浅层地温能开发利用区岩性地层三维建模

Abstract

在浅层地温能开发利用中，地层结构是地源热泵系统设计的重要依据。本文以北京某一区块为例，钻探8眼换热孔，钻探深度均为150 m，进行了地层岩性编录及测井，另搜集研究区深度48~160 m不等的27眼钻孔地层资料，基于解译的钻孔第四系浅层岩性地层资料，应用Schlumberger PETREL建模软件，建立了研究区三维岩性地层模型。该模型可直观反映研究区的地层结构，利用该三维模型综合分析研究区浅层地温能开发利用地质条件，为研究区地源热泵适宜性评价奠定了基础，为后续数值模拟提供了基础地质背景。 Lithologic strata determine the heat pump layout methods during the shallow geothermal energy exploitation and utilization. It is the numerical modeling basis of shallow geothermal sustainable utilization. Taking some district as example in Beijing, 8 heat exchange holes deep 150 m were drilled, and the lithology recording and well logging were carried out. In addition, 27 boreholes’ depth ranging from 48 m to 160 m whose information was gathered. Based on the quaternary lithologic strata data interpreted from the boles data, the study area geological model was established though Schlumberger PETREL modeling software. The model reflects the underground space structure perceptually. Shallow geothermal energy exploitation and utilization conditions were analyzed by 3D lithologic model, and it laid a foundation for heat pump suitability and geological background for numerical molding.