Patent ID: 9102864
Filing Date: 2015-08-11
Classification: C09K,C10G,E21B,Y10T

Abstract:
1. A method for increasing recovery of hydrocarbon-containing organic matter from a production well coupled to a hydrocarbon-containing sub-surface formation, the subsurface formation comprising hydrocarbon-containing material by contacting the hydrocarbon-containing organic matter with a substantially surfactant-free non-aqueous hydrocarbon-extracting composition comprising the steps of: providing an injection well, said injection being in fluid communication with the sub-surface formation; providing said substantially surfactant-free non-aqueous hydrocarbon-extracting composition, wherein said composition consists essentially of a turpentine liquid; injecting the substantially surfactant-free non-aqueous hydrocarbon-extracting composition through the injection well and into the formation, wherein the substantially surfactant-free non-aqueous hydrocarbon-extracting composition and the hydrocarbon-containing organic matter from the hydrocarbon containing sub-surface formation form an extraction mixture comprising at least a portion of the hydrocarbon-containing organic matter extracted into turpentine liquid; recovering the extraction mixture from the formation through the production well; and separating the extraction mixture to produce a hydrocarbon product stream and a hydrocarbon-extracting liquid stream.