Evaluation on In-situ Gas-bearing Characteristic of Shale Based on Process Analysis Method

doi:10.11885/j.issn.1674-5086.2021.02.01.03

Abstract

Abstract: In order to determine the total gas content, adsorbed/free gas contents and their ratios in shale, the process analysis method, a new quantitative method of evaluating the in-situ gas-bearing characteristic of shale was established. This method divides the whole process of drilling coring and field desorption into five stages, and evaluates the amount of gas (adsorbed and free gas) released in different stages in turn. After obtaining a series of data including drilling coring, reservoir physical property, adsorption/diffusion, gas characteristic and field analysis etc., this method can be used to obtain the gas-desorbed amount during the whole process, and obtain the in-situ total gas content, adsorbed/free gas contents and their ratios. This method is used to evaluate the gas-bearing characteristic of marine shale in the Wufeng Formation-Longmaxi Formation of Well JY182-6 in Jiaoshiba Block. Total gas content obtained with the process analysis method is 0.8~5.4 times (average 2.0 times) of the results of USBM direct method; the difference between the two methods is -1.27~1.58 m³/t (average 0.39 m³/t), and it decreases with the increasing gas-adsorbed ratio. Adsorbed gas content and its ratio are primarily controlled by total organic carbon content (positive correlation). Free gas content is controlled by porosity (positive correlation) and water saturation (negative correlation), and is affected by clay mineral content (weak positive correlation).

Key words: process analysis method, in-situ gas content, gas-adsorption ratio, shale gas, marine shale

CLC Number:

TE155

LI Junqian, LU Shuangfang, LI Wenbiao, CAI Jianchao. Evaluation on In-situ Gas-bearing Characteristic of Shale Based on Process Analysis Method[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2021, 43(5): 42-55.

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References

[1] JI Kun, GUO Shaobin, HOU Binchi. A logging calculation method for shale adsorbed gas content and its application[J]. Journal of Petroleum Science and Engineering, 2017, 150:250-256. doi:10.1016/j.petrol.2016.12.008
[2] 张雪芬,陆现彩,张林晔,等. 页岩气的赋存形式研究及其石油地质意义[J]. 地球科学进展,2010,25(6):597-604. doi:10.11867/j.issn.1001-8166.2010.06.0597 ZHANG Xuefen, LU Xiancai, ZHANG Linye, et al. Occurrences of shale gas and their petroleum geological significance[J]. Advances in Earth Science, 2010, 25(6):597-604. doi:10.11867/j.issn.1001-8166.2010.06.0597
[3] 周秦,田辉,陈桂华,等. 页岩孔隙水中溶解气的主控因素与地质模型[J]. 煤炭学报,2013,38(5):800-804. doi:10.13225/j.cnki.jccs.2013.05.014 ZHOU Qin, TIAN Hui, CHEN Guihua, et al. Geological model of dissolved gas in pore water of gas shale and its controlling factors[J]. Journal of China Coal Society, 2013, 38(5):800-804. doi:10.13225/j.cnki.jccs.2013.05.014
[4] 邹才能,董大忠,王玉满,等. 中国页岩气特征、挑战及前景(二)[J]. 石油勘探与开发,2016,43(2):166-178. doi:10.11698/PED.2016.02.02 ZOU Caineng, DONG Dazhong, WANG Yuman, et al. Shale gas in China:Characteristics, challenges and prospects(II)[J]. Petroleum Exploration and Development, 2016, 43(2):166-178. doi:10.11698/PED.2016.02.02
[5] 邹才能,赵群,董大忠,等. 页岩气基本特征、主要挑战与未来前景[J]. 天然气地球科学,2017,28(12):1781-1796. doi:10.11764/j.issn.1672-1926.2017.02.017 ZOU Caineng, ZHAO Qun, DONG Dazhong, et al. Geological characteristics, main challenges and future prospect of shale gas[J]. Natural Gas Geoscience, 2017, 28(12):1781-1796. doi:10.11764/j.issn.1672-1926.2017.02.017
[6] 刘洪林,王红岩. 中国南方海相页岩超低含水饱和度特征及超压核心区选择指标[J]. 天然气工业,2013,33(7):140-144. doi:10.3787/j.issn.1000-0976.2013.07.025 LIU Honglin, WANG Hongyan. Ultra-low water saturation characteristics and the identification of over-pressured play fairways of marine shales in south China[J]. Natural Gas Industry, 2013, 33(7):140-144. doi:10.3787/j.issn.1000-0976.2013.07.025
[7] 邹才能,董大忠,王玉满,等. 中国页岩气特征、挑战及前景(一)[J]. 石油勘探与开发,2015,42(6):689-701. doi:10.11698/PED.2015.06.01 ZOU Caineng, DONG Dazhong, WANG Yuman, et al. Shale gas in China:Characteristics, challenges and prospects(I)[J]. Petroleum Exploration and Development, 2015, 42(6):689-701. doi:10.11698/PED.2015.06.01
[8] PAN Zhejun, CONNELL L D. Modelling permeability for coal reservoirs:A review of analytical models and testing data[J]. International Journal of Coal Geology, 2012, 92:1-44. doi:10.1016/j.coal.2011.12.009
[9] WU Keliu, CHEN Zhangxing, LI Xiangfang. Real gas transport through nanopores of varying cross-section type and shape in shale gas reservoirs[J]. Chemical Engineering Journal, 2015, 281:813-825. doi:10.1016/j.cej.2015.07.012
[10] LI Junqian, LU Shuangfang, ZHANG Pengfei, et al. Estimation of gas-in-place content in coal and shale reservoirs:A process analysis method and its preliminary application[J]. Fuel, 2020, 259:116266. doi:10.1016/j.fuel.2019.116266
[11] 梁洪彬,张烈辉,陈满,等. 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. doi:10.11885/j.issn.1674-5086.2019.03.29.02 LIANG Hongbin, ZHANG Liehui, CHEN Man, et al. A new method of rapid evaluation of shale gas content[J]. Journal of Southwest Petroleum University (Seience & Technology Edition), 2020, 42(2):110-117. doi:10.11885/j.issn.1674-5086.2019.03.29.02
[12] LI Qianwen, PANG Xiongqi, TANG Ling, et al. Occurrence features and gas content analysis of marine and continental shales:A comparative study of Longmaxi Formation and Yanchang Formation[J]. Journal of Natural Gas Science & Engineering, 2018, 56:504-522. doi:10.1016/j.jngse.2018.06.019
[13] GOU Qiyang, XU Shang. Quantitative evaluation of free gas and adsorbed gas content of Wufeng-Longmaxi shales in the Jiaoshiba area, Sichuan Basin, China[J]. Advances in Geo-energy Research, 2019, 3(3):258-267. doi:10.26804/ager.2019.03.04
[14] LI Wenbiao, LU Shuangfang, LI Junqian, et al. Geochemical modeling of carbon isotope fractionation during methane transport in tight sedimentary rocks[J]. Chemical Geology, 2021, 565:120033. doi:10.1016/j.chemgeo.2020.120033
[15] MAHMOUD M. Development of a new correlation of gas compressibility factor (Z factor) for high pressure gas reservoirs[J]. Journal of Energy Resources Technology, 2014, 136(1):1-11.
[16] GASPARIK M, GHANIZADEH A, BERTIER P, et al. High pressure methane sorption isotherms of black shales from the Netherlands[J]. Energy & Fuel, 2012, 26(8):4995-5004. doi:10.1021/ef300405g
[17] POZO M, PINO D, BESSIERES D. Effect of thermal events on maturation and methane adsorption of Silurian black shales (Checa, Spain)[J]. Applied Clay Science, 2017, 136:208-218. doi:10.1016/j.clay.2016.11.026
[18] AYERS W B Jr. Coalbed gas systems, resources, and production and a review of contrasting cases from the San Juan and Powder River Basins[J]. AAPG Bulletin, 2002, 86(11):1853-1890.
[19] KING G R, ERTEKIN T, SCHWERER F C. Numerical simulation of the transient behavior of coal-seam degasification wells[C]. SPE 12258-PA, 1986. doi:10.2118/12258-PA
[20] YANG Zhaobiao, QIN Yong, WANG Zhaofeng, et al. Desorption-diffusion model and lost gas quantity estimation of coalbed methane from coal core under drilling fluid medium[J]. Science China Earth Science, 2010, 53(4):626-632. doi:10.1007/s11430-010-0027-x
[21] JARVIE D M. Shale resource systems for oil and gas:Part 1-Shale-gas resource systems[C]. AAPG Memoir, 2012, 97:69-87. doi:10.1306/13321446M973489
[22] ZHANG Luchuan, LI Bo, JIANG Shu, et al. Heterogeneity characterization of the lower Silurian Longmaxi marine shale in the Pengshui area, South China[J]. International Journal of Coal Geology, 2018, 195:250-266. doi:10.1016/j.coal.2018.05.015
[23] CHEN Guohui, LI Chun, LU Shuangfang, et al. Critical factors controlling adsorption capacity of shale gas in Wufeng-Longmaxi Formation, Sichuan Basin:Evidences from both experiments and molecular simulations[J]. Journal of Natural Gas Science and Engineering, 2021, 88:103774. doi:10.1016/j.jngse.2020.103774
[24] 刘大锰,李俊乾,李紫楠. 我国页岩气富集成藏机理及其形成条件研究[J]. 煤炭科学技术,2013,41(9):66-70,74. doi:10.13199/j.cnki.cst.2013.09.001 LIU Dameng, LI Junqian, LI Zinan. Research on enrichment and accumulation mechanism of shale gas and its formation conditions in China[J]. Coal Science and Technology, 2013, 41(9):66-70, 74. doi:10.13199/j.cnki.cst.2013.09.001
[25] ZHANG Tongwei, ELLIS G S, RUPPEL S C, et al. Effect of organic-matter type and thermal maturity on methane adsorption in shale-gas systems[J]. Organic Geochemistry, 2012, 47:120-131. doi:10.1016/j.orggeochem.2012.03. 012
[26] TAN Jingqiang, WENIGER P, KROOSS B, et al. Shale gas potential of the major marine shale formations in the Upper Yangtze Platform, South China, Part II:Methane sorption capacity[J]. Fuel, 2014, 129:204-218. doi:10.1016/j.fuel.2014.03.064
[27] GASPARIK M, BERTIER P, GENSTERBLUM Y, et al. Geological controls on the methane storage capacity in organic-rich shales[J]. International Journal of Coal Geology, 2014, 123:34-51. doi:10.1016/j.coal.2013.06.010
[28] LI Peng, JIANG Zhenxue, ZHENG Min, et al. Estimation of shale gas adsorption capacity of the Longmaxi Formation in the Upper Yangtze Platform, China[J]. Journal of Natural Gas Science and Engineering, 2016, 34:1034-1043. doi:10.1016/j.jngse.2016.07.052
[29] TIAN Hui, LI Tengfei, ZHANG Tongwei, et al. Characterization of methane adsorption on overmature Lower Silurian-Upper Ordovician shales in Sichuan Basin, Southwest China:Experimental results and geological implications[J]. International Journal of Coal Geology, 2016, 156:36-49. doi:10.1016/j.coal.2016.01.013
[30] 李文镖,卢双舫,李俊乾,等. 南方海相页岩物质组成与孔隙微观结构耦合关系[J]. 天然气地球科学,2019,30(1):31-42. doi:10.11764/j.issn.1672-1926.2018.10.001 LI Wenbiao, LU Shuangfang, LI Junqian, et al. The coupling relationship between material composition and pore microstructure of southern China marine shale[J]. Natural Gas Geoscience, 2019, 30(1):31-42. doi:10.11764/j.issn.1672-1926.2018.10.001
[31] LI Junqian, WANG Siyuan, LU Shuangfang, et al. Microdistribution and mobility of water in gas shale:A theoretical and experimental study[J]. Marine and Petroleum Geology, 2019, 102:496-507. doi:10.1016/j.marpetgeo.2019.01.012
[32] 吉利明,邱军利,张同伟,等. 泥页岩主要黏土矿物组分甲烷吸附实验[J]. 地球科学(中国地质大学学报),2012,37(5):1043-1050. doi:10.3799/dqkx.2012.111 JI Liming, QIU Junli, ZHANG Tongwei, et al. Experiments on methane adsorption of common clay minerals in shale[J]. Earth Science (Journal of China University of Geosciences), 2012, 37(5):1043-1050. doi:10.3799/dqkx.2012.111
[33] 李俊乾,卢双舫,张鹏飞,等. 页岩基质孔隙水定量表征及微观赋存机制[J].石油学报,2020,41(8):979-990. doi:10.7623/syxb202008007 LI Junqian, LU Shuangfang, ZHANG Pengfei, et al. Quantitative characterization and microscopic occurrence mechanism of pore water in shale matrix[J]. Acta Petrolei Sinica, 2020, 41(8):979-990. doi:10.7623/syxb202008007
[34] 胡志明,端祥刚,何亚彬,等. 储层原生水对页岩气赋存状态与流动能力的影响[J]. 天然气工业,2018,38(7):44-51. doi:10.3787/j.issn.1000-0976.2018.07.006 HU Zhiming, DUAN Xianggang, HE Yabin, et al. Influence of reservoir primary water on shale gas occurrence and flow capacity[J]. Natural Gas Industry, 2018, 38(7):44-51. doi:10.3787/j.issn.1000-0976.2018.07.006