Invention Grant
- Patent Title: Method for remediation of damage in regions of formations near injection wells
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Application No.: US15647922Application Date: 2017-07-12
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Publication No.: US10011757B2Publication Date: 2018-07-03
- Inventor: Varadarajan Dwarakanath , Robert Matthew Dean , Will S. Slaughter , Dustin Luke Walker , Sophany Thach
- Applicant: Chevron U.S.A. Inc.
- Applicant Address: US CA San Ramon
- Assignee: CHEVRON U.S.A. INC.
- Current Assignee: CHEVRON U.S.A. INC.
- Current Assignee Address: US CA San Ramon
- Agent Karen R. DiDomenicis
- Main IPC: E21B43/16
- IPC: E21B43/16 ; C09K8/58 ; C09K8/52 ; C09K8/03

Abstract:
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 in communication with subterranean reservoirs. The damage is caused by previous injection of a polymer emulsion into the injection well. A specific aspect is a method of injecting into the subterranean reservoir a composition containing an olefin sulfonate, a sulfosuccinate, and a chemical selected from an alcohol alkoxylated sulfate, an alcohol alkoxylated carboxylate, or a combination thereof. The polymer emulsion is thereby dissolved, cleaned and/or flushed away from the region near the injection well.
Public/Granted literature
- US20170355896A1 METHOD FOR REMEDIATION OF DAMAGE IN REGIONS OF FORMATIONS NEAR INJECTION WELLS Public/Granted day:2017-12-14
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