雄安新区高阳低凸起区雾迷山组热储特征与高产能地热井参数研究
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本文为国家重点研发计划项目(编号2018YFC0604306)、中国地质调查局项目(编号DD20189114)、中国地质科学院基本科研业务费项目(编号JYYWF201811)和国家自然科学基金青年基金项目(编号41502249)联合资助成果。


Study on the thermal storage characteristics of the Wumishan Formation and huge capacity geothermal well parameters in the Gaoyang low uplift area of Xiong’an New Area
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    摘要:

    雄安新区范围内高阳低凸起地热资源条件优越,以往对高阳低凸起勘查开发利用较少。目前利用热储主要为浅部馆陶组砂岩,对于雄安新区规划建设迫切需要探测高阳低凸起深部热储, 寻找高品质地热资源。本文以位于高阳地热田中北部的 D35 孔为依托,通过抽水试验、水样测试分析,研究雾迷山组热储岩溶热储的热储特征、主要参数等。主要结论为: ① D35孔蓟县系雾迷山组裂隙岩溶热储,岩性主要为白云岩、泥质白云岩。裂隙(水层)总厚度 43m,占地层总厚度的 19. 68%(裂隙率),孔隙度平均值为 3. 93%,渗透率平均值为 3. 16×10-3μm2; ② D35 孔在 3600~3850 m 深度共发育 10 个岩溶裂隙带, 岩溶裂隙总厚度 250 m,D35 孔孔口水温 106. 6℃, 孔底最高温度 116℃; ③ D35孔抽水试验曲线具有水汽二相混合特征, 完井抽水流量170 m3/h, 单井供暖潜力达38. 5万m2, 为目前发现的雄安新区范围内产能最大地热井。

    Abstract:

    The geothermal resources of the Gaoyang low uplift in the Xiong’an New Area are of high quality. In the past there was limited exploration, development and utilization of the Gaoyang low uplift resources. At present, the heat storage is mainly used in the shallow Guantao sandstone formation. For the planning and construction in Xiong’an New Area, exploration of the deep heat storage of Gaoyang low bulge in search for highquality geothermal resources is urgently needed. Based on the 3500 m deep D35 borehole in the northcentral part of the Gaoyang geothermal field, this paper studies the heat storage characteristics and main parameters of the thermal storage karst heat storage of the Wumishan Formation through pumping and water sample tests. The main conclusions are as follows: (1) the fractured karst thermal reservoir of the Wumishan Formation is mainly dolomite and argillaceous dolomite. The total thickness of fracture (water layer) is 43 m, accounting for 19.68% (fracture rate) of the total thickness of the formation. The average voids are 3.93%, and the average permeability is 3.16×10-3μm2; (2) ten karst fracture zones with a total thickness of 250 m were developed in the borehole D35 at depths of 3600~3850 m. The water temperature of the D35 orifice is 106.6 ℃, the maximum temperature at the bottom of the hole is 116 ℃; (3) the pumping test curve of D35 borehole has the mixed characteristics of water and steam, the pumping flow of the well is 170 m3/h, and the heating potential of the single well is 385000 m2, indicating it to be the largest capacity geothermal well in Xiong’an New Area.

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王贵玲,高俊,张保建,邢一飞,张薇,马峰.2020.雄安新区高阳低凸起区雾迷山组热储特征与高产能地热井参数研究[J].地质学报,94(7):1970-1980.
WANG Guiling, GAO Jun, ZHANG Baojian, XING Yifei, ZHANG Wei, MA Feng.2020. Study on the thermal storage characteristics of the Wumishan Formation and huge capacity geothermal well parameters in the Gaoyang low uplift area of Xiong’an New Area[J]. Acta Geologica Sinica,94(7):1970-1980.

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  • 收稿日期:2020-06-16
  • 最后修改日期:2020-07-04
  • 录用日期:2020-07-07
  • 在线发布日期: 2020-07-08
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