| 唐永香,刘杰,李嫄嫄,张雪梅,栾鹏宇,刘斐,彭红晶,李哲,张婷婷.天津宁河“坳中凸”区深部雾迷山组热储特征及探井参数研究[J].矿产勘查,2025,16(3):505-512 |
| 天津宁河“坳中凸”区深部雾迷山组热储特征及探井参数研究 |
| Characteristics of thermal reservoir of Wumishan Formation and parameters of exploring boreholes in "protrusion in depression area", Ninghe District, Tianjin |
| 投稿时间：2024-06-15 |
| DOI：10.20008/j.kckc.202503007 |
| 中文关键词: “坳中凸”构造区 雾迷山组 热储特征 天津宁河 |
| 英文关键词: "depression-convex" tectonic area Wumishan Formation thermal reservoir characteristics Ninghe, Tianjin |
| 基金项目:本文受自然资源部滨海城市地下空间地质安全重点实验室开放基金课题“天津滨海潜凸起地热异常区地热成因机理研究”(BHKF2023Z06)资助。 |
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| 中文摘要: |
| 当前天津开发利用的地热资源主要赋存于浅部孔隙型砂岩热储层，难以长期满足城市建设发展需求，急需探测深部热储来提高地热资源保障能力。天津宁河凸起区位于“坳中凸”独特构造区域，近期新发现了资源禀赋优越的蓟县系雾迷山组热储层。笔者以研究区的 ZK-01井为研究对象，通过对降压试验、地热流体测试、钻孔测温和物探测井等资料进行分析，系统阐明了雾迷山组热储特征及探井参数。主要结果为:①ZK-01井揭露蓟县系雾迷山组热储顶板埋深 2270 m，岩性主要为白云岩，孔隙度为 0.50%～2.52%，渗透率为 0.10～0.35(×10-3 μm2)，泥质含量 4.14%～7.19%；②ZK-01井的井口稳定流温为 98.5 ℃，盖层平均地温梯度约为 4.92 ℃/100 m；③ ZK-01井降压试验曲线具有水-汽二相混合特征，地热流体水质较好，出水量 100.4 m3/h，单井供暖潜力约 32万 m2，为目前区内新发现的高产能地热井。 |
| 英文摘要: |
| The geothermal resources developed and utilised in Tianjin are mainly located in shallow pore-typesandstone thermal reservoirs currently, which can hardly meet the demand of urban construction and developmentin the long term, and there is an urgent need to explore the deep thermal reservoirs to improve the capacity of geo-thermal resources protection. Tianjin Ninghe Bulge Area is located in the unique tectonic region of the "protrusionin depression area", and recently newly discovered thermal reservoirs of the Jixian Wumishan Formation, which hasexcellent resource endowment. The ZK-01 borehole in the study area is studied in this paper, and through analysingthe data of pressure-relief test, geothermal fluid test, borehole temperature measurement and physical soundingwells, the characteristics of the thermal reservoir of the Wumushan Formation and the parameters of the exploratorywells are systematically elucidated. The main results are as follows: ①ZK-01 borehole exposes the thermal storagetop plate of the Jixian Wumishan Formation at a depth of 2270 m, with lithology mainly dolomite, porosity of 0.50%-2.52%, permeability of 0.10-0.35(×10-3 μm2), and mud content of 4.14%-7.19%; ②The stable flow temperatureof the wellhead of the ZK-01 well is 98.5 ℃, and the average geothermal gradient of the cap layer is about 4.92 ℃/100 m; ③ZK-01 borehole buckling test curve has the characteristics of water-vapour two-phase mixing, good qual-ity of the geothermal fluid water, 100.4 m3/h of water output, and the heating potential of a single well is about 320000 m2 , which is a newly discovered high-yield geothermal well in the study area. |
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