Solvent-Based and Solvent-Assisted Recovery Processes: State of the Art
| Autor: | Bita Bayestehparvin, S. M. Farouq Ali, Jalal Abedi |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
food and beverages Energy Engineering and Power Technology Geology 02 engineering and technology 010502 geochemistry & geophysics complex mixtures 01 natural sciences humanities Solvent Fuel Technology 020401 chemical engineering Chemical engineering Solvent based State (computer science) 0204 chemical engineering 0105 earth and related environmental sciences |
| Zdroj: | SPE Reservoir Evaluation & Engineering. 22:29-49 |
| ISSN: | 1930-0212 1094-6470 |
| Popis: | Summary Steam injection is a widely used oil-recovery method that has been commercially successful in many types of heavy-oil reservoirs, including the oil sands of Alberta, Canada. Steam is very effective in delivering heat that is the key to heavy-oil mobilization. In the distant past in California, and also recently in Alberta, solvents were/are being used as additives to steam for additional viscosity reduction. The current applications are in field projects involving steam-assisted gravity drainage (SAGD) and cyclic steam stimulation (CSS). The past and present projects using solvents alone or in combination with steam are reviewed and evaluated, including enhanced solvent SAGD (ES-SAGD) and liquid addition to steam for enhancing recovery (LASER). The use of solvent in other processes, such as effective solvent extraction incorporating electromagnetic heating (ESEIEH) and after cold-heavy-oil production with sand (CHOPS), are also reviewed. The theories behind the use of solvents with steam are outlined. These postulate additional heavy-oil/bitumen mobilization; oil mobilization ahead of the steam front; and oil mobilization by solvent dispersion caused by frontal instability. The plausibility of the different approaches and solvent availability and economics are also discussed. |
| Databáze: | OpenAIRE |
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