低渗透油藏提高采收率技术现状及展望

doi:10.3969/j.issn.1006-6535.2023.01.001

摘要/Abstract

摘要： 低渗透油藏储量丰富,具有广阔的开发前景,但其具有孔渗条件差、储层非均质性强、吸水能力差等特点,开发过程中面临的技术难度较高。针对该问题,通过调研,对低渗透油藏提高采收率技术进行了论述。研究结果表明:低渗透储层(10.0~50.0 mD)主要通过聚合物驱、聚合物-表面活性剂二元驱、微生物驱及深部调驱的方式进行开发;特低渗透储层(1.0~10.0 mD)主要通过表面活性剂驱、泡沫驱和纳米材料驱等方式进行开发;超低渗透储层(0.1~1.0 mD)主要通过渗吸法、CO₂驱、N₂驱及空气驱等方式进行开发。逐步完善驱替介质的驱油机理,研发低成本、高效的环保型驱油体系并推进其在矿场实践中的应用,将一直是中国低渗透油藏开发的发展趋势。该研究可为低渗透油藏的高效开发提供技术支持。

关键词: 低渗透油藏, 化学驱, 气驱, 提高采收率, 碳达峰, 碳中和

Abstract: Low-permeability reservoirs are rich in reserves, with great commercial value, but they are defective in poor porosity and permeability, high reservoir heterogeneity, poor water absorption capacity, etc., increasing the technical difficulties in development. To address these defects, the technology of enhancing oil recovery in low-permeability reservoirs was discussed based on extensive reference. The study results show that low-permeability reservoirs (10.0-50.0 mD) were principally developed by polymer flooding, polymer-surfactant binary flooding, microbial flooding and in-depth profile control and surfactant flooding, extra-low-permeability reservoirs (1.0-10.0 mD) chiefly developed by surfactant flooding, foam flooding and nano-material flooding, and ultra-low-permeability reservoirs (0.1-1.0 mD) primarily developed by imbibition, CO₂ flooding, N₂ flooding and air flooding, etc. It is the development trend of low-permeability reservoir development in China to gradually improve the oil-displacement mechanism of the replacement medium, develop economical and efficient environment-friendly oil displacement system and promote its application in the field practice. This study provides technical support for efficient development of low-permeability reservoirs.

Key words: low-permeability reservoirs, chemical flooding, gas flooding, enhanced oil recovery, peak carbon dioxide emissions, carbon neutrality

中图分类号:

TE357

王哲, 曹广胜, 白玉杰, 王培伦, 王鑫. 低渗透油藏提高采收率技术现状及展望[J]. 特种油气藏, 2023, 30(1): 1-13.

Wang Zhe, Cao Guangsheng, Bai Yujie, Wang Peilun, Wang Xin. Development Status and Prospect of EOR Technology in Low-Permeability Reservoirs[J]. Special Oil & Gas Reservoirs, 2023, 30(1): 1-13.

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