页岩油低温氧化特征及其影响因素研究  

Investigation into low-temperature oxidation characteristics ofshale oil and its influencing factors

作　　者：潘竟军 赵帅[2] 陈森 张莉伟 PAN Jing-jun;ZHAO Shuai;CHEN Sen;ZHANG Li-wei(Research Institute of Technology,Petrochina Xinjiang Oilfield Company,Karamay 834000,China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]中石油新疆油田工程技术研究院,新疆克拉玛依834000 [2]西南石油大学油气藏地质与开发工程国家重点实验室,四川成都610500

出　　处：《应用化工》2022年第S02期79-83,共5页Applied Chemical Industry

基　　金：中国博士后科学基金第69批面上资助二等(2021M692696)。

摘　　要：研究系统评价了温度、压力和页岩岩屑对新疆油田吉木萨尔上甜点区块页岩油低温氧化特征的影响。结果表明,当温度从100℃升至120℃,页岩油耗氧速率增幅最为明显;与原油相比,不同温度氧化油的黏度仅略有增加,不会影响页岩油在油藏中的流动性。建议将该油藏近井地带温度加热至120℃,从而明显提升页岩油低温氧化速率,使低温氧化阶段更易过渡到高温燃烧阶段。35 MPa下页岩油耗氧速率较高;高于35 MPa后,压力对页岩油低温氧化反应速率的影响有限。页岩岩屑能够明显提高页岩油低温氧化反应速率,使得氧化油黏度和O元素含量上升。This study systematically evaluated the effects of temperature,pressure,and shale detritus on the LTO characteristics of one shale oil collected from the upper dessert block of Jimsar,Xinjiang Oilfield.The results show that when the temperature rises from 100℃ to 120℃,the oxygen consumption rate of shale oil increases most obviously;compared with the crude oil,the viscosity of oxidized oil at different temperatures only slightly increases,which will not affect the mobility of shale oil in the reservoir.It is suggested that the near-well zone temperature of the oil reservoir is heated to 120℃,thereby significantly increasing the LTO of shale oil and making it easier to transition from the LTO stage to the high-temperature combustion stage.The oxygen consumption rate of shale oil is high at 35 MPa;when the pressure exceeds 35 MPa,the influence of pressure on the LTO rate of shale oil is limited.Shale detritus can significantly increase the LTO rate of shale oil,which increases the viscosity and O content of oxidized oil.

关 键 词：页岩油 低温氧化 注空气 温度 压力 页岩岩屑 

分 类 号：TE345[石油与天然气工程—油气田开发工程]