摘要
隔夹层是影响油藏开发的重要因素,其准确识别对于制定合理的开发方案至关重要。在开发实践中,对于厚度较薄、渗透率级别在1~10 mD的夹层,其封隔性存在一定的不确定性,需要在地质研究的基础上通过其他技术手段对其封隔性加以明确。文章首先在已识别区域普遍发育夹层的基础上,进一步识别出可能对渗流特征影响的低渗层;其次针对低渗层的遮挡能力,开展压力恢复试井、现代产量递减分析研究,评价其遮挡能力;最后基于数值模拟迭代计算,通过历史拟合优化隔夹层展布范围。结果表明,该方法能够有效识别渗流屏障的位置、范围和渗透性,显著提高模型了见水特征的吻合度,为油藏精细描述和开发方案优化提供了可靠的技术支持。
Interlayers significantly influence reservoir development,and precise identification is crucial for effective exploitation planning.For interlayers with relatively thin thickness and permeability levels ranging from 1 mD to 10 mD,they have some uncertainties for sealing potential in development practice.It is necessary to clarify through geological research and other technical means.This paper proposes a multi-method workflow to characterize interlayer properties.Firstly,low-permeability layers with potential flow-impacting effects are systematically identified within established interlayer frameworks.Secondly,pressure buildup testing analysis and rate-transient production decline diagnostics are implemented to quantify the barrier efficiency of these layers.Finally,an iterative numerical simulation protocol incorporating dynamic history matching is developed to optimize interlayer spatial configurations.Results confirm this methodology reliably determines flow barrier locations,sizes,and permeability.This methodology has significantly improved the consistency degree of the model with water breakthrough characteristics.The integrated workflow provides a robust technical foundation for high-resolution reservoir modeling and development scheme adjustment.
作者
孟令烨
李松林
刘登丽
郭丽
张鹏毅
MENG Lingye;LI Songlin;LIU Dengli;GUO Li;ZHANG Pengyi(Shenzhen Branch of CNOOC China Limited,Shenzhen 518000,China)
出处
《化工管理》
2026年第6期147-151,共5页
Chemical Management
关键词
隔夹层识别
压力恢复试井
动态反演
数值模拟
interlayer identification
pressure buildup testing
dynamic inversion
numerical simulation
