现代地质2024，Vol.38Issue(2)：398-408,11.DOI:10.19657/j.geoscience.1000-8527.2023.073
渤海湾盆地内黄隆起东斜坡奥陶系岩溶热储地热资源评价
Geothermal Resource Evaluation of the Ordovician Karst Reservoir in the East Slope of Neihuang Uplift,Bohai Bay Basin
摘要
Abstract
The eastern slope of Neihuang Uplift develops fault structures and abundant geothermal resources.The distribution of the high-quality karst geothermal reservoir in the Ordovician system matches the demand of urban heating.The refined evaluation of the geothermal resources in the study area will be beneficial to the effi-cient development and utilization of geothermal resources.In this study,we investigated the karst reservoir dis-tribution,geothermal temperatures,physical properties and hydrochemistry,and the conceptual model of forma-tion of the geothermal field.The amount of geothermal resources was carefully evaluated as well.The results show that(1)the Ordovician karst reservoirs are zoned in the plane and distributed in the northeast direction,with the characteristics of shallow burial in the middle and deep burial in the east and west,and the buried depth of the reservoir is 800-3,000 m.The reservoirs are layered in the longitudinal direction,and single well aquifers can be divided into 19-43 layers,and the accumulative water-bearing thickness is 26.3-137.2 m,mainly been distributed in Lower Majiagou Formation,Upper Majiagou Formation,and Fengfeng Formation,as the main aquifer;(2)the average porosity of the geothermal reservoir is 3.52％-15.45％,and the wellhead water temperature is 48-75 ℃,and the single well water volume is 55-160 m3/h,and the water chemistry type is SO4·Cl-Ca·Na,and the salinity is 1,830-3,560 mg/L;(3)the geothermal reservoir volume meth-od is used to evaluate the geothermal resources.The total amount of geothermal resources in the Nanle-Puyang section is 32.1 billion GJ,and the recoverable resources are 4.82 billion GJ,which is equivalent to 165 million tons of standard coal.The recoverable resources can satisfy a heating area of 57.94 million square meters.It is nearly fifteen times of the current development area of 3.93 million square meters,with a huge exploitation po-tential.关键词
内黄隆起/奥陶系/岩溶热储/形成演化/资源评价Key words
Neihuang Uplift/Ordovician/karst geothermal reservoir/formation and evolution/resource evaluation分类
天文与地球科学引用本文复制引用
章惠,汪新伟,周总瑛,贺婷婷,刘晓红,黄旭,高楠安..渤海湾盆地内黄隆起东斜坡奥陶系岩溶热储地热资源评价[J].现代地质,2024,38(2):398-408,11.基金项目
中国石油化工股份有限公司科技项目(KLJP23008). （KLJP23008）
