| 苏野,上官拴通,齐晓飞,郑庆学,苏卫东,张永波.马头营凸起区干热岩单井同轴换热性能及影响因素数值模拟研究[J].矿产勘查,2026,17(S1):149-157 |
| 马头营凸起区干热岩单井同轴换热性能及影响因素数值模拟研究 |
| Numerical simulation study on coaxial heat transfer performance and influencing factors in a single well of hot dry rock in Matouying |
| 投稿时间：2025-08-11 修订日期：2025-11-11 |
| DOI：10.20008/j.kckc.2026S1018 |
| 中文关键词: 同轴换热 取热效率 干热岩 导热系数 正循环 |
| 英文关键词: coaxial heat exchange heat extraction efficiency hot dry rock thermal conductivity positive cycle |
| 基金项目:本文受国家重点研发计划项目（2021YFB1507300， 2021YFB1507304）资助。 |
| 作者 | 单位 | 邮编 | | 苏野* | 1河北省煤田地质局第二地质队（河北省干热岩研究中心）,河北 邢台 054099
2河北省干热岩型地热资源勘查开发技术创新中心,河北 邢台 054099
3华北干热岩型地热资源勘查开发技术创新基地,河北 邢台 054099 | 054099 | | 上官拴通 | 1河北省煤田地质局第二地质队（河北省干热岩研究中心）,河北 邢台 054099
2河北省干热岩型地热资源勘查开发技术创新中心,河北 邢台 054099
3华北干热岩型地热资源勘查开发技术创新基地,河北 邢台 054099 | 054099 | | 齐晓飞* | 1河北省煤田地质局第二地质队（河北省干热岩研究中心）,河北 邢台 054099
2河北省干热岩型地热资源勘查开发技术创新中心,河北 邢台 054099
3华北干热岩型地热资源勘查开发技术创新基地,河北 邢台 054099 | 054099 | | 郑庆学 | 4开滦（集团）有限责任公司,河北 唐山 063018 | 063018 | | 苏卫东 | 4开滦（集团）有限责任公司,河北 唐山 063018 | 063018 | | 张永波 | 4开滦（集团）有限责任公司,河北 唐山 063018 | 063018 |
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| 中文摘要: |
| 干热岩同轴换热受地质、工艺和材料等众多参数的影响，分析同轴换热效果的影响因素及影响机制，对同轴换热技术优化具有十分重要的意义。为此，本文在分析马头营凸起区干热岩同轴换热试验结果的基础上，通过构建同轴换热数值模型，分析多因素影响下的同轴换热效率，并建立各因素和出口温度及取热功率的模型，揭示干热岩单井同轴换热效果的控制规律。结果表明：现场同轴换热试验中注入工质温度和出口温度密切相关，干热岩中的热能从固井水泥、井筒中通过传热和换热提取，实现单井同轴换热；注入温度、注入流量、固井水泥导热系数、钻杆导热系数、井径和取热功率之间分别呈现线性负相关关系、二项式正相关关系、Logistic函数正相关关系、二项式负相关关系、二项式正相关关系。降低工质注入温度、钻杆导热系数、增大井径、选取适当的固井水泥及工质注入流量，可有效提高马头营凸起区干热岩资源开采效果。研究成果为马头营凸起区干热岩井同轴换热工艺参数优化奠定了基础。 |
| 英文摘要: |
| The coaxial heat exchange of hot dry rock （HDR） is affected by numerous parameters such as geology， technology， and materials. Analyzing the influencing factors and mechanisms of coaxial heat exchange efficiency is of great significance for the optimization of coaxial heat exchange technology. Based on the analysis of the coaxial heat exchange test results in the Matouying Uplift， this study constructed a numerical model of coaxial heat exchange， analyzed the coaxial heat exchange efficiency under the influence of multiple factors， and established models between various factors and outlet temperature as well as heat extraction power， aiming to reveal the control laws of coaxial heat exchange efficiency in HDR. Results show that the injection working fluid temperature is closely related to the outlet temperature in the on-site coaxial heat exchange test； the thermal energy in HDR is extracted from the cement sheath and wellbore through heat transfer and heat exchange， realizing single-well coaxial heat exchange； there are linear negative correlation， binomial positive correlation， Logistic function positive correlation， binomial negative correlation， and binomial positive correlation between injection temperature and heat extraction power， injection flow rate and heat extraction power， cement sheath thermal conductivity and heat extraction power， drill pipe thermal conductivity and heat extraction power， and well diameter and heat extraction power， respectively. Reducing the working fluid injection temperature and drill pipe thermal conductivity， increasing the well diameter， and selecting appropriate cement sheath and working fluid injection flow rate can effectively improve the HDR resource exploitation effect in the Matouying Uplift. The research results lay a foundation for the optimization of coaxial heat exchange process parameters of HDR wells in the Matouying Uplift. |
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