天然气工业2025，Vol.45Issue(4)：19-32,14.DOI:10.3787/j.issn.1000-0976.2025.04.002
深层油气层水力压裂化学暂堵剂研究进展及展望
Research on chemical temporary plugging agent for deep reservoir fracturing:Progress and prospect
摘要
Abstract
Deep oil and gas reservoirs are generally characterized by deep burial,high temperature,high pressure,strong heterogeneity,complex fluid properties,low natural productivity and strong rock plasticity.Temporary plugging technology for oil and gas reservoirs can realize pressure diversion to open new fractures by using chemical temporary plugging agents to effectively improve the stimulated reservoir volume.The performance of temporary plugging agents is crucial for the formation of complex fracture networks in deep oil and gas reservoirs.Based on the review of existing chemical temporary plugging fracturing techniques for deep oil and gas reservoirs,the requirements for key materials of temporary plugging agents are put forward for deep reservoirs depending on the application conditions and operation conditions of the reservoirs.Through investigating the action mechanism and field application of various temporary plugging materials,the challenges and prospects for the research and development of chemical temporary plugging agents are clarified.The following results are obtained.First,relatively mature process of temporary plugging fracturing has been formed for specific deep oil and gas reservoir.The materials for temporary plugging at fracture gaps or in fractures are required to have high temperature(>160℃)adaptability,high pressure capacity after plugging(effective pressure of 10-20 MPa),and low residue rate after degradation(>99%).Second,the existing fracture-gap/in-fracture temporary plugging materials are mainly metal alloys,organic polymers,resins,gels or composite materials,and achieve the maximum temperature resistance of 160℃and the maximum fracture-gap/in-fracture pressure of 30 MPa/24.6 MPa in the laboratory experiment.Third,for a reservoir with temperature resistance exceeding 160℃,the existing temporary plugging materials are mainly challenged by early failure of high-temperature plugging structure,high residue rate after degradation of mixed dense pressure-bearing materials,and poor conductivity of propped fractures.It is proposed that subsequent research on temporary plugging material should focus on denser plugging structure,optimized structure of temporary plugging agent,and reasonable adjustment of the proportion of mixed temperature-resistant materials in degradable materials.In conclusion,the stimulation performance of existing temporary plugging and diverting fracturing in deep reservoirs mainly relies on the key temporary plugging materials,thus it is necessary to research and develop multi-functional and compound temporary plugging materials.The research results provide theoretical guidance for the research and development of key temporary plugging materials for high-temperature(˃160℃)oil and gas reservoirs.关键词
深层油气藏/水力压裂/暂堵转向/化学暂堵剂/非均质性/展望Key words
Deep oil and gas reservoir/Fracturing/Temporary plugging and diverting/Chemical temporary plugging agent/Heterogeneity/Prospect分类
石油、天然气工程引用本文复制引用
戴彩丽,王子昭,李琳,蒋田宇,刘津铭,董云博,赵明伟,吴一宁..深层油气层水力压裂化学暂堵剂研究进展及展望[J].天然气工业,2025,45(4):19-32,14.基金项目
国家自然科学基金基础科学中心项目"超深特深层油气钻采流动调控"(编号:52288101). （编号:52288101）
