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http://dx.doi.org/10.14478/ace.2014.1014

Effect of CO2 Injection in SAGD Process for Oil Sand Bitumen Recovery  

Song, Byung Jin (Division of Green Chemistry & Engineering Research, Korea Research Institute of Chemical Technology (KRICT))
You, Nansuk (Division of Green Chemistry & Engineering Research, Korea Research Institute of Chemical Technology (KRICT))
Lee, Jae Hoon (Korea Energy Management Corporation)
Lee, Chul Wee (Division of Green Chemistry & Engineering Research, Korea Research Institute of Chemical Technology (KRICT))
Publication Information
Applied Chemistry for Engineering / v.25, no.3, 2014 , pp. 262-267 More about this Journal
Abstract
SAGD (steam assisted gravity drainage) process is the most commonly used in-situ technology for the recovery of bitumen from oil sand. It was investigated that the effects of different additives on bitumen recovery rate from oil sand in SAGD process among many possible mechanisms studied throughout the study. Bitumen recovery from thin layer oil sand reservoirs was simulated by using an experimental SAGD apparatus with scale of 150:1. To improve the simulation accuracy of thin layer oil reservoir, we have attached geological model (GM). Oil sand was simulated by using a mixture of extra heavy oil and glass beads with a diameter of 1.5 mm. $CO_2$ was used as an additive and the evolution of steam chambers were closely monitored, and the effects of $CO_2$ as an additive was investigated. Two types of injection methods were tested; continuous ($cCO_2$-SAGD) and sequential interruption ($sCO_2$-SAGD) $CO_2$ injection. For the $sCO_2$-SAGD experiment, it was observed that the recovery rates and CSOR were efficiently improved control experiment from 60.2% to 69.3% and 7.1 to 6.0, respectively, whereas $cCO_2$-SAGD experiment decreased from 60.2% to 57.6% and 7.1 to 7.3.
Keywords
Oil sand; SAGD; Bitumen; Additives; $CO_2$;
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Times Cited By KSCI : 6  (Citation Analysis)
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