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1. (WO2017181265) RECOVERY OF SOLVENTS FROM MIXED PRODUCTION FLUIDS AND SYSTEM FOR DOING SAME

Pub. No.:    WO/2017/181265    International Application No.:    PCT/CA2017/000090
Publication Date: Fri Oct 27 01:59:59 CEST 2017 International Filing Date: Fri Apr 21 01:59:59 CEST 2017
IPC: B03D 1/12
Applicants: N-SOLV CORPORATION
Inventors: NENNIGER, John
HOLCEK, Ronald Gerry
EICHHORN, Mark Anthony
VERMA, Sandeep
FARRELL, Solimar J.
CHU, Lianjiang
Title: RECOVERY OF SOLVENTS FROM MIXED PRODUCTION FLUIDS AND SYSTEM FOR DOING SAME
Abstract:
A separation facility and process to separate a mixed fluid stream produced from an underground formation by means of an in situ solvent based hydrocarbon extraction process into separate process streams. The separation facility includes a first separation stage to separate any produced mixed fluids into at least a mixed water process stream and a heavy and light hydrocarbon process stream. There is a second separation stage to separate said heavy and light hydrocarbon process stream into a heavy hydrocarbon process stream and a bulk light hydrocarbon process stream. Then there is a bulk light hydrocarbon separation stage for separating said solvent from the balance of said bulk light hydrocarbon process stream. This stage may include the use of a two or more step separation to minimize energy consumption. Then there is a mixed water separation stage to separate said mixed water process stream into a lower density mixed hydrocarbon rich process stream and a higher density water process stream. Lastly there is a final hydrocarbon separation stage to separate at least some residual light hydrocarbons from said heavy hydrocarbon process stream.