盐穴储气库井场天然气泄漏监测及点位布设优化方法研究  

Study on gas leakage monitoring and optimization of point location methods at salt cavern gas storage well sites

作　　者：陈锋[1] 胡浩 陈加松 张宏 廖友强 邹先坚[1] CHEN Feng;HU Hao;CHEN Jiasong;ZHANG Hong;LIAO Youqiang;ZOU Xianjian(State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China;School of Civil Engineering and Architecture,Wuhan Institute of Technology,Wuhan 430074,China;PipeChina West East Gas Pipeline Company,Shanghai 200122,China)

机构地区：[1]中国科学院武汉岩土力学研究所,岩土力学与工程国家重点实验室,武汉430071 [2]武汉工程大学土木工程与建筑学院,武汉430074 [3]国家管网集团联合管道有限责任公司西气东输分公司,上海200122

出　　处：《安全与环境学报》2025年第3期1112-1124,共13页Journal of Safety and Environment

基　　金：国家管网科学研究与技术开发项目(GWHT20210043181)。

摘　　要：现有可燃性气体检测传感器具有精度低、点位多、影响因素多且稳定性差等问题。针对盐穴储气库井场结构特征,提出了一种井场天然气微泄漏高精度监测及点位布设优化方法。首先,通过调研不同可燃性气体检测技术性能,采用了点射式激光甲烷探测仪对井场区域进行高精度实时监测。然后,建立不同监测点位泄漏气体成功监测的概率预测模型。基于泄漏仿真模型,研究了不同内外界如风向、风速、泄漏点、泄漏速率等条件下泄漏气体在盐穴储气库井场中的扩散规律。最后,以经济性、监测概率为约束条件,形成了井场微泄漏高精度监测及点位布设优选方法。通过建立软件监测平台,对井场微泄漏进行实时监测与精确预警。结果表明,井口和阀组中心连线的布设方案最优,气体微泄漏的成功监测概率达到75%。该方法实现了盐穴储气库井场微泄漏的实时监测和有效预警,有效降低了储气库密封性失效后产生泄漏事件的风险,保障了盐穴储气库的长期安全监测与高效运营。Existing combustible gas detection sensors face challenges such as low precision,numerous detection points,multiple influencing factors,and poor stability.To address these issues,we propose a high-precision method for monitoring natural gas micro-leakage in salt cavern gas storage well fields,along with an optimization strategy for sensor placement based on the structural characteristics of the well field.First,an evaluation of various combustible gas detection technologies was conducted.Based on this assessment,a point-shooting laser methane detector was selected for high-precision,real-time monitoring of the wellsite area.Next,a probability prediction model was developed to assess the likelihood of successfully detecting leaking gas at various monitoring points.Using a leakage simulation model,the diffusion pattern of the leaked gas at the salt cavern reservoir wellsite was analyzed under different internal and external conditions,including wind direction,wind speed,leakage point,and leakage rate.Finally,considering economic constraints and monitoring probability,we developed a high-precision method for detecting microleakage in the reservoir wellfield,along with a model for optimal sensor placement.A practical case study was conducted at the Jintan gas storage reservoir well field(JK6-6),where a point-shooting laser methane detector was deployed and a software monitoring platform was established.Through on-site installation and testing,real-time monitoring and precise early warning of micro-leakage in the well field were successfully implemented.The deployment strategy for the wellhead and valve manifold central linkage is optimized,achieving a high probability of successfully monitoring gas microleakage,up to 75%.This method enables real-time monitoring and effective early warning of micro-leakage at the salt cavern gas storage wellsite.It significantly reduces the risk of leakage events following sealing failures in the storage reservoir,ensuring long-term safety monitoring and the efficient operation of the

关 键 词：安全工程 盐穴储气库 激光传感器 泄漏监测 点位布设优化 

分 类 号：X913[环境科学与工程—安全科学]