页岩纳米孔内超临界CO2、CH4传输行为实验研究

doi:10.11885/j.issn.1674-5086.2017.08.30.11

摘要/Abstract

摘要： 了解超临界CO₂、CH₄在页岩纳米孔内传输行为，是研究页岩储层超临界CO₂注入能力、注入后时空分布以及提高页岩气藏采收率的基础。选用渗透率小于100 nD的龙马溪组富有机质页岩基块岩样，利用岩芯流动实验装置，通过监测岩芯入/出口端气体压力与混合气体（CO₂、CH₄）浓度变化，对比了页岩纳米孔内超临界CO₂、CH₄传输能力，分析了传输能力差异的原因。结果表明：页岩纳米孔内超临界CO₂压力传递速率明显小于CH₄，实验结束后岩样入口端二元混合气体组分中CH₄百分含量显著降低，证实页岩纳米孔内超临界CO₂传输能力显著低于CH₄，主要原因是超临界CO₂吸附能力更强、扩散-渗流能力更小以及超高密度特性表现出的非混相、活塞式驱替行为。基于以上认识，选择某些压裂段注入超临界CO₂，而其他压裂段作为生产段，比单井"吞吐"方式（即注入-焖井-开井生产）更有利于驱替置换页岩纳米孔内游离态甲烷。

关键词: 超临界CO₂, 甲烷, 传输, 纳米孔, 页岩气, 采收率

Abstract: Understanding the transmission behaviors of supercritical CO₂ and CH₄ in shale nanopores is fundamental for studying the supercritical CO₂ injection capacity of shale reserves and the temporal and spatial distribution of injected supercritical CO₂. Understanding these behaviors is also essential for improving the recovery rate of shale reserves. In the study, the transmission capacities of supercritical CO₂ and CH₄ in shale nanopores were compared and the difference in their transmission capacities was analyzed for the underlying reason. A core flow experiment was performed on organic-matter-rich shale matrix samples of the Longmaxi Formation (permeability smaller than 100 nD) by varying the pressure as well as the CO₂ and CH₄ concentrations in the CO₂/CH₄ mixture at the inlet and outlet of the core. The experimental results show that the pressure transmission rate of supercritical CO₂ in shale nanopores was clearly lower than that of CH₄. At the end of the experiment, the CH₄ content by percentage in the CO₂/CH₄ mixture significantly decreased at the inlet of the rock sample, demonstrating that the transmission capacity of supercritical CO₂ in shale nanopores is significantly lower than that of CH₄. This can be explained by certain properties of supercritical CO₂, such as its higher absorption capacity and lower diffusibility and permeability as well as its immiscible displacement and piston-like displacement behaviors owing to its super-high density characteristics. Based on this understanding, some fractured sections were selected for supercritical CO₂ injection, and other fractured sections were reserved for production. Compared with the single-well injection-soaking-production design, this configuration facilitates better displacement of free-state methane in shale nanopores.

Key words: supercritical CO₂, methane, transport, nanopores, shale gas, recovery rate

中图分类号:

TE312

陈强, 孙雷, 潘毅, 高玉琼. 页岩纳米孔内超临界CO₂、CH₄传输行为实验研究[J]. 西南石油大学学报(自然科学版), 2018, 40(5): 154-162.

CHEN Qiang, SUN Lei, PAN Yi, GAO Yuqiong. Experimental Study on the Transmission Behaviors of Supercritical CO₂ and CH₄ in Shale Nanopores[J]. 西南石油大学学报(自然科学版), 2018, 40(5): 154-162.

0
/ / 推荐

导出引用管理器 EndNote|Ris|BibTeX

链接本文: http://journal15.magtechjournal.com/Jwk_xnzk/CN/10.11885/j.issn.1674-5086.2017.08.30.11

http://journal15.magtechjournal.com/Jwk_xnzk/CN/Y2018/V40/I5/154

参考文献

[1] KHOSROKHAVAR R, GRIFFITHS S, WOLF K H. Shale gas formations and their potential for carbon storage:Opportunities and outlook[J]. Environmental Processes, 2014, 1(4):595-611. doi:10.1007/s40710-014-0036-4
[2] SCHEPERS K C, NUTTALL B C, OUDINOT A Y, et al. Reservoir modeling and simulation of the devonian gas shale of eastern kentucky for enhanced gas recovery and CO₂ storage[C]. SPE 126620-MS, 2009. doi:10.2118/-126620-MS
[3] DAHAGHI A K. Numerical simulation and modeling of enhanced gas recovery and CO₂ sequestration in shale gas reservoirs:A feasibility study[C]. SPE 139701-MS, 2010. doi:10.2118/139701-MS
[4] JIANG Jiamin, SHAO Yuanyuan, YOUNIS R M. Development of a multi-continuum multi-component model for enhanced gas recovery and CO₂ storage in fractured shale gas reservoirs[C]. SPE 169114-MS, 2014. doi:10.2118/-169114-MS
[5] HELLER R, ZOBACK M. Adsorption of methane and carbon dioxide on gas shale and pure mineral samples[J].Journal of Unconventional Oil and Gas Resources, 2014, 8:14-24. doi:10.1016/j.juogr.2014.06.001
[6] 张美红,吴世跃,李川田. 煤系地层注入CO₂ 开采煤层气质交换的机理[J]. 煤炭学报, 2013, 38(7):1196-1200. doi:10.13225/j.cnki.jccs.2013.07.015 ZHANG Meihong, WU Shiyue, LI Chuantian. Mass exchange mechanism of coalbed methane exploitation by CO₂ injection in coal measure strata[J]. Journal of China Coal Society, 2013, 38(7):1196-1200. doi:10.13225/j.-cnki.jccs.2013.07.015
[7] LIU Faye, Ellett K, XIAO Yitian, et al. Assessing the feasibility of CO₂ storage in the new Albany Shale (Devonian-Mississippian) with potential enhanced gas recovery using reservoir simulation[J]. International Journal of Greenhouse Gas Control, 2013, 17:111-126. doi:10.-1016/j.ijggc.2013.04.018
[8] GODEC M, KOPERNA G, PETRUSAK R, et al. Potential for enhanced gas recovery and CO₂ storage in the marcellus shale in the eastern United States[J]. International Journal of Coal Geology, 2013, 118:95-104. doi:10.1016/j.-coal.2013.05.007
[9] KIM T H, PARK S S, LEE K S. Modeling of CO₂ injection considering multi-component transport and geomechanical effect in shale gas reservoirs[C]. SPE 176174-MS, 2015. doi:10.2118/176174-MS
[10] 申建,秦勇,张春杰,等. 沁水盆地深煤层注入CO₂ 提高煤层气采收率可行性分析[J]. 煤炭学报, 2016, 41(1):156-161. doi:10.13225/j.cnki.jccs.2015.9030 SHEN Jian, QIN Yong, ZHANG Chunjie, et al. Feasibility of enhanced coalbed mehtane recovery by CO₂ sequestration into deep coalbed of Qinshui Basin[J]. Journal of China Coal Society, 2016, 41(1):156-161. doi:10.13225/-j.cnki.jccs.2015.9030
[11] NING Xiuxu, FAN Jin, HOLDITCH S A, et al. The measurement of matrix and fracture properties in naturally fractured cores[C]. SPE 25898-MS, 1993. doi:10.2118/-25898-MS
[12] LUFFEL D L, HOPKINS C W, SCHETTLER P D. Matrix permeability measurement of gas productive shales[C]. SPE 26633-MS, 1993. doi:10.2118/26633-MS
[13] SINHA S, BRAUN E M, PASSEY Q R. Advances in measurement standards and flow properties measurements for tight rocks such as shales[C]. SPE 152257-MS, 2012. doi:10.2118/152257-MS
[14] GHANIZADEH A, BHOWMIK S, HAERI-ARDAKANI O. A comparison of shale permeability coefficients derived using multiple non-steady-state measurement techniques:Examples from the Duvernay Formation, Alberta (Canada)[J]. Fuel, 2015, 140:371-387. doi:10.1016/j.-fuel.2014.09.073
[15] TINNI A, FATHI E, AGARWAL R. Shale permeability measurements on plugs and crushed samples[C]. SPE 162235-MS, 2012. doi:10.2118/162235-MS
[16] SUAREZ R R, CHERTOV M, WILLBERG D M, et al. Understanding permeability measurements in tight shales promotes enhanced determination of reservoir quality[C]. SPE 162816-MS, 2012. doi:10.2118/162816-MS
[17] JAVADPOUR F, FISHER D, UNSWORTH M. Nanoscale gas flow in shale gas sediments[J]. Journal of Canadian Petroleum Technology, 2007, 46(10):55-61. doi:10.2118/-07-10-06
[18] 陈强,康毅力,游利军,等. 页岩微孔结构及其对气体传质方式影响[J]. 天然气地球科学, 2013, 24(6):1298-1304. CHEN Qiang, KANG Yili, YOU Lijun, et al. Micro-pore structure of gas shale and its effect on gas mass transfer[J]. Natural Gas Geoscience, 2013, 24(6):1298-1304.
[19] 田守嶒,王天宇,李根生,等. 页岩不同类型干酪根内甲烷吸附行为的分子模拟[J]. 天然气工业, 2017, 37(12):18-25. doi:10.3787/j.issn.1000-0976.2017.12.-003 TIAN Shouzeng, WANG Tianyu, LI Gensheng, et al. Molecular simulation of methane adsorption behavior in different shale Kerogen types[J]. Natural Gas Industry, 2017, 37(12):18-25. doi:10.3787/j.issn.1000-0976.-2017.12.003
[20] 孙扬. 天然气藏超临界CO₂ 埋存及提高天然气采收率机理[D]. 成都:西南石油大学, 2012. SUN Yang. Sequestration of supercritical CO₂ in natural gas reservoir and mechanism of enhancing gas recovery[D]. Chengdu:Southwest Petroleum University, 2012.
[21] SIDIQ H, AMIN R. Super critical CO₂-methane relative permeability investigation[C]. SPE 137884, 2010. doi:10.2118/137884-MS
[22] JAVADPOUR F. Nanopores and apparent permeability of gas flow in mudrocks (shales and siltstone)[J]. Journal of Canadian Petroleum Technology, 2009, 48(8):16-21. doi:10.2118/09-08-16-DA
[23] 吴克柳,李相方,陈掌星. 页岩气纳米孔气体传输模型[J]. 石油学报, 2015, 36(7):837-848. doi:10.7623/-syxb201507008 WU Keliu, LI Xiangfang, CHEN Zhangxing. A model for gas transport through nanopores of shale gas reservoir[J]. Acta Petrolei Sinica, 2015, 36(7):837-848. doi:10.7623/-syxb201507008
[24] 景莎莎. 砂岩微孔隙中CO₂/CH₄ 传质过程的分子模拟研究[D]. 成都:西南石油大学, 2015. JING Shasha. Molecular simulation study of CO₂/CH₄ mass transfer process in sandstone micro pore[D]. Chengdu:Southwest Petroleum University, 2015.
[25] KANG Yili, CHEN Mingjun, LI Xiangchen, et al. Laboratory measurement and interpretation of nonlinear gas flow in shale[J]. International Journal of Modern Physics C, 2015, 26(6):1550063. doi:10.1142/S0129183115500631
[26] 葛洪魁,申颍浩,宋岩,等. 页岩纳米孔隙气体流动的滑脱效应[J]. 天然气工业, 2014, 34(7):46-54. doi:10.3787/j.issn.1000-0976.2014.07.008 GE Hongkui, SHEN Yinhao, SONG Yan, et al. Slippage effect of shale gas flow in nanoscale pores[J]. Natural Gas Industry, 2014, 34(7):46-54. doi:10.3787/j.issn.1000-0976.2014.07.008
[27] 曹成,李天太,刘刚,等. 考虑吸附滑脱和自由分子流动效应的页岩基质渗透率计算模型[J]. 西安石油大学学报(自然科学版),2015,30(5):48-53. doi:10.3969/-j.issn.1673-064X.2015.05.008 CAO Cheng, LI Tiantai, LIU Gang, et al. Permeability calculation model of shale matrix with adsorption, slippage and free molecule flow effects[J]. Journal of Xi'an Shiyou University (Natural Science Edition), 2015, 30(5):48-53. doi:10.3969/j.issn.1673-064X.2015.05.008
[28] 张艳玉,李冬冬,孙晓飞,等. 实际状态下的页岩气表观渗透率计算新模型[J]. 天然气工业, 2017, 37(11):53-60. doi:10.3787/j.issn.1000-0976.2017.11.007 ZHANG Yanyu, LI Dongdong, SUN Xiaofei, et al. A new model for calculating the apparent permeability of shale gas in the real state[J]. Natural Gas Industry, 2017, 37(11):53-60. doi:10.3787/j.issn.1000-0976.2017.11.007
[29] 王志刚. 涪陵焦石坝地区页岩气水平井压裂改造实践与认识[J]. 石油与天然气地质, 2014, 35(3):425-430. doi:10.11743/ogg201418 WANG Zhigang. Practice and cognition of shale gas horizontal well fracturing stimulation in Jiaoshiba of Fuling Area[J]. Oil & Gas Geology, 2014, 35(3):425-430. doi:10.11743/ogg201418

页岩纳米孔内超临界CO₂、CH₄传输行为实验研究

Experimental Study on the Transmission Behaviors of Supercritical CO₂ and CH₄ in Shale Nanopores

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	赵咏, 唐嘉, 韩涛, 吴玙欣. 基于LPWAN偏远低效气井数据传输方案设计[J]. 西南石油大学学报(自然科学版), 2020, 42(6): 141-148.
[2]	乐宏, 杨兆中, 范宇. 宁209井区裂缝控藏体积压裂技术研究与应用[J]. 西南石油大学学报(自然科学版), 2020, 42(5): 86-98.
[3]	梁洪彬, 张烈辉, 陈满, 赵玉龙, 向祖平. 快速评价页岩含气量的新方法[J]. 西南石油大学学报(自然科学版), 2020, 42(2): 110-117.
[4]	魏兵, 尚静, 蒲万芬, 卡杰特·瓦列里, 赵金洲. 超临界CO₂在致密油藏中的扩散前缘预测[J]. 西南石油大学学报(自然科学版), 2020, 42(2): 94-102.
[5]	张德平, 马锋, 吴雨乐, 董泽华. 用于CO₂注气驱的油井缓蚀剂加注工艺优化研究[J]. 西南石油大学学报(自然科学版), 2020, 42(2): 103-109.
[6]	刘海龙. 压差时量的提出及平面单向流变量的等价性[J]. 西南石油大学学报(自然科学版), 2020, 42(1): 147-154.
[7]	范宇, 钟成旭, 牟乃渠, 金鑫, 吴鹏程. 一种生物合成基钻井液在长宁气田的应用[J]. 西南石油大学学报(自然科学版), 2020, 42(1): 133-139.
[8]	张烈辉, 崔乾晨, 谢军, 郑健, 李成勇. 页岩气藏压裂水平井线性耦合渗流模型研究[J]. 西南石油大学学报(自然科学版), 2019, 41(6): 1-12.
[9]	郭肖, 杨开睿, 杨宇睿, 贾昊卫. 孔隙网络模拟渗流速度对页岩气开采的影响[J]. 西南石油大学学报(自然科学版), 2019, 41(6): 19-27.
[10]	汪周华, 赵建飞, 白银, 郭平, 刘煌. 不同润湿性修饰石英吸附甲烷的模拟研究[J]. 西南石油大学学报(自然科学版), 2019, 41(6): 28-34.
[11]	程小伟, 张高寅, 马志超, 李斌, 辜涛. 页岩气水平井油井水泥的原位增韧技术研究[J]. 西南石油大学学报(自然科学版), 2019, 41(6): 68-74.
[12]	杨兆中, 李扬, 李小刚, 李成勇. 页岩气水平井重复压裂关键技术进展及启示[J]. 西南石油大学学报(自然科学版), 2019, 41(6): 75-86.
[13]	李勇明, 骆昂, 吴磊, 伊向艺. 考虑应力敏感和水力裂缝方位角的页岩产能模型[J]. 西南石油大学学报(自然科学版), 2019, 41(6): 117-123.
[14]	周明, 廖茂, 韩宏昌, 肖阳, 李辰. 页岩气低伤害超临界CO₂凝胶压裂液研究[J]. 西南石油大学学报(自然科学版), 2019, 41(6): 100-105.
[15]	赵玉龙, 梁洪彬, 井翠, 商绍芬, 李成勇. 页岩气井EUR快速评价新方法[J]. 西南石油大学学报(自然科学版), 2019, 41(6): 124-131.