层状盐岩地下储气库热力耦合效应数值仿真研究  

Thermal-mechanical Coupling Simulation of the Layered Salt Rock Underground Gas Storage

作　　者：罗小佳 苏宇州 张宁[2] LUO Xiaojia;SU Yuzhou;ZHANG Ning(School of Physics,Nanjing University of Science and Technology,Nanjing 210094,China;School of Transportation Engineering,Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]南京理工大学物理学院,江苏南京210094 [2]南京工业大学交通工程学院,江苏南京211816

出　　处：《盐科学与化工》2025年第2期17-20,25,共5页Journal of Salt Science and Chemical Industry

基　　金：国家自然科学基金面上项目(72271125)。

摘　　要：我国“双碳”战略亟需提升氢气、天然气等清洁能源供给和储备能力,盐岩是公认的大规模地下储气的良好介质。我国现有盐岩地层以层状盐岩为主,层状盐岩中夹杂的泥岩夹层劣化了储库整体安全性,同时气体注采过程中产生的热效应加剧了盐岩及夹层的变形率,对储库的安全性造成不利影响。文章以我国金坛盐岩地下储气库为研究案例,建立了层状盐岩能源储库的轴对称计算模型,采用热力场耦合有限元计算方法,模拟了层状盐岩地下储氢系统热力耦合运营过程,获取了热力耦合条件下储气库的变形场、应力场及温度场的分布特性,分析了夹层介质在热力耦合条件下对储库整体形变的影响,研究结果可为层状盐岩地下储气库运营稳定评估提供数据参考。“Dual carbon”strategy of our nation needs to improve the supply and storage capacity of clean energy such as hydrogen energy and natural gas.Salt rock is recognized as a good medium for large-scale gas storage.The existing salt rock formations in my country are mainly layered salt rock.The mudstone interlayers mixed in the layered salt rock deteriorate the overall safety of the reservoir.Meanwhile,the thermal effect generated during the gas injection and production intensifies the deformation rate of the salt rock and interlayers,which adversely affect the safety of the reservoir.This article established an axisymmetric numerical model based on the data of Jintan salt rock underground gas storage,and conducted thermal-mechanical coupling finite element simulation on the salt rock gas storage operation,and obtained the deformation field,stress field and temperature field of the gas storage.The influence of the interlayer medium on the overall deformation of the reservoir under thermal-mechanical coupling conditions was analyzed.The results provided reference data for the operation stability assessment of the layered salt rock underground gas storage.

关 键 词：层状盐岩 地下储气库 热力耦合 数值仿真 

分 类 号：TE972[石油与天然气工程—石油机械设备]