多层砂岩油藏油井层间干扰机理解析及讨论  

Analysis and discussion on the interlayer interference mechanisms of oil wells in a multilayer sandstone reservoir

作　　者：耿站立[1,2] 王守磊 谢晓庆[1,2] 郑焱 高亚军[1,2] 宋宣毅 GENG Zhanli;WANG Shoulei;XIE Xiaoqing;ZHENG Yan;GAO Yajun;SONG Xuanyi(State Key Laboratory of Offshore Oil Exploitation,Beijing 100028,China;CNOOC Research Institute Ltd.,Beijing 100028,China)

机构地区：[1]海洋石油高效开发国家重点实验室,北京100028 [2]中海油研究总院有限责任公司,北京100027

出　　处：《石油科学通报》2024年第2期338-345,共8页Petroleum Science Bulletin

基　　金：国家科技重大专项“中海油油气开发发展战略研究”(2016ZX05016-006-006)资助。

摘　　要：多层砂岩油藏开发过程中普遍存在层间干扰现象,众多学者从不同角度开展了层间干扰机理、规律及应对策略研究,但层间干扰机理的认识程度多数停留在层间干扰系数宏观规律统计及对矿场应用的经验指导层面,有必要开展深入的定量化解析及讨论。本文首先从矿场油井层间干扰测试资料分析入手,确定了层间干扰研究的突破点,然后采用油藏数值模拟方法模拟了考虑启动压力梯度影响的油井产能测试过程,厘清了油井层间干扰规律,并综合诸多因素分析揭示了多层砂岩油藏层间干扰机理;最后深化了储层纵向非均质性认识,并探讨了油藏非均质性表征研究思路,为提高多层砂岩油藏油井产能预测精度、制定更加精细的开发对策提供理论、技术指导。Interlayer interference exists commonly during the development of multilayer sand reservoirs.Research into the mechanisms and countermeasures of interlayer interference has been undertaken from various perspectives by many scholars.However,the degree of understanding and its applications are less than adequate.Therefore,it is necessary to further quantitatively analyze and discuss interlayer interference in depth.The phenomenon of the interlayer interference is firstly identified with the production capacity testing of oilfield production wells.Then the simulations of the well productivity testing considering threshold pressure gradient are conducted to deepen the understanding of the producer interlayer interference.Next,the mechanisms of the producer interlayer interference are revealed based on a multiple factor analysis.Finally,an understanding of reservoir vertical heterogeneity is proposed and the way to characterize the reservoir heterogeneity is discussed.This study provides a strong theoretical basis and technical guidance to improve productivity prediction accuracy and make more precise development strategies for multilayer sand reservoirs.

关 键 词：多层砂岩油藏 产能测试 层间干扰 启动压力梯度 储层非均质性 

分 类 号：TE343[石油与天然气工程—油气田开发工程] P5[天文地球—地质学]