摘要
系统总结吉林油田在CO_(2)捕集、驱油与埋存技术研究和工程实践方面形成的成型技术和矿场应用经验,阐述形成的全产业链配套技术系列。采用“模拟计算+中试试验+矿场应用”方法,研究证实了不同CO_(2)浓度捕集工艺在油田的适应性,研发了以新型活化剂为主的低耗能活化N-甲基二乙醇胺脱碳工艺技术,建立了主干网CO_(2)气相输送、井口超临界注入、采出流体气液分输的运行模式。根据不同气源条件,应用液相、超临界相、高压密相增压技术和设施,形成了气密封管、连续油管等井下注入工艺及配套防腐防堵技术。驱油实践中研发了锥形水气交替驱、CO_(2)泡沫驱、高气油比CO_(2)驱等采油技术与采出流体处理技术。通过数值模拟和现场试验探索,形成了直接回注、分离提纯后回注、混合回注3种产出气循环注入CO_(2)驱技术,并完建10×104m3/d循环注入站,实现了伴生气“零排放”。形成了碳通量、流体组分、碳同位素等监测一体分析的CO_(2)埋存安全监测技术,并确立了以防腐药剂为主、防腐材料为辅的全过程防腐技术路线。目前已建成高效低耗的CO_(2)捕集驱油与埋存集成示范区,累计增油32×104t,CO_(2)埋存量达250×104t。
This paper systematically presents the established technologies and field applications with respect to research and engineering practice of CO_(2)capture, enhanced oil recovery(EOR), and storage technology in Jilin Oilfield, NE China, and depicts the available series of supporting technologies across the industry chain. Through simulation calculation + pilot test + field application, the adaptability of the technology for capturing CO_(2)with different concentrations in oilfields was confirmed. The low energy-consumption, activated N-methyl diethanolamine(MDEA) decarburization technology based on a new activator was developed, and the operation mode of CO_(2)gas-phase transportation through trunk pipeline network, supercritical injection at wellhead, and produced gas-liquid separated transportation was established. According to different gas source conditions, liquid, supercritical phase, high-pressure dense phase pressurization technologies and facilities were applied to form the downhole injection processes(e.g. gas-tight tubing and coiled tubing) and supporting anti-corrosion and anti-blocking techniques. In the practice of oil displacement, the oil recovery technologies(e.g. conical water-alternating-gas injection, CO_(2)foam flooding, and high gas-oil ratio CO_(2)flooding) and produced fluid processing technologies were developed. Through numerical simulation and field tests, three kinds of CO_(2)cyclic injection technologies(i.e. direct injection, injection after separation and purification, and hybrid injection) were formed, and a 10×10~4 m~3/d cyclic injection station was constructed to achieve "zero emission" of associated gas. The CO_(2)storage safety monitoring technology of carbon flux, fluid composition and carbon isotopic composition was formed. The whole-process anti-corrosion technology with anticorrosive agents supplemented by anticorrosive materials was established. An integrated demonstration area of CO_(2)capture, flooding and storage with high efficiency and low energy-consumption has been built, with a cumulative oil increment of 32×10~4 t and a CO_(2)storage volume of 250×10~4 t.
作者
王国锋
WANG Guofeng(Jilin Oilfield Company,CNPC,Songyuan 138000,China)
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2023年第1期219-226,共8页
Petroleum Exploration and Development
基金
国家科技重大专项“吉林油田CO_(2)驱油与埋存工业化应用技术研究”(2016ZX05016-002)
中国石油科技项目“CCUS注采工艺、产出气循环利用及高效防腐关键技术研究”(2021ZZ01-04)。
