基于测井曲线的吐哈丘陵油田低渗砂岩油藏储层裂缝识别方法

Reservoir Fracture Identification Method Based on Well Logging Curves in Low⁃Permeability Sandstone Reservoirs in Qiuling Oilfield of Tuha

肖志朋 戴立波 韩继凡 左海威 肖劲松 连启东 党育龙 赵向上 杨胜来

Zhipeng XIAO Libo DAI Jifan HAN Haiwei ZUO Jinsong XIAO Qidong LIAN Yulong DANG Xiangshang ZHAO Shenglai YANG

中国石油吐哈油田分公司 勘探开发研究院，新疆 哈密 839009 中国石油大学（北京） 石油工程学院/油气资源与工程全国重点实验室，北京 102249

Research Institute of Exploration and Development，PetroChina Tuha Oilfield Company，Hami Xinjiang 839009，China National Key Laboratory of Petroleum Resources and Engineering，School of Petroleum Engineering，China University of Petroleum （Beijing），Beijing 102249，China

吐哈丘陵油田的低渗透油藏在注水开发过程中表现出部分油井见水早、含水上升快的特征，动态分析显示储层中可能存在优势通道或裂缝。为进一步改善油藏开发后期的开发效果，提高原油采收率，有必要核实、确定储层微裂缝发育情况。在水洗检查井岩心描述的基础上，开展了储层裂缝发育及分布研究，提出了一种基于测井曲线的裂缝发育层位的判断方法；分析了2口井测井资料，并对吸水剖面进行了对比。结果表明，该判断方法可行、可靠，为吐哈丘陵油田改善水驱开发效果、有效动用及开采剩余油提供了技术支撑。

The low?permeability reservoir in Qiuling Oilfield of Tuha shows that the characteristics of early water discovery and rapid rise of water cut in some wells during water injection development, and dynamic analysis shows that there are dominant channels or the possibility of fractures in the reservoir. In order to further improve the development effect and enhance oil recovery, it is necessary to verify and determine the development of micro?fractures in the reservoir at the later stage of reservoir development. In this paper, based on the description of the core of a water washing inspection well, the development and distribution of reservoir fractures are studied, and a method of identifying the fracture development horizon based on logging curves are proposed. Through the analysis of logging data of two wells and the comparison of water absorption profiles, the method is proved to be feasible and reliable, and the study provides theoretical support for improving the development effect of water drive, effective utilization and recovery of remaining oil in Qiuling Oilfield of Tuha.

中国石油科技重大专项(2017E?04?07)

10.12422/j.issn.1672-6952.2025.02.006