Research on the Technology of Profile Control and Flood Control in JY Oilfield

Qin Zuo ； Qinghao Bian ； Bo'ang Liu ； Minzhao Liu

《International Core Journal of Engineering》 8卷7期 (2022/07) Pp. 717-729

https://doi.org/10.6919/ICJE.202207_8(7).0095

摘要

JY oilfield is mainly an ultra-low permeability reservoir with low reservoir permeability. As the permeability decreases, the starting pressure gradient rises sharply, and the establishment of an effective displacement pressure system is slow. The main reservoir has entered the medium water-cut development stage. On the plane, water flooding intrudes along the dominant channels such as fractures and high-permeability strips, resulting in plane contradictions; on the profile, the production degree decreases, and the injection-production profile is unbalanced. In this paper, through the study of reservoir physical properties, water flooding and control and flooding mechanism and the implementation of fine profile control and flooding on a large scale, the well selection conditions of different reservoirs are obtained, and differentiated countermeasures are formulated. Four optimizations of injection mode to ensure continuous improvement of injection effect and economic benefits.

關鍵字

Ultra-low Permeability Reservoir ； Dominant Seepage Channel ； Profile Control and Flooding ； Dual-control Technology System

參考文獻

Li Yichao, Study on single sand body characterization and injection-production correspondence in Baima Middle District [D]. China University of Petroleum (Beijing), 2018(4): 36-47.

Mao Jianwen, Wang Wengang, Wang Jiwen, Ma Hongqiang, Analysis of water flooding development characteristics and production stabilization technology in Geng 271 Chang 8 oil reservoir [J]. 2012(6): 1-3.

Zhang Benyan, Zhou Lijuan, He Xuewen, Wang Shaopeng, Yan Mei, Research on Periodic Water Injection Technology of Chang 8 Reservoir in Honghe Oilfield, Ordos Basin [J]. Petroleum Geology and Engineering 2018 (4): 2.

Qin Dong, Ma Dong, Application of linear water injection method in the development of a single oilfield in the direction of fractures [J]. Sino-foreign Energy 2017 (6): 1-4.

Ren Zhipeng, Wang Xiaolin, Li Huan, Xie Zhen, Hu Zhijie, Liu Xuegang, Research on injection technology of Chang 8 reservoir in Jiyuan, Changqing Oilfield[J].Petroleum Geology and Engineering 2013(2):1-3.