专利名称：Method for remediation of damage in
regions of formations near injection wells
发明人：Varadarajan Dwarakanath,Robert Matthew
Dean,Will S. Slaughter,Dustin LukeWalker,Sophany Thach
申请号：US15647922申请日：20170712公开号：US10011757B2公开日：20180703
专利附图：
摘要：Aspects of the invention relate to compositions and methods that are used for
the remediation of near-wellbore damage in regions of formations near injection wells incommunication with subterranean reservoirs. The damage is caused by previous injectionof a polymer emulsion into the injection well. A specific aspect is a method of injectinginto the subterranean reservoir a composition containing an olefin sulfonate, a
sulfosuccinate, and a chemical selected from an alcohol alkoxylated sulfate, an alcoholalkoxylated carboxylate, or a combination thereof. The polymer emulsion is therebydissolved, cleaned and/or flushed away from the region near the injection well.
申请人：Chevron U.S.A. Inc.
地址：San Ramon CA US
国籍：US
代理人：Karen R. DiDomenicis
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