Investigation of Unresolved Interface “Rag Layer” in Athabasca Oil Sand Bitumen In Situ Recovery
Evgeniya Hristova,
Stanislav R. Stoyanov,
Richard McFarlane
et al.
Abstract:Steam-assisted gravity drainage (SAGD), the leading commercial in situ bitumen recovery process, involves the underground injection of steam and produces at the well head a hot fluid containing water, hydrocarbons, and sand. This fluid is subjected to separation by diluent addition and gravity in several parallel treaters. Occasionally, the separation may be disrupted in one or few treaters by the occurrence of an unresolved interface or "rag layer" while continuing without disruption in the rest of the treate… Show more
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