雄安新区雾迷山组地热储层分布特征

Distribution Characteristics of Geothermal Reservoirs in Wumishan Formation, Xiong’an New Area

摘要: 蓟县系雾迷山组是雄安新区目前地热开发的主要地热储层。在雄安新区内，雾迷山组热储层顶面构造埋深为600~4000 m不等，区内被牛东断层、容东断层和牛南断层分割为雄县断块、容城断块和安新断块三个主要的热储断块。蓟县系雾迷山组，经历了多期构造运动(蓟县、加里东、燕山、喜山等)，其地层经历过多期隆升剥蚀作用，雾迷山组残余厚度为600~1400 m不等，南部残余厚度大，北部残余厚度薄。雄安新区开发利用雾迷山组地热水，具有埋藏浅、水量大、矿化度低、水质好等特点。雄安新区地热资源高效开发利用已成为中国地热能高质量发展的示范区。

Abstract: The Wumishan formation is the main geothermal reservoir in Xiongan new area. In Xiong’an new area, the research area is divided into Xiongxian fault block, Rongcheng fault block and Anxin fault block by Niudong fault, Rongdong fault and Niunan fault. The buried depth of the top surface of the Wumishan formation is 600~4000 m. The Wumishan formation underwent multiple tectonic movements, such as: Jixian, Caledonian, Yanshan and Himalayan movements etc., so the Wumishan formation underwent multiple periods of uplift and denudation. The residual thickness of the Wumishan formation is 600~1400 m, with large residual thickness in the south and thin in the north. The geothermal water of Wumishan formation is characterized by shallow burial, large water volume, low salinity and good water quality. Xiong’an new area has become a demonstration area for high-quality development of geothermal energy in China.