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公开(公告)号：US4933378A
公开(公告)日：1990-06-12
申请号：US390575
申请日：1989-08-07
CPC分类号： C04B24/2652 , C04B28/02 , C09K8/487
摘要： A cementing composition useful in cementing oil, gas and water wells, comprising water, hydraulic cement and an effective amount of water soluble fluid loss additive comprised of a copolymer of acrylamide/vinyl imidazole and derivatives thereof in a weight percent ratio of from about 95:5 to 5:95, said copolymer having a molecular weight range of from about 100,000 to 3,000,000. The composition can also optionally include a dispersant such as sodium or potassium salts or a sulfonated naphthalene formaldehyde condensate.
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公开(公告)号：US4931489A
公开(公告)日：1990-06-05
申请号：US389649
申请日：1989-08-04
CPC分类号： C04B28/02 , C04B24/2652 , C09K8/487
摘要： A cementing composition useful in cementing oil, gas and water wells, comprising water, hydraulic cement and an effective amount of water soluble fluid loss additive comprised of a copolymer of acrylamide/vinyl imidazole and derivatives thereof in a weight percent ratio of from about 95:5 to 5:95, said copolymer having a molecular weight range of from about 100,000 to 3,000,000. The composition can also optionally include a dispersant such as sodium or potassium salts or a sulfonated naphthalene formaldehyde condensate.
摘要翻译： 用于固井油，气和水井的固井组合物，其包含水，水硬性水泥和有效量的水溶性流体损失添加剂，其由丙烯酰胺/乙烯基咪唑及其衍生物的共聚物组成，其重量比为约95： 5至5:95，所述共聚物的分子量范围为约100,000至3,000,000。 组合物还可任选地包括分散剂如钠盐或钾盐或磺化萘甲醛缩合物。
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公开(公告)号：US5228915A
公开(公告)日：1993-07-20
申请号：US981921
申请日：1992-11-23
摘要： A cementing composition useful in cementing oil, gas and water wells, comprising water, hydraulic cement and an effective amount of water soluble fluid loss additive comprised of a blend of a copolymer (i) of acrylamide/vinyl imidazole in a weight percent ratio of from about 95:5 to 5:95, said copolymer (i) having a molecular weight range of from about 100,000 to 3,000,000, and a copolymer (ii) of vinyl pyrrolidone and the sodium salt of vinyl sulfonate in a weight percent ratio of 80:20 to 20:80, said copolymer (ii) having a molecular weight range of from about 100,000 to 3,000,000. The blend is comprised of a weight percent ratio of copolymer (i) to copolymer (ii) in the range of 20:80 to 80:20. The composition can also optionally include a dispersant such as sodium or potassium salts or a sulfonated naphthalene formaldehyde condensate.
摘要翻译： 用于固井油，气和水井的固井组合物，包括水，水硬性水泥和有效量的水溶性流体损失添加剂，其由丙烯酰胺/乙烯基咪唑共聚物（i）的共混物组成，其重量百分比为 约95:5至5:95，所述共聚物（i）的分子量范围为约100,000至3,000,000，和乙烯基吡咯烷酮和乙烯基磺酸钠盐的共聚物（ii）的重量比为80： 20至20:80，所述共聚物（ii）的分子量范围为约100,000至3,000,000。 共混物由共聚物（i）与共聚物（ii）的重量百分比的比例在20:80至80:20的范围内组成。 组合物还可任选地包括分散剂如钠盐或钾盐或磺化萘甲醛缩合物。
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公开(公告)号：US5046562A
公开(公告)日：1991-09-10
申请号：US645912
申请日：1991-01-22
摘要： A cementing composition useful in cementing oil, gas and water wells, comprising water, hydraulic cement and an effective amount of water soluble fluid loss additive comprised of a blend of a copolymer of acrylamide/vinyl imidazole in a weight percent ratio of from about 95:5 to 5:95, said copolymer having a molecular weight range of from about 100,000 to 3,000,000, and a terpolymer of acrylamide/acrylamidomethylpropane sulfonic acid sodium salt/vinyl imidazole in a weight percent ratio of 60:20:20, said terpolymer having a molecular weight range of from about 100,000 to 3,000.000. The blend is comprised of a weight percent ratio of copolymer to terpolymer in the range of 20:80 to 80:20. The composition can also optionally include a dispersant such as sodium or potassium salts or a sulfonated naphthalene formaldehyde condensate.
摘要翻译： 用于固井油，气和水井的固井组合物，包括水，水硬性水泥和有效量的水溶性流体损失添加剂，其由丙烯酰胺/乙烯基咪唑共聚物的共混物组成，其重量比为约95： 5至5:95，所述共聚物的分子量范围为约100,000至3,000,000，丙烯酰胺/丙烯酰胺基甲基丙磺酸钠盐/乙烯基咪唑的三元共聚物的重量比为60:20:20，所述三元共聚物具有 分子量范围为约100,000至3,000,000。 共混物由共聚物与三元共聚物的重量百分数比在20:80至80:20的范围内组成。 组合物还可任选地包括分散剂如钠盐或钾盐或磺化萘甲醛缩合物。
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公开(公告)号：US5025040A
公开(公告)日：1991-06-18
申请号：US535625
申请日：1990-06-11
CPC分类号： C09K8/46 , C04B24/16 , C04B24/2688 , C04B28/02 , C09K8/24 , C09K8/487 , C04B2103/46
摘要： A cementing composition useful in cementing oil, gas and water wells, comprising water, hydraulic cement and an effective amount of water soluble fluid loss additive comprised of a blend of a copolymer of acrylamide/vinyl imidazole in a weight percent ratio of from about 95:5 to 5:95, said copolymer having a molecular weight range of from about 100,000 to 3,000,000, and a terpolymer of acrylamide/acrylamidomethylpropane sulfonic acid sodium salt/vinyl imidazole in a weight percent ratio of 60:20:20, said terpolymer having a molecular weight range of from about 100,000 to 3,000,000. The blend is comprised of a weight percent ratio of copolymer to terpolymer in the range of 20:80 to 80:20. The composition can also optionally include a dispersant such as sodium or potassium salts or a sulfonated naphthalene formaldehyde condensate.
摘要翻译： 用于固井油，气和水井的固井组合物，包括水，水硬性水泥和有效量的水溶性流体损失添加剂，其由丙烯酰胺/乙烯基咪唑共聚物的共混物组成，其重量比为约95： 5至5:95，所述共聚物的分子量范围为约100,000至3,000,000，丙烯酰胺/丙烯酰胺基甲基丙磺酸钠盐/乙烯基咪唑的三元共聚物的重量比为60:20:20，所述三元共聚物具有 分子量范围为约100,000至3,000,000。 共混物由共聚物与三元共聚物的重量百分数比在20:80至80:20的范围内组成。 组合物还可任选地包括分散剂如钠盐或钾盐或磺化萘甲醛缩合物。
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公开(公告)号：US5092935A
公开(公告)日：1992-03-03
申请号：US484324
申请日：1990-02-26
申请人： Stefano C. Crema , Clare H. Kucera
发明人： Stefano C. Crema , Clare H. Kucera
CPC分类号： C04B24/16 , C04B24/2652 , C04B24/2688 , C04B28/02 , C09K8/46 , C09K8/487
摘要： A cementing composition useful in cementing oil, gas and water wells, comprising water, hydraulic cement and an effective amount of water soluble fluid loss additive comprised of a copolymer of acrylamide/vinyl formamide and derivatives thereof in a weight percent ratio of from about 95:5 to 5:95, said copolymer having a molecular weight range of from about 100,000 to 3,000,000. The composition can also optionally include a dispersant such as sodium or potassium salts or a sulfonated naphthalene formaldehyde condensate.
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公开(公告)号：US4676916A
公开(公告)日：1987-06-30
申请号：US803629
申请日：1985-12-02
申请人： Stefano C. Crema
发明人： Stefano C. Crema
CPC分类号： C09K8/74 , Y10S507/933
摘要： The subject invention relates to acidizing concentrates used to prepare acidizing systems for oil and gas recovery. The additives comprise:(a) a C.sub.4 -C.sub.12 aliphatic alcohol, and(b) a polyether nonionic surfactant having the following structural formula: ##STR1## wherein R is the residue of an aliphatic alcohol having 2 to 10 carbon atoms resulting from the oxyalkylation of a corresponding aliphatic alcohol having a functionality equal to n, and n has a value of 2 to 3; and wherein X and Y are numbers such that the ratio of X to Y is from 8:1 to 0.31 in the total molecular weight of the molecule is from 1,000 to 15,000.
摘要翻译： 本发明涉及用于制备用于油气回收的酸化体系的酸化浓缩物。 添加剂包括：（a）C 4 -C 12脂族醇，和（b）具有以下结构式的聚醚非离子表面活性剂：其中R是由烷氧基化产生的具有2至10个碳原子的脂族醇的残基 具有等于n的官能度的对应的脂族醇，n的值为2至3; 并且其中X和Y是分子总分子量中X与Y的比例为8:1至0.31的数值为1,000至15,000。
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公开(公告)号：US4609477A
公开(公告)日：1986-09-02
申请号：US698349
申请日：1985-02-05
申请人： Stefano C. Crema
发明人： Stefano C. Crema
CPC分类号： C09K8/592 , Y10S507/922
摘要： This invention relates to a liquid foaming additive comprising(a) a nonionic fluorochemical surfactant; and(b) a nonionic heteric polyether surfactant having at least two additive hydrogen atoms wherein components (a) and (b) are used in an effective amounts.The foaming additives are used to foam lower alkyl alcohols which are injected into oil and gas wells to break up underground formations which trap the oil and gas.
摘要翻译： 本发明涉及一种液体发泡添加剂，其包含（a）非离子含氟表面活性剂; 和（b）具有至少两个添加氢原子的非离子杂多聚醚表面活性剂，其中组分（a）和（b）以有效量使用。 发泡添加剂用于发泡注入油气井的低级烷基醇，以分解捕集油气的地下地层。
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