石油磺酸盐提高油汽比技术在稠油油田的应用  

Application of mahogany sulfonate to enhance oil gas ratio in heavy oilfield

作　　者：刘先勇[1] 梁栋[2] 顾海红[1] 孙宁[1] 王明波[3] 李耀[1] 

机构地区：[1]胜利油田分公司滨南采油厂,山东滨州256600 [2]胜利石油管理局科技处,山东东营257061 [3]中国石油大学,山东青岛266555

出　　处：《断块油气田》2010年第1期63-65,共3页Fault-Block Oil & Gas Field

基　　金：中国石油化工股份公司2005-2007年重点科研项目"胜利石油磺酸盐应用研究"(P05046)部分成果

摘　　要：胜利油田稠油及超稠油开采主要以蒸汽吞吐为主,不同油田均存在注汽压力高、注汽干度低、吞吐后采收率低等现象,而油水之间的界面张力是影响开发的主要因素。针对这一问题,应用由胜利原料油制备出具有复杂结构的阴离子石油磺酸盐体系,提高了稠油油藏开采效果。通过确定磺酸盐体系的构成,以及对其成品耐温抗盐性能评价,表明该磺酸盐体系能够较好适应单家寺油田的开发需要,耐温抗盐性能均能达到生产要求。通过高温岩心驱替实验得出石油磺酸盐体系能够有效降低注蒸汽压力和岩心采收率。单家寺油田现场试验5口井,平均增油量8.5 t.d-1,油汽比上升0.311,效果较好。Steam stimulation is the key development method of heavy oil and super-heavy oil development in Shengli Oilfield. Yet the disadvantages of such a method is obvious with high steam injecting pressure, low steam volume fraction, low recovery efficiency after the stimulation. The interracial tension between oil and water is the key influencing factor that affects the recovery efficiency. The mahogany suffonate made from stock oil of Shengli Oilfield is applied to the EOR operation of heavy oil reservoir, which is a kind of complex anionic surfactant and it can greatly reduce the interracial tension between crude oil and formation water. The formation of the mahogany sulfonate system is determined and the temperature stability and salt resistance performances are evaluated, which show that the sulfonates system is better adapted to the development needs of Shanjiasi Oiffield and the salt resistance and temperature stability can both achieve production requirements. Core displacement tests show that the mahogany sulfonate system can lower the steam injecting pressure and increase core recovery efficiency. Field tests in 5 wells of Shanjiasi Oilfield in 2007 showed an average oil output of 8.5 tons and oil gas ratio of 0.311. Good effect has been obtained.

关 键 词：石油磺酸盐体系 评价 稠油 

分 类 号：TE345[石油与天然气工程—油气田开发工程]