摘要
加快推进天然气地下储气库(以下简称储气库)建设是持续提升储气调峰能力,助力“双碳”目标顺利实现,保障国家能源安全的重要举措之一。由于中国地质条件复杂,储气库选址、设计、建设与运行面临一系列重大科技挑战。为此,在概述国内外储气库理论技术发展历程的基础上,结合国内以陆相沉积、中深层复杂断块为主的建库目标,提出了储气库科学建设亟待创新的交变载荷储气地质体动态密封、高速注采渗流、大井眼注采井高质量建设和地下地面注采全系统完整性监测等重大理论技术问题,并系统阐述了我国储气库建设理论技术未来发展方向。研究结果表明:①深化以动态密封性评价为核心的储气库地质理论体系攻关;②持续开展中低渗储层高效建库理论和设计方法研究;③加强注采转换灵活、高效和低能耗地面关键装备制造技术研发和国产化;④创建以微地震监测为核心的地层—井筒—地面“三位一体”风险实时预警技术;⑤加快开展储气库数字化建设和智能化调峰运行技术攻关。结论认为,随着我国储气库类型多元化、储气空间日益复杂化、储气库功能多样化,开展储气库基础理论与关键技术攻关十分必要。新理论与新技术的创新与融合将大幅提升储气库运行效率、降低建库投资,对保障储气库全生命周期安全高效运行具有重要保障作用。
Promoting the construction of underground gas storage(hereinafter referred to as UGS) is one of the important measures for continuously improving the gas storage and peak shaving capacity, assisting the smooth realization of “double carbon” goal and ensuring national energy security. In China, geological conditions are complex, which bring a series of great technological challenges to UGS site selection, design, construction and operation. To this end, this paper reviews the development history of domestic and foreign UGS theories and technologies. Then, several major theoretical and technological problems in scientific UGS construction that need innovation urgently are pointed out based on domestic UGS construction targets which are dominated by continental deposits and middle-deep complex fault blocks, including dynamic sealing of gas storage geological bodies under alternating load, high-speed injection, production and seepage, high-quality construction of large-hole injection/production wells, and whole-system integrity monitoring of underground and surface injection and production. Finally, the future development directions of UGS construction theories and technologies in China are illustrated systematically. And the following research results are obtained. First, further research the system of UGS geological theory with the dynamic sealing evaluation as the core. Second, continuously carry out the research of the theories and design methods for the efficient UGS construction in medium-and low-permeability reservoirs. Third, strengthen the research & development and localization of the manufacturing technologies for the key surface equipment with the advantages of flexible injection-production conversion, high efficiency and low energy consumption. Fourth, develop the real-time risk pre-warning technology of underground-wellbore-surface trinity with microseismic monitoring as the core. Fifth, accelerate researches on the technologies for the digital construction and intelligent peak shaving and operation of UGS. In conclusion, with the diversification of UGS types and functions and the complication of storage spaces in China, it is quite necessary to research the basic theories and key technologies related to UGS. The innovation and integration of new theories and new technologies will improve the operation efficiency of UGSs, decrease the investment of UGS construction and play an important role in guaranteeing the life-cycle safe and efficient operation of UGSs.
作者
马新华
郑得文
魏国齐
丁国生
郑少婧
MA Xinhua;ZHENG Dewen;WEI Guoqi;DING Guosheng;ZHENG Shaojing(PetroChina Research Institute of Petroleum Exploration&Development,Beijing,100083,China;CNPC Key Laboratory of Oil&Gas Underground Storage Engineering,Langfang,Hebei 065007,China)
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2022年第5期93-99,共7页
Natural Gas Industry
基金
中国石油天然气股份有限公司科学研究与技术开发项目“地下储气库关键技术研究与应用”(编号:2015E-40)。
关键词
地下储气库
储气空间
动态密封性
库容参数设计
数字化建设
智能化调峰
理论技术
发展方向
Underground gas storage
Gas storage space
Dynamic sealing capacity
Storage capacity parameter design
Digital construction
Intelligent peak shaving
Theory and technology
Development direction
