Effect of thermally conductive filler on thermal conductivity of cementing materials in geothermal wells

YANG Yu; XU Shuanhai; ZHANG Hao; HAN Yongliang; ZHANG Weidong

doi:10.3969/j.issn.1001-1986.2020.05.022

Volume 48 Issue 5

Oct. 2020

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COAL GEOLOGY & EXPLORATION > 2020 > 48(5): 182-189. > DOI: 10.3969/j.issn.1001-1986.2020.05.022

YANG Yu, XU Shuanhai, ZHANG Hao, HAN Yongliang, ZHANG Weidong. Effect of thermally conductive filler on thermal conductivity of cementing materials in geothermal wells[J]. COAL GEOLOGY & EXPLORATION, 2020, 48(5): 182-189. DOI: 10.3969/j.issn.1001-1986.2020.05.022

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Effect of thermally conductive filler on thermal conductivity of cementing materials in geothermal wells

1. China Coal Research Institute, Beijing 100013, China;
2. Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China

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Key Project of Science and Technology Innovation Fund of Tiandi Science and Technology Co. Ltd.(2018TDZD017)

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Received Date: April 23, 2020
Revised Date: July 20, 2020
Published Date: October 24, 2020

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Abstract

Abstract

Adding heat-conducting filler to the cement of the geothermal well could significantly improve the thermal conductivity of the cement stone and enhance the heat extraction effect of the geothermal well. In this study, on the basis of summarizing the heat conduction path theory and concept of high packing density, the effects of different filler types, particle sizes and dosages on the thermal conductivity of cementing cement were investigated through experiments. The test results showed that graphite had the best effect on improving the thermal conductivity of cement stone compared to other types of filler; the larger the graphite particle size, the higher the thermal conductivity of cement stone. The mixing of graphite with different particle sizes had a better effect on improving the thermal conductivity of cement stone than graphite with a single particle size. The optimal mixing formula was: graphite particle size was 150 μm and 100 μm, and the mass ratio was 2：1. With the increase of graphite content, the thermal conductivity of cementing materials increased, and the fluidity and compressive strength of 48 h gradually decreased. According to the relevant cementing specifications, the graphite content in the cementing materials should be controlled at about 9%. The research will provide references for the preparation of high thermal conductivity cementing materials for geothermal wells.
- geothermal energy,
- thermally conductive filler,
- cementing materials,
- thermal conductivity,
- heat conduction path theory,
- compact packing theory

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[1]	WANG Kai,YUAN Bin,JI Guomin,et al. A comprehensive review of geothermal energy extraction and utilization in oilfields[J]. Journal of Petroleum Science and Engineering,2018,168:465-477. doi:10.1016/j. petrol. 2018.05.012.
[2]	王贵玲,张薇,梁继运,等. 中国地热资源潜力评价[J]. 地球学报,2017,38(4):449-459. WANG Guiling,ZHANG Wei,LIANG Jiyun,et al. Evaluation of geothermal resources potential in China[J]. Acta Geoscientica Sinica,2017,38(4):449-459.
[3]	刘开伟,孙道胜,王爱国,等. 硫酸盐环境下灌浆材料长龄期力学性能及微观结构分析[J]. 材料科学与工程学报,2018,36(3):403-407. LIU Kaiwei,SUN Daosheng,WANG Aiguo,et al. Mechanical strength and microstructure of grouting materials with long-term immersion in sodium sulfate solution[J]. Journal of Materials Science & Engineering,2018,36(3):403-407.
[4]	高萌. 腐蚀环境中水泥基富水充填材料劣化机理研究[D]. 北京:北京科技大学,2017. GAO Meng. Study on the deterioration mechanism of cement-based rich-water filling material in corrosive environment[D]. Beijing:University of Science and Technology Beijing,2017.
[5]	岳家平,徐翔,李早元,等. 高温大温差固井水泥浆体系研究[J]. 钻井液与完井液,2012,29(2):59-62. YUE Jiaping,XU Xiang,LI Zaoyuan,et al. Research on high temperature and large temperature difference cement slurry system[J]. Drilling Fluid & Completion Fluid,2012,29(2):59-62.
[6]	冯建月,郑秀华,李小杰,等. 高温地热井微珠低密度水泥体系设计与性能研究[J]. 探矿工程(岩土钻掘工程),2017,44(增刊1):99-103. FENG Jianyue,ZHENG Xiuhua,LI Xiaojie,et al. Design and performance study on bead low density cement system for high temperature geothermal well[J]. Exploration Engineering(Rock & Soil Drilling and Tunneling),2017,44(Sup.1):99-103.
[7]	SUGAMA T,CARCIELLO N. Sodium metasilicate-modified lightweight high alumina cements for use as geothermal well-cementing materials[J]. Advanced Cement Based Materials,1996,3(2):45-53.
[8]	王楚峰,王瑞和,杨焕强,等. 煤层气泡沫水泥浆固井工艺技术及现场应用[J]. 煤田地质与勘探,2016,44(2):116-120. WANG Chufeng,WANG Ruihe,YANG Huanqiang,et al. Cementing technology of foam cement slurry for coalbed methane well and its application[J]. Coal Geology & Exploration,2016,44(2):116-120.
[9]	郑秀华,司刚平,周复宗,等. 地源热泵换热孔灌浆材料导热性能实验研究[J]. 水文地质工程地质,2006(6):101-103. ZHENG Xiuhua,SI Gangping,ZHOU Fuzong,et al. Experimental study on thermal conductivity of grouting material for heat exchange hole of ground source heat pump[J]. Hydrogeology & Engineering Geology,2006(6):101-103.
[10]	刘嘉涵,徐世烺,曾强. 基于多尺度细观力学方法计算水泥基材料的导热系数[J]. 建筑材料学报,2018,21(2):293-298. LIU Jiahan,XU Shilang,ZENG Qiang. An investigation of thermal conductivity of cement-based composites with multi-scale micromechanical method[J]. Journal of Building Materials,2018,21(2):293-298.
[11]	CAI Wenzhong,TU Shantung,TAO Guoliang. Thermal conductivity of PTFE composites with three-dimensional randomly distributed fillers[J]. Journal of Thermoplastic Composite Materials,2005,18(3):241-253.
[12]	刘巧玲. 碳纳米管增强水泥基复合材料多尺度性能及机理研究[D]. 南京:东南大学,2015. LIU Qiaoling. Multi-scale properties and mechanism of carbon nanotubes/cement nanocomposites[D]. Nanjing:Southeast University,2015.
[13]	曾鞠庆,徐亦冬,潘志宏,等. 氧化石墨烯水泥基复合材料的流动性、力学性能及其作用机理探究[J]. 江苏科技大学学报(自然科学版),2019,33(3):126-130. ZENG Juqing,XU Yidong,PAN Zhihong,et al. Preparation and mechanism of graphite oxide reinforced cement based composites[J]. Journal of Jiangsu University of Science and Technology(Natural Science Edition),2019,33(3):126-130.
[14]	孙杰,魏树梅. 碳纤维增强水泥基复合材料的制备及其性能研究[J]. 新型建筑材料,2018,45(10):61-64. SUN Jie,WEI Shumei. Study on the preparation and properties of carbon fiber reinforced cement matrix composites[J]. New Building Materials,2018,45(10):61-64.
[15]	LI An,ZHANG Cong,ZHANG Yangfei. Thermal conductivity of grapheme-polymer composites:Mechanisms,properties,and applications[J]. Polymers,2017,9(9):437-453.
[16]	TOBERER E S,BARANOWSKI L L,DAMES C. Advances in thermal conductivity[J]. Annual Review of Materials Research,2012,42:179-209.
[17]	YANG Xutong,LIANG Chaobo,MA Tengbo,et al. A review on thermally conductive polymeric composites:Classification, measurement,model and equations,mechanism and fabrication methods[J]. Advanced Composites and Hybrid Materials,2018,1(2):207-230.
[18]	DE LARRARD F,SEDRAN T. Optimization of ultra-high-performance concrete by the use of a packing model[J]. Cement and Concrete Research,1994,24(6):997-1009.
[19]	王志强,朱伯铨,方斌祥,等. 不同粒度的鳞片石墨对低碳镁碳耐火材料性能的影响[J]. 材料导报,2008,22(9):139-141. WANG Zhiqiang,ZHU Boquan,FANG Binxiang,et al. Effect of particle size of flake graphite on performance of low-carbon MgO-C refractories[J]. Materials Reports,2008,22(9):139-141.
[20]	LI Shasha,QI Shuhua,LIU Nailiang,et al. Study on thermal conductive BN/novolac resin composites[J]. Thermochimica Acta,2011,523(2):111-115.

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Effect of thermally conductive filler on thermal conductivity of cementing materials in geothermal wells

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