MT法在鄂尔多斯盆地北部地热资源勘查中的应用

doi:10.13686/j.cnki.dzyzy.2023.01.008

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摘要鄂尔多斯盆地北部地热资源埋藏深、温度高、储量大、开发潜力大,合理地选择物探方法可以很好地确定靶区,圈定热储构造,更精准地为钻探提供依据. 由于MT法探测深度的优势,其反演电阻率特征能很清晰地反映出地热田导水导热构造的分布、产状等特征. 本研究利用前期ER01、ER02地热井测井成果,重新标定ER03地热井物探解释参数,划分出4 000 m深度范围内的热储层在水平和纵向上的分布规律,圈定地热异常范围和空间分布特点,确定地下热水的富水部位及有利的勘探井位,提出下一步工作的建议.

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	郭宝东
	孙中任
	石玉学
	郭嘉婧
	郭跃
	赵晓恕
	孙钢

关键词 ： MT法, 地热勘查, 热储层, 标定物探参数, 鄂尔多斯盆地

Abstract：The geothermal resources in northern Ordos Basin are characterized by deep burial, high temperature, large reserves and great development potential. Reasonable geophysical prospecting methods can accurately determine the target area, delineate the thermal reservoir structure, and provide basis for drilling. Due to the advantages of magnetotelluric sounding(MT) method in detecting depth, the characteristics of resistivity inversion can clearly reflect the distribution and occurrence of water conductivity and thermal conductivity structures in geothermal fields. Based on the previous logging results of ER01 and ER02 geothermal wells, the study recalibrates the geophysical interpretation parameters of ER03 geothermal well, reveals the horizontal and longitudinal distribution rules of thermal reservoirs within 4 000 m depth, delineates the range of geothermal anomalies and spatial distribution, determines the water-rich location of geothermal water and favorable positions for drilling, and puts forward suggestions for next work.

Key words： magnetotelluric sounding(MT) geothermal exploration thermal reservoir calibration of geophysical parameter Ordos Basin

收稿日期: 2021-11-06

PACS:	P631.3
	P314.3

基金资助:内蒙古自治区地质勘查基金项目"内蒙古自治区鄂尔多斯市(鄂尔多斯盆地北部)地热资源勘查与评价"(内地基[2019]水勘1-3).

通讯作者: 郭跃(1984-),女,高级工程师,主要从事地质勘查工作,通信地址辽宁省沈阳市皇姑区宁山中路42号,E-mail: 287795748@qq.com E-mail: 287795748@qq.com

作者简介: 郭宝东(1980-),男,硕士,高级工程师,主要从事地球物理勘探工作,通信地址辽宁省沈阳市皇姑区宁山中路42号,E-mail:116032002@qq.com

引用本文:

郭宝东, 孙中任, 石玉学, 郭嘉婧, 郭跃, 赵晓恕, 孙钢. MT法在鄂尔多斯盆地北部地热资源勘查中的应用[J]. 地质与资源, 2023, 32(1): 64-69.
GUO Bao-dong, SUN Zhong-ren, SHI Yu-xue, GUO Jia-jing, GUO Yue, ZHAO Xiao-shu, SUN Gang. APPLICATION OF MAGNETOTELLURIC SOUNDING METHOD IN GEOTHERMAL RESOURCES EXPLORATION IN NORTHERN ORDOS BASIN. GEOLOGY AND RESOURCES, 2023, 32(1): 64-69.

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http://manu25.magtech.com.cn/Jweb_dzyzy/CN/10.13686/j.cnki.dzyzy.2023.01.008 或 http://manu25.magtech.com.cn/Jweb_dzyzy/CN/Y2023/V32/I1/64

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