Research on Hydrothermal Modification of Heavy Oil

Abstract

Thermal recovery technology are widely used to enhance heavy oil recovery, the four most important of which are thermal modification, sub-critical water modification, catalytic modification and catalytic modification with hydrogen donor. These four kinds of technologies previously were studied separately, which were not systematically integrated together. This paper used high-temperature and high-pressure reactor to simulate heavy oil’s thermal recovery in static condition. By studying basic properties and structural parameters changed of four kinds of thermal recovery technologies, we have drawn the conclusion that The quality of crude oil dropped only by the use of TM, and The degrees of improvement were as follows: CMH> CM> SWM . H/C (Atomic ratio), fA, fN, fPand CI were important parameters, which could explain the extent of condensation and condensation direction. Long chain sulfur compound break down into small molecules, damaging the colloidal structure of heavy oil, improving the quality of heavy irreversible.