中国海上气田开发与提高采收率技术  

Development and EGR technologies of offshore gas fields in China

作　　者：张健[1,2] 李保振 周文胜[1,2] 周守为 朱军龙[2,4] 刘晨 李乐忠[1,2] ZHANG Jian;LI Baozhen;ZHOU Wensheng;ZHOU Shouwei;ZHU Junlong;LIU Chen;LI Lezhong(State Key Laboratory of Offshore Oil Exploitation,Beijing 100028,China;CNOOC Research Institute Co.,Ltd.,Beijing 100029,China;China National Offshore Oil Corporation,Beijing 100010,China;China Marine Resources Development Strategy Research Center,Haikou,Hainan 570312,China)

机构地区：[1]海洋石油高效开发国家重点实验室 [2]中海油研究总院有限责任公司 [3]中国海洋石油集团有限公司 [4]中国海洋资源发展战略研究中心

出　　处：《天然气工业》2023年第1期132-140,共9页Natural Gas Industry

基　　金：“十三五”国家科技重大专项课题(编号:2016ZX05025-003)。

摘　　要：中国海上目前在生产气田共计有30个、气井总数为288口,主要分布在莺歌海盆地、琼东南盆地、珠江口盆地、东海陆架盆地和渤海湾盆地。海上气田的勘探成本、工程建造成本、钻完井和生产操作费用均较高,加之开发调整及生产措施实施难度大,因而陆上气田开发采用的相关方法和技术在海上推广应用便受到诸多限制。为了提高中国海上气田开发的效益,有必要归纳和总结我国海上气田在开发技术与提高天然气采收率技术方面的研究成果与实施经验。按照气藏特点,将中国目前的海上气田分为凝析气藏、低渗透气藏、边底水气藏、高温高压含酸气气藏、深水气藏等5种类型;在此基础上,对其地质特征、开发特点及存在的问题分别进行了探讨;进而结合典型案例对各类气藏的配套开发技术与提高天然气采收率技术及实施经验进行了总结;最后对中国海上天然气开发技术的发展方向及潜力给予了展望。In China offshore, there are 30 producing gas fields, with 288 wells, mainly in the Yinggehai, Southeast Hainan, Pearl River Mouth, East China Sea shelf and Bohai Bay basins. These gas fields demonstrate high exploration costs, engineering construction costs,drilling/completion costs and production & operation expenses, and also great difficulties in development adjustment and treatment implementation, which restrict the offshore application of relevant methods and technologies that have been adopted in development of onshore gas fields. For improving the development benefits of offshore gas fields, it is necessary to review and collect the research results and application experience with respect to the development and enhanced gas recovery(EGR) technologies. In this paper, according to the characteristics of gas reservoirs, offshore gas fields are classified into condensate gas reservoirs, low-permeability gas reservoirs,edge/bottom-water gas reservoirs, high-temperature and high-pressure sour gas reservoirs, and deep-water gas reservoirs. The five types of gas reservoirs are analyzed in terms of their geological characteristics, development performance and production problems.Then, the development and EGR technologies for such gas reservoirs and their applications are reviewed with typical cases. Finally, the orientation and potential of development and EGR technologies for offshore gas fields in China are presented.

关 键 词：中国 海上气田 凝析气藏 低渗透气藏 边底水气藏 高温高压含酸气气藏 深水气藏 气田开发 提高采收率 

分 类 号：TE53[石油与天然气工程—油气田开发工程]