辽河稠油注空气催化氧化降黏实验研究  

Experimental Study on the Viscosity Reduction of Liaohe Heavy Oil by Catalytic Air Oxidation

作　　者：唐晓东[1,2] 崔盈贤[2] 何柏[3] 刘全洲 孟科全[2] 

机构地区：[1]油气藏地质及开发工程国家重点实验室(西南石油大学),四川成都610500 [2]西南石油大学化学化工学院,四川成都610500 [3]重庆科技学院化学化工学院,重庆401331 [4]中国石油吐哈油田分公司,新疆鄯善838202

出　　处：《油田化学》2008年第4期316-319,共4页Oilfield Chemistry

基　　金：中国石油天然气集团公司中青年创新基金项目"空气缓和催化氧化裂解稠油油层就地生成烟道气高效采油技术基础研究"(项目编号06Z1015);国家863计划项目"海上稠油注空气缓和催化氧化采油技术研究"(项目编号2006AA09Z325)

摘　　要：基于前期研究结果,提出了使用专利水溶性催化剂SP-1(MeL型化合物)和降黏助剂R(复合无机盐)的注空气缓和催化氧化稠油降黏技术。在0.5升反应釜中进行辽河稠油催化氧化,以酸值和黏度(50℃,125 1/s)为测定参数,优选出了室内操作条件:SP-1加量0.2%,R加量1.4%,加水量60%,反应温度200℃,反应压力0.5 MPa,反应时间36小时。在该反应条件下辽河稠油样黏度由382.6 Pa.s降至23 mPa.s。模拟油田焖井条件,将反应时间延长至5天,氧化后稠油样黏度由43.55 Pa.s降至16 mPa.s,酸值由13.50 mg KOH/g降至6.13 mg KOH/g。模拟蒸汽吞吐油层条件,将反应压力提高至8 MPa,氧化5天后尾气含N295.37%,O21.63%,CO21.53%,其他气体1.47%,表明该催化反应中空气的利用率很高。图6参11。On the basis of authors＇ previous work with patented water soluble catalyst SP-1 of MeL type and visbreaking auxiliary R of mixed inorganic salt type used, a soft catalytic air oxidation technology is developed for in-situ viscosity reduction of Liaohe heavy crude oil （LHCO）. In catalytic air oxidation experiments conducted in a 0.5 L vessel with acid value and viscosity determinations （at 500C and 125 i/s） as erioteria, the reaction process parameters are optimized： SP-1 dosage 0.2%, R dosage 1.4%, water charge 60%, reaction temperature 200℃, reaction pressure 0.5 MPa, and reaction time duration 36 hrs. Under the optimal reaction conditions the viscosity of an oxidized LHCO sample is decreased from 382.6 Pa·s to 23 mPa·s. With reaction time prolonged to 5 days as in well shut-in with other parameters kept unchanged, the viscosity of an LHCO sample is decreased from 43.55 Pa＇s to 16 rnPa＇s and its acid value--from 13.50 to 6.13 mg KOH/g. When the reaction pressure in vessel is raised to 8 MPa to simulate a pay formation in a steam huffing-puffing well, 5 day oxidation of LHCO sample results in a residue gas, composed of 95.37 % N2, 1.63 % 02, 1.53% CO2, and 1.47% other gases, which indicates sufficient utilization of the air introduced in the catalytic oxidation.

关 键 词：稠油 空气催化氧化 催化水热裂解 降黏 反应条件 优化 蒸汽吞吐油层 

分 类 号：TE39[石油与天然气工程—油气田开发工程] TE624.41