精细单砂体刻画在油田开发中后期的应用  

Application of Fine Single Sand Body Characterization in Middle-later Stage of Oilfield Development

作　　者：徐旭龙[1] 熊山[1] 熊军[1] 周石港 闫一峰 汪志远 宋剑 王仕琛 琚泽 Xu Xulong;Xiong Shan;Xiong Jun;Zhou Shigang;Yan Yifeng;Wang Zhiyuan;Song Jian;Wang Shichen;Ju Ze(No.1 Oil Production Plant,PetroChina Changqing Oilfield Company,Yan'an Shaanxi 716000;No.3 Gas Production Plant,PetroChina Changqing Oilfield Company,Yinchuan Ningxia 750000;No.7 Oil Production Plant,PetroChina Changqing Oilfield Company,Xi'an Shaanxi 710000;Research Institute of Unconventional Oil and Gas Science and Technology,China University of Petroleum(Beijing),Beijing 102249)

机构地区：[1]中国石油长庆油田分公司第一采油厂,陕西延安716000 [2]中国石油长庆油田分公司第三采气厂,宁夏银川750000 [3]中国石油长庆油田分公司第七采油厂,陕西西安710000 [4]中国石油大学(北京)非常规油气科学技术研究院,北京102249

出　　处：《中外能源》2023年第5期15-24,共10页Sino-Global Energy

摘　　要：单砂体精细刻画作为地质再认识重点工作内容,是中后期油藏描述的研究核心,是帮助老油田现阶段油藏调整挖潜最直接有效的工作。夹层的刻画是单砂体构型及剩余油分布刻画的关键。经过近几年实践探索,安塞油田利用检查井、野外露头、测井曲线对比法,有效识别出泥质、钙质、物性3种类型的夹层,逐步建立了各油藏单砂体划分的定量标准;后续建立并完善了采油井单砂体动用标准、注水井单砂体分注标准等单砂体相关标准体系,成为研究剩余油的行动指南。本文利用单砂体研究成果,在桥31、塞407、桥11、丹123井区开展了精细注水调整、剩余油措施挖潜等工作,总结各类措施经验,形成了具有井区特色的单砂体精细分层注水、选择性补孔动用、井网重组及堵水技术体系,取得了较好的措施效果,为油藏开展单砂体精细注采调整及措施挖潜奠定了技术理论基础,为今后开展二次加密、三次采油、精细调整等工作提供了重要依据和借鉴。The fine characterization of single sand body,as the key work of geological re-understanding,is the core of reservoir description in the middle and later stages,and is the most direct and effective work to help old oilfields to adjust and tap the potential at present stage.The characterization of intercalation is the key to characterize single sand body configuration and remaining oil distribution.Through practice and exploration in recent years,three types of intercalation,namely shale,calcareous and physical properties,can be effectively identified by using inspection well,field outcrop and log curve contrast method in Ansai Oilfield,and the quantitative standard of single sand body division in each reservoir has been established step by step.The related standard system of single sand body,such as producing standard of single sand body in oil production wells and separate injection standard of single sand body in water injection wells,has been established and become a guide to the study of remaining oil.Based on the research results of single sand body,this paper has carried out fine water injection adjustment and remaining oil potential tapping in Qiao 31,Sai 407,Qiao 11 and Dan 123 wells blocks,and summarized the experiences of various measures.The system of fine separate layer water injection for the single sand body,producing by selective reperforating,well pattern reconstruction and water shutoff technology with well block characteristics has been formed,and good results have been achieved.It lays a theoretical foundation for fine injection and production adjustment of single sand body and measures for tapping the potential of reservoirs,and provides an important basis and reference for the future work of secondary inflling,tertiary oil recovery and fine adjustment.

关 键 词：单砂体 刻画 应用 

分 类 号：TE34[石油与天然气工程—油气田开发工程]