【摘要】 储气库封闭性研究重点评价气藏盖层、底板及侧向地层的封闭能力,是储气库能否建设及安全运行的前提。与常规构造气藏型储气库相比,岩性气藏圈闭边界不明确,封闭性论证难度大。在总结国内外储气库封闭性论证研究成果的基础上,综合地震、地质与生产动态分析技术,应用大量生产动态数据及实验数据,采用气藏精细描述、突破压力试验、生产动态分析等手段,多学科综合开展储气库盖层、底板及侧向封闭性评价,建立了岩性气藏型储气库封闭性评价技术和盖层封闭性评价标准,综合形成了岩性气藏型储气库封闭性论证的方法和技术流程,指导了长庆气区SH224储气库方案论证,对国内外其他同类型储气库评价具有借鉴意义。更多还原

【Abstract】 Sealing study of UGS is to evaluate sealing ability of gas reservoir cap rock,bottom and lateral formations,which is the premise of successful construction and safe operation of UGS. Compared to conventional depleted oil and gas reservoir,the trap boundary of lithologic gas reservoir is ambiguous,so it is very difficult to demonstrate UGS sealing of lithologic gas reservoir. On the basis of concluding demonstrative study results of UGS sealing both at home and abroad,integrating seismic,geologic and production performance analysis techniques,applying a lot of production performance data and lab data,by means of fine gas reservoir description,breakthrough pressure test and production performance analysis,evaluation on UGS cap rock,bottom and lateral sealing was conducted,creative home-made"UGS sealing evaluation techniques and cap rock sealing evaluation criteria"were established,and demonstrative methods and technical flow for UGS sealing of lithologic reservoir were developed,which guided scheme study of SH224 UGS and provided powerful technical support for Changqing UGS scheme formulating and construction.更多还原