中国海上低渗油气田开发历程、关键技术及攻关方向  

Development process,key technologies and research directions of China's offshore low-permeability oil and gas fields

作　　者：范廷恩 FAN Tingen(CNOOC Research Institute Ltd.,Beijing 100028,China)

机构地区：[1]中海油研究总院有限责任公司,北京100028

出　　处：《中国海上油气》2024年第3期95-109,共15页China Offshore Oil and Gas

基　　金：中国海洋石油集团有限公司“十四五”重大科技专项“海上低渗及潜山油气田有效开发技术(编号:KJGG2022-0700)”部分研究成果。

摘　　要：中国海上低渗透油气资源丰富、分布广泛,但受海洋特殊作业环境、技术和经济性等限制,经济有效开采难度大,攻克技术瓶颈、推进规模化开发意义重大。历经多年实践,充分吸收陆上油田开发经验,立足少井高产,围绕“四个匹配”攻关形成了具有海上特色的低渗有效开发技术路径,提出三项开发策略“压裂投产、能量补充、降本增效”和5项关键技术内容,即储层综合评价、有效能量补充、地质工程一体化、压裂工艺工具与经济评价,成功突破了20 mD以上低渗透油藏开发瓶颈,并逐渐下探至5 mD近特低渗油藏有效开发,有力地推进了海上低渗油田开发进程。未来将进一步探索深层-超深层油气领域关键技术,研发大型压裂作业技术装备,打造海上低渗“CO_(2)驱油+封存”联合工程。China's offshore low-permeability oil and gas resources are abundant and widely distributed,however,due to the special offshore operating environment,technical challenges,and economical constraints of the ocean,economically effective exploitation faces significant difficulties.Therefore,overcoming these technological bottlenecks and promoting large-scale development are of great significance.After years of practice,learning from onshore oilfields development experience,a unique path for effectively developing offshore low-permeability reserves has been formed,focusing on high productivity from few wells and emphasizing"4 matches"to address the challenges.Three development strategies have been proposed,including fracturing for production,energy supplementation,cost reduction and efficiency enhancement.Five key technical contents have been identified,namely comprehensive reservoir evaluation,effective energy supplementation,geology-engineering integration,fracturing technology tools,and economic evaluation.These efforts have successfully overcome the development bottleneck of low-permeability reservoirs above 20 mD,and gradually extended to effectively develop reservoirs with permeability as low as 5 mD,significantly promoting the development of offshore low-permeability oilfields.In the future,key technologies in deep and ultra deep oil and gas fields will be further explored,large-scale fracturing operation technology and equipment will be taken into research,and a joint project of offshore"CO_(2) flooding and storage"in low-permeability reservoir will be established.

关 键 词：海上低渗透油气田 压裂开发 地质工程一体化 能量补充 降本增效 

分 类 号：TE348[石油与天然气工程—油气田开发工程]