页岩储层基质气体扩散能力评价新方法

doi:10.7623/syxb201601008

石油学报 ›› 2016, Vol. 37 ›› Issue (1): 88-96.DOI: 10.7623/syxb201601008

页岩储层基质气体扩散能力评价新方法

李武广¹, 钟兵¹, 杨洪志¹, 杨学锋¹, 胡志明², 陈满¹

1. 中国石油西南油气田公司勘探开发研究院四川成都 610041;
2. 中国石油勘探开发研究院廊坊分院河北廊坊 065007

收稿日期:2015-06-26 修回日期:2015-12-09 出版日期:2016-01-25 发布日期:2016-02-02
通讯作者: 李武广,男,1987年1月生,2007年获大庆石油学院学士学位,2013年获中国石油大学(北京)博士学位,现为中国石油西南油气田公司勘探开发研究院工程师,主要从事页岩气田开发研究工作。Email:liwuguang@petrochina.com.cn
作者简介:李武广,男,1987年1月生,2007年获大庆石油学院学士学位,2013年获中国石油大学(北京)博士学位,现为中国石油西南油气田公司勘探开发研究院工程师,主要从事页岩气田开发研究工作。Email:liwuguang@petrochina.com.cn
基金资助:
国家重大科技专项(2016ZX05062002)资助。

A new method for gas diffusivity evaluation in matrix rocks of shale reservoir

Li Wuguang¹, Zhong Bing¹, Yang Hongzhi¹, Yang Xuefeng¹, Hu Zhiming², Chen Man¹

1. Exploration and Development Institute, PetroChina Southwest Oil & Gas Field Company, Sichuan Chengdu 610041, China;
2. Langfang Branch, PetroChina Research Institute of Petroleum Exploration & Development, Hebei Langfang 065007, China

Received:2015-06-26 Revised:2015-12-09 Online:2016-01-25 Published:2016-02-02

摘要/Abstract

摘要：

为了更好地评价页岩气在储层基质岩块中的流动能力,以便准确地预测页岩气水平井产量变化规律,以Fick第一定律为基础,依据物质平衡方程,建立了考虑在压差引起浓度差的作用下气体广义扩散能力评价模型,并提出了页岩气体扩散速率系数和扩散效率计算方法。在此基础上,设计了相应的页岩气体扩散能力评价实验装置和实验流程,通过在不同实验条件下的气体扩散实验,获得了随时间变化的气体累积扩散量,利用实验数据计算获得了页岩气体扩散系数、扩散速率系数、扩散效率及流动系数,进而对页岩扩散能力的影响因素进行分析。研究结果表明,页岩基质中的气体主要以广义扩散的方式为压裂裂缝中气体流动提供重要补充;页岩渗透率决定着页岩气体扩散能力大小,渗透率越大,扩散能力越强,而孔隙度与页岩扩散能力相关性小。

关键词: 页岩气, 扩散能力, 数学模型, 室内实验, 影响因素

Abstract:

To better evaluate the flow ability of shale gas in the matrix rock of reservoirs and accurately predict the yield variation laws of shale-gas horizontal well,based on the Fick's first law and material balance equation,the general gas diffusivity evaluation model was established in consideration of the gas concentration difference induced by pressure difference;the diffusion rate coefficient and diffusion efficiency of shale gas were proposed.On this basis,the corresponding experimental apparatus and flow were designed for shale gas diffusivity evaluation.Meanwhile,the cumulative gas diffusion amount changing over time was obtained through gas diffusion experiments under different conditions.Shale gas diffusion coefficient,diffusion rate coefficient,diffusion efficiency and flow coefficient were obtained using experimental data,so as to analyze the influence factors of shale gas diffusivity.The research results indicate that the gas in shale gas matrix provide important supplies for gas flow in fracturing fissures by means of general diffusion.The magnitude of shale gas diffusivity is determined by shale permeability.The greater the permeability is,the higher the diffusivity will be.The porosity has a small correlation with shale gas diffusivity.

Key words: shale gas, diffusivity, mathematical model, indoor experiment, influencing factors

中图分类号:

TE312

李武广, 钟兵, 杨洪志, 杨学锋, 胡志明, 陈满. 页岩储层基质气体扩散能力评价新方法[J]. 石油学报, 2016, 37(1): 88-96.

Li Wuguang, Zhong Bing, Yang Hongzhi, Yang Xuefeng, Hu Zhiming, Chen Man. A new method for gas diffusivity evaluation in matrix rocks of shale reservoir[J]. Acta Petrolei Sinica, 2016, 37(1): 88-96.

参考文献

[1] Bowker K A.Barnett shale gas production,Fort Worth Basin:issues and discussion[J].AAPG Bulletin,2007,91(4):523-533.
[2] 邹才能,董大忠,王社教,等.中国页岩气形成机理、地质特征及资源潜力[J].石油勘探与开发,2010,37(6):641-653.
Zou Caineng,Dong Dazhong,Wang Shejiao,et al.Geological characteristics,Formation mechanism and resource potential of shale gas in China[J].Petroleum Exploration and Development,2010,37(6):641-653.
[3] 龙鹏宇,张金川,唐玄,等.泥页岩裂缝发育特征及其对页岩气勘探和开发的影响[J].天然气地球科学,2011,22(3):525-532.
Long Pengyu,Zhang Jinchuan,Tang Xuan,et al.Feature of muddy shale fissure and its effect for shale gas exploration and development[J].Natural Gas Geoscience,2011,22(3):525-532.
[4] Fath E,Tinni A,Yucel I.Shale gas correction to klinkenberg slip theory[R].SPE 154977,2012.
[5] 李相方,蒲云超,孙长宇,等.煤层气与页岩气吸附/解吸的理论再认识[J].石油学报,2014,35(6):1113-1129.
Li Xiangfang,Pu Yunchao,Sun Changyu,et al.Recognition of absorption/desorption theory in coalbed methane reservoir and shale gas reservoir[J].Acta Petrolei Sinica, 2014,35(6):1113-1129.
[6] Palacio J C,Blasingame T A.Unavailable-decline-curve analysis with type curves-analysis of gas well production data[R].SPE 25909,1993.
[7] 李武广,杨胜来,徐晶,等.考虑地层温度和压力的页岩吸附气含量计算新模型[J].天然气地球科学,2012,23(4):791-796.
Li Wuguang,Yang Shenglai,Xu Jing,et al.A new model for shale adsorptive gas amount under a certain geological conditions of temperature and pressure[J].Natural Gas Geoscience,2012,23(4):791-796.
[8] 李武广,杨胜来,陈峰,等.温度对页岩吸附解吸的敏感性研究[J].矿物岩石,2012,32(2):115-120.
Li Wuguang,Yang Shenglai,Chen Feng,et al.The sensitivity study of shale gas adsorption and desorption with rising reservoir temperature[J].Journal of Mineralogy and Petrology,2012,32(2):115-120.
[9] Macqusker J,Davies S.Lithofacies variability in fine-grained mixed clastic carbonate successions:implications for identifying shale-gas reservoirs[C].Procceedings of Annual Meeting of American Association of Petroleum Geologists.San Antonio,Texas:AAPG,2008.
[10] 熊伟,郭为,刘洪林,等.页岩的储层特征以及等温吸附特征[J].天然气工业,2010,32(1):113-116.
Xiong Wei,Guo Wei,Liu Honglin,et al.Shale reservoir characteristics and isothermal adsorption properties[J].Natural Gas Industry,2010,32(1):113-116.
[11] 陈尚斌,朱炎铭,王红岩,等.川南龙马溪组页岩气储层纳米孔隙结构特征及其成藏意义[J].煤炭学报,2012,37(3):438-444.
Chen Shangbin,Zhu Yanming,Wang Hongyan,et al.Structure characteristics and accumulation significance of nanopores in Longmaxi shale gas reservoir in the southern Sichuan Basin[J].Journal of China Coal Society,2012,37(3):438-444.
[12] Milner M,McLin R,Petriello J.Imaging texture and porosity in mudstones and shales:comparison of secondary and lon-milled backscatter SEM methods[R].SPE 138975,2010.
[13] Javadpour F,Fisher D,Unsworth M.Nanoscale gas flow in shale gas sediments[J].Journal of Canadian Petroleum Technology,2007,46(10):55-61.
[14] Clarkson C R,Solano N,Bustin R M,et al.Pore structure characterization of North American shale gas reservoirs using USANS/SANS,gas adsorption,and mercury intrusion[J].Fuel,2013,103:606-616.
[15] 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.
[16] 王瑞,张宁生,刘晓娟,等.页岩气扩散系数和视渗透率的计算与分析[J].西北大学学报:自然科学版,2013,43(1):75-80.
Wang Rui,Zhang Ningsheng,Liu Xiaojuan,et al.The calculation and analysis of diffusion coefficient and apparent permeability of shale gas[J].Journal of Northwest University:Natural Science Edition,2013,43(1):75-80.
[17] 盛茂,李根生,黄中伟,等.考虑表面扩散的作用的页岩气瞬态流动模型[J].石油学报,2014,35(2):347-352.
Sheng Mao,Li Gensheng,Huang Zhongwei,et al.Shale gas transient flow model with effects of surface diffusion[J].Acta Petrolei Sinica,2014,35(2):347-352.
[18] 姚军,赵建林,张敏,等.基于格子Boltzmann方法的页岩气微观流动模拟[J].石油学报,2015,36(10):1280-1289.
Yao Jun,Zhao Jianlin,Zhang Min,et al.Microscale shale gas flow simulation based on Lattice Boltzmann method[J].Acta Petrolei Sinica,2015,36(10):1280-1289.
[19] 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.
Wu Keliu,Li Xiangfang,Chen Zhangxing.A model for gas transport through nanopores of shale gas reservoirs[J].Acta Petrolei Sinica,2015,36(7):837-848.
[20] Schepers K C,Gonzalez R J,Koperna G J,et al.Reservoir modeling in support of shale gas exploration[R].SPE 123057,2009.
[21] 李武广,钟兵,杨洪志,等.一种页岩气体扩散能力测试仪:中国,CN201420638719.3[P].2015-04-08.
Li Wuguang,Zhong Bing,Yang Hongzhi,et al.Tester for diffusivity of shale gas:China,CN201420638719.3[P].2014-04-08.
[22] Civan F.Modeling gas flow through hydraulically-fractured shale-gas reservoirs involving molecular-to-inertial transport regimes and threshold-pressure gradient[R].SPE 166324,2013.
[23] Freeman,C M.A numerical study of microscale flow behavior in tight gas and shale gas[R].SPE 141125,2010.
[24] Shabro V,Torres-Verdin C,Sepehrnoori K.Forecasting gas production in organic shale with the combined numerical simulation of gas diffusion in Kerogen,Langmuir desorption from Kerogen surfaces,and advection in Nanopores[R].SPE 159250,2012.
[25] Kuila U,Prasad M,Derkowski A,et al.Compositional controls on mudrock pore-size distribution:an example from Niobrara Formation[R].SPE 160141,2012.
[26] 李武广,钟兵,杨洪志,等.页岩储层含气性评价及影响因素分析:以长宁-威远国家级试验区为例[J].天然气地球科学,2014,25(10):1653-1660.
Li Wuguang,Zhong Bing,Yang Hongzhi,et al.Evaluation of gas-bearing property for shale reservoir and its influence factors analysis:taking Changning-Weiyuan national experimental zone as an example[J].Natural Gas Geoscience,2014,25(10):1653-1660.
[27] Marc Bustin R,Bustin A M M,Cui A,et al.Impact of shale properties on pore structure and storage characteristics[R].SPE 119892,2008.

页岩储层基质气体扩散能力评价新方法

A new method for gas diffusivity evaluation in matrix rocks of shale reservoir

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