Invention Grant
- Patent Title: Electric heat and NGL startup for heavy oil
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Application No.: US15955125Application Date: 2018-04-17
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Publication No.: US10584569B2Publication Date: 2020-03-10
- Inventor: Siluni L. Gamage , T. J. Wheeler , Robert S. Redman
- 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

Abstract:
A method starts wells with electrical downhole heating and injects solvent(s) or NGL mixes as a preconditioning for a steam injection process. The downhole electrical heating and solvent injection recovers oil and reduces the reservoir pressure. Once oil has been recovered for a period of time and the operating pressure and temperature has been reduced, steam or steam and solvent(s) may be injected to produce high oil recoveries at faster production rates than downhole heating or downhole heating and solvent(s) injection alone. The method reduces heat losses due to steam injection at lower pressure and temperature and therefore, improves efficiency and lowers operating costs. Operating at lower pressure and temperature also reduces the risk of melting the permafrost and consequent well failure issues.
Public/Granted literature
- US20180328155A1 ELECTRIC HEAT & NGL STARTUP FOR HEAVY OIL Public/Granted day:2018-11-15
Information query
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