Aquathermolysis of conventional heavy oil with superheated steam  

作　　者：Song Guangshou Zhou Tiyao Cheng Linsong Wang Yunxian Tian Guoqing Pi Jian Zhang Zheng 

机构地区：[1]Department of Geology, Northwest University, Xi＇an, Shaanxi 710069, China [2]Key Laboratory of Petroleum Engineering, Ministry of Education, China University of Petroleum, Beijing 102249, China [3]China National Offshore Oil Co. Ltd-Tianjin, Tianjin 300452, China [4]NO.6 Oil Production Plant, PetroChina Changqing Oilfield Company, Xi＇an, Shaanxi 710018, China [5]Research Center, China National Offshore Oil Corporation, Beijing 100027, China

出　　处：《Petroleum Science》2009年第3期289-293,共5页石油科学（英文版）

基　　金：support from the National Natural Science Foundation of China(Grant No.50276040)is gratefully acknowledged.

摘　　要：This paper presents a new aquathermolysis study of conventional heavy oil in superheated steam. A new high temperature autoclave was designed, where volume and pressure could be adjusted. Aquathermolysis was studied on two different conventional heavy oil samples under different reaction times and temperatures. Experimental results show that aquathermolysis does take place for conventional heavy oil. As reaction time increases, the oil viscosity reduces. However, the reaction will reach equilibrium after a certain period of time and won＇t be sensitive to any further reaction time any more. Analysis shows that, while resin and asphaltenes decrease, saturated hydrocarbons and the H/C ratio increase after reaction. The main mechanism of aquathermolysis includes hydrogenization, desulfuration reaction of resin and asphaltenes, etc.This paper presents a new aquathermolysis study of conventional heavy oil in superheated steam. A new high temperature autoclave was designed, where volume and pressure could be adjusted. Aquathermolysis was studied on two different conventional heavy oil samples under different reaction times and temperatures. Experimental results show that aquathermolysis does take place for conventional heavy oil. As reaction time increases, the oil viscosity reduces. However, the reaction will reach equilibrium after a certain period of time and won＇t be sensitive to any further reaction time any more. Analysis shows that, while resin and asphaltenes decrease, saturated hydrocarbons and the H/C ratio increase after reaction. The main mechanism of aquathermolysis includes hydrogenization, desulfuration reaction of resin and asphaltenes, etc.

关 键 词：Conventional heavy oil superheated steam AQUATHERMOLYSIS viscosity reduction 

分 类 号：TE357.44[石油与天然气工程—油气田开发工程] S226.6[农业科学—农业机械化工程]