延长油田二氧化碳驱注采工艺应用及改进  

Application and Improvement of CO_(2) Flooding Injection-Production Technology in Yanchang Oilfield

作　　者：王祎婷 史鹏涛[1] 明丽婷 王士豪 高卓林 WANG Yiting;SHI Pengtao;MING Liting;WANG Shihao;GAO Zhuolin(Exploration and Development Technology Research Center,Yanchang Oilfield Co.,Ltd,Yan’an 716000,Shaanxi,China)

机构地区：[1]延长油田股份有限公司勘探开发技术研究中心,陕西延安716000

出　　处：《科技和产业》2025年第3期26-30,共5页Science Technology and Industry

基　　金：延长油田股份有限公司自主科技项目(ycsy2022xjs-C-03)。

摘　　要：为助力国家“双碳”目标顺利实现和油田提高采收率技术深度探索,延长油田先后建立2个先导试验区、一个工程示范点,确定启动500万t/a注入量的CCUS(碳捕集、利用与封存)项目规划,但现有的CO_(2)驱注采工艺还存在一些局限和不足。系统阐述目前油田CO_(2)驱注采工艺技术现状及特点,深入探讨现场应用过程中出现的问题,并从注采井口、管柱、配套工具和防腐措施等方面提出一系列改进和完善措施,形成满足延长低渗透油藏36万t/a注入量需求的注采工艺技术。提出CO_(2)驱注采工艺技术下一步攻关方向,以期为延长后续百万吨级CCUS注采工艺和配套工艺的发展提供借鉴和指导。In order to help realizing the national“double carbon target”,it is necessary to explor oilfield recovery technology in-depth.Yanchang Oilfield has established two pilot test areas,an engineering demonstration site,and determined to start the planning of CCUS(carbon capture,utilization,and storage)project with an annual injection volume of 5 million tons,but there are some limitations and deficiencies in the existing CO_(2) injection and extraction process.The current situation and characteristics of CO_(2)-driven injection and extraction technology in oilfields were systematically described,the problems in field application were thoroughly discussed.A series of improvements and refinements are proposed in injection and extraction wellheads,tubing columns,ancillary tools and anticorrosion measures,etc.,to form an injection and extraction technology that meets the demand of prolonging the 360000 ton annual injection volume of low-permeability reservoirs.The next direction of CO_(2) drive injection and extraction technology is proposed in order to provide reference and guidance for the development of the subsequent million-ton CCUS injection and extraction technology and supporting technology of Yanchang.

关 键 词：延长油田 CO_(2)驱 注采工艺 封隔器 注气管柱 

分 类 号：TE357[石油与天然气工程—油气田开发工程]