or of a self-invertible inverse microlatex of a crosslinked polyelectrolyte, obtained by copolymerization, in the presence of a crosslinking agent of partially- or totally-salified free 2-methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid, with at least one cationic monomer chosen from: 2,N,N,N-tetramethyl-2-[(1-oxo-2-propenyl)amino]propanammonium chloride; N,N,N-trimethyl-3-[(1-oxo-2-propenyl)amino]propanammonium chloride; diallyldimethylammonium chloride; N,N,N-trimethyl-2-[(1-oxo-2-propenyl)]ethanammonium chloride; N,N,N-trimethyl-2-[(1-oxo-2-methyl-2-propenyl)]ethanammonium chloride; or N,N,N-trimethyl-3-[(1-oxo-2-methyl-2-propenyl)amino]propanammonium chloride; and with at least one neutral monomer chosen from: acrylamide; N,N-dimethylacrylamide; N-[2-hydroxy-1,1-bis(hydroxymethyl)-ethyl]propenamide; or 2-hydroxyethyl acrylate.

    摘要翻译: 用于处理可能是或可能不是地下的岩层的方法,特别是石油或天然气生产井,用于泛洪(油或气)储层或瓦斯矿或储气井的注水井的方法包括: 将通过在自交反相胶乳的水中稀释而得到的微凝胶或通过共聚获得的交联聚电解质的自反转微胶囊获得的微凝胶在交联剂的存在下, 部分或完全盐化的游离2-甲基-2 - [(1-氧代-2-丙烯基)氨基] -1-丙磺酸与至少一种阳离子单体选自:2,N,N,N-四甲基 - 2 - [(1-氧代-2-丙烯基)氨基]丙基氯化铵; N,N,N-三甲基-3 - [(1-氧代-2-丙烯基)氨基]丙基氯化铵; 二烯丙基二甲基氯化铵; N,N,N-三甲基-2 - [(1-氧代-2-丙烯基)]乙基氯化铵; N,N,N-三甲基-2 - [(1-氧代-2-甲基-2-丙烯基)]乙基氯化铵; 或N,N,N-三甲基-3 - [(1-氧代-2-甲基-2-丙烯基)氨基]丙基氯化铵; 和至少一种选自以下的中性单体:丙烯酰胺; N,N-二甲基丙烯酰胺; N- [2-羟基-1,1-双(羟甲基) - 乙基]丙烯酰胺; 或丙烯酸2-羟基乙酯。

    Method for producing water-soluble comb-shaped copolymers
    8.
    发明授权
    Method for producing water-soluble comb-shaped copolymers 有权
    生产水溶性梳状共聚物的方法

    公开(公告)号:US07932339B2

    公开(公告)日:2011-04-26

    申请号:US11921000

    申请日:2006-05-18

    IPC分类号: C08F20/00

    摘要: Method for producing a comb-shaped copolymer whose skeleton is of an acrylamide, acrylic acid, acryloyl aminoethanol or dimethyl acrylamide type and on which poly(N-alkyl acrylamide) or poly(N,N-5 dialkyl acrylamide lateral segments are grafted, includes (a) producing a telomer poly(N-alkyl acrylamide) or poly(N,N-dialkyl acrylamide) of formula (I) H2N—R1-Z-{CH2—C(R2) [C(═O)N(R3) (R4)]—}n—H (I) 10 by reacting in water a compound of formula (II) CH2═C(R2)—C(═O)—N(R3) (R4) (II) with a chain limiting compound of formula (III) Z-R1—NH2; (b) isolating the telomer of formula (I) obtained at a stage (a); (c) reacting in water the telomer of formula (I) obtained at stage (b) with an acid chloride of formula (IV) CH2═C(R5)—C(═O)—C1 at a molar ratio (IV)/(III) equal to or less than 10 and equal to or greater than 1 so that a macro monomer of formula (V) 20 CH2═C(R5)—C(═O)NH—R1-Z-{CH2—C(R2) [C(═O)N(R3) (R4)]—}n—H (V) is obtained; (d) isolating the macro monomer of formula (V) obtained at stage (c); (e) copolymerizing in water the macro monomer of formula (V) isolated at stage (d) with a monomer selected from acrylamide, acrylic acid, acryloyl-aminoethanol or dimethyl-acrylamide and, if necessary, (f) purifying the thus obtained copolymer.

    摘要翻译: 制备其骨架为丙烯酰胺,丙烯酸,丙烯酰氨基乙醇或二甲基丙烯酰胺类型的梳状共聚物的方法,其上聚(N-烷基丙烯酰胺)或聚(N,N-5二烷基丙烯酰胺侧链段)被接枝在其上,包括 (a)制备式(I)H 2 N-R 1 -Z- {CH 2 -C(R 2)[C(= O)N(R 3))的调聚物聚(N-烷基丙烯酰胺)或聚(N,N-二烷基丙烯酰胺) )(R)R(R)) - (R)的化合物与式(II)化合物 式(III)Z-R1-NH2的连接限制性化合物;(b)分离在阶段(a)中获得的式(I)调聚物;(c)在水中反应在步骤 b)与等于或小于10且等于或大于1的摩尔比(IV)/(III)的式(IV)的酰氯CH 2 = C(R 5)-C(= O)-C 1 式(V)20 CH 2 = C(R 5)-C(= O)NH-R 1 -Z- {CH 2 -C(R 2)[C(= O)N(R 3)(R 4)] - } n-H(V);(d)分离宏 在阶段(c)获得的式(Ⅴ)单体; (e)在水中将阶段(d)分离的式(V)的大分子单体与选自丙烯酰胺,丙烯酸,丙烯酰基 - 氨基乙醇或二甲基 - 丙烯酰胺的单体共聚,如果需要,(f)纯化由此得到的共聚物 。