Study on the modification effects of methane deflagration fracturing on reservoir permeability
LI Yixuan1，2，DENG Shouchun1，2，JIANG Kun1，2，LI Haibo1，2
(1. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，Hubei 430071，China；2. University of Chinese Academy of Sciences，Beijing 100049，China)
Abstract：In contrast to conventional hydraulic fracturing，the recently proposed methane deflagration fracturing exhibits characteristics of transient low overpressure，ease of repeatability，and low cost. This study investigates the enhancement of fracture permeability and its influence based on pressure-timing data. Physical simulation specimens were prepared using rock-like materials，and synchronized experiments were conducted on methane deflagration，the phase transition of supercritical carbon dioxide，and deflagration fracturing involving an activating agent. Permeability measurements were taken from different regions of the rock samples before and after the fracturing experiments. The results indicate that all fracturing methods can enhance permeability，with methane combustion showing the most significant effect，followed by the activating agent. Notably，there is no apparent correlation between peak pressure and permeability；however，the rate of pressure increase significantly affects permeability variations. Higher pressure ramp rates result in more substantial increases in the permeability of the model samples. The experimental findings reveal that fracturing methods characterized by significant pressure oscillations after reaching peak pressure exhibit similar changes in permeability for both proximal and distal samples. This suggests that the oscillation performance of the pressure-time curve effectively broadens the range of the permeability enhancement effect. The research outcomes hold positive significance for the efficient development of shale gas，providing a foundation for the design and engineering application of combustion fracturing in shale gas reservoirs.
李宜宣1，2，邓守春1，2，江 堃1，2，李海波1，2. 甲烷燃爆压裂对储层渗透性的改造效果研究[J]. 岩石力学与工程学报, 2025, 44(S1): 124-133.
LI Yixuan1，2，DENG Shouchun1，2，JIANG Kun1，2，LI Haibo1，2. Study on the modification effects of methane deflagration fracturing on reservoir permeability. , 2025, 44(S1): 124-133.
[1] 邹才能，朱如凯，吴松涛，等. 常规与非常规油气聚集类型、特征、机制及展望——以中国致密油和致密气为例[J]. 石油学报，2012，33(2)：173–187.(ZOU Caineng，ZHU Rukai，WU Songtao，et al. Types，characteristics，genesis and prospects of conventional and unconventional hydrocarbon accumulations：taking tight oil and tight gas in China as an instance[J]. Acta Petrolei Sinica，2012，33(2)：173–187.(in Chinese))
[2] 康玉柱. 中国非常规油气勘探重大进展和资源潜力[J]. 石油科技论坛，2018，37(4)：1–7.(KANG Yuzhu. Significant progress and resource potential of unconventional oil and gas exploration in China[J]. Petroleum Science and Technology Forum，2018，37(4)：1–7.(in Chinese))
[3] 邹才能，朱如凯，董大忠，等. 页岩油气科技进步、发展战略及政策建议[J]. 石油学报，2022，43(12)：1 675–1 686.(ZOU Caineng，ZHU Rukai，DONG Dazhong，et al. Scientific and technological progress，development strategy and policy suggestion regarding shale oil and gas[J]. Acta Petrolei Sinica，2022，43(12)：1 675–1 686.(in Chinese))
[4] 郭建春，路千里，何佑伟. 页岩气压裂的几个关键问题与探索[J]. 天然气工业，2022，42(8)：148–161.(GUO Jianchun，LU Qianli，HE Youwei. Key issues and explorations in shale gas fracturing[J]. Natural Gas Industry，2022，42(8)：148–161.(in Chinese))
[5] FENG D，LI X，WANG X，et al. Water adsorption and its impact on the pore structure characteristics of shale clay[J]. Applied Clay Science，2018，155：126–138.
[6] FARAH N，DING D Y，WU Y S. Simulation of the impact of fracturing-fluid-induced formation damage in shale gas reservoirs[J]. SPE Reservoir Evaluation and Engineering，2017，20(3)：532–546.
[7] LIMING Z，MANPING Y. Simulation on the dynamic variation of downhole gas pressure during deflagration fracturing in screen completed well[J]. Arabian Journal of Geosciences，2021，14(4)：240.
[8] NIANYIN L，CHAO W，SUIWANG Z，et al. Recent advances in waterless fracturing technology for the petroleum industry：An overview[J]. Journal of Natural Gas Science and Engineering，2021，92：103999.
[9] WANG L，YAO B，CHA M，et al. Waterless fracturing technologies for unconventional reservoirs-opportunities for liquid nitrogen[J]. Journal of Natural Gas Science and Engineering，2016，35：160–174.
[10] MOJID M R，NEGASH B M，ABDULELAH H，et al.A state-of-art review on waterless gas shale fracturing technologies[J]. Journal of Petroleum Science and Engineering，2021，196：108048.
[11] 刘曰武，高大鹏，李 奇，等. 页岩气开采中的若干力学前沿问题[J]. 力学进展，2019，49：201901.(LIU Yuewu，GAO Dapeng，LI Qi，et al. Mechanical frontiers in shale-gas development[J]. Advances in Mechanics，2019，49：201901.(in Chinese))
[12] 江 堃，邓守春，李海波. 甲烷燃爆压裂技术的试验研究[J]. 煤炭学报，2023，48(12)：4 297–4 307.(JIANG Kun，DENG Shouchun，LI Haibo. Experimental study on methane deflagration fracturing technology[J]. Journal of China Coal Society，2023，48(12)：4 297–4 307.(in Chinese))
[13] 王飞航，刘 铮，张建坤，等. 高能气体压裂技术探讨[J]. 石化技术，2018，25(3)：268.(WANG Fenghang，LIU Zheng，ZHANG Jiankun，et al. Exploration of high-energy gas fracturing technology[J]. Petrochemical Industry Technology，2018，25(3)：268.(in Chinese))
[14] 薄其众，葛 刚，马功联. 高能气体压裂技术与应用[J]. 海洋石油，2003，(3)：69–71.(BO Qizhong，GE Gang，MA Gonglian. Energetic Gas Fracturing Technology and Applications[J]. Offshore Oil，2003，(3)：69–71.(in Chinese))
[15] 蒋林宏，王敉邦，张 梅. 国内外高能气体压裂技术的运用概况及独特优势[J]. 石油化工应用，2016，35(3)：6–9.(JIANG Linhong，WANG Mibang，ZHANG Mei. Application and advantages of high energy gas fracturing at home and abroad[J]. Petrochemical Industry Application，2016，35(3)：6–9.(in Chinese))
[16] JAIMES M G，CASTILLO R D，MENDOZA S A. High energy gas fracturing：a technique of hydraulic prefracturing to reduce the pressure losses by friction in the near wellbore-a colombian field application[C]// All Days. Mexico：SPE，2012：SPE–152886–MS.
[17] JIWEI W，TIANKUI G，MING C，et al.Numerical study of the fracture propagation mechanism of staged methane deflagration fracturing for horizontal wells in shale gas reservoirs[J]. Geoenergy Science and Engineering，2023，230：212209.
[18] WU F，PU C，CHEN D，et al.Coupling simulation of multistage pulse conflagration compression fracturing[J]. Petroleum Exploration and Development，2014，41(5)：663–670.
[19] 田怡萍. 页岩爆燃压裂下裂缝扩展模式数值模拟研究[硕士学位论文][D]. 绵阳：西南科技大学，2019.(TIAN Yiping. Numerical simulation study on crack propagation mode under shale deflagration fracturing[M. S. Thesis][D]. Mianyang：Southwest University of Science，2019.(in Chinese))
[20] 陈尚斌，罗 宁，翟 成，等. 燃爆冲击载荷对页岩储层孔裂隙系统的改造作用特征[J]. 煤炭学报，2023，48(2)：869–878.(CHEN Shangbin，LUO Ning，ZHAI Cheng，et al. Stimulation characteristics of pore-fracture system in shale reservoirs under combustion-explosion loads[J]. Journal of China Coal Society，2023，48(2)：869–878.(in Chinese))
[21] 王继伟，曲占庆，郭天魁，等. 基于CDEM的页岩甲烷原位燃爆压裂数值模拟[J]. 中国石油大学学报：自然科学版，2023，47(1)：106–115.(WANG Jiwei，QU Zhanqing，GUO Tiankui，et al. Numerical simulation on fracture propagation of methane in-situ explosion fracturing in shale gas reservoirs[J]. Journal of China University of Petroleum：Natural Science，2023，47(1)：106–115. (in Chinese))
[22] JIANG K，DENG S，JIANG X，et al. Calculation of fracture number and length formed by methane deflagration fracturing technology[J]. International Journal of Impact Engineering，2023，180：104701.
[23] 姜晓昉. 页岩储层燃爆压裂机制及储层渗透性分析研究[博士学位论文][D]. 北京：中国科学院大学，2023.(JIANG Xiaofang. Study on deflagration fracturing mechanism and permeability analysis of shale reservoir[Ph. D. Thesis][D]. Beijing：University of Chinese Academy of Sciences，2023.(in Chinese))
[24] 黄毓林，戴祖福. 爆燃压裂工艺及应用[J]. 石油钻采工艺，1994，(1)：81–87.(HUANG Yulin，DAI Zufu. Explosive fracturing process and application[J]. Oil Drilling and Production Technology，1994，(1)：81–87.(in Chinese))
[25] 孙 林，黄 波，易 飞，等. 爆燃压裂技术对水泥试样致裂试验研究[J]. 西南石油大学学报：自然科学版，2020，42(5)：99–106.(SUN Lin，HUANG Bo，YI Fei，et al. The gas from deflagration fracture to crack the cement test 8ample expneriment[J]. lournal of SouthwostPetroleum University：Science and Technology，2020，42(5)：99–106.(in Chinese))
[26] DOU H，ZHANG H，YAO S，et al. Measurement and evaluation of the stress sensitivity in tight reservoirs[J]. Petroleum Exploration and Development，2016，43(6)：1 116–1 123.
[27] SANDER R，PAN Z，CONNELL L D. Laboratory measurement of low permeability unconventional gas reservoir rocks：A review of experimental methods[J]. Journal of Natural Gas Science and Engineering，2017，37：248–279.
[28] 陈 浩，秦 勇，李贵中，等. 基于脉冲衰减法的煤岩渗透率应力敏感性研究[J]. 煤炭科学技术，2018，46(6)：167–172.(CHEN Hao，QIN Yong，LI Guizhong．et al. Study on stress sensitivity of coal rock permeability based on pulse-decay method[J].Coal Science and Technology，2018，46(6)：167–172.(in Chinese))
[29] JONES S C. A technique for faster pulse decay permeability measurements in tight rocks[J]. SPE Form，1997，(12)：19–25.
[30] 王益腾，陈晓坤，韩增强，等. 一种快速测量低渗透岩心渗透率的装置及方法[P]. 中国：CN 114993916 A，2022–09–02.(WANG Yiteng，CHEN Xiaokun，HAN Zengqiang，et al. A device and method for rapid measurement of permeability in low permeability cores[P]. China：CN 114993916 A，2022–09–02.(in Chinese))
2025, Vol. 44 
