PRE-EVALUATION OF COMPREHENSIVE EFFECT OF DEEP WELL CO2 BLASTING AND FRACTURING HOT DRY ROCK SYSTEM

Xia Jieqin; Dou Bin; Gu Junting; Muhammad Kashif; Cui Guodong; Chen Jin

doi:10.19912/j.0254-0096.tynxb.2020-0454

PDF(1773 KB)

Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (5) : 21-29. DOI: 10.19912/j.0254-0096.tynxb.2020-0454

PRE-EVALUATION OF COMPREHENSIVE EFFECT OF DEEP WELL CO₂ BLASTING AND FRACTURING HOT DRY ROCK SYSTEM

Xia Jieqin¹, Dou Bin¹, Gu Junting², Muhammad Kashif³, Cui Guodong^1,2, Chen Jin^1,4

Author information +

History +

Abstract

The process of CO₂ blasting-cracking provides a new scheme for the construction of commercial EGS reservoir,which is expected to make a breakthrough in the deep geothermal energy development. However, the comprehensive performance of the syetem for cracking hot dry rock by CO₂blasting technology in deep well （SCBH） has not been studied yet. Based on this research deficiency, its comprehensive performance was quantitatively and scientifically evaluated by mathematical modelling to solve the uncertainty and ambiguity of the effect of this technology and fill the gap in the comprehensive evaluation system of deep well geothermal system. Considering that the SCBH is a nonlinear system with variations,fuzzy and complex. In this paper,AHP-FCE optimization mathematical model was selected,AHP stratifies the complex problem of the SCBH and constructs a hierarchical structure. The qualitative judgment of experts was quantified through Matlab, and the weight of evaluation indexes of each layer in FCE was determined.Then based on the FCE fuzzy relation synthesis principle,the comprehensive score of the SCBH under the influence of multiple factors is 83.36. The pre-evaluation result is better. Therefore, CO₂ blasting crackers may be considered for hot dry rock mining. The evaluation results can be used as data support for the technology of CO₂ blasting-cracking to constructe the hot dry rock reservoir,and provide theoretical basis for geothermal mining projects.

Key words

geothermal energy / CO₂ blasting / hot dry rock systems / mathematical model / evaluation

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Xia Jieqin, Dou Bin, Gu Junting, Muhammad Kashif, Cui Guodong, Chen Jin. PRE-EVALUATION OF COMPREHENSIVE EFFECT OF DEEP WELL CO₂ BLASTING AND FRACTURING HOT DRY ROCK SYSTEM[J]. Acta Energiae Solaris Sinica. 2022, 43(5): 21-29 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0454

References

[1] 陈继良, 蒋方明. 增强型地热系统热开采性能的数值模拟分析[J]. 可再生能源, 2013, 31(12): 111-117, 121.
CHEN J L, JIANG F M.Numerical simulation analysis of thermal exploitation performance of enhanced geothermal system[J]. Renewable energy, 2013, 31(12): 111-117, 121.
[2] TESTER J W, ANDERSON B J, BATCHELOR A S, et al.The future of geothermal energy[M]. Massachusetts: Massachusetts Institute of Technology, 2006.
[3] BERTANI R.Geothermal power generation in the world 2005-2010 update report[J]. Geothermics, 2012, 41: 1-29.
[4] 许天福, 张彦军, 曾昭发, 等. 增强型地热系统(干热岩)开发技术进展[J]. 科技导报, 2012, 30(32): 42-45.
XU T F, ZHANG Y J, ZENG Z F, et al.Technology progress in an enhanced geothermal system (hot dry rock)[J]. Science & technology review, 2012, 30(32): 42-45.
[5] 王帅. 干热岩储层化学激发机理及其物理力学演变规律研究[D]. 太原: 太原理工大学, 2019.
WANG S.Study on chemical excitation mechanism and physical and mechanical evolution rule of dry hot rock reservoirs[D]. Taiyuan: Taiyuan University of Technology, 2019.
[6] 罗天雨, 刘全稳, 刘元爽. 干热岩压裂开发技术现状及展望[J]. 中外能源, 2017, 22(10): 23-27.
LUO T Y, LIU Q W, LIU Y S.Present situation and on hydraulic fracturing development technique of hot dry rock[J]. China and foreign energy, 2017, 22(10): 23-27.
[7] WEI N, Li X C, Fang Z M, et al.Regional resource distribution of onshore carbon geological utilization in China[J]. Journal of CO₂ utilization, 2015, 11: 20-30.
[8] 宋阳, 吴晓敏, 胡珊, 等. 二氧化碳在干热岩中换热及固化的数值模拟[J]. 工程热物理学报, 2013, 34(10): 1902-1905.
SONG Y, WU X M, HU S, et al.Numerical simulation of heat transfer and sequestration of CO₂ in hot-dry-rock[J]. Journal of engineering thermophysics, 2013, 34(10): 1902-1905.
[9] WANG C L, CHENG W L, NIAN Y L, et al.Simulation of heat extraction from CO₂-based enhanced geothermal systems considering CO₂ sequestration[J]. Energy, 2018, 142: 157-167.
[10] LUO F, XU R N, JIANG P X.Numerical investigation of fluid flow and heat transfer in a doublet enhanced geothermal system with CO₂ as the working fluid (CO₂-EGS)[J]. Energy, 2014, 64: 307-322.
[11] PRUESS K.Enhanced geothermal systems (EGS) using CO₂ as working fluid-A novel approach for generating renewable energy with simultaneous sequestration of carbon[J]. Geothermics, 2006, 35(4) : 351-367.
[12] ZHANG L, LUO F, XU R N, et al.Heat transfer and fluid transport of supercritical CO₂ in enhanced geothermal system with local thermal non-equilibrium model[J]. Energy procedia, 2014, 63: 7644-7650.
[13] 徐超, 窦斌, 田红, 等. 二氧化碳爆破致裂建造增强型地热系统热储层工艺探讨[J]. 地质科技情报, 2019, 38(5): 247-252.
XU C, DOU B, TIAN H, et al.Process of carbon dioxide blasting to build EGS thermal reservoir[J]. Geological science and technology information, 2019, 38(5): 247-252.
[14] 周磊. 台阶爆破效果评价及爆破参数优化研究[D].武汉: 武汉理工大学, 2012.
ZHOU L.Effect evaluation of step blasting and study on blasting parameter optimization[D]. Wuhan: Wuhan University of Technology, 2012.
[15] ZHANG J H.Combination evaluation method of Analytic Hierarchy Process and Fuzzy Comprehensive Evaluation based on yaahp[EB/OL]. Available: March 25, 2015.
[16] 赵伏军, 谢世勇, 杨磊, 等. 基于层次分析法—模糊综合评价(AHP-FCE)模型优化矿井通风系统的研究[J]. 中国安全科学学报, 2006, 16(4): 91-96.
ZHAO F J, XIE S Y, YANG L, et al.Study on optimization of mine ventilation system based onAHP-FCE model[J]. Chinese journal of safety sciences, 2006, 16(4): 91-96.
[17] SAATY T L.The analytic hierarchy process: Planning, priority setting, resource allocation[M]. New York: McGraw-Hill, 1980.
[18] BROWN D W, DUCHANE D V, HEIKEN G, et al.Mining the earth’s heat: Hot dry rock geothermal energy[M]. Berlin: Spring-Verlag, 2012.
[19] 周文骏, 谭凯旋, 寇子顺, 等. 基于AHP-Fuzzy法的井下采场深孔爆破落矿效果综合评价[J]. 铀矿冶, 2016, 35(3): 170-174.
ZHOU W J, TAN K X, KOU Z S, et al.Comprehensive evaluation of ore break down in underground stope by deep-hole blasting effect based on AHP-fuzzy method[J]. Uranium mining and metallurgy, 2016, 35(3): 170-174.
[20] 褚林配. 地热供能系统综合效益指标评价体系研究[D]. 天津: 河北工业大学, 2015.
CHU L P.Study on evaluation system of comprehensive benefit index of geothermal energy supply system[D]. Tianjin: Hebei University of Technology, 2015.
[21] 刘骏锋. 基于实测数据的综合能源系统综合评价[D]. 北京: 北京交通大学, 2019.
LIU J F.Comprehensive evaluation of integrated energy system based on measured data[D]. Beijing: Beijing Jiaotong University, 2019.