摘要
以河南清丰地区区域地质构造、地震资料解释为基础,结合最新的地热钻井资料,分析研究区奥陶系岩溶热储地热地质特征和水化学特征,建立地热田成因模式,精细评价地热资源量。结果表明:清丰地区地热田成因模式是以太行山山脉和鲁西南隆起区的大气降水为补给水源,以岩溶不整合面和深大断裂为运移通道,经过长距离搬运,在内黄凸起奥陶系碳酸盐岩储集层中富集的中低温传导型地热系统。奥陶系岩溶热储层顶板埋深为1.2~1.3 km,产水贡献能力由大到小依次为峰峰组、下马家沟组和上马家沟组;平面上,NE—SW向断裂发育处是岩溶热储富集的有利区;地热水水质类型为SO 4·Cl Ca·Na型;地热田奥陶系岩溶热储地热资源总量为9.90×108 GJ,折合标准煤为3.38×107 t,年可开采地热资源量可满足180万m 2的供暖面积,具有良好的市场开发前景。该结果为河南清丰地区的地热资源开发提供指导。
Based on seismic,regional geological data and characteristics of karst geothermal reservoir in the study area,and combined with the analysis data of geothermal well and hydrochemical characteristics,the conceptual geothermal model of Qingfeng Area is established to carefully evaluate the geothermal resources.It is considered that the study area formatted a middle-low temperature.This system's recharge water source comes from the atmospheric precipitation of Taihang Mountains and Luxinan Uplift Area,and its migration channels are the karst unconformity surface and fractures with long-distance transportation,gradually enriched in the Ordocician karst reservoir of Neihuang Uplift.The roof depth is 1.2~1.3 km,and the order of water production contribution ability shows as follows:Fengfeng Formation,the Lower Majiagou Group,the Upper Majiagou Formation,and the NE-SW fault structures control the distribution of favorable geothermal reservoirs.The hydrochemistry type belongs to SO 4·Cl Ca·Na type.According to the fine evaluation results of geothermal resources in Qingfeng Area,the total geothermal reserves amount to 9.90×108 GJ,equivalent to 3.38×107 t of standard coal,and the annual exploitation of geothermal resources can meet the indoor heating area of 1.8 million square meters with huge potential for development.The study is of theoretical guiding significance for the development of geothermal resources in Qingfeng Area.
作者
王迪
国殿斌
汪新伟
毛翔
罗璐
WANG Di;GUO Dianbin;WANG Xinwei;MAO Xiang;LUO Lu(School of Geosciences and Resources,China University of Geosciences(Beijing),Beijing 100083,China;New Energy Research Institute of Star Petroleum Company Limited,SINOPEC,Beijing 100083,China)
出处
《东北石油大学学报》
CAS
北大核心
2020年第1期32-43,I0003,共13页
Journal of Northeast Petroleum University
基金
中国石油化工股份有限公司重点科技项目(JKL18033)
中国石油化工股份有限公司重点科技项目(JP19002)。
关键词
地热地质
岩溶热储
资源量评价
奥陶系
内黄凸起
清丰地区
河南省
geothermal geology
karstic geothermal reservoir
resources evaluation
Ordocician
Neihuang Uplift
Qingfeng Area
Henan Province
