天津市南部平原区雾迷山组热储岩溶裂隙发育规律

邱京卫; 辛玉齐; 邵炳松; 刘赞

doi:10.19388/j.zgdzdc.2023.04.10

天津市南部平原区雾迷山组热储岩溶裂隙发育规律

天津地热勘查开发设计院,天津 300250

基金项目: 中国地质调查局“天津市基岩地质构造调查与区域地壳稳定性评价(编号: 1212011220232)”项目资助

详细信息

作者简介:
邱京卫(1983—),女,工程师,主要从事地热地质研究工作。Email: 641782472@qq.com。

中图分类号: P314
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出版历程
- 收稿日期: 2022-11-15
- 修回日期: 2023-01-26
- 刊出日期: 2023-08-19

Development law of karst fractures in the thermal storage of Wumishan Formation in Southern Plain District of Tianjin

Tianjin Geothermal Exploration and Development Designing Institute, Tianjin 300250, China

摘要

摘要: 蓟县系雾迷山组是天津主力开发的热储层位,对这套地层的研究主要集中在热储层温度场、动力场、水化学场和地表水回灌等方面,在热储岩溶裂隙方面的研究较少。通过对天津市138眼雾迷山组地热井的完井和测井资料进行对比分析,统计了不同构造单元雾迷山组一、二类裂缝发育,热储顶板埋深,地热井单位涌水量和上覆不同地层的情况,总结了其岩溶裂隙发育规律。结果表明: 雾迷山组岩溶裂隙较发育,漏失部位距热储顶板埋深距离集中在100 m以浅; 热储顶部岩溶发育,裂隙发育受上覆不同地层的影响不大,裂隙发育与该层顶板埋深的相关性不明显,但整体上有裂隙发育随顶板埋深加大而略有减小的趋势; 地热井的单位涌水量随裂隙发育程度的增大而变大; 热储裂隙比集中在0.1~0.4,受构造影响,在张性断裂构造带、断裂交汇和背斜轴部热储构造裂隙较发育。研究结果可为天津市雾迷山组地热的有效开发利用与地热钻探提供参考。
- 岩溶裂隙 /
- 雾迷山组 /
- 天津市
Abstract: Wumishan Formation in Jixian System is the main-developed thermal storage formation in Tianjin, and the research on this layer mainly focuses on the temperature field, dynamic field, water chemistry field and surface water reinjection of the thermal reservoir, with little research on the karst fracture of thermal storage. In this paper, the authors analyzed and compared the completion and logging data of over 100 geothermal wells in Wumishan Formation in Tianjin to summarize the development of karst fractures of Class I and II in different structural units of Wumishan Formation, the burial depth of the thermal storage roof, the water inflow per unit of geothermal wells, the overlying different strata, and the development law of karst fractures. The results show that the karst fractures of Wumishan Formation are relatively developed, and the distance between the leakage site and the buried depth of the thermal storage roof plate is concentrated at a shallow distance of 100 m. The karst at the top of the hot reservoir is relatively developed, and fracture development is not greatly affected by different strata overlying the layer. The correlation between the fracture development and the burial depth of the roof of the layer is not obvious, but the overall fracture development tends to decrease slightly with the increase of the burial depth of the roof plate. The unit water inflow of geothermal wells increases with the increase of fracture development, and the heat storage fracture ratio is concentrated between 0.1 and 0.4. Under the influence of structure, the fractures of heat storage structure are more developed in the tensile fault structural zone, fault intersection and anticline axis. The research results could provide some references for the effective development and utilization of geothermal energy and geothermal drilling in Wumishan Formation of Tianjin.
- karst fractures /
- Wumishan Formation /
- Tianjin

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参考文献(14)

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天津市南部平原区雾迷山组热储岩溶裂隙发育规律

作者简介: 邱京卫(1983—),女,工程师,主要从事地热地质研究工作。Email: 641782472@qq.com。

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出版历程

Development law of karst fractures in the thermal storage of Wumishan Formation in Southern Plain District of Tianjin

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出版历程

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作者简介:
邱京卫(1983—),女,工程师,主要从事地热地质研究工作。Email: 641782472@qq.com。