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公开(公告)号：US4822501A
公开(公告)日：1989-04-18
申请号：US59561
申请日：1987-06-05
CPC分类号： C09K8/584 , Y10S507/936
摘要： A method for the enhanced recovery of oil comprised of injecting into an oil containing formation an aqueous surfactant system comprised of a blend of an oil soluble amine, a lignin selected from the group consisting of lignosulfonates and sulfonated alkali and soda lignins, and a water soluble anionic or non-ionic surfactant and water; driving the surfactant system through the formation and producing the oil mobilized by the surfactant system. A surfactant composition useful for enhanced oil recovery methods comprised of an oil soluble amine, a lignin, and a water soluble anionic or non-ionic surfactant.
摘要翻译： 一种用于提高油回收率的方法，其包括将含有油溶性胺，选自木素磺酸盐和磺化碱和苏打木质素的木质素与水溶性 阴离子或非离子表面活性剂和水; 通过形成驱动表面活性剂体系并产生由表面活性剂体系起动的油。 用于由油溶性胺，木质素和水溶性阴离子或非离子表面活性剂组成的强化油采收方法的表面活性剂组合物。
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公开(公告)号：US4721161A
公开(公告)日：1988-01-26
申请号：US880452
申请日：1986-06-30
IPC分类号： C09K8/88 , E21B33/138
CPC分类号： C09K8/887
摘要： The permeability of an underground formation near a wellbore can be substantially decreased by the injection of one or more slugs of an aqueous solution containing an in situ forming gel of lignosulfonate and a monomer of acrylamide or acrylic acid, initiated by persulfate or hydroxylamine and a relatively small amount of a metal salt having a polyvalent cation. The gel can be formed in the formation by delaying the mixing of all of the gel components into the aqueous solution until just prior to injection or splitting up the components into two aqueous solutions so that they are not mixed until they are in the formation.
摘要翻译： 通过注入一个或多个含有木质素磺酸盐的原位形成凝胶的水溶液和由过硫酸盐或羟胺引发的丙烯酰胺或丙烯酸单体的水溶液的一个或多个絮状物，可以显着降低井筒附近的地下地层的渗透性， 少量具有多价阳离子的金属盐。 可以通过将所有凝胶组分混合到水溶液中直到刚好在注射之前或将组分分解成两种水溶液使得它们在混合形成之前才能形成凝胶。
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公开(公告)号：US4299284A
公开(公告)日：1981-11-10
申请号：US100683
申请日：1979-12-05
IPC分类号： C09K8/502 , C09K8/82 , E21B33/138 , E21B43/30 , E21B43/22
CPC分类号： C09K8/82 , C09K8/502 , E21B33/138 , E21B43/30
摘要： Disclosed is a method for conducting an enhanced oil recovery process comprising injecting an oil displacing fluid into an injection well and recovering petroleum displaced by the fluid from one or more spaced-apart production wells, by an improved method in which the sweep efficiency or horizontal conformance of the displacement process is increased. A fluid is injected into the producing well, which fluid has a viscosity not substantially greater than the viscosity of water at the conditions of injection, but which reacts with oil present in the formation, forming a viscous emulsion which restricts the flow of fluids through the portion of the formation contacted by the emulsion-forming fluid. As a result of this treatment, there is a reduction in tendency for the displaced and injected fluids to form cusps as they approach the production well, thereby failing to sweep substantial portions of the formation. The injected fluid contains one or more surfactants specifically tailored to form a viscous emulsion with the particular formation crude oil and formation water or brine exhibiting maximum viscosity at formation conditions. The viscous emulsion-forming fluid may be injected into all of a group of wells surrounding a central injection well in approximately equal amounts, for the purpose of improving sweep efficiency, or the treatment may be selectively applied to certain of the wells where the formation exhibits a preferred direction of permeability, or where for other reasons the pattern integrity is poor.
摘要翻译： 公开了一种用于进行增强的油回收过程的方法，包括将排油流体注入注入井并通过改进的方法回收由一个或多个间隔开的生产井中的流体排出的石油，其中扫掠效率或水平一致性 的位移过程增加。 流体被注入到生产井中，该流体在注入条件下的粘度基本上不大于水的粘度，但与地层中存在的油反应，形成粘性乳液，从而限制流体流过 由形成乳液的流体接触的形成部分。 作为这种处理的结果，当位移和注入的流体在接近生产井时形成尖峰的倾向减小，从而不能扫掠地层的大部分。 注入的流体含有一种或多种特别适于形成粘性乳液的表面活性剂，特别地层原油和地层水或盐水在形成条件下表现出最大的粘度。 粘性乳液形成流体可以以大致相等的量注入围绕中央注入井的所有一组井中，以提高扫掠效率，或者可以将处理选择性地施加到形成物表面的某些井 渗透性的优选方向，或者由于其他原因，图案完整性差。
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公开(公告)号：US4281714A
公开(公告)日：1981-08-04
申请号：US88682
申请日：1979-10-26
CPC分类号： C09K8/845 , C09K8/584 , Y10S507/936
摘要： Lithium salts are employed as sacrificial agents for use in surfactant flooding operations within subterranean petroleum reservoirs. They can be utilized within a preflush treatment and/or by incorporation within the surfactant slugs injected into the petroleum formation.
摘要翻译： 锂盐被用作用于地下石油储层中的表面活性剂淹没操作的牺牲剂。 它们可以在预冲洗处理和/或通过掺入注入到石油地层中的表面活性剂颗粒内使用。
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公开(公告)号：US4159037A
公开(公告)日：1979-06-26
申请号：US901387
申请日：1978-05-01
IPC分类号： C09K8/584 , E21B43/16 , E21B33/138 , E21B43/22
CPC分类号： E21B43/162 , C09K8/584
摘要： The conformance of an enhanced oil recovery process, including waterflood, surfactant or other chemicalized water flood process, in a formation containing at least two strata or zones of varying permeability, the permeability of one zone being at least 50 percent greater than the permeability of the other zone, is improved by flooding until the higher permeability zone has been depleted, after which an aqueous fluid is injected into the high permeability zone, said fluid having relatively low viscosity at the time of injection and containing a blend of surface active agents which promote the formation of a coarse viscous emulsion in the flow channels of the formation which reduces the permeability of the high permeability zone. After the permeability of the first zone has been reduced substantially, flooding may then be accomplished in the second zone which was originally not invaded by the injected oil recovery fluid. The surface active agents are individually tailored and the ratio of dissimilar surfactants balanced to exhibit optimum viscous emulsion formation properties. The optimum emulsifying surfactant comprises a mixture of an organic sulfonate such as petroleum sulfonate and a solubilizing co-surfactant such as an alkyl or alkylarylpolyalkoxy alkylene sulfonate and/or a low molecular weight alcohol.
摘要翻译： 在含有至少两层不同渗透性的地层或地层中，强化采油过程（包括水驱，表面活性剂或其他化学化水淹过程）的一致性，一个区域的渗透率比渗透率大至少50％ 其他区域通过淹水得到改善，直到较高渗透性区域已经耗尽，之后将水性流体注入到高渗透性区域中，所述流体在注射时具有相对较低的粘度并含有表面活性剂的混合物，其促进 在地层的流动通道中形成粗糙的粘性乳液，这降低了高渗透率区域的渗透性。 在第一区域的渗透性已经大大降低之后，可以在最初未被注入的油回收流体侵入的第二区域中实现溢流。 单独定制表面活性剂，并且不同表面活性剂的比例平衡以显示最佳的粘性乳液形成性质。 最佳乳化表面活性剂包括有机磺酸盐如石油磺酸盐和增溶助表面活性剂如烷基或烷基芳基聚烷氧基亚烷基磺酸盐和/或低分子量醇的混合物。
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公开(公告)号：US5169559A
公开(公告)日：1992-12-08
申请号：US813543
申请日：1991-12-26
CPC分类号： C09K8/90 , C09K8/60 , Y10S507/935
摘要： The invention is a method for forming a high viscosity gel by mixing about 0.9% to about 3.0% by weight of hydroxy propyl cellulose having an average molecular weight greater than about 1,000,000 about 0.4% to about 3.0% by weight of an alkali metal dodecyl sulfate in the ratio of about 3:1 to about 1:1.5 of cellulose to sulfate, and a brine having a salinity greater than about 20,000 ppm TDS.
摘要翻译： 本发明是通过将约0.9％至约3.0％重量的平均分子量大于约1,000,000约0.4％至约3.0％的羟基丙基纤维素与碱金属十二烷基硫酸盐 约3:1至约1:1.5的纤维素与硫酸盐的比例以及盐度大于约20,000ppm TDS的盐水。
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公开(公告)号：US5114599A
公开(公告)日：1992-05-19
申请号：US534839
申请日：1990-06-07
IPC分类号： C09K8/584
CPC分类号： C09K8/584 , Y10S507/936 , Y10S507/938
摘要： A method for the enhanced recovery of oil comprised of injecting into an oil containing formation an aqueous surfactant system comprised of a blend of an oil soluble amine, a lignin selected from the group consisting of lignosulfonates and sulfonated alkali and soda lignins, and a water soluble anionic or non-ionic surfactant and water; driving the surfactant system through the formation and producing the oil mobilized by the surfactant system. A surfactant composition useful for enhanced oil recovery methods comprised of an oil soluble amine, a lignin, and a water soluble anionic or non-ionic surfactant.
摘要翻译： 一种用于提高油回收率的方法，其包括将含有油溶性胺，选自木素磺酸盐和磺化碱和苏打木质素的木质素与水溶性 阴离子或非离子表面活性剂和水; 通过形成驱动表面活性剂体系并产生由表面活性剂体系起动的油。 用于由油溶性胺，木质素和水溶性阴离子或非离子表面活性剂组成的增强油采收方法的表面活性剂组合物。
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公开(公告)号：US5100567A
公开(公告)日：1992-03-31
申请号：US620687
申请日：1990-12-03
CPC分类号： C08K5/42 , C09K8/514 , C09K8/588 , C09K8/68 , C09K8/90 , Y10S507/922 , Y10S507/925 , Y10S507/935 , Y10S507/936
摘要： The invention is an aqueous shear-thickening composition comprising in one embodiment about 0.2% to about 1% by weight of hydroxypropyl cellulose having an average molecular weight between about 1,000,000 and about 1,300,000, about 0.1% to about 0.7% by weight of an alkali metal dodecyl sulfate in a ratio of about 2.5:1 to about 1.5:1 hydroxypropyl cellulose to alkali metal dodecyl sulfate, and water containing less than about 2000 ppm TDS.
摘要翻译： 本发明是一种水性剪切增稠组合物，其包括在一个实施方案中约0.2重量％至约1重量％的平均分子量为约1,000,000至约1,300,000，约0.1重量％至约0.7重量％的碱金属 约2.5:1至约1.5:1羟丙基纤维素与碱金属十二烷基硫酸盐的比例为十二烷基硫酸盐，以及含有小于约2000ppm TDS的水。
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公开(公告)号：US5076361A
公开(公告)日：1991-12-31
申请号：US579139
申请日：1990-09-07
摘要： The invention is a method for decreasing formation permeability in an underground formation around a wellbore by injecting an aqueous fresh water solution comprising about 0.9% to about 3.0% by weight of hydroxy propyl cellulose having an average molecular weight greater than about 1,000,000 and about 0.4% to about 3.0% by weight of an alkali metal dodecyl sulfate in the ratio of about 3:1 to about 1:1.5 of cellulose to sulfate, said formation must contain a connate brine having a salinity greater than about 20,000 ppm TDS, or an injected brine having a salinity greater than about 20,000 ppm TDS to mix and react with the aqueous solution to form a gel. The invention is also a method for forming a high viscosity gel by mixing hydroxy propyl cellulose, alkali metal dodecyl sulfate and sufficient salinity.
摘要翻译： 本发明是通过注入包含约0.9％至约3.0％重量的平均分子量大于约1,000,000和约0.4％的羟基丙基纤维素的水性淡水溶液来降低井筒周围的地下地层中的地层渗透性的方法， 至约3.0重量％的碱金属十二烷基硫酸盐，其比例为约3:1至约1:1.5的纤维素与硫酸盐，所述形成必须含有盐度大于约20,000ppm TDS的合生盐水，或注入 具有大于约20,000ppm盐度的盐水混合并与水溶液反应以形成凝胶。 本发明也是通过混合羟基丙基纤维素，碱金属十二烷基硫酸盐和足够的盐度来形成高粘度凝胶的方法。
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公开(公告)号：US4739041A
公开(公告)日：1988-04-19
申请号：US947226
申请日：1986-12-29
CPC分类号： C08H6/00 , B01F17/0028 , C09K8/584
摘要： The invention is a method of producing surfactants from lignin which comprises subjecting lignin to two reactions, alkylation with an alkyl chain having about 3 to about 24 carbon atoms at phenolic sites, and oxidation sufficient to break the lignin into smaller polymeric and monomeric units. The invention also includes using these lignin surfactants in surfactant floods for enhanced oil recovery.
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