基于REV的钻井液固相颗粒对热储传热性能影响分析

杜佳华; 王志国; 董芋双; 何刘; 曹静; 张艳艳

doi:10.19912/j.0254-0096.tynxb.2023-1622

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (2) : 116-123. DOI: 10.19912/j.0254-0096.tynxb.2023-1622

基于REV的钻井液固相颗粒对热储传热性能影响分析

杜佳华, 王志国, 董芋双, 何刘, 曹静, 张艳艳

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ANALYSIS OF EFFECT OF DRILLING FLUID SOLID-PHASE PARTICLES ON HEAT TRANSFER PERFORMANCE IN THERMAL RESERVOIRS BASED ON REPRESENTATIVE ELEMENTARY VOLUME

Du Jiahua, Wang Zhiguo, Dong Yushuang, He Liu, Cao Jing, Zhang Yanyan

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摘要

为探明钻井液固相颗粒侵入地热储层对传热性能的影响,将地热储层划分为侵入区和原始区,基于表征单元体（REV）思想,进行储层参数描述和表征。提出孔隙型热储侵入区的内、外介质REV导热系数计算模型和串-并联、并-串联宏观导热系数计算模型。针对砂岩热储进行数值计算,分别从孔隙率、含水率和含杂率动态变化角度探讨对热储导热系数的影响规律。结果表明：当含水率、含杂率不变,该文所建4种模型导热系数均随孔隙率的增大呈下降趋势;当孔隙率、含杂率不变,4种模型导热系数均与含水率呈正相关的上升趋势;当孔隙率、含水率不变,4种模型导热系数随含杂率变化的趋势与含水率变化时的趋势基本相似;当孔隙率、含水率以及传热温差不变,两种宏观导热系数计算模型下,通过单位岩体表面的热量均随含杂率的增大而增大,增幅不明显。

Abstract

To investigate the influence of drilling fluid solid-phase particles intruding into the geothermal reservoir on the heat transfer performance, the geothermal reservoir was divided into intrusive and original zones, and the description and characterization of reservoir parameters were carried out based on the idea of representative elementary volume （REV）. The internal and external medium REV thermal conductivity calculation models and the series-parallel and parallel-series macroscopic thermal conductivity calculation models for the intrusive zone of a pore-type thermal reservoir are proposed. Numerical calculations are carried out with sandstone thermal reservoirs, from the perspective of porosity, water content, and impurity rate dynamic change, respectively, to explore the influence on the thermal conductivity of thermal reservoirs. The results show that： when the water content and impurity rate are unchanged, the thermal conductivity of the four models constructed in this paper shows a decreasing trend with the increase of porosity; when the porosity and impurity rate are unchanged, the thermal conductivity of the four models shows a positive correlation of upward trend with the water rate; when the porosity and the water content are unchanged, the trend of the thermal conductivity of the four models with the change of the impurity rate is similar to that of the change of the water content;

导出引用

杜佳华, 王志国, 董芋双, 何刘, 曹静, 张艳艳. 基于REV的钻井液固相颗粒对热储传热性能影响分析[J]. 太阳能学报. 2025, 46(2): 116-123 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1622

Du Jiahua, Wang Zhiguo, Dong Yushuang, He Liu, Cao Jing, Zhang Yanyan. ANALYSIS OF EFFECT OF DRILLING FLUID SOLID-PHASE PARTICLES ON HEAT TRANSFER PERFORMANCE IN THERMAL RESERVOIRS BASED ON REPRESENTATIVE ELEMENTARY VOLUME[J]. Acta Energiae Solaris Sinica. 2025, 46(2): 116-123 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1622

中图分类号： TK521

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