煤田地质与勘探2024，Vol.52Issue(1)：140-151,12.DOI:10.12363/issn.1001-1986.23.10.0640
深部地热水多开采井联合运行模式优化
A joint operation mode of multi-production wells for deep geothermal water exploitation
摘要
Abstract
Deep geothermal water,a type of clean and low-carbon renewable energy,plays a significant role in achiev-ing the goals of peak carbon dioxide emissions and carbon neutrality.However,its irrational exploitation will lead to many problems such as decreased water quantity,lowered water level,and low engineering benefits.Based on the avail-able exploration data of geothermal wells in the urban area of Kaifeng City,Henan Province,this study constructed a hy-drogeological model used to characterize the migration of geothermal water and a corresponding mathematical model,which was identified and verified using the Galerkin finite element method.Focusing on geothermal reservoirs at burial depths ranging from 1 200 to 1 400 m that are primarily exploited in the urban area of Kaifeng City,this study built an optimization model for the operation mode of production wells,aiming to overcome the drawbacks of isolated operation and on-demand exploitation of existing geothermal wells.In this model,the objective functions comprised the minimum drawdown,inter-well interference,and operating cost,and the constraint conditions included drawdown and the supply-demand balance.To improve the convergence accuracy and result reliability of the optimization model,this study solved the model using the Pareto-Grey Wolf Optimizer and ranked the results based on the TOPSIS theory.After optimization,the sum of drawdowns at partition nodes decreased by 70.3％ ,the sum of influenced drawdowns between geothermal wells decreased by 10.83％ ,and drawdowns in zones Ⅰ,Ⅱ,and Ⅲ decreased by 12.85％ ,28.14％ ,and 43.77％ ,respect-ively.The areas of the cones of depression surrounded by the-80 m and-90 m water-level contours decreased by 15.5％ and 28.7％ ,respectively.Additionally,the total operating cost of geothermal wells decreased by 28.7％ .By building an optimization model and introducing an improved algorithm,this study will provide a scientific basis for the rational ex-ploitation of geothermal water.Optimizing the operation mode of geothermal wells can reduce the waste of water re-sources and improve their utilization efficiency while reducing the operating cost of geothermal wells.This study can serve as an important guide for the rational exploitation and scientific protection of geothermal water.关键词
地热能开采/地热管理模型/多井联合/Galerkin有限元法/Pareto-灰狼算法/TOPSIS理论/开采优化Key words
geothermal energy exploitation/geothermal management model/multi-well joint operation/Galerkin finite element method/Pareto-Grey Wolf Optimizer/TOPSIS theory/exploitation optimization分类
天文与地球科学引用本文复制引用
平宇,李放,季文清,袁筱莹,齐玉峰,邓晓颖,王心义..深部地热水多开采井联合运行模式优化[J].煤田地质与勘探,2024,52(1):140-151,12.基金项目
国家自然科学基金项目(41972254) （41972254）
河南省创新型科技人才队伍建设工程项目(CXTD2016053) （CXTD2016053）
