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世界地质 2021, 40(4) 907-914 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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基础地质 |
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青海共和盆地新近系热储层地热资源量评价与分析 |
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于漂罗1,张盛生2,查恩爽3 |
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1青海省地质调查局 水文地质环境地质调查部,西宁 810000;
2青海省水文地质工程地质环境地质调查院 水文地质及地热地质重点实验室,西宁 810008;
3吉林大学 建设工程学院,长春 13002 |
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摘要:
提出一套热储温度主控因素分析、热储温度预测方程构建和考虑单井涌水量的地热资源量评价方法体系。应用于中国共和恰卜恰地热田,结果显示该地热田新近系热储温度呈现西高东低的趋势,热储层最高温度超过 160℃;利用克里格插值方法,确定热储层 50m降深对应的单井涌水量最高为3600m3/d。综合热储层温度和涌水量空间分布特征,确定了恰卜恰新近系热储层供热能力并圈定水热资源开发优势靶区,靶区内每 10000m2热储层的供热能力评价可以达到 18MW。 |
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关键词:
地热资源量
可持续开发
统计分析
克里格插值
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Geothermal energy assessment and analysis in Neogene geothermal reservoir of Gonghe Basin,Qinghai |
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YUPiaoluo1,ZHANGShengsheng2,ZHAEnshuang3 |
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1DepartmentofHydrogeologyandEnvironmentGeology,QinghaiGeologySurvey,Xining810000,China;
2KeyLaboratoryofHydrogeologyandGeothermics,QinghaiInstitutionofHydrogeology,EnvironmentGeology
andEngineeringGeology,Xining810008,China;
3CollegeofConstructionEngineering,JilinUniversity,Changchun130026,China |
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Abstract:
Anovelmethodologyfortheassessmentofgeothermalenergyatregionalscalewasproposedinthis study,combiningregressionanalysis,regressionequationestablishmentfortemperatureprediction,andheatproductionpotentialassessmentregardingthegroundwateryieldinthereservoir.TheimplementationofthemethodologyintheQiabuqiageothermalfieldresultedinthatintheNeogenegeothermalreservoirofthegeothermalfieldofinterest,thetemperatureishighinthewest,anddecreasestowardseast.Thehighesttemperaturereachedto160℃.Maximumgroundwateryieldofthereservoirwasestimatedat3600m3/d,correspondingtoastabilizeddrawdownof 50m.Consideringbothspatialdistributionoftemperatureandgroundwateryield,theheatproductionpotentialwas estimatedandthetargetareaforlargescalegeothermalexplorationintheQiabuqiageothermalfieldwasdetermined,withanaverageheatproductionrateof18MW per10000m2reservoir. |
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Keywords:
geothermalenergyassessment
sustainableexploration
statisticalanalysis
kriginginterpolation
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Copyright by 世界地质 |