Lithologic Reservoirs ›› 2020, Vol. 32 ›› Issue (3): 14-23.doi: 10.12108/yxyqc.20200302

• PETROLEUM GEOLOGY • Previous Articles     Next Articles

Multi-scale joint characterization of micro-pore structure of low-rank coal reservoir

YANG Fu1,2,3, HE Dan2,3, MA Dongmin1,2, DUAN Zhonghui2,3, TIAN Tao2,3, FU Deliang2,3   

  1. 1. College of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, China;
    2. Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Natural Resources, Xi'an 710021, China;
    3. Shaanxi Coal Geology Group Co., Ltd., Xi'an 710021, China
  • Received:2019-05-20 Revised:2019-09-04 Online:2020-05-21 Published:2020-04-30

PDF (PC)

515

Abstract: The multi-scale micro-pore structure is of great significance to the study of the adsorption/desorption process of coalbed methane in low rank coal reservoirs. Taking Jurassic Huanglong coalfield and Shaanbei coalfield as examples,the pore size distribution andpore types of low-rank coal reservoirs were measured by mercury injection, liquid nitrogen adsorption and CO2 adsorption. Combined with nuclear magnetic resonance,the pore size and multi-scale pore size distribution characteristics of low-rank coal were quantitatively analyzed. The results show that the pores of low-rank coal are mainly micropores,followed by macropores. The contribution rate of micropores,macropores and mesoporous pores to specific surface area decreased in turn.The pore types of low-rank coal reservoirs are mainly "columnar pore" and "ink bottle hole",which have good pore connectivity. The T2c cut-off value of the samples obtained by NMR method is 1.4-155.2 ms,which varies greatly. The bound fluid saturation(BVI) is 79.21%-96.96%,and the movable fluid saturation is low. The pore structure of low-rank coal reservoirs is complex and diverse,and there are great differences between single test technique and combined computing characterization method in the characterization of pore structures of low-rank coal reservoirs.

Key words: pore type, pore size distribution, nuclear magnetic resonance, low rank coal reservoir, Jurassic, Huanglong coalfield, Shaanbei coalfield

CLC Number: 

  • TE122.2
[1] 姚艳斌,刘大锰,黄文辉,等.两淮煤田煤储层孔-裂隙系统与煤层气产出性能研究.煤炭学报,2006,31(2):163-168. YAO Y B,LIU D M,HUANG W H,et al. Research on the porefractures system properties of coalbed methane reservoirs and recovery in Huainan and Huaibei coal-fields. Journal of China coal society,2006,31(2):163-168.
[2] 李子文,林柏泉,郝志勇,等.煤体孔径分布特征及其对瓦斯吸附的影响.中国矿业大学学报,2013,42(6):1047-1053. LI Z W,LIN B Q,HAO Z Y,et al. Characteristics of pore size distribution of coal and its impacts on gas adsorption. Journal of China University of Mining&Technology,2013,42(6):1047-1053.
[3] 张宪国,张涛,林承焰.基于孔隙分形特征的低渗透储层孔隙结构评价.岩性油气藏,2013,25(6):40-45. ZHANG X G,ZHANG T,LIN C Y. Pore structure evaluation of low permeability reservoir based on pore fractal features. Lithologic Reservoirs,2013,25(6):40-45.
[4] 李传亮,朱苏阳,彭朝阳,等.煤层气井突然产气机理分析.岩性油气藏,2017,29(2):145-149. LI C L,ZHU S Y,PENG C Y,et al. Mechanism of gas production rate outburst in coalbed methane wells. Lithologic Reservoirs,2017,29(2):145-149.
[5] 尹帅,谢润成,丁文龙,等.常规及非常规储层岩石分形特征对渗透率的影响.岩性油气藏,2017,29(4):81-90. YIN S,XIE R C,DING W L,et al. Influences of fractal characteristics of reservoir rocks on permeability. Lithologic Reservoirs, 2017,29(4):81-90.
[6] 中国国家标准化管理委员会. GB/T 21650.1-2008压汞法和气体吸附法测定固体材料孔径分布和孔隙度第1部分:压汞法.北京:中国标准出版社,2008. Standardization Management Committee of the People's Republic of China. GB/T 21650.1-2008 Pore size distribution and porosity of solid materials by mercury porosimetry and gas adsorption Part 1:Mercury porosimetry. Beijing:Standards Press of China, 2008.
[7] 田华,张水昌,柳少波,等.压汞法和气体吸附法研究富有机质页岩孔隙特征.石油学报,2012,33(3):419-427. TIAN H,ZHANG S C,LIU S B,et al. Determination of organicrich shale pore features by mercury injection and gas adsorption methods. Acta Petrolei Sinica,2012,33(3):419-427.
[8] 中国国家标准化管理委员会. GB/T 21650.2-2008压汞法和气体吸附法测定固体材料孔径分布和孔隙度第2部分:气体吸附法分析介孔和大孔.北京:中国标准出版社,2008. Standardization Management Committee of the People's Republic of China. GB/T 21650.2-2008 Pore size distribution and porosity of solid materials by mercury porosimetry and gas adsorption Part 2:Analysis of mesopores and macropores by gas adsorption. Beijing:Standards Press of China,2008.
[9] BUSTIN R M,BUSTIN A M M,CUI A,et al. Impact of shale properties on pore structure and storage characteristics. SPE 119892,2008.
[10] 姚艳斌,刘大锰,蔡益栋,等.基于NMR和X-CT的煤的孔裂隙精细定量表征.中国科学D辑:地球科学,2010,53(6):67-75. YAO Y B,LIU D M,CAI Y D,et al. Advanced characterization of pores and fractures in coals by nuclear magnetic resonance and X-ray computed tomography. Science in China Series D:Earth Sciences,2010,53(6):67-75.
[11] 周龙刚,吴财芳.黔西比德-三塘盆地主采煤层孔隙特征.煤炭学报,2012,37(11):1878-1884. ZHOU L G,WU C F. Pore characteristics of the main coal seams in Bide-Santang Basin in western Guizhou Province. Journal of China Coal Society,2012,37(11):1878-1884.
[12] 蔺亚兵,贾雪梅,马东民.基于液氮吸附法对煤的孔隙特征研究与应.煤炭科学技术,2016,44(3):135-140. LIN Y B,JIA X M,MA D M. Study and application of coal pore features based on liquid nitrogen adsorption method. Coal Science and Technology,2016,44(3):135-140.
[13] YAO Y B,LIU D M. Comparison of low-field NMR and mercury intrusion porosimetry in characterizing pore size distributions of coals. Fuel,2012,95:152-158.
[14] 谢松彬,姚艳斌,陈基瑜,等.煤储层微小孔孔隙结构的低场核磁共振研究.煤炭学报,2015,40(增刊1):170-176. XIE S B,YAO Y B,CHEN J Y,et al. Research of micropore structure in coal reservoir using low-field NMR. Journal of China Coal Society,2015,40(Suppl 1):170-176.
[15] 徐晓萌,马红星,田建伟,等.基于核磁共振技术的煤体微观孔隙结构研究.煤矿安全,2017,48(2):1-4. XU X M,MA H X,TIAN J W,et al. Study on microscopic pore structures of coal based on nuclear magnetic resonance technology. Safety in Coal Mines,2017,48(2):1-4.
[16] 王凯,乔鹏,王壮森,等.基于二氧化碳和液氮吸附,高压压汞和低场核磁共振的煤岩多尺度孔径表征.中国矿业,2017,26(4):146-152. WANG K,QIAO P,WANG Z S,et al. Multiple scale pore size characterization of coal based on carbon dioxide and liquid nitrogen adsorption,high-pressure mercury intrusion and low field nuclear magnetic resonance. China Mining Magazine,2017,26(4):146-152.
[17] 李阳,张玉贵,张浪,等.基于压汞、低温N2吸附和CO2吸附的构造煤孔隙结构表征.煤炭学报,2019,44(4):1188-1196. LI Y,ZHANG Y G,ZHANG L,et al. Characterization on pore structure of tectonic coals based on the method of mercury intrusion,carbon dioxide adsorption and nitrogen adsorption. Journal of China Coal Society,2019,44(4):1188-1196.
[18] 中国国家标准化管理委员会.GB/T 212-2008煤的工业分析方法.北京:中国标准出版社,2008. Standardization Management Committee of the People's Republic of China. GB/T 212-2008 Proximate analysis of coal. Beijing:Standards Press of China,2008.
[19] 中国国家标准化管理委员会. GB/T 8899-2013煤的显微组分组和矿物测定方法.北京:中国标准出版社,2013. Standardization Management Committee of the People's Republic of China. GB/T 8899-2013 Determination of maceral group composition and minerals in coal. Beijing:Standards Press of China,2013.
[20] 中国国家标准化管理委员会. GB/T 6948-2008煤的镜质体反射率显微镜测定方法.北京:中国标准出版社,2008. Standardization Management Committee of the People's Republic of China. GB/T 6948-2008 Standardization Administration of the People's Republic of China. Method of determining microscopically the reflectance of vitrinite in coal. Beijing:Standards Press of China,2008.
[21] 焦堃,姚素平,吴浩,等.页岩气储层孔隙系统表征方法研究进展.高校地质学报,2014,20(1):151-161. JIAO K,YAO S P,WU H,et al. Advances in characterization of pore system of gas shales. Geological Journal of China Universities,2014,20(1):151-161.
[22] 国家能源局. SY/T 6490-2014岩样核磁共振参数实验室测量规范.北京:石油工业出版社,2014. National Energy Administration. SY/T 6490-2014 Specification for measurement of rock NMR parameter in laboratory. Beijing:Petroleum Industry Press,2014.
[23] WASHBURN E W. Note on a method of determining the distribution of pore sizes in a porous material. Proceedings of the National Academy of Sciences of the United States of America, 1921,7(4):115-116.
[24] RITTER H L,DRAKE L C. Pore-size distribution in porous materials. I. Pressure porosimeter and determination of complete macro pore size distributions. Industrial and Engineering Chemistry,Analytical Edition,1945,17(12):782-786.
[25] ROOTARE H M,PRENZLOW C F. Surface areas from mercury porosimeter measurements. The Journal of Physical Chemistry, 1967,71(8):2733-2736.
[26] MATTHIAS T,KATSUMI K,ALEXANDER V N,et al. Physisorption of gases,with special reference to the evaluation of surface area and pore size distribution (IUPAC Technical Report). Pure and Applied Chemistry,2015,87(9/10):1051-1069.
[27] 陈萍,唐修义.低温氮吸附法与煤中微孔隙特征的研究.煤炭学报,2001,26(5):552-556. CHEN P,TANG X Y. The research on the adsorption of nitrogen in low temperature and micro-pore properties in coal. Journal of China Coal Society,2001,26(5):552-556.
[28] 赵俊龙,汤达祯,许浩,等.基于二氧化碳吸附实验的页岩微孔结构精细表征.大庆石油地质与开发,2015,34(5):156-161. ZHAO J L,TANG D Z,XU H,et al. Fine characterization of the shale micro-pore structures based on the carbon dioxide adsorption experiment. Petroleum Geology and Oilfield Development in Daqing,2015,34(5):156-161.
[29] 郑贵强,凌标灿,郑德庆,等.核磁共振实验技术在煤孔径分析中的应用.华北科技学院学报,2014,11(4):1-7. ZHENG G Q,LING B C,ZHENG D Q,et al. The application of nuclear magnetic resonance on analyzing aperture in coal. Journal of North China Institute of Science and Technology, 2014,11(4):1-7.
[30] 申辉林,朱伟峰,刘美杰.核磁共振录井T2谱截止值确定方法及其适应性研究.录井工程,2010,21(2):39-42. SHEN H L,ZHU W F,LIU M J. The method of determining T2 cutoff value in NMR logging and study on its applicability. Mudlogging Engineering,2010,21(2):39-42.
[31] QIN L,ZHAI C,LIU S,et al. Changes in the petrophysical properties of coal subjected to liquid nitrogen freeze-thaw-a nuclear magnetic resonance investigation. Fuel,2017,194:102-114.
[32] 朱卫华,印友法,蒋林华,等.硅粉水泥石中微孔孔径分布及其对强度的影响.建筑材料学报,2004,7(1):14-18. ZHU W H,YIN Y F,JIANG L H,et al. Study of micro pore size distribution and its effect on the strength of silica fume cement paste. Journal of Building Materials,2004,7(1):14-18.
[33] 何雨丹,毛志强,肖立志,等.核磁共振T2分布评价岩石孔径分布的改进方法.地球物理学报,2005,48(2):373-378. HE Y D,MAO Z Q,XIAO L Z,et al. An improved method of using NMR T2 distribution to evaluate pore size distribution. Chinese Journal of Geophysics,2005,48(2):373-378.
[34] YUAN Y,REZAEE R. Comparative porosity and pore structure assessment in shales:Measurement techniques,influencing factors and implications for reservoir characterization. Energies, 2019,12(11):2094-2108.
[35] 胡彪,程远平,王亮.原生结构煤与构造煤孔隙结构与瓦斯扩散特性研究.煤炭科学技术,2018,46(3):103-107. HU B,CHENG Y P,WANG L. Study on porous structure and gas diffusion characteristics of primary structure coal and tectonic coal. Coal Science and Technology,2018,46(3):103-107.
[36] FU H,WANG X,ZHANG L,et al. Investigation of the factors that control the development of pore structure in lacustrine shale:a case study of block X in the Ordos Basin,China. Journal of Natural Gas Science and Engineering,2015,26:1422-1432.
[1] YU Qixiang, LUO Yu, DUAN Tiejun, LI Yong, SONG Zaichao, WEI Qingliang. Reservoir forming conditions and exploration prospect of Jurassic coalbed methane encircling Dongdaohaizi sag，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(6): 45-55.
[2] ZHANG Tianze, WANG Hongjun, ZHANG Liangjie, ZHANG Wenqi, XIE Mingxian, LEI Ming, GUO Qiang, ZHANG Xuerui. Application of ray-path elastic impedance inversion in carbonate gas reservoir prediction of the right bank of Amu Darya River [J]. Lithologic Reservoirs, 2024, 36(6): 56-65.
[3] GOU Honguang, LIN Tong, FANG Qiang, ZHANG Hua, LI Shan, CHENG Yi, You Fan. Stratigraphic division of astronomical cycle in early-middle Jurassic Shuixigou Group in the Shengbei subsag of Tuha Basin [J]. Lithologic Reservoirs, 2024, 36(6): 89-97.
[4] YAN Xueying, SANG Qin, JIANG Yuqiang, FANG Rui, ZHOU Yadong, LIU Xue, LI Shun, YUAN Yongliang. Main controlling factors for the high yield of tight oil in the Jurassic Da’anzhai Section in the western area of Gongshanmiao, Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(6): 98-109.
[5] LI Daoqing, CHEN Yongbo, YANG Dong, LI Xiao, SU Hang, ZHOU Junfeng, QIU Tingcong, SHI Xiaoqian. Intelligent comprehensive prediction technology of coalbed methane “sweet spot”reservoir of Jurassic Xishanyao Formation in Baijiahai uplift，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(6): 23-35.
[6] ZHANG Peijun, XIE Mingxian, LUO Min, ZHANG Liangjie, CHEN Renjin, ZHANG Wenqi, YUE Xingfu, LEI Ming. Analysis of deformation mechanism of ultra thick gypsum salt rock and its significance for oil and gas reservoir formation：A case study of the Jurassic gypsum salt layers in theAgayry region，eastern right bank of theAmu Darya River [J]. Lithologic Reservoirs, 2024, 36(6): 36-44.
[7] QIAO Tong, LIU Chenglin, YANG Haibo, WANG Yifeng, LI Jian, TIAN Jixian, HAN Yang, ZHANG Jingkun. Characteristics and genetic mechanism of condensate oil and gas of the Jurassic Sangonghe Formation in western well Pen-1 sag，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(6): 169-180.
[8] CHEN Kang, DAI Juncheng, WEI Wei, LIU Weifang, YAN Yuanyuan, XI Cheng, LYU Yan, YANG Guangguang. Lithofacies classification of tight sandstone based on Bayesian Facies-AVO attributes：A case study of the first member of Jurassic Shaximiao Formation in central Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(5): 111-121.
[9] KONG Lingfeng, XU Jiafang, LIU Ding. Pore structure characteristics and dehydration evolution of lignite reservoirs of Jurassic Xishanyao Formation in Santanghu Basin [J]. Lithologic Reservoirs, 2024, 36(5): 15-24.
[10] ZHANG Xiaoli, WANG Xiaojuan, ZHANG Hang, CHEN Qin, GUAN Xu, ZHAO Zhengwang, WANG Changyong, TAN Yaojie. Reservoir characteristics and main controlling factors of Jurassic Shaximiao Formation in Wubaochang area，northeastern Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(5): 87-98.
[11] HE Wenyuan, CHEN Keyang. Prediction method for lithologic reservoirs in Doshan slope zone of South Turgai Basin，Kazakhstan [J]. Lithologic Reservoirs, 2024, 36(4): 1-11.
[12] ZOU Liansong, XUWenli, LIANG Xiwen, LIU Haotian, ZHOU Kun, HOU Fei, ZHOU Lin, WEN Huaguo. Sedimentary characteristics and sources of shale of Dongyuemiao member of Lower Jurassic Ziliujing Formation in eastern Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(4): 122-135.
[13] BAI Xuefeng, LI Junhui, ZHANG Dazhi, WANG Youzhi, LU Shuangfang, SUI Liwei, WANG Jiping, DONG Zhongliang. Geological characteristics and enrichment conditions of shale oil of Jurassic Lianggaoshan Formation in Yilong-Pingchang area，Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(2): 52-64.
[14] LI Qihui, REN Dazhong, NING Bo, SUN Zhen, LI Tian, WAN Cixuan, YANG Fu, ZHANG Shiming. Micro-pore structure characteristics of coal seams of Jurassic Yan’an Formation in Shenmu area，Ordos Basin [J]. Lithologic Reservoirs, 2024, 36(2): 76-88.
[15] WANG Xiaojuan, CHEN Shuangling, XIE Jirong, MA Hualing, ZHU Deyu, PANG Xiaoting, YANG Tian, LYU Xueying. Accumulation characteristics and main controlling factors of tight sandstone of Jurassic Shaximiao Formation in southwestern Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(1): 78-87.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] HUANG Sijing,HUANG Peipei,WANG Qingdong,LIU Haonian,WU Meng,ZOU Mingliang. The significance of cementation in porosity preservation in deep-buried sandstones[J]. Lithologic Reservoirs, 2007, 19(3): 7 -13 .
[2] LIU Zhen,CHEN Yanpeng,ZHAO Yang,HAO Qi,XU Xiaoming,CHANG Mai. Distribution and controlling factors of hydrocarbon reservoirs in continental fault basins[J]. Lithologic Reservoirs, 2007, 19(2): 121 -127 .
[3] DING Chao，GUO Lan，YAN Jifu. Forming conditions of Chang 6 reservoir in Anding area of Zichang Oilfield[J]. Lithologic Reservoirs, 2009, 21(1): 46 -50 .
[4] LI Yanshan，ZHANG Zhansong，ZHANG Chaomo，CHEN Peng. Application of mercury injection data to Chang 6 reservoir classification in Changqing area[J]. Lithologic Reservoirs, 2009, 21(2): 91 -93 .
[5] LUO Peng,LI Guorong,SHI Zejin,ZHOU Dazhi,TANG Hongwei,ZHANG Deming. Analysis of sequence stratigraphy and sedimentary facies of M aokou Formation in southeastern Sichuan[J]. Lithologic Reservoirs, 2010, 22(2): 74 -78 .
[6] ZUO Guoping， TU Xiaolong， XIA Jiufeng. Study on volcanic reservoir types in Subei exploration area[J]. Lithologic Reservoirs, 2012, 24(2): 37 -41 .
[7] WANG Feiyu. Method to improve producing degree of thermal recovery horizontal wells and its application[J]. Lithologic Reservoirs, 2010, 22(Z1): 100 -103 .
[8] YUAN Yunfeng，CAI Ye，FAN Zuochun，JIANG Yiyang，QIN Qirong， JIANG Qingping. Fracture characteristics of Carboniferous volcanic reservoirs in Hongche fault belt of Junggar Basin[J]. Lithologic Reservoirs, 2011, 23(1): 47 -51 .
[9] YUAN Jianying， FU Suotang， CAO Zhenglin， YAN Cunfeng，ZHANG Shuichang， MA Dade. Multi-source hydrocarbon generation and accumulation of plateau multiple petroleum system in Qaidam Basin[J]. Lithologic Reservoirs, 2011, 23(3): 7 -14 .
[10] SHI Zhanzhan， HE Zhenhua， WEN Xiaotao， TANG Xiangrong. Reservoir detection based on EMD and GHT[J]. Lithologic Reservoirs, 2011, 23(3): 102 -105 .
TRENDMD:

Copyright © 2018 Lithologic Reservoirs

Support by Beijing Magtech support@magtech.com.cn