四川盆地元坝地区自流井组页岩储层孔隙结构特征

doi:10.11743/ogg20210412

Abstract

Abstract:

Shale of the Ziliujing Formation in Yuanba area of Sichuan Basin, currently at a critical stage of exploration, is one of the main research targets of terrestrial shale gas.As a significant index to evaluate the storage capacity of shale reservoirs, shale pore structure is the key to clarify the enrichment mechanism of shale gas.In this study, the pore structure is quantitatively characterized through an integration of total organic carbon (TOC) content tests, whole rock X-ray diffraction, combined experiment of N₂ adsorption and high-pressure mercury intrusion for pore size and scanning electron microscopy (SEM) after argon ion milling.The results show that the Ziliujing Formation shale is dominated by clay minerals, accounting for 38.8% to 67.3% with an average of 52.8%;the pores are mainly matrix pores, followed by organic pores, and with micro-fractures developed locally.The hysteresis loops of N₂ adsorption reflect the well development of parallel plate-like slit pores together with a small amount of ink bottle-shaped pores.The main interval of pore size distribution falls in mesopores.Compared with Dongyuemiao Member, Da'anzhai Member contains fewer micropores and more macropores, leading to a higher median value of pore size and pore volume, while a relatively smaller specific surface area (SSA).The pore volume and SSA of shale reservoirs in the Ziliujing Formation depend on clay minerals.The pore volume and SSA are in a negative correlation or irrelevant with the TOC content, mainly due to the infertility of organic pores in vitrinite and filament and the occupation of pore volume and adsorption sites by soluble organic matters.These will be of referential significance to the exploration of terrestrial shale gas in the study area.

Key words: pore structure, quantitative characterization, terrestrial shale reservoir, Ziliujing Formation, Yuanba area, Sichuan Basin

CLC Number:

TE122.2

Tao Jiang, Zhijun Jin, Guangxiang Liu, Zongquan Hu, Quanyou Liu, Zhongbao Liu, Pengwei Wang, Ruyue Wang, Tao Yang, Guanping Wang. Pore structure characteristics of shale reservoirs in the Ziliujing Formation in Yuanba area, Sichuan Basin[J]. Oil & Gas Geology, 2021, 42(4): 909-918.

Figures/Tables 10

Fig.1

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

Fig.9

Fig.10

References 40

1	Curtis J B . Fractured Shale-gas systems[J]. AAPG Bulletin, 2002, 86 (11): 1921- 1938.
2	董大忠, 王玉满, 李新景, 等. 中国页岩气勘探开发新突破及发展前景思考[J]. 天然气工业, 2016, 36 (1): 19- 32.
	Dong Dazhong , Wang Yuman , Li Jingxin , et al. Breakthrough and prospect of shale gas exploration and development in China[J]. Natural Gas Industry, 2016, 36 (1): 19- 32.
3	Montgomery S L , Jarvie D M , Bowker K A , et al. Mississippian Barnett shale, Fort Worth Basin, north-central Texas: Gas shale play with Multitrillion Cubic Foot Potential[J]. AAPG Bulletin, 2005, 89 (2): 155- 175. doi: 10.1306/09170404042
4	董大忠, 邹才能, 戴金星, 等. 中国页岩气发展战略对策建议[J]. 天然气地球科学, 2016, 27 (3): 397- 406.
	Dong Dazhong , Zou Caineng , Dai Jinxing , et al. Suggestions on the development strategy of shale gas in China[J]. Natural Gas Geos cience, 2016, 27 (3): 397- 406.
5	Zhang K , Jiang Z , Yin L , et al. Controlling functions of hydrothermal activity to shale gas content: Taking lower Cambrian in Xiuwu Basin as an example[J]. Marine and Petroleum Geology, 2017, 85, 177- 193. doi: 10.1016/j.marpetgeo.2017.05.012
6	袁玉松, 方志雄, 何希鹏, 等. 彭水及邻区龙马溪组页岩气常压形成机制[J]. 油气藏评价与开发, 2020, 10 (1): 9- 16.
	Yuan Yusong , Fang Zhixiong , He Xipeng , et al. Normal pressure formation mechanism of Longmaxi shale gas in Pengshui and its adjacent areas[J]. Reservoir Evaluation and Development, 2020, 10 (1): 9- 16.
7	高波, 刘忠宝, 舒志国, 等. 中上扬子地区下寒武统页岩气储层特征及勘探方向[J]. 石油与天然气地质, 2020, 41 (2): 284- 294.
	Gao Bo , Liu Zhongbao , Shu Zhiguo , et al. Reservoir characteristics and exploration of the Lower Cambrian shale gas in the Middle-Upper Yangtze area[J]. Oil & Gas Geology, 2020, 41 (2): 284- 294.
8	朱彤, 包书景, 王烽. 四川盆地陆相页岩气形成条件及勘探开发前景[J]. 天然气工业, 2012, (9): 16- 21+126-127. doi: 10.3787/j.issn.1000-0976.2012.09.004
	Zhu Tong , Bao Shujin , Wang Feng . Pooling conditions of non-marine shale gas in the Sichuan Basin and its exploration and development prospect[J]. Natural Gas Industry, 2012, (9): 16- 21+126-127. doi: 10.3787/j.issn.1000-0976.2012.09.004
9	金之钧, 胡宗全, 高波, 等. 川东南地区五峰组-龙马溪组页岩气富集与高产控制因素[J]. 地学前缘, 2016, 23 (1): 1- 10.
	Jin Zhijun , Hu Zongquan , Gao Bo , et al. Controlling factors on the enrichment and high productivity of shale gas in the Wufeng-Longmaxi Formations, southeastern Sichuan Basin[J]. Earth Science Frontiers, 2016, 23 (1): 1- 10.
10	龙胜祥, 曹艳, 朱杰, 等. 中国页岩气发展前景及相关问题初探[J]. 石油与天然气地质, 2016, 37 (6): 847- 853.
	Long Shengxiang , Cao Yan , Zhu Jie , et al. A preliminary study on prospects for shale gas industry in China and relevant issues[J]. Oil & Gas Geology, 2016, 37 (6): 847- 853.
11	杨峰, 宁正福, 孔德涛, 等. 高压压汞法和氮气吸附法分析页岩孔隙结构[J]. 天然气地球科学, 2013, 24 (3): 450- 455.
	Yang Feng , Ning Zhengfu , Kong Detao , et al. Pore structure of shales from High Pressure Mercury Injection and Nitrogen Adsorption method[J]. Natural Gas Geoscience, 2013, 24 (3): 450- 455.
12	姜振学, 唐相路, 李卓, 等. 川东南地区龙马溪组页岩孔隙结构全孔径表征及其对含气性的控制[J]. 地学前缘, 2016, 23 (2): 126- 134.
	Jiang Zhenxue , Tang Xianglu , Li Zhuo , et al. The whole-aperture pore structure characteristics and its effect on gas content of the Longmaxi Formation shale in the southeastern Sichuan Basin[J]. Earth Science Frontiers, 2016, 23 (2): 126- 134.
13	陈尚斌, 朱炎铭, 王红岩, 等. 川南龙马溪组页岩气储层纳米储集能力特征及其成藏意义[J]. 煤炭学报, 2012, 37 (3): 438- 444.
	Chen Shangbin , Zhu Yanming , Wang Hongyan , et al. Structure cha-racteristics 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.
14	蔡潇, 靳雅夕, 叶建国, 等. 一种页岩有机孔与无机孔定量表征的方法[J]. 油气藏评价与开发, 2020, 10 (1): 30- 36.
	Cai Xiao , Jin Yaxi , Ye Jianguo , et al. A quantitative characterization method for organic and inorganic pores in shale[J]. Reservoir Evaluation and Development, 2020, 10 (1): 30- 36.
15	Tang X L , Jiang Z X , Li Z , et al. The effect of the variation in material composition on the heterogeneous pore structure of high maturity shale of the Silurian Longmaxi Formation in the Southeastern Sichuan Basin, China[J]. Journal of Natural Gas Science and Engineering, 2015, 23, 464- 473. doi: 10.1016/j.jngse.2015.02.031
16	Jiang T , Jin Z J , Hu Z Q , et al. , Three-Dimensional morphology and connectivity of organic pores in shale from the Wufeng and Longmaxi Formations at the southeast Sichuan Basin in China[J]. Geofluids, 2021, 5579169.
17	杨峰, 宁正福, 胡昌蓬, 等. 页岩储层微观孔隙结构特征[J]. 石油学报, 2013, 34 (2): 301- 311.
	Yang Feng , Ning Zhengfu , Hu Changpeng , et al. Characterization of microscopic pore structures in shale reservoirs[J]. Acta Petrolei Sinica, 2013, 34 (2): 301- 311.
18	曾维特, 张金川, 丁文龙, 等. 延长组陆相页岩含气量及其主控因素-以鄂尔多斯盆地柳坪171井为例[J]. 天然气地球科学, 2014, 25 (2): 291- 301.
	Zeng Weite , Zhang Jinchuan , Ding Wenlong , et al. The gas content of continental Yanchang Shale and its main controlling factors: A case study of Liupi-171 Well in Ordos Basin[J]. Natural Gas Geo-science, 2014, 25 (2): 291- 301.
19	李廷微, 姜振学, 宋国奇, 等. 陆相和海相页岩储层孔隙结构差异性分析[J]. 油气地质与采收率, 2019, 26 (01): 65- 71.
	Li Tingwei , Jiang Zhenxue , Song Guoqi , et al. Analysis of differences in pore structure between continental and marine shale reservoirs[J]. Petroleum Geology and Recovery Efficiency, 2019, 26 (1): 65- 71.
20	Loucks R G , Reed R M , Ruppel S C , et al. Morphology, genesis, and distribution of nanometer scale pores in siliceous mudstones of the Mississippian Barnett Shale[J]. Journal of Sedimentary Research, 2009, 79, 848- 861.
21	郑军卫, 孙德强, 李小燕, 等. 页岩气勘探开发技术进展[J]. 天然气地球科学, 2011, 22 (3): 511- 517.
	Zheng Junwei , Sun Deqiang , Li Xiaoyan , et al. Advances in exploration and exploitation technologies of shale gas[J]. Natural Gas Geoscience, 2011, 22 (3): 511- 517.
22	Chen L , Jiang Z X , Liu K Y , et al. Pore structure characterization for organic-rich Lower Silurian shale in the Upper Yangtze Platform, South China: A possible mechanism for pore development[J]. Journal of Natural Gas Science and Engineering, 2017, 46, 1- 15.
23	Wang P F , Jiang Z X , Yin L S , et al. Lithofacies classification and its effect on pore structure of the Cambrian marine shale in the Upper Yangtze Platform, South China: Evidence from FE-SEM and gas adsorption analysis[J]. Journal of Petroleum Science and Engineering, 2017, 156, 307- 321.
24	刘忠宝, 胡宗全, 刘光祥, 等. 四川盆地东北部下侏罗统自流井组陆相页岩储层孔隙特征及形成控制因素[J]. 石油与天然气地质, 2021, 42 (1): 136- 145.
	Liu Hongbao , Hu Zongquan , Liu Guangxiang , et al. Pore characteristics and controlling factors of continental shale reservoirs in the Lower Jurassic Ziliujing Formation, northeastern Sichuan Basin[J]. Oil & Gas Geology, 2021, 42 (1): 136- 145.
25	郭彤楼. 四川盆地北部陆相大气田形成与高产主控因素[J]. 石油勘探与开发, 2013, 40 (2): 139- 149.
	Guo Tonglou . Key controls on accumulation and high production of large non-marine gas fields in northern Sichuan Basin[J]. Petroleum Exploration and Development, 2013, 40 (2): 139- 149.
26	张莉, 邹华耀, 郝芳, 等. 川东北元坝地区须家河组储层特征与超致密成因探讨[J]. 地质学报, 2017, 91 (9): 2105- 2118.
	Zhang Li , Zou Huayao , Hao Fang , et al. Characteristics and densification causes and of highly-tight sandstone of theXujiahe Formation (T₃x²) in the Yuanba area, Northeastern Sichuan Basin[J]. Acta Geologica Sinica, 2017, 91 (9): 2105- 2118.
27	厚东琳. 白云石化对储层发育的控制作用——以普光、元坝气田飞仙关组为例[J]. 断块油气田, 2019, 26 (4): 449- 452.
	Hou Donglin . Control effect of dolomitization on reservoir development: taking Feixianguan Formation in Puguang and Yanba gas fields for example[J]. Fault-Block Oil and Gas Field, 2019, 26 (4): 449- 452.
28	周德华, 焦方正, 郭旭升, 等. 川东北元坝区块中下侏罗统页岩油气地质分析[J]. 石油实验地质, 2013, 35 (6): 596- 600+656.
	Zhou Dehua , Jiao Fangzheng , Guo Xusheng , et al. Geologic analysis of Middle-Lower Jurassic shale reservoirs inYuanba area, northeastern Sichuan Basin[J]. Petroleum Geology & Experiment, 2013, 35 (6): 596- 600+656.
29	周德华, 焦方正, 郭旭升, 等. 川东南涪陵地区下侏罗统页岩油气地质特征[J]. 石油与天然气地质, 2013b, 34 (4): 450- 454.
	Zhou Dehua , Jiao Fangzheng , Guo Xusheng , et al. Geologic analysis of Middle-Lower Jurassic shale reservoirs in Yuanba area, northeastern Sichuan Basin[J]. Oil & Gas Geology, 2013b, 34 (4): 450- 454.
30	王良军, 王庆波. 四川盆地涪陵自流井组页岩气形成条件与勘探方向[J]. 西北大学学报(自然科学版), 2013, 43 (5): 757- 764.
	Wang Liangjun , Wang Qingbo . Formation conditions and explorative directions of Jurassic shale gas in Fuling Sichuan Basin[J]. Journal of Northwest University (Natural Science Edition), 2013, 43 (5): 757- 764.
31	聂海宽, 马鑫, 余川, 等. 川东下侏罗统自流井组页岩储层特征及勘探潜力评价[J]. 石油与天然气地质, 2017, 38 (3): 438- 447.
	Nie Haikuan , Ma Xin , Yu Chuan , et al. Shale gas reservoir characte-ristics and its exploration potential-analysis on the Lower Jurassic shale in the eastern Sichuan Basin[J]. Oil & Gas Geology, 2017, 38 (3): 438- 447.
32	Romero-Sarmiento M F , Rouzaud J N , Bernard S , et al. Evolution of Barnett Shale organic carbon structure and nanostructure with increasing maturation[J]. Organic Geochemistry, 2014, 71 (6): 7- 16.
33	郭旭升, 李宇平, 刘若冰, 等. 四川盆地焦石坝地区龙马溪组页岩微观孔隙结构特征及其控制因素[J]. 天然气工业, 2014, 34 (6): 9- 16.
	Gou Xusheng , Li Yuping , Liu Ruobing , et al. Characteristics and controlling factors of micro-pore structures of Longmaxi Shale Play in the Jiaoshiba area, Sichuan Basin[J]. Natural Gas Industry, 2014, 34 (6): 9- 16.
34	杨超, 张金川, 李婉君, 等. 辽河坳陷沙三、沙四段泥页岩微观孔隙特征及其成藏意义[J]. 石油与天然气地质, 2014, 35 (2): 286- 294.
	Yang Chao , Zhang Jinchuan , Li Wanjun , et al. Microscopic pore cha racteristics of Sha-3 and Sha-4 shale and their accumulation significance inLiaohe Depression[J]. Oil & Gas Geology, 2014, 35 (2): 286- 294.
35	Cao T T , Song Z G , Wang S B , et al. Characterizing the pore structure in the Silurian and Permian shales of the Sichuan Basin, China[J]. Marine and Petroleum Geology, 2015, 61, 140- 150.
36	管全中, 董大忠, 王淑芳, 等. 海相和陆相页岩储层微观结构差异性分析[J]. 天然气地球科学, 2016, 27 (3): 524- 531.
	Guan Quanzhong , Dong Dazhong , Wang Shufang , et al. Analyses on differences of microstructure between marine and lacustrine facies shale reservoirs[J]. Natural Gas Geoscience, 2016, 27 (3): 524- 531.
37	汪虎, 何治亮, 张永贵, 等. 四川盆地海相页岩储层微裂缝类型及其对储层物性影响[J]. 石油与天然气地质, 2019, 40 (1): 41- 49.
	Wang Hu , He Zhiliang , Zhang Yonggui , et al. Microfracture types of marine shale reservoir of Sichuan Basin and its influence on reservoirproperty[J]. Oil & Gas Geology, 2019, 40 (1): 41- 49.
38	唐相路, 姜振学, 李卓, 等. 渝东南地区龙马溪组高演化页岩微纳米孔隙非均质性及主控因素[J]. 现代地质, 2016, 30 (1): 163- 171.
	Tang Xianglu , Jiang Zhenxue , Li Zhuo , et al. Micro/nano pore heterogeneity and main controlling factors of the high-maturity Longmaxi Formation shale in southeastern Chongqing[J]. Geoscience, 2016, 30 (1): 163- 171.
39	李成成, 周世新, 李靖, 等. 鄂尔多斯盆地南部延长组泥页岩孔隙特征及其控制因素[J]. 沉积学报, 2017, 35 (2): 315- 329.
	Li Chengcheng , Zhou Shixin , Li Jing , et al. Pore characteristics and controlling factors of the Yanchang Formation mudstone and shale in the south of Ordos Basin[J]. Acta Sedimentologica Sinica, 2017, 35 (2): 315- 329.
40	曹涛涛, 邓模, 刘虎, 等. 可溶有机质对泥页岩储集物性的影响[J]. 岩性油气藏, 2018, 30 (3): 43- 51.
	Cao Taotao , Deng Mo , Liu Hu , et al. Influences of soluble organic matter on reservoir properties of shale[J]. Lithologic Reservoirs, 2018, 30 (3): 43- 51.

[1]	Herong Zheng, Zhongqun Liu, Shilin Xu, Zhenfeng Liu, Junlong Liu, Zhiwen Huang, Yanqing Huang, Zhiliang Shi, Qingzhao Wu, Lingxiao Fan, Jinhui Gao. Progress and key research directions of tight gas exploration and development inXujiahe Formation, Sinopec exploration areas, Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(4): 765-783.
[2]	Zhensheng Shi, Xiaomin Zhu, Yaxiong Zhang, Hui Jin. Advances and trending topics in sedimentary reservoir research ofthe Upper Triassic Xujiahe Formation, Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(4): 784-800.
[3]	Hongde Chen, Lei Liu, Liangbiao Lin, Xinglong Wang, Zhiwei Wang, Yu Yu, Jian Zeng, Pengwei Li. Depositional responses of Xujiahe Formation to the uplifting ofLongmenshan during the Late Triassic, Western Sichuan Depression [J]. Oil & Gas Geology, 2021, 42(4): 801-815.
[4]	Liangbiao Lin, Yu Yu, Hongli Nan, Hongde Chen, Lei Liu, Dong Wu, Zhikang Wang. Reservoir tightening process and its coupling relationship with hydrocarbon accumulation in the fourth member of Upper Triassic Xujiahe Formation in theWestern Sichuan Depression, Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(4): 816-828.
[5]	Sujuan Ye, Yingtao Yang, Ling Zhang. Characteristics and distribution of "sweet spot" reservoirs in the third and fifth members of Upper Triassic Xujiahe Formation, Western Sichuan Depression, Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(4): 829-840, 862.
[6]	Zhanghua Lou, Yizhe Su, Rong Zhu, Yifeng Liu, Shilin Xu, Wangpeng Li. Dynamic chemical characteristics and origin of formation water in the second member of Xujiahe Formation, Xinchang structural belt, Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(4): 841-851.
[7]	Junlong Liu, Zongquan Hu, Zhongqun Liu, Wujun Jin, Kaihua Xiao, Youyi Bi, Jitong Li. Gas pool sweet spot models and their forming mechanism in the Xu 2 Member in Xinchang area, Western Sichuan Depression, Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(4): 852-862.
[8]	Yanqing Huang, Zhongqun Liu, Tian Lin, Kaihua Xiao, Ai Wang, Mingxi Xue, Zhizhou Huo. Lithofacies-based prediction of relatively high-quality reservoirs of the Xu 3 Member in Yuanba area, northeastern Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(4): 863-872.
[9]	Renchun Huang, Ruobing Liu, Ming Liu, Huanyu Cao, Sai Su, Hongquan Du. Characteristics and genesis of fault-fracture reservoirs in the Xujiahe Formation, Tongjiang-Malubei area, northeastern Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(4): 873-883.
[10]	Wangpeng Li, Zhongqun Liu, Zongquan Hu, Wujun Jin, Pengwei Li, Junlong Liu, Shilin Xu, Anlai Ma. Characteristics of and main factors controlling the tight sandstone reservoir fractures in the 2^nd member of Xujiahe Formation in Xinchang area, Western Sichuan Depression, Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(4): 884-897, 1010.
[11]	Jinbao Duan, Mindong Jin, Zhiwei Fan, Xiang Zhu, Yanting Liu. Characteristics and favorable plays for high-quality reservoirs in the Middle Triassic Lei 4 Member, Yuanba area, northeastern Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(4): 898-908.
[12]	Zhen Qiu, Hengye Wei, Hanlin Liu, Nan Shao, Yuman Wang, Leifu Zhang, Qin Zhang. Accumulation of sediments with extraordinary high organic matter content: Insight gained through geochemical characterization of indicative elements [J]. Oil & Gas Geology, 2021, 42(4): 931-948.
[13]	Jincai Zhang, Xin Fan, Zhiwen Huang, Zhongqun Liu, Yuanchang Qi. Assessment of anisotropic in-situ stressses in the Upper Triassic Xujiahe Formation reservoirs in Western Sichuan Depression of the Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(4): 963-972.
[14]	Zhenfeng Liu, Zhongquan Liu, Yuanling Guo, Yuxin Ji, Wangpeng Li, Tian Lin, Tiansheng Chen, Wujun Jin. Concept and geological model of fault-fracture reservoir and their application in seismic fracture prediction: A case study on the Xu 2 Member tight sandstone gas pool in Xinchang area, Western Sichuan Depression in Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(4): 973-980.
[15]	Wei Wang, Rui Fan, Chengyin Li, Dapeng Qu, Lamei Zhang, Kelu Su. Exploration and prediction of promising fault-fracture reservoirs in the Xujiahe Formation, northeastern Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(4): 992-1001.

Pore structure characteristics of shale reservoirs in the Ziliujing Formation in Yuanba area, Sichuan Basin

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 10

References 40

Related Articles 15

Recommended Articles

Metrics