摘要
海域天然气水合物储量巨大,是未来极具潜力的战略接替能源。然而,目前全球海域天然气水合物的试采产能与商业化产能门槛仍有2~3个数量级差距,且水合物钻井过程面临诸多挑战。鉴于此,海域天然气水合物经济化钻采平台的研发、基于现有钻井平台的升级和安全钻井技术的应用成为解决水合物钻采经济性差的重要手段。该文基于全球海域天然气水合物储层的钻采现状,对相关的水合物钻采平台进行了概述,并从技术和经济可行性两方面分析了深水海底钻机的应用潜力;最后基于水合物储层钻井特征,指出未来应加强对控压钻井、开路钻井、套管钻井及连续管钻井等技术的探索、升级。这对海域天然气水合物钻采平台的经济化改造及安全钻井技术的探究具有一定指导意义。
The ocean has huge reserves of natural gas hydrate,which is a strategic alternative energy source with great potential in the future.However,there is still a capacity gap of 2~3 orders of magnitude between the trial production and commercial production.Meanwhile,the drilling of hydrates is faced with many challenges.In view of this,the research and development of economical natural gas hydrate drilling platform or upgrading of existing platforms,and the application of safe drilling technologies are important measures to improve the economic performance of natural gas hydrate drilling.This paper summarizes the relevant hydrate drilling and production platforms based on the drilling and production status of natural gas hydrate reservoirs in the ocean.It analyzes the application potential of deep-water subsea drilling rigs from technical and economic feasibility.Finally,based on the drilling characteristics of hydrate reservoirs,it points out that the exploration and upgrading of managed pressure drilling,open circuit drilling,casing drilling,coiled tubing drilling and others should be strengthened in the future,which has a certain guiding significance for the economical transformation of offshore gas hydrate drilling and production platform and research on safe drilling technologies.
作者
王志远
张洋洋
张剑波
杨贺民
WANG Zhiyuan;ZHANG Yangyang;ZHANG Jianbo;YANG Hemin(College of Petroleum Engineering,China University of Petroleum(East China),Qingdao 266580,China)
出处
《船舶》
2022年第5期1-20,共20页
Ship & Boat
基金
中石油重大科技专项“天然气水合物试采井筒安全构建理论与控制技术”课题(ZD2019-184-003)
广东省海洋经济发展(海洋六大产业)专项资金项目(粤自然资合[2021]56号)
国家自然科学基金重大项目“天然气水合物钻采井筒多相流动障碍形成机制与安全控制方法”课题(51991363)。
关键词
天然气水合物
钻采平台
海底钻机
安全钻井
natural gas hydrate
drilling and production platform
subsea drilling rig
safe drilling
