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- W2049672610 abstract "Abstract Single Well Steam Assisted Gravity Drainage (SW-SAGD) process was evaluated by closely examining performance of field projects in the public domain, physical modeling and numerical simulation. It was seen that in order to be economically acceptable, field implementation emphasizes the Single Well (SW) aspects (near well bore heating), as opposed to the SAGD aspects (creation of a large steam chamber). The reported steam-oil ratio of about one for SW-SAGD field projects includes contributions due to primary production. Obviously, the performance will be attractive where the primary production is strong. Presence of mobile water or gas in the vicinity of a target location will have a negative effect on performance. The economic performance can be stronger than that for primary and cyclic steam stimulation but perhaps not as strong as for a dual well steam assisted gravity drainage. Therefore targets should typically have a continuous pay thickness of 10 to 15 m. Potential improvements can be obtained from optimizing well bore configurations by way of reducing steam by-pass and extending the effective well length utilized for production during the process. Other optimizing ideas involve the use of gases as steam additives and injection-production rate scheduling. The process is essentially a variation of cyclical steam stimulation (CSS) rather than of SAGD. Using certain elements of the SW-SAGD process, one should be able to profitably modify the cyclic steam stimulation (CSS) process while using horizontal wells. Introduction The Single Well Steam Assisted Gravity Drainage (SW-SAGD) process is a steam injection based oil recovery process in which the same horizontal well is used for steam injection, as well as for oil production. Steam is injected through insulated tubing, whereas hot oil and condensed water are pumped to the surface through a separate tubing string. It was initially thought of as a variation of the dual well Steam Assisted Gravity Drainage process (SAGD). In SAGD, steam is injected via a horizontal well and heated oil and condensate produced via another horizontal well, placed directly underneath the injector. The main driving mechanism being gravity." @default.
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- W2049672610 date "2000-04-03" @default.
- W2049672610 modified "2023-10-14" @default.
- W2049672610 title "A Mechanistic Study of Single-Well Steam Assisted Gravity Drainage" @default.
- W2049672610 doi "https://doi.org/10.2118/59333-ms" @default.
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