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1.发明授权Equipment for dissolving polyacrylamide powder for obtaining an aqueous solution thereof for enhanced oil recovery 失效用于溶解聚丙烯酰胺粉末以获得其水溶液以提高采油率的设备
公开(公告)号：US4518261A
公开(公告)日：1985-05-21
申请号：US478884
申请日：1983-03-25
申请人： Yukihiko Sekimoto , Osamu Okamoto
发明人： Yukihiko Sekimoto , Osamu Okamoto
CPC分类号： B01F7/1635 , B01F15/0201 , B01F15/0272 , B01F3/1221 , B01F3/1271 , B01F5/0068 , B01F5/0074
摘要： Equipment for dissolving polyacrylamide powder to obtain an aqueous solution thereof for enhanced oil recovery comprisesfirst and second powder storage tanks for storing polyacrylamide powder under nitrogen atmosphere;a gas conveyor unit for carrying the polyacrylamide powder from the first storage tank to the second storage tank by nitrogen gas flow;a constant powder supply unit for receiving the polyacrylamide powder from the second storage tank, metering the powder, and sending the metered powder toa powder dispersion unit for dispersing in water the polyacrylamide powder.A first liquid supply unit sends the dispersion or solution of polyacrylamide powder obtained from the powder dispersion unit to a dissolution tank for completing dissolution of the polyacrylamide;and a second liquid supply unit transfers the polyacrylamide solution from the dissolution tank to a solution storage tank for storing the polyacrylamide solution.A filtration unit is connected in the liquid supply line between the dissolution tank and the solution storage tank; anda nitrogen gas supply system maintains the interiors of these units filled with nitrogen gas at a pressure higher than atmospheric pressure.
摘要翻译： 用于溶解聚丙烯酰胺粉末以获得其用于提高油回收率的水溶液的设备包括用于在氮气氛下储存聚丙烯酰胺粉末的第一和第二粉末储存罐; 用于通过氮气流将聚丙烯酰胺粉末从第一储罐运送到第二储罐的气体输送单元; 用于从第二储罐接收聚丙烯酰胺粉末的恒定粉末供应单元，计量粉末，并将计量粉末发送到分散在水中的粉末分散单元的聚丙烯酰胺粉末。 第一液体供应单元将从粉末分散单元获得的聚丙烯酰胺粉末的分散体或溶液发送到溶解槽，以完成聚丙烯酰胺的溶解; 并且第二液体供应单元将聚丙烯酰胺溶液从溶解槽转移到用于储存聚丙烯酰胺溶液的溶液储存罐。 过滤单元连接在溶解槽和溶液储罐之间的液体供应管线中; 并且氮气供给系统将这些单元的内部保持在高于大气压的压力下填充氮气。
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公开(公告)号：US4721577A
公开(公告)日：1988-01-26
申请号：US869624
申请日：1986-06-02
CPC分类号： C09K8/62 , C08K5/37 , C08K5/47 , Y10S507/922
摘要： A stabilized fracturing fluid and a method of stabilizing a fracturing fluid containing at least one of guar gum and its derivatives is disclosed, wherein at least one stabilizing compound selected from the thiol derivatives of heterocyclic compounds is added to the fracturing fluid. This method of stabilization prevents degradation of the fracturing fluid, i.e., reduction in its rheological properties at high temperatures and permits smooth practice of the fracturing operation.
摘要翻译： 公开了一种稳定的压裂液和稳定含有瓜尔胶及其衍生物中的至少一种的压裂液的方法，其中将至少一种选自杂环化合物的硫醇衍生物的稳定化合物加入压裂液中。 这种稳定的方法防止了压裂液的降解，即在高温下其流变特性的降低，并允许压裂操作的顺利实施。
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公开(公告)号：US4691013A
公开(公告)日：1987-09-01
申请号：US900954
申请日：1986-08-27
摘要： A process for producing a modified hydroxyethyl cellulose comprising the steps of:allowing hydroxyethyl cellulose to be swollen in a solvent; andmixing the hydroxyethyl cellulose swollen in the solvent, with a 2-mercapto benzimidazole compound having the formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 independently represent hydrogen, methyl, or ethyl, and X is hydrogen, an alkali metal, an alkaline earth metal, or ammonium.
摘要翻译： 一种制备改性羟乙基纤维素的方法，包括以下步骤：使羟乙基纤维素在溶剂中溶胀; 将溶剂中的羟乙基纤维素与具有式（I）的2-巯基苯并咪唑化合物混合：其中R 1，R 2，R 3和R 4独立地表示氢，甲基或乙基，X 是氢，碱金属，碱土金属或铵。
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公开(公告)号：US4661266A
公开(公告)日：1987-04-28
申请号：US755506
申请日：1985-07-16
CPC分类号： C09K8/90 , C09K8/528 , Y10S507/925
摘要： A completion and workover fluid which comprises an aqueous liquid medium containing hydroxyethyl cellulose, an inorganic salt selected from the group consisting of calcium chloride, calcium bromide and zinc bromide, and a component selected from the group consisting of the following components:(1) thiol derivatives of heterocyclic compounds;(2) thioamide derivatives;(3) at least one compound selected from the group consisting of thiuram disulfide compounds, thiuram monosulfide compounds and dithiocarbamate compounds;(4) benzothiazole; and(5) a copper compound and an iodine compound in combination.
摘要翻译： 一种完井和修井液，其包含含有羟乙基纤维素的水性液体介质，选自氯化钙，溴化钙和溴化锌的无机盐和选自以下组分的组分：（1）硫醇 杂环化合物的衍生物; （2）硫代酰胺衍生物; （3）至少一种选自秋兰姆二硫化物，秋兰姆单硫化物和二硫代氨基甲酸酯化合物的化合物; （4）苯并噻唑; 和（5）铜化合物和碘化合物的组合。
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公开(公告)号：US4614601A
公开(公告)日：1986-09-30
申请号：US719391
申请日：1985-04-02
CPC分类号： C09K8/22 , Y10S507/925
摘要： A completion and workover fluid is described, containing a soluble salt, a hydroxyethyl cellulose and at least one compound selected from 2-mercaptobenzimidazole compounds, 2-mercaptobenzothiazole compounds, 2-mercaptothiazoline and 2-thioimidazolidone.
摘要翻译： 描述了包含可溶性盐，羟乙基纤维素和至少一种选自2-巯基苯并咪唑化合物，2-巯基苯并噻唑化合物，2-巯基噻唑啉和2-硫代咪唑烷酮的化合物的完成和修复液。
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公开(公告)号：US4681690A
公开(公告)日：1987-07-21
申请号：US819329
申请日：1986-01-16
CPC分类号： C08L5/14 , C09K8/62 , Y10S507/922
摘要： A stabilized fracturing fluid and a method of stabilizing a fracturing fluid containing at least one of guar gum and a derivative thereof is disclosed, comprising adding at least one stabilizing compound selected from 2-mercaptobenzimidazole and 2-mercaptobenzothiazole compounds to the fracturing fluid. This stabilization prevents degradation of the fracturing fluid, i.e., reduction in its rheological properties at high temperatures and permits smoothly carrying out the fracturing operation.
摘要翻译： 公开了一种稳定的压裂液和稳定含有瓜尔胶及其衍生物中的至少一种的压裂液的方法，包括将至少一种选自2-巯基苯并咪唑和2-巯基苯并噻唑化合物的稳定化合物加入到压裂液中。 这种稳定化防止了压裂液的降解，即在高温下其流变特性的降低并且允许平稳地进行压裂操作。
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公开(公告)号：US4605505A
公开(公告)日：1986-08-12
申请号：US719388
申请日：1985-04-02
CPC分类号： C09K8/22
摘要： A drilling fluid is described, consisting essentially of sodium carboxymethyl cellulose, bentonite, water, and at least one compound selected from 2-mercaptobenzimidazole compounds, 2-mercaptobenzothiazole compounds, 2-mercaptothiazoline and 2-thioimidazolidone.
摘要翻译： 描述了一种基本上由羧甲基纤维素钠，膨润土，水和至少一种选自2-巯基苯并咪唑化合物，2-巯基苯并噻唑化合物，2-巯基噻唑啉和2-硫代咪唑烷酮的化合物组成的钻井液。
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