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公开(公告)号:US07140438B2
公开(公告)日:2006-11-28
申请号:US10752752
申请日:2004-01-07
IPC分类号: E21B37/00 , E21B43/04 , E21B43/267 , E21B43/27
CPC分类号: C09K8/805 , C09K8/52 , Y10S507/906 , Y10S507/924 , Y10T428/2991 , Y10T428/2993 , Y10T428/2996
摘要: The present invention relates to methods and compositions for treating subterranean formations, and more specifically, to improved methods and compositions for generating acids for use downhole, for example, to at least partially degrade the acid-soluble portions of filter cakes deposited in subterranean formations. In one embodiment, the present invention provides a method of degrading an acid-soluble portion of a filter cake comprising contacting the acid-soluble portion of the filter cake with an acid generated from an orthoester.
摘要翻译: 本发明涉及用于处理地下地层的方法和组合物,更具体地,涉及用于产生在井下使用的酸的改进的方法和组合物,例如至少部分地降解沉积在地下地层中的滤饼的酸溶性部分。 在一个实施方案中,本发明提供降解滤饼的酸溶性部分的方法,包括使滤饼的酸溶性部分与由原酸酯产生的酸接触。