-
公开(公告)号：US5674817A
公开(公告)日：1997-10-07
申请号：US949659
申请日：1992-11-19
CPC分类号： C09K8/528 , C09K8/62 , Y10S507/933
摘要： Methods and compositions for controlling iron in aqueous well fracturing fluids are disclosed. In accordance with the methods, ferric iron contained in a fracturing fluid is prevented from precipitating or otherwise disadvantageously reacting by adding a thioalkyl acid or derivative thereof to the fracturing fluid. The thioalkyl acid or derivative reduces ferric ion to ferrous ion which remains in solution at pH levels below about 7.5.
摘要翻译： 公开了用于控制含水井压裂液中铁的方法和组合物。 根据该方法，通过将硫代烷基酸或其衍生物加入到压裂液中，防止压裂液中所含的三价铁沉淀或以其他方式不利地发生反应。 硫代烷基酸或衍生物将铁离子还原成亚铁离子，其保留在溶液中，pH值低于约7.5。
-
公开(公告)号：US06225261B1
公开(公告)日：2001-05-01
申请号：US08073370
申请日：1993-06-07
IPC分类号： C09K300
CPC分类号： C09K8/528 , C09K8/74 , Y10S507/923 , Y10S507/932 , Y10S507/937
摘要： A composition and method for acidizing a formation in the presence of ferric ion, free sulfur and/or sulfides is disclosed. The composition employs a ferric ion reducing agent and a sulfide reactant separately or in combination. The ferric ion reducing agent is a thioalkyl acid. The sulfide reactant compounds include &agr;-diketones and saturated and &agr;-unsaturated cyclic ketones. In another aspect, the reducing activity of the thioalkyl acid is accelerated by the presence of a catalytic quantity of a compound or mixture of compounds which yield in acid solution cuprous ion, cupric ion or combinations thereof with iodide ion.
摘要翻译： 公开了一种在铁离子，游离硫和/或硫化物存在下酸化地层的组合物和方法。 该组合物分别或组合使用三价铁离子还原剂和硫化物反应物。 铁离子还原剂是硫代烷基酸。 硫化物反应物化合物包括α-二酮和饱和和α-不饱和环酮。 在另一方面，硫代烷基酸的还原活性通过催化量的化合物或化合物的混合物的存在而加速，其在酸性溶液中产生亚铜离子，铜离子或其与碘离子的组合。
-
公开(公告)号：US5622919A
公开(公告)日：1997-04-22
申请号：US556679
申请日：1995-11-13
CPC分类号： C09K8/74 , C09K8/528 , Y10S585/95
摘要： A composition and method for acidizing a formation in the presence of ferric ion, free sulfur and/or sulfides is disclosed. The composition employs a ferric ion reducing agent and a sulfide reactant separately or in combination. The ferric ion reducing agent is a thioalkyl acid. The sulfide reactant compounds include .alpha.-diketones and saturated and .alpha.-unsaturated cyclic ketones. In another aspect, the reducing activity of the thioalkyl acid is accelerated by the presence of a catalytic quantity of a compound or mixture of compounds which yield in acid solution cuprous ion, cupric ion or combinations thereof with iodide ion.
摘要翻译： 公开了一种在铁离子，游离硫和/或硫化物存在下酸化地层的组合物和方法。 该组合物分别或组合使用三价铁离子还原剂和硫化物反应物。 铁离子还原剂是硫代烷基酸。 硫化物反应物化合物包括α-二酮和饱和和α-不饱和环酮。 在另一方面，硫代烷基酸的还原活性通过催化量的化合物或化合物的混合物的存在而加速，其在酸性溶液中产生亚铜离子，铜离子或其与碘离子的组合。
-
公开(公告)号：US5058678A
公开(公告)日：1991-10-22
申请号：US589568
申请日：1990-09-28
申请人： Walter R. Dill , James L. Lane, Jr.
发明人： Walter R. Dill , James L. Lane, Jr.
CPC分类号： C09K8/78 , C09K8/528 , Y10S507/934
摘要： An aqueous acidic composition useful for conducting a formation acidizing method is disclosed. The composition, which is comprised of a blend of acetic acid, formic acid, a fatty alkyl quaternary ammonium salt, a fatty aralkyl quaternary ammonium salt and an alkanoic and/or alkenoic acid having at least four carbon atoms and at least two alcoholic hydroxyl groups per molecule, resists the formation of sludge, and insoluble ferric and calcium compounds.
摘要翻译： 公开了一种用于进行地层酸化方法的含水酸性组合物。 该组合物由乙酸，甲酸，脂肪烷基季铵盐，脂肪芳烷基季铵盐和具有至少四个碳原子和至少两个醇羟基的链烷酸和/或链烯酸的共混物组成 每分子，抵抗污泥的形成和不溶性的三价铁和钙化合物。
-
5.发明授权
公开(公告)号：US5084192A
公开(公告)日：1992-01-28
申请号：US683148
申请日：1991-04-10
申请人： Walter R. Dill , James L. Lane, Jr.
发明人： Walter R. Dill , James L. Lane, Jr.
CPC分类号： C09K8/78 , C09K8/528 , Y10S507/93 , Y10S507/933
摘要： An aqueous acidic composition useful for conducting a formation acidizing method is disclosed. The composition, which is comprised of a blend of acetic acid, formic acid, a fatty alkyl quaternary ammonium salt, a fatty aralkyl quaternary ammonium salt and an alkanoic and/or alkenoic acid having at least four carbon atoms and at least two alcoholic hydroxyl groups per molecule, resists the formation of sludge, and insoluble ferric and calcium compounds.
摘要翻译： 公开了一种用于进行地层酸化方法的含水酸性组合物。 该组合物由乙酸，甲酸，脂肪烷基季铵盐，脂肪芳烷基季铵盐和具有至少四个碳原子和至少两个醇羟基的链烷酸和/或链烯酸的共混物组成 每分子，抵抗污泥的形成和不溶性的三价铁和钙化合物。
-
-
-
-
搜索结果
5 条记录 (耗时 0.032 秒)
