Invention Grant
- Patent Title: Solvents and NCG-co-injection with tapered pressure
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Application No.: US15968087Application Date: 2018-05-01
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Publication No.: US10648308B2Publication Date: 2020-05-12
- Inventor: Bo Chen , Thomas James Wheeler , Pradeep Ananth Govind
- Applicant: CONOCOPHILLIPS COMPANY
- Applicant Address: US TX Houston
- Assignee: ConocoPhillips Company
- Current Assignee: ConocoPhillips Company
- Current Assignee Address: US TX Houston
- Agency: Boulware & Valoir
- Main IPC: E21B43/24
- IPC: E21B43/24 ; E21B43/16 ; C09K8/594 ; C09K8/592

Abstract:
A variation of expanding solvent steam assisted gravity drainage (ES-SAGD) production of heavy oil wherein steam and hydrocarbon solvent are co-injected into a heavy oil reservoir and water, hydrocarbon solvent and heavy oil are produced by gravity drainage until the steam chamber is well developed or until oil recovery reaches about 20-30% of oil in place. At that time, the wells are switched to a lateral sweep using non-condensible gas (NSG) and steam co-injection, where more hydrocarbon solvent is recovered than is recovered with ES-SAGD used alone and where the cumulative steam to oil ratio is reduced over using -ES-SAGD alone.
Public/Granted literature
- US20190017361A1 SOLVENTS AND NCG-CO-INJECTION WITH TAPERED PRESSURE Public/Granted day:2019-01-17
Information query
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