摘要
深水和海上深层油气资源是我国海洋油气增储上产的关键,但其钻完井作业面临复杂工程地质条件、极端环境与高成本等多重挑战。系统综述了中国海油在深水及海上深层钻完井领域的关键技术进展,展望了未来发展方向,旨在为复杂场景下的安全高效开发提供理论支撑与实践参考。针对深水复杂井井控溢流监测、井筒完整性、高效完井等核心难题,中国海油创新研发了气侵早期海底预警技术、全寿命环空压力调控技术及多流道旁通筛管等装备,成功保障了“深海一号”超深水大气田等重大项目的安全投产;针对海上深部地层复杂、开发成本高等瓶颈问题,中国海油提出了多源信息融合构造识别、抗高温低成本防腐及硬地层裸眼侧钻等关键技术,显著提升了渤中19-6等深层气田的开发效率。然而,深水超浅气层开发、深水深层高温高压工况叠加等复杂场景仍存在技术瓶颈,核心工具、装备及工程设计软件的自主化程度有待进一步提高。未来,中国海油需重点突破超深层钻井智能控制、全生命周期防腐优化及颠覆性绿色技术研发,以增强自主可控能力,推动我国深水及海上深层油气资源的高效开发。
Deepwater and offshore deep formation oil and gas resources are crucial for enhancing reserves and production in China’s offshore oil and gas industry.However,there are multiple challenges for the drilling and completion operations such as complex engineering and geological conditions,extreme environments,high costs,etc.This paper systematically reviews the key technological advancements made by China National Offshore Oil Corporation(CNOOC)in the fields of deepwater and offshore deep formation drilling and completion,and outlines the future development directions.It aims to provide theoretical support and practical references for safe and efficient development under complex scenarios.To address core challenges such as well control overflow monitoring,wellbore integrity,and efficient completion in deepwater complex wells,CNOOC has innovatively developed seabed gas invasion early warning systems,full lifecycle annular pressure management technology,and multi-channel bypass screen equipment,etc.These innovations have successfully ensured the successful commissioning of major projects such as the“Deep Sea No.1”ultra-deepwater gas field.To address the bottlenecks of complex offshore deep formations and high development costs,CNOOC has proposed key technologies such as multi-source information fusion for structural identification,high-temperature-resistant and low-cost corrosion prevention,and open-hole sidetracking in hard formations.These technologies significantly have improved development efficiency in deep gas fields such as BZ19−6.However,technical bottlenecks still exist in complex scenarios such as ultra-shallow gas zone development in deepwater areas and superposition of high temperature and high pressure working conditions in deepwater,while the localization level of critical tools,equipment,and engineering design software requires further enhancement.Future efforts should focus on breakthroughs in intelligent control of ultra-deep drilling,full lifecycle corrosion prevention optimization,and disruptive green technology research and development,so as to strengthen independent control capabilities and promote efficient exploitation of China’s deepwater and offshore deep formation oil and gas resources.
作者
范白涛
FAN Baitao(CNOOC China Limited,Beijing,100020,China)
出处
《石油钻探技术》
北大核心
2025年第3期11-19,F0003,共10页
Petroleum Drilling Techniques
基金
国家自然科学基金企业创新发展联合基金项目“融合岩石物理-钻井信息的海上深层钻井风险识别方法研究”(编号:U24B2031)
中国海洋石油集团有限公司“十四五”重大科技项目“深水超深水复杂井安全高效钻完井关键技术”(编号:KJGG2022-0201)及“海上低渗及潜山油气田复杂结构井技术”(编号:KJGG2022-0703)资助。
关键词
深水
海上深层
钻井
完井
技术进展
中国海油
deepwater
offshore deep formation
drilling
completion
technological progress
CNOOC
作者简介
范白涛(1975-),男,河南邓州人,1998年毕业于大庆石油学院石油工程专业,2018年获中国石油大学(北京)油气井工程专业博士学位,正高级工程师,主要从事海上钻完井技术研究与管理工作。E-mail:fanbt@cnooc.com.cn。
