轻质油低温氧化反应实验研究  

Experimental Study on Oxidation Reaction of Light Oil

作　　者：王杰祥[1] 夏金娜[1,2] 刘双龙 朱艳[1] 任文龙[1] 

机构地区：[1]中国石油大学(华东),山东青岛266580 [2]中油华北油田分公司,河北任丘062550 [3]中海油天津分公司,天津塘沽300450

出　　处：《特种油气藏》2012年第6期116-117,121,共3页Special Oil & Gas Reservoirs

基　　金：长庆油田横向课题"五里湾长6油藏空气泡沫驱提高采收率试验研究"部分内容(259581029)

摘　　要：低渗、特低渗油藏注水开采的采收率较低,而空气注入油藏后具有驱替作用和低温氧化作用,能有效提高采收率。为此,通过对长庆油田安234-47区块的油样进行注空气静态氧化实验,运用压力降法计算反应速率,通过改变压力、温度等外界条件,研究低温氧化反应的影响因素。结果表明,目标油藏可以发生低温氧化反应,注空气技术可行;耗氧速率受温度和压力的影响均较大;反应后原油黏度增加,物性变差。Oil recovery factor is low for low and extremely low permeability reservoirs when conducting water injection.The injection of air into reservoir can effectively enhance oil recovery because it can not only play a role in drainage but also in low temperature oxidation.Therefore,an experiment on stable low temperature oxidation with the oil sample taken from Block 234-47 of Changqing Oilfield and with air injection is conducted,in which reaction rate can be calculated by using pressure drop methods and the influence factors are studied with the variation in edge conditions,such as pressure and temperature.The study shows that LTO reaction can occur and air injection technique is feasible in the targeted reservoirs;oxygen consumption rate of LTO reaction is greatly affected by reservoir temperature and pressure;and oil viscosity increases and physical properties become poor after the reaction.

关 键 词：低渗油藏 低温氧化 反应速率 影响因素 长庆油田 

分 类 号：TE135[石油与天然气工程—油气勘探]