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公开(公告)号：US07431088B2
公开(公告)日：2008-10-07
申请号：US11336475
申请日：2006-01-20
IPC分类号： E21B43/27
摘要： An improved acidization method is provided in which an aqueous solution comprising one or more esters or polyesters of lactic acid or of glycerol is placed in a well where the esters or polyesters undergo hydrolysis. The hydrolysis of the esters or polyesters occurs at a slower reaction rate than that of several other known acidization esters, such as diethyleneglycol diformate, at temperatures higher than 60° C. or even higher than 100° C. Thus, the solution may be distributed substantially throughout a region in the well where acidization is required before hydrolysis is completed, despite being exposed to relatively high temperatures.
摘要翻译： 提供了一种改进的酸化方法，其中将包含一种或多种乳酸或甘油的酯或聚酯的水溶液置于酯或聚酯经历水解的孔中。 在高于60℃或甚至高于100℃的温度下，酯或聚酯的水解反应速度比几种其它已知的酸化酯如二甘醇二甲酸酯的反应速率慢。因此，溶液可以分布 基本上遍及在水解完成之前需要酸化的井中的一个区域，尽管暴露于较高的温度。
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2.发明授权公开(公告)号：US07455112B2
公开(公告)日：2008-11-25
申请号：US11536833
申请日：2006-09-29
IPC分类号： E21B43/27
CPC分类号： C09K8/74
摘要： Of the many methods provided, in one embodiment, a method is provided that comprises: providing an acid-generating fluid that comprises an acid-generating compound, a base fluid, and a salt; placing the acid-generating fluid in a well bore penetrating a subterranean formation; allowing the salt to affect the hydrolysis of the acid-generating compound; and allowing the acid-generating compound to produce an acid that then acidizes at least a portion of the formation or damage contained therein.
摘要翻译： 在所提供的许多方法中，在一个实施方案中，提供了一种方法，其包括：提供包含产酸化合物，基础液和盐的产酸流体; 将产酸流体置于穿透地层的井眼中; 允许盐影响产酸化合物的水解; 并且允许产酸化合物产生酸，然后酸化其中所含的形成或损伤的至少一部分。
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3.发明申请公开(公告)号：US20080078549A1
公开(公告)日：2008-04-03
申请号：US11536833
申请日：2006-09-29
CPC分类号： C09K8/74
摘要： Of the many methods provided, in one embodiment, a method is provided that comprises: providing an acid-generating fluid that comprises an acid-generating compound, a base fluid, and a salt; placing the acid-generating fluid in a well bore penetrating a subterranean formation; allowing the salt to affect the hydrolysis of the acid-generating compound; and allowing the acid-generating compound to produce an acid that then acidizes at least a portion of the formation or damage contained therein.
摘要翻译： 在所提供的许多方法中，在一个实施方案中，提供了一种方法，其包括：提供包含产酸化合物，基础液和盐的产酸流体; 将产酸流体置于穿透地层的井眼中; 允许盐影响产酸化合物的水解; 并且允许产酸化合物产生酸，然后酸化其中所含的形成或损伤的至少一部分。
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