韩培慧,曹瑞波,刘海波,周泉,闫伟
HAN Peihui,CAO Ruibo,LIU Haibo,ZHOU Quan,YAN Wei

• 1:大庆油田有限责任公司勘探开发研究院
• 2:大庆油田有限责任公司采油工程研究院

摘要(Abstract)：

大庆油田聚合物驱后油层历经三次采油深度开发,采出程度高达56.7%,如何进一步大幅度提高采收率是世界级难题,亟需攻关四次采油技术。聚合物驱后储层物性和流体渗流特征分析结果表明,聚合物驱后储层经过聚合物驱和后续水驱的长期冲刷,形成了以高渗透性和低残余油饱和度为特征的优势渗流通道,造成驱替液的低效、无效循环。聚合物驱后油层仍有进一步挖潜的物质基础,但主要剩余储量潜力和优势渗流通道纵向上均分布在油层发育较好的葡Ⅰ2、葡Ⅰ3单元,中、低水洗段和优势渗流通道交互分布,并且厚油层内部夹层不发育,机械封堵和浅调剖均不见效,开采难度加大。针对聚合物驱后储层物性和流体渗流特征,研发了自适应复合驱油方法。物理模拟实验结果表明,聚合物驱后自适应复合驱可提高采收率15.3%,较三元复合驱多提高采收率5.1百分点,节省聚合物用量16%。
The reservoirs have gone through the deep development of tertiary oil recovery after the polymer flooding for Daqing Oilfield, their recovery factors are up to 56.7%. How to further greatly improve the oil recovery is a worldwide problem, so it is urgent to develop the advanced "the fourth enhanced oil recovery technique". The analyzed results of the reservoir physical properties and fluid seepage characteristics after the polymer flooding show that the reservoirs have gone through long-term flushing by the polymer flooding and subsequent water flooding, the dominant seepage channels have formed characterized by high permeability and low residual oil saturation, which result in the low-efficiency and invalid circulation of the displacing fluid. There are still a certain reserves for further potential tapping after the polymer flooding, but the main remained reserves potential and dominant seepage channels are both located in the much better oil layers of PⅠ2 and PⅠ3.The middle and low watered out intervals exist alternatively with the dominant seepage channels and there are not well developed interbeds in the inner part of the thick oil layers, so the mechanical plugging and shallow profile adjustment are not effective, so they are much more difficult to exploit. In the light of the reservoir physical properties and fluid seepage characteristics after the polymer flooding, the adaptive compound flooding method has been developed. The results of the physical simulating experiment show that the adaptive compound flooding after the polymer flooding can enhance the oil recovery by 15.3%, which is 5.1% more than that of ASP flooding and can save the polymer dosage by 16%.

关键词(KeyWords)： 聚合物驱后;油层特征;自适应;复合驱
after polymer flooding;oil reservoir characteristic;adaptive;compound flooding

Abstract:

Keywords:

基金项目(Foundation): 中国石油天然气股份公司科技重大专项“化学驱后提高采收率技术研究与试验”(2016E-0207)

作者(Author): 韩培慧,曹瑞波,刘海波,周泉,闫伟
HAN Peihui,CAO Ruibo,LIU Haibo,ZHOU Quan,YAN Wei

DOI: 10.19597/j.issn.1000-3754.201906068

参考文献(References)：

• [1]韩培慧,苏伟鹏,林海川,等.聚驱后不同化学驱提高采收率对比评价[J].西安石油大学学报(自然科学版),2011,26(5):44-48.HAN Peihui,SU Weipeng,LIN Haichuan,et al.Evaluation and comparison of different EOR techniques after polymer flooding[J].Journal of Xi'an Shiyou University(Natural Science),2011,26(5):44-48.
• [2]孙龙德,伍晓林,周万富,等.大庆油田化学驱提高采收率技术[J].石油勘探与开发,2018,45(4):636-645.SUN Longde,WU Xiaolin,ZHOU Wanfu,et al.Technologies of enhancing oil recovery by chemical flooding in Daqing Oilfield,NE China [J].Petroleum Exploration and Development,2018,45(4):636-645.
• [3]韩培慧,赵群,穆爽书,等.聚合物驱后进一步提高采收率途径的研究[J].大庆石油地质与开发,2006,25(5):81-84.HAN Peihui,ZHAO Qun,MU Shuangshu,et al.Study on further EOR after polymer flooding [J].Petroleum Geology & Oilfield Development in Daqing,2006,25(5):81-84.
• [4]李鹏华,李兆敏,赵金省,等.多段塞平行聚能提高聚合物驱后采收率实验研究[J].石油学报,2010,31(1):110-113.LI Penghua,LI Zhaomin,ZHAO Jinsheng,et al.Experimental study on multi-slugs parallel gathering energy for enhancing oil recovery after polymer flooding[J].Acta Petrolei Sinica,2010,31(1):110-113.
• [5]孙灵辉,刘卫东,赵海宁,等.聚驱后高弹性聚合物驱油方法探索[J].西南石油大学学报,2007,29(6):112-125.SUN Linghui,LIU Weidong,ZHAO Haining,et al.A probe into high elasticity HPAM flooding in post-polymer flooding[J].Journal of Southwest Petroleum University,2007,29(6):112-125.
• [6] 沈德煌,马德胜,聂凌云,等.聚合物驱后油藏蒸汽驱技术可行性研究[J].特种油气藏,2011,18(4):108-110.SHEN Dehuang,MA Desheng,NIE Lingyun,et al.Technical feasibility of steam flooding after polymer flooding [J].Special Oil & Gas Reservoirs,2011,18(4):108-110.
• [7]赵金省,李天太,张明,等.聚合物驱后氮气泡沫驱油特性及效果[J].深圳大学学报(理工版),2010,27(3):361-365.ZHAO Jinsheng,LI Tiantai,ZHANG Ming,et al.Study on the displacement characteristics of nitrogen foam flooding after polymer flooding [J].Journal of Shenzhen University(Science & Engineering),2010,27(3):361-365.
• [8]张继红,董欣,叶银珠,等.聚合物驱后凝胶与表面活性剂交替注入驱油效果[J].大庆石油学院学报,2010,34(2):85-88.ZHANG Jihong,DONG Xin,YE Yinzhu,et al.Effect of the gel and surfactant alternating injection after polymer flooding [J].Journal of Daqing Petroleum Institute,2010,34(2):85-88.
• [9]曹瑞波,韩培慧,高淑玲.不同驱油剂应用于聚合物驱后油层的适应性分析[J].特种油气藏,2012,19(4):100-104.CAO Ruibo,HAN Peihui,GAO Shuling.Reservoir adaptability analysis of different oil displacement agents in polymer flooding [J].Special Oil & Gas Reservoirs,2012,19(4):100-104.
• [10]高淑玲,邵振波,张景存.聚驱后续水驱阶段挖掘分流线剩余油进一步提高采收率的方法[J].大庆石油地质与开发,2006,25(3):88-89.GAO Shuling,SHAO Zhenbo,ZHANG Jingcun.A method for enhancing oil recovery by producing remaining oil at fluid diversion line at subsequent water flooding stage after post-polymer flooding [J].Petroleum Geology & Oilfield Development in Daqing,2006,25(3):88-89.
• [11]高淑玲.聚驱后剩余油分布规律及剩余储量潜力分析[J].大庆石油地质与开发,2011,30(5):125-129.GAO Shuling.Laws of residual oil distribution and the analysis of remained reserves potential after polymer flooding [J].Petroleum Geology & Oilfield Development in Daqing,2011,30(5):125-129.
• [12]王凤兰,王天智,李丽娟.萨中地区聚合物驱前后密闭取心井驱油效果及剩余油分析[J].大庆石油地质与开发,2004,23(2):59-60.WANG Fenglan,WANG Tianzhi,LI Lijuan.Analysis on the result and remaining oil of the sealed coring wells drilled before and after polymer flooding[J].Petroleum Geology & Oilfield Development in Daqing,2004,23(2):59-60.
• [13]刘海波.大庆油区长垣油田聚合物驱后优势渗流通道分布及渗流特征[J].油气地质与采收率,2014,21(5):69-72.LIU Haibo.Dominant flowing channels distribution and seepage characteristics after polymer flooding in Daqing Oilfield [J].Petroleum Geology and Recovery Efficiency,2014,21(5):69-72.
• [14]高淑玲.聚驱后残留聚合物对提高采收率的影响[J].大庆石油地质与开发,2014,33(6):113-117.GAO Shuling.Influences of the residual polymer on the enhanced recovery after the polymer flooding [J].Petroleum Geology & Oilfield Development in Daqing,2014,33(6):113-117.
• [15]徐婷,李秀生,张学洪,等.聚合物驱后提高原油采收率平行管试验研究[J].石油勘探与开发,2004,31(6):98-100.XU Ting,LI Xiusheng,ZHANG Xuehong,et al.Parallel-column experiments for enhancing oil recovery after polymer flooding [J].Petroleum Exploration and Development,2004,31(6):98-100.
• [16]王德民,程杰成,吴军政,等.聚合物驱油技术在大庆油田的应用[J].石油学报,2005,26(1):74-78.WANG Demin,CHENG Jiecheng,WU Junzheng,et al.Application of polymer flooding technology in Daqing Oilfield [J].Acta Petrolei Sinica,2005,26(1):74-78.
• [17]宋考平,杨二龙,王锦梅,等.聚合物驱提高驱油效率机理及驱油效果分析[J].石油学报,2004,25(3):71-74.SONG Kaoping,YANG Erlong,WANG Jinmei,et al.Mechanism of enhancing oil displacement efficiency by polymer flooding and driving effectiveness analysis [J].Acta Petrolei Sinica,2004,25(3):71-74.
• [18]张宏方,王德民,王立军,等.聚合物溶液在多孔介质中的渗流规律及其提高驱油效率的机理[J].大庆石油地质与开发,2002,21(4):57-60.ZHANG Hongfang,WANG Demin,WANG Lijun,et al.Flow laws of polymer solution in porous media and their mechanism on enhancing displacement efficiency [J].Petroleum Geology & Oilfield Development in Daqing,2002,21(4):57-60.
• [19]黄伟岗,郭平,徐艳梅.剩余油分布地质研究方法[J].西南石油学院学报,2005,27(3):5-7.HUANG Weigang,GUO Ping,XU Yanmei.Research on the remaining oil research by geology [J].Journal of Southwest Petroleum Institute,2005,27(3):5-7.
• [20]王正波,叶银珠,韩冬,等.聚合物驱后剩余油分布快速预测方法[J].大庆石油地质与开发,2011,30(1):148-152.WANG Zhengbo,YE Yinzhu,HAN Dong,et al.Rapidly forecasting method for residual oil distribution after polymer flooding [J].Petroleum Geology & Oilfield Development in Daqing,2011,30(1):148-152.
• [21]陆建林,李国强,樊中海,等.高含水期油田剩余油分布研究[J].石油学报,2001,22(5):48-52.LU Jianlin,LI Guoqiang,FAN Zhonghai,et al.Residual oil distribution research of high water-cut stage in an oilfield [J].Acta Petrolei Sinica,2001,22(5):48-52.
• [22]孙建英,方艳君.聚驱后剩余油分布及挖潜技术研究[J].大庆石油地质与开发,2005,24(4):37-39.SUN Jianying,FANG Yanjun.Remaining oil distribution and techniques for further development after polymer flooding [J].Petroleum Geology & Oilfield Development in Daqing,2005,24(4):37-39.
• [23]杨野.喇萨杏油田厚油层顶部挖潜可行性研究[J].大庆石油地质与开发,2009,28(6):181-186;YANG Ye.The feasibility research on remaining oil recovery in the top of thick beds in La-Sa-Xing Oilfield [J].Petroleum Geology & Oilfield Development in Daqing,2009,28(6):181-186;
• [24]于洪文.大庆油田北部地区剩余油分布研究[J].石油学报,1993,14(1):72-80.YU Hongwen.Study on remaining oil distribution in the north area of Daqing Oilfield[J].Acta Petrolei Sinica,1993,14(1):72-80.
• [25]郝春雷,刘永健,王大威.微生物采油技术用于聚驱后油藏的研究进展[J].微生物技术,2007,17(1):87-90.HAO Chunlei,LIU Yongjian,WANG Dawei.Advance of research for MEOR in oil reservoir after polymer flooding[J].Biotechnology,2007,17(1):87-90.
• [26]郭尚平,田根林,王芳,等.聚合物驱后进一步提高采收率的四次采油问题[J].石油学报,1997,18(4):49-53,137.GUO Shangping,TIAN Genlin,WANG Fang,et al.The problem of quaternary oil recovery succeeding a polymer flooding [J].Acta Petrolei Sinica,1997,18(4):49-53,137.
• [27]夏惠芬,王德民,刘中春,等.粘弹性聚合物溶液提高微观驱油效率的机理研究[J].石油学报,2001,22(4):60-65.XIA Huifen,WANG Demin,LIU Zhongchun,et al.Study on the mechanism of polymer solution with visco-elastic behavior increasing microscopic oil displacement efficiency [J].Acta Petrolei Sinica,2001,22(4):60-65.
• [28]杨付林,杨希志,王德民,等.高质量浓度聚合物驱油方法[J].大庆石油学院学报,2004,27(4):24-26.YANG Fulin,YANG Xizhi,WANG Demin,et al.A new enhanced oil recovery by high-concentration polymer flooding [J].Journal of Daqing Petroleum Institute,2004,27(4):24-26.
• [29]赵凤兰,侯吉瑞,李洪生,等.聚合物驱后二次聚驱可行性及质量浓度优化研究[J].中国石油大学学报(自然科学版),2010,34(4):102-106.ZHAO Fenglan,HOU Jirui,LI Hongsheng,et al.Study on feasibility of secondary polymer flooding and concentration optimization after polymer flooding[J].Journal of China University of Petroleum(Edition of Natural Science),2010,34(4):102-106.