MISCIBLE OIL RECOVERY PROCESS

MISCIBLE OIL RECOVERY PROCESS A miscible flooding process for oil recovery employs a multiple contact miscible solvent such as carbon dioxide and an additive such as butane which lowers the minimum miscibility pressure of the oil/solvent system. The additive is injected in a slug with a solvent, pre...

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Bibliographische Detailangaben
Hauptverfasser:	HARTMAN, KATHY J, SHU, WINSTON R
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES CHEMISTRY DYES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MINING MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PAINTS POLISHES
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Beschreibung
Zusammenfassung:	MISCIBLE OIL RECOVERY PROCESS A miscible flooding process for oil recovery employs a multiple contact miscible solvent such as carbon dioxide and an additive such as butane which lowers the minimum miscibility pressure of the oil/solvent system. The additive is injected in a slug with a solvent, preferably followed by a slug of water to improve sweep, after which solvent alone may be injected to extract residual additive and oil by miscible extraction. A number of slugs of solvent, either by itself or with the additive may be injected, with intervening slugs of water and finally, water injection may be made to termination.