基于γ-Al_(2)O_(3)载体的高孔隙率Ni-Mo催化剂制备及催化特超稠油降黏效果评价  

Preparation of High-porosity Ni-Mo Catalyst Based on γ-Al_(2)O_(3) and Its Catalytic Effect on Ultra-heavy Oil Viscosity Reduction

作　　者：袁成东[1,2] 刘磊 IL’YASOV Il’dar R[5] 丁保东[3,4] 曹畅 周晓冬 VARFOLOMEEV Mikhail A[1,2] YUAN Chengdong;LIU Lei;IL’YASOV I’dar R;DING Baodong;CAO Chang;ZHOU Xiaodong;VARFOLOMEEV Mikhai A(Petroleum Engineering School,Southwest Petroleum University,Chengdu,Sichuan 610500,P R of China;Department of Petroleum Engineering,Kazan Federal University,Kazan 420008,Russia;Key Laboratory of Enhanced Oil Recovery for Carbonate Fracture-cave Reservoirs,China Petrochemical Corporation,Urumqi,Xinjiang 830011,P R of China;Northwest Oilfield Branch of China Petrochemical Corporation,Urumqi,Xinjiang 830011,P R of China;Department of Physical Chemistry,Kazan Federal University,Kazan 420008,Russia)

机构地区：[1]西南石油大学石油与天然气工程学院,四川成都610500 [2]俄罗斯喀山联邦大学石油工程系,喀山420008,俄罗斯 [3]中国石油化工集团公司碳酸盐岩缝洞型油藏提高采收率重点实验室,新疆乌鲁木齐830011 [4]中国石油化工股份有限公司西北油田分公司,新疆乌鲁木齐830011 [5]俄罗斯喀山联邦大学物理化学系,俄罗斯喀山420008

出　　处：《油田化学》2023年第3期503-508,共6页Oilfield Chemistry

基　　金：中国博士后科学基金“基于原油组分结构差异探讨原油氧化机理及催化氧化研究”(项目编号2018M631099);俄罗斯联邦科学和高等教育部在世界级研究中心“全球液态烃高效开发”发展计划框架内的协议(协议编号075-15-2022-299)。

摘　　要：塔河油田特超稠油在井筒掺稀降黏开采过程中掺稀比高、频繁上返异常,难以实现经济有效开采。针对塔河特超稠油高沥青质含量的特点,以1,3-丙二醇、仲钼酸铵和硝酸镍为原料,研发了一种基于γ-Al_(2)O_(3)载体的高孔隙度Ni-Mo催化剂,评价了其地面改质降黏效果。结果表明,三叶形γ-Al_(2)O_(3)催化剂载体具有圆柱形孔隙结构,孔隙直径以5~11 nm为主。Ni-Mo催化剂可以将特超稠油的黏度(50℃)从28 200 mPa·s降至298 mPa·s,降黏率为98.94%,密度从1.0070 g/mL降至0.8724 g/mL;同时,饱和烃的含量显著增加,胶质和沥青质的含量大幅降低。地面催化改质降黏与改质稀油回掺相结合的开采技术能有效降低特超稠油黏度,地面催化改质效果良好,可有效节约掺稀油用量,提升开采效果。The ultra-heavy oil in Tahe oilfield is currently produced by mixing light oil with ultra-heavy oil in wellbore to reduce viscosity.However,the high ratio of needed light oils and abnormal fluid production caused by uneven mixing lead to an inefficient production with high cost.Based on the characteristic of high asphaltene content in Tahe ultra-heavy oil,a high-porosity Ni-Mo catalyst based on γ-Al_(2)O_(3)carrier was synthesized using 1,3-propanediol,ammonium paramolybdate,and nickel nitrate as raw materials.Its catalytic effect on viscosity reduction was evaluated.The results showed that the trilobal γ-Al_(2)O_(3) catalyst carrier had a cylindrical pore structure.The pore diameter was mainly 5-11 nm.The Ni-Mo catalyst could reduce the viscosity(50℃)of ultra-heavy oil from 28200 mPa·s to 298 mPa·s.The viscosity reduction rate was 98.94%.In addition,it could reduce the density of ultra-heavy oil from 1.0070 g/mL to 0.8724 g/mL.Simultaneously,the content of saturated hydrocarbon increased significantly,while the content of resin and asphaltene decreased significantly.The catalytic ex-situ upgrading technology for viscosity reduction combined with reinjection of upgraded oil into wellbore could effectively reduce the viscosity of ultra-heavy oil.The catalytic ex-situ upgrading had a good effect,which could effectively save light oil consumption and improve the production efficiency.

关 键 词：特超稠油 氧化铝 Ni-Mo催化剂 催化改质 降黏 

分 类 号：TE345[石油与天然气工程—油气田开发工程]