海上J油田自适应复合调驱技术研究与应用  

Research and application of adaptive composite regnlation and flooding technology in offshore J oilfield

作　　者：赵军 郑继龙[2] 陈士佳 刘浩洋 吴彬彬 ZHAO Jun;ZHENG Jilong;CHEN Shijia;LIU Haoyang;WU Binbin(CNOOC Energy Development Co.,Ltd.,Engineering Technology Branch,Tianjin 300452,China;CNOOC Energy Development Co.,Ltd.,Clean Energy Branch,Tianjin 300452,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452 [2]中海油能源发展股份有限公司清洁能源分公司,天津300452

出　　处：《石油化工应用》2024年第1期42-46,共5页Petrochemical Industry Application

摘　　要：针对海上J油田注入压力高、地层非均质性强、各层吸水不均、层间矛盾突出问题,设计了一种自适应复合调驱体系。确定了体系配方为8%自生气体系(生气剂亚硝酸钠与生气剂氯化铵质量比1.0∶1.1)+0.5%起泡剂+0.3%强化剂体系(聚合物+酚醛交联剂质量比1∶1),考察了体系的动静态性能。实验结果表明:该体系具有泡沫生成可控和成胶强度可控的“双控特点”,岩心实验结果表明该体系封堵率达到97.32%,采收率提高幅度高、中、低渗透率分别为19.59%、45.17%、57.83%,具有很好的调整吸水剖面性能。现场应用取得了很好的降水增油效果。该体系为海上油田水驱高效开发提供了技术支持,具有广阔应用前景。The self-adaptive composite waterflooding system has been designed to address the issues of high injection pressure and strong formation heterogeneity uneven water absorption of each layer and prominent interlayer contradiction in offshore J oilfield.The system formula includes 8%gas-generating agent(mass ratio of sodium nitrite to ammonium chloride 1.0∶1.1),0.5%foaming agent and 0.3%enhanced system(mass ratio of polymer to phenolic crosslinker 1∶1).The dynamic and static performance of the system has been investigated.Experimental results indicate that the system has the"dual-control"characteristics of controllable foam generation and controllable gel strength.Core experiments demonstrate that the system has a blocking rate of 97.32%,and the increase in recovery rate is 19.59%,45.17%and 57.83%for high,medium and low permeability,respectively.It has excellent performance in adjusting water absorption profiles.Field applications have achieved good water reduction and oil enhancement effects.This system provides technical support for efficient waterflooding development in offshore oilfields and has broad application prospects.

关 键 词：海上油田 非均质油藏 复合调驱 驱油效率 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]