Invention Grant
- Patent Title: Injectivity and production improvement in oil and gas fields
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Application No.: US16640325Application Date: 2019-05-13
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Publication No.: US11352854B2Publication Date: 2022-06-07
- Inventor: Alexandra Clare Morrison , Hui Zhou , William Walter Shumway
- Applicant: Halliburton Energy Services, Inc.
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agency: McGuireWoods LLP
- International Application: PCT/US2019/032020 WO 20190513
- International Announcement: WO2020/231400 WO 20201119
- Main IPC: E21B37/08
- IPC: E21B37/08 ; C09K8/524

Abstract:
Methods and systems for treating wellbores. An example method includes introducing an acidic treatment fluid into the well; wherein the acidic treatment fluid comprises an acid and a first aqueous base fluid. The method further includes introducing an enzymatic treatment fluid into the well; wherein the enzymatic treatment fluid comprises an enzyme and a second aqueous base fluid. The method additionally includes contacting the filter cake with the acidic treatment fluid and contacting the filter cake with the enzymatic treatment fluid after the filter cake was contacted with the acidic treatment fluid.
Public/Granted literature
- US20210396098A1 INJECTIVITY AND PRODUCTION IMPROVEMENT IN OIL AND GAS FIELDS Public/Granted day:2021-12-23
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