鄂西宜昌地区下古生界五峰组-龙马溪组页岩气储层发育特征与勘探潜力

doi:10.11743/ogg20210110

Abstract

Abstract:

During the past few years, several shale gas discoveries were made in the Upper Ordovician Wufeng Formation and Lower Silurian Longmaxi Formation in Yichang of western Hubei Province, China.The shale gas potential of the formations was then explored by combining the previous studies with updated analyses of drilling data and outcrops, geophysical information and testing results.A summary of the development characteristics, reservoir distribution and resource potential of the formations shows that the targeted dark, organic-rich rocks at the lower part of the formations have high quartz content (more than 50% on average) and TOC(2.47% on average), and high maturity (R_o of more than 2% in general), low porosity (less than 5% in general), extra-low permeability (0.19×10^-3 μm² on average), and relatively high gas content (2.0 m³/t on average).Quality reservoirs are mostly distributed in the lower part (about 11 m thick) of the black rocks and can be corresponded to the WF2-WF3 Katian graptolite zone and LM2-LM3 Rhuddanian graptolite zone.The reservoirs are thinner than high-quality reservoirs in Jiaoshiba and Changning areas, Sichuan Province.However, judging by their preservation conditions and economy, we propose that the rocks in the slope of eastern Yichang with their shallower burial depth, relatively better preservation conditions as well as a geological reserve of over 1 200×10⁸ m³, are worthy of further exploration.

Key words: exploration potential, shale gas, reservoir characteristics, Wufeng Formation, Longmaxi Formation, Yichang area

CLC Number:

TE122.2

Quansheng Cai, Xiaohong Chen, Guotao Zhang, Baomin Zhang, Jing Han, Lin Chen, Peijun Li, Yangui Li. Characteristics and exploration potential of the Wufeng-Longmaxi shale gas reservoirs of Lower Paleozoic in Yichang area, western Hubei Province, China[J]. Oil & Gas Geology, 2021, 42(1): 107-123.

Figures/Tables 17

Fig.1

Fig.2

Fig.3

Fig.4

Table 1

Fig.5

Table 2

Fig.6

Fig.7

Fig.8

Fig.9

Fig.10

Fig.11

Fig.12

Table 3

Fig.13

Fig.14

References 34

1	Chen X , Ro ng , J Y , Li Y , et al. Facies Patterns and Geography of the Yangtze Region, South China, through the Ordovician and Silurian Transition[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2004, 204 (3): 353- 372.
2	陈旭, 樊隽轩, 张元动, 等. 五峰组及龙马溪组黑色页岩在扬子覆盖区内的划分与圈定[J]. 地层学杂志, 2015, 39 (4): 351- 358.
	Chen Xu , Fan Junxuan , Zhang Yuandong , et al. Subdivision and delineation of the Wufeng and Lungmachi black shales in the Subsurface areas of the Yangtze Platform[J]. Journal of Stratigraphy, 2015, 39 (4): 351- 358.
3	王玉满, 董大忠, 李新景, 等. 四川盆地及其周缘下志留统龙马溪组层序与沉积特征[J]. 天然气工业, 2015, 35 (3): 12- 21. doi: 10.3787/j.issn.1000-0976.2015.03.002
	Wang Yuman , Dong Dazhong , Li Xinjing , et al. Stratigraphic sequence and sedimentary characteristics of Lower Silurian Longmaxi Formation in Sichuan Basin and its peripheral areas[J]. Natural Gas Industry, 2015, 35 (3): 12- 21. doi: 10.3787/j.issn.1000-0976.2015.03.002
4	李艳芳, 邵德勇, 吕海刚, 等. 四川盆地五峰组—龙马溪组海相页岩元素地球化学特征与有机质富集的关系[J]. 石油学报, 2015, 36 (12): 1470- 1483. doi: 10.7623/syxb201512002
	Li Yanfang , Shao Deyong , Lv Haigang , et al. A relationship between elemental geochemical characteristics and organic matter enrichment in marine shale of Wufeng Formation-Longmaxi Formation, Sichuan Basin[J]. Acta Petrolei Sinica, 2015, 36 (12): 1470- 1483. doi: 10.7623/syxb201512002
5	徐政语, 蒋恕, 熊绍云, 等. 扬子陆块下古生界页岩发育特征与沉积模式[J]. 沉积学报, 2015, 33 (1): 21- 35.
	Xu Zhenyu , Jiang Shu , Xiong Shaoyun , et al. Characteristics and depositional model of the Lower Paleozoic organic rich shale in the Yangtze Continental Block[J]. Acta Sedimentologica Sinica, 2015, 33 (1): 21- 35.
6	王超, 张柏桥, 舒志国, 等. 四川盆地涪陵地区五峰组-龙马溪组海相页岩岩相类型及储层特征[J]. 石油与天然气地质, 2018, 39 (3): 485- 497.
	Wang Chao , Zhang Boqiao , Shu Zhiguo , et al. Lithofacies types and reservoir characteristics of marine shales of the Wufeng Formation-Longmaxi Formation in Fuling area, the Sichuan Basin[J]. Oil & Gas Geology, 2018, 39 (3): 485- 497.
7	郭彤楼, 刘若冰. 复杂构造区高演化程度海相页岩气勘探突破的启示——以四川盆地东部盆缘JY1井为例[J]. 天然气地球科学, 2013, 24 (4): 643- 651.
	Guo Tonglou , Liu Ruobing . Implications from marine shale gas exploration breakthrough in complicated structural area at high thermal stage: Taking Longmaxi Formation in Well JY1 as an Example[J]. Natural Gas Geoscience, 2013, 24 (4): 643- 651.
8	郭旭升. 南方海相页岩气"二元富集"规律——四川盆地及周缘龙马溪组页岩气勘探实践认识[J]. 地质学报, 2014, 88 (7): 1209- 1218.
	Guo Xusheng . Rules of two-factor enrichiment for marine shale gas in Southern China——Understanding from the Longmaxi Formation shale gas in Sichuan Basin and its surrounding area[J]. Acta Geologica Sinica, 2014, 88 (7): 1209- 1218.
9	王志刚. 涪陵页岩气勘探开发重大突破与启示[J]. 石油与天然气地质, 2015, 36 (1): 1- 6.
	Wang Zhigang . Breakthrough of Fuling shale gas exploration and development and its inspiration[J]. Oil & Gas Geology, 2015, 36 (1): 1- 6.
10	Nie Haikuan , Li Donghui , Liu Guangxiang , et al. An overview of the geology and production of the Fuling shale gas field, Sichuan Basin, China[J]. Energy Geoscience, 2020, 1 (3-4): 147- 164. doi: 10.1016/j.engeos.2020.06.005
11	翟刚毅, 王玉芳, 包书景, 等. 我国南方海相页岩气富集高产主控因素及前景预测[J]. 地球科学, 2017, 42 (7): 1057- 1068.
	Zhai Gangyi , Wang Yufang , Bao Shujing , et al. Major factors controlling the accumulation and high productivity of marine shale gas and prospect forecast in Southern China[J]. Earth Science, 2017, 42 (7): 1057- 1068.
12	马永生, 蔡勋育, 赵培荣. 中国页岩气勘探开发理论认识与实践[J]. 石油勘探与开发, 2018, 45 (4): 561- 574.
	Ma Yongsheng , Cai Xunyu , Zhao Peirong . China's shale gas exploration and development: understanding and practice[J]. Petroleum Exploration and Development, 2018, 45 (4): 561- 574.
13	陈孝红, 张保民, 陈林, 等. 鄂西宜昌地区晚奥陶世—早志留世页岩气藏的主控地质因素与富集模式[J]. 地球学报, 2018, 39 (3): 257- 268.
	Chen Xiaohong , Zhang Baomin , Chen Lin , et al. Main geological controlling factors and enrichment pattern of shale gas reservoirs in the Late Ordovician-early Silurian strata of Yichang, Western Hubei Province[J]. Acta Geoscientica Sinica, 2018, 39 (3): 257- 268.
14	聂海宽, 张柏桥, 刘光祥, 等. 四川盆地五峰组-龙马溪组页岩气高产地质原因及启示——以涪陵页岩气田JY6-2HF为例[J]. 石油与天然气地质, 2020, 41 (3): 463- 473.
	Nie Haikuan , Zhang Baiqiao , Liu Guangxiang , et al. Geological factors contributing to high shale gas yield in the Wufeng-Longmaxi Fms of Sichuan Basin: A case study of Well JY6-2HF in Fuling shale gas field[J]. Oil & Gas Geology, 2020, 41 (3): 463- 473.
15	李天义, 何生, 何治亮, 等. 中扬子地区当阳复向斜中生代以来的构造抬升和热史重建[J]. 石油学报, 2012, 33 (02): 213- 224.
	Li Tianyi , He Shen , He Zhiliang , et al. Reconstruction of tectonic uplift and thermal history since Mesozoic in the Dangyang synclinorium of the central Yangtze area[J]. Acta Petrolei Sinica, 2012, 33 (2): 213- 224.
16	徐大良, 彭练红, 刘浩, 等. 黄陵背斜中新生代多期次隆升的构造—沉积响应[J]. 华南地质与矿产, 2013, 29 (2): 90- 99.
	Xu Daliang , Peng Lianhong , Liu Hao , et al. Meso-Cenozoic tectono-sedimentary response of multi-phased uplifts of Huangling anticline, Central China[J]. Geology & Mineral Resources of South China, 2013, 29 (2): 90- 99.
17	邓铭哲, 何登发. 当阳地区地质结构及其对宜昌地区志留系页岩气勘探的意义[J]. 成都理工大学学报(自然科学版), 2018, 45 (4): 487- 500. doi: 10.3969/j.issn.1671-9727.2018.04.09
	Deng Mingzhe , He Dengfa . The geological structure in the Dangyang area and its significance to the shale gas exploration in Yichang area, China[J]. Journal of Chengdu University of Technology (Science & Technology Edition), 2018, 45 (4): 487- 500. doi: 10.3969/j.issn.1671-9727.2018.04.09
18	李志明, 全秋琦. 中国南部奥陶—志留纪笔石页岩相类型及其构造古地理[J]. 地球科学—中国地质大学学报, 1992, 17 (3): 261- 269.
	Li Zhiming , Quan d Qiuqi . Lithofacies Types and Tectonic Palaeo-geography of Ordovician and Silurian Graptolite-Bearing Strata in South China[J]. Earth Science-Journal of China University of Geosciences, 1992, 17 (3): 261- 269.
19	王怿, 戎嘉余, 詹仁斌, 等. 鄂西南奥陶系-志留系交界地层研究兼论宜昌上升[J]. 地层学杂志, 2013, 37 (3): 264- 274.
	Wang Yi , Rong Jiayu , Zhan Renbin , et al. On the Ordovician-Silurian boundary strata in Southwestern Hubei, and the Yichang Uplift[J]. Journal of Stratigraphy, 2013, 37 (3): 264- 274.
20	严德天, 王清晨, 陈代钊, 等. 扬子及周缘地区上奥陶统—下志留统烃源岩发育环境及其控制因素[J]. 地质学报, 2008, 82 (3): 321- 327. doi: 10.3321/j.issn:0001-5717.2008.03.005
	Yan Detian , Wang Qingchen , Chen Daizhao , et al. Sedimentary environment and development controls of the hydrocarbon sources beds: the Upper Ordovician Wufeng Formation and the Lower Silurian Longmaxi Formation in the Yangtze Area[J]. Acta Geologica Sinica, 2008, 82 (3): 321- 327. doi: 10.3321/j.issn:0001-5717.2008.03.005
21	刘伟, 许效松, 余谦, 等. 中上扬子晚奥陶世赫南特期岩相古地理[J]. 成都理工大学学报(自然科学版), 2012, 39 (1): 32- 39. doi: 10.3969/j.issn.1671-9727.2012.01.005
	Liu Wei , Xu Xiaosong , Yu Qian , et al. Lithofacies palaeogeography of the Late Ordovician Hirnantian in the Middle-Upper Yangtze region of China[J]. Journal of Chengdu University of Technology, 2012, 39 (1): 32- 39. doi: 10.3969/j.issn.1671-9727.2012.01.005
22	Fan J X , Melchin M J , Chen X , et al. Biostratigraphy and Geography of the Ordovician-Silurian Lungmachi Black Shales in South China[J]. Sci China Earth Sci, 2011, 54, 1854- 1863. doi: 10.1007/s11430-011-4301-3
23	王涛利, 郝爱胜, 陈清, 等. 中扬子宜昌地区五峰组和龙马溪组页岩发育主控因素[J]. 天然气地球科学, 2018, 29 (5): 616- 631.
	Wang Taoli , Hao Aisheng , Chen Qing , et al. The study of main factors controlling the development of Wufeng Formation and Longmaxi Formation organic-rich shales in the Yichang area, middle Yangtze region[J]. Natural Gas Geoscience, 2018, 29 (5): 616- 631.
24	邱小松, 杨波, 胡明毅. 中扬子地区五峰组—龙马溪组页岩气储层及含气性特征[J]. 天然气地球科学, 2013, 24 (6): 1274- 1283.
	Qiu Xiaosong , Yang Bo , Hu Mingyi . Characteristics of shale reservoirs and gas content of Wufeng-Longmaxi Formation in the middle Yangtze Region[J]. Natural Gas Geoscience, 2013, 24 (6): 1274- 1283.
25	王玉满, 王淑芳, 董大忠, 等. 川南下志留统龙马溪组页岩岩相表征[J]. 地学前缘, 2016, 23 (1): 119- 133.
	Wang Yuman , Wang Shufang , Dong Dazhong , et al. Lithofacies Chara-cterization of Longmaxi Formation of the Lower Silurian, Southern Sichuan[J]. Earth Science Frontiers, 2016, 23 (1): 119- 133.
26	Gou Q , Xu S . 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
27	Su W B , He L Q , Wang Y B , et al. K-bentonite beds and high-resolution integrated stratigraphy of the uppermost Ordovician Wufeng and the Lowest Silurian Longmaxi Formations in South China[J]. Science in China (Series D), 2003, 46 (11): 1121- 1133. doi: 10.1360/01yd0225
28	Li Yang , Zhou Dehua , Wang Weihong , et al. Development of unconventional gas and technologies adopted in China[J]. Energy Geoscience, 2020, 1 (1-2): 55- 68. doi: 10.1016/j.engeos.2020.04.004
29	刘安, 包汉勇, 李海, 等. 湖北省上奥陶统五峰组—下志留统龙马溪组页岩气地质条件分析及有利区带预测[J]. 华南地质与矿产, 2016, 32 (2): 126- 134. doi: 10.3969/j.issn.1007-3701.2016.02.004
	Liu An , Bao Hanyong , Li Hai , et al. Analysis of the shale gas geological conditions of the upper Ordovician Wufeng Formation-lower Silurian Longmaxi Formation in Hubei Province and predict the favorable Zone[J]. Geology & Mineral Resources of South China, 2016, 32 (2): 126- 134. doi: 10.3969/j.issn.1007-3701.2016.02.004
30	余川, 聂海宽, 曾春林, 等. 四川盆地东部下古生界页岩储集空间特征及其对含气性的影响[J]. 地质学报, 2014, 88 (7): 1311- 1320.
	Yu Chuan , Nie Haikuan , Zeng Chunlin , et al. Shale reservoir space characteristics and the effect on gas content in Lower Palaeozoic erathem of the Eastern Sichuan Basin[J]. Acta Geologica Sinica, 2014, 88 (7): 1311- 1320.
31	马勇, 钟宁宁, 程礼军, 等. 渝东南两套富有机质页岩的孔隙结构特征——来自FIB-SEM的新启示[J]. 石油实验地质, 2015, 37 (1): 109- 116.
	Ma Yong , Zhong Ningning , Chen Lijun , et al. Pore structure of two organic-rich shales in southeastern Chongqing area: Insight from Focused Ion Beam Scanning Electron Microscope (FIB-SEM)[J]. Petroleum Geology & Experiment, 2015, 37 (1): 109- 116.
32	Zheng Herong , Zhang Jincai , Qi Yuanchang . Geology and geomechanics of hydraulic fracturing in the Marcellus shale gas play and their potential applications to the Fuling shale gas development[J]. Energy Geoscience, 2020, 1 (1-2): 36- 46. doi: 10.1016/j.engeos.2020.05.002
33	涂乙, 邹海燕, 孟海平, 等. 页岩气评价标准与储层分类[J]. 石油与天然气地质, 2014, 35 (1): 153- 158.
	Tu Yi , Zou Haiyan , Meng Haiping , et al. Evaluation criteria and classification of shale gas reservoirs[J]. Oil & Gas Geology, 2014, 35 (1): 153- 158.
34	张晓明, 石万忠, 徐清海, 等. 四川盆地焦石坝地区页岩气储层特征及控制因素[J]. 石油学报, 2015, 36 (8): 926- 939+953.
	Zhang Xiaoming , Shi Wanzhong , Xu Qinghai , et al. Reservoir characteristics and controlling factors of shale gas in Jiaoshiba Area, Sichuan Basin[J]. Acta Petrolei Sinica, 2015, 36 (8): 926- 939+953.

地层			矿物含量/%
地层			石英	长石	碳酸盐矿物	粘土矿物
统	组	阶	最小~最大	最小~最大	最小~最大	最小~最大
统	组	阶	平均	平均	平均	平均
下志留统	龙马溪组	埃隆阶	18.26~68.83	3.14~18.13	0~16.19	7.54~75.13
		埃隆阶	40.41	7.62	3.23	45.84
		鲁丹阶	44.45~93.78	1.74~15.6	0~5.46	0~46.28
		鲁丹阶	72.26	8.43	1.43	18.31
上奥陶统	五峰组	赫南特阶	42.5~86.01	4.17~11.85	0~8.13	9.82~32.67
		赫南特阶	68.43	7.79	2.25	20.45
		凯迪阶	34.56~100	0~11.62	0~4.28	0~53.12
		凯迪阶	73.54	5.74	1.56	19.46

剖面位置	层位	样品个数	地层TOC/%
剖面位置	层位	样品个数	分布范围	平均值
鄂宜页2井	五峰组-龙马溪组	30	0.32~5.53	2.41
鄂宜页3井	五峰组-龙马溪组	16	0.36~5.13	2.15
荷花横石	龙马溪组	18	0.93~6.38	2.90

储层品质	TOC/%	脆性指数/%	含气性/(m³·t^-1)	沉积环境
Ⅰ类(优质储层)	>2.5	>50	>2	深水硅质陆棚
Ⅱ类(次优储层)	1.5~2.5	40~50	1~2	深水泥质陆棚
Ⅲ类(差储层)	0.5~1.5	30~40	0.5~1	深/浅水泥质陆棚
Ⅳ类(非储层)	< 0.5	< 30	< 0.5	浅水泥质陆棚

[1]	Caineng ZOU, Dazhong DONG, Wei XIONG, Guoyou FU, Qun ZHAO, Wen LIU, Weiliang KONG, Qin ZHANG, Guangyin CAI, Yuman WANG, Feng LIANG, Hanlin LIU, Zhen QIU. Advances， challenges， and countermeasures in shale gas exploration of underexplored plays， sequences and new types in China [J]. Oil & Gas Geology, 2024, 45(2): 309-326.
[2]	Xiao HE, Maja ZHENG, Yong LIU, Qun ZHAO, Xuewen Shi, Zhenxue Jiang, Wei WU, Ya WU, Shitan NING, Xianglu TANG, Dadong LIU. Characteristics and differential origin of Qiongzhusi Formation shale reservoirs under the “aulacogen-uplift” tectonic setting， Sichuan Basin [J]. Oil & Gas Geology, 2024, 45(2): 420-439.
[3]	Rui LI, Jiao YANG, Yukun CHAI, Hua WANG, Jianwen DAI, Yonghui DENG, Shuang SUN, Xiaolin MA, Tengfei TIAN. A novel sedimentary pattern of wave-induced sandbars under high-angle wave incidence [J]. Oil & Gas Geology, 2024, 45(2): 530-541.
[4]	Yi ZHANG, Bin ZHANG, Banghua LIU, Jie LIU, Qiansheng WEI, Qi ZHANG, Hongjun LU, Pengyu ZHU, Rui WANG. Status quo and development trends of research on shale gas adsorption and seepage in shale gas reservoirs [J]. Oil & Gas Geology, 2024, 45(1): 256-280.
[5]	Guangfu WANG, Fengxia LI, Haibo WANG, Tong ZHOU, Yaxiong ZHANG, Ruyue WANG, Ning LI, Yuxin CHEN, Xiaofei XIONG. Difficulties and countermeasures for fracturing of various shale gas reservoirs in the Sichuan Basin [J]. Oil & Gas Geology, 2023, 44(6): 1378-1392.
[6]	Dongfeng HU, Zhihong WEI, Ruobing LIU, Xiangfeng WEI, Wei WANG, Qingbo WANG. Discovery of the Qijiang shale gas field in a structurally complex region on the southeastern margin of the Sichuan Basin and its implications [J]. Oil & Gas Geology, 2023, 44(6): 1418-1429.
[7]	Hongyan WANG, Shangwen ZHOU, Qun ZHAO, Zhensheng SHI, Dexun LIU, Pengfei JIAO. Enrichment characteristics， exploration and exploitation progress， and prospects of deep shale gas in the southern Sichuan Basin， China [J]. Oil & Gas Geology, 2023, 44(6): 1430-1441.
[8]	Zhensheng SHI, Shengxian ZHAO, Tianqi ZHOU, Shasha SUN, Yuan YUAN, Chenglin ZHANG, Bo LI, Ling QI. Types and genesis of horizontal bedding of marine gas-bearing shale and its significance for shale gas： A case study of the Wufeng-Longmaxi shale in southern Sichuan Basin， China [J]. Oil & Gas Geology, 2023, 44(6): 1499-1514.
[9]	Ruikang BIAN, Chuanxiang SUN, Haikuan NIE, Zhujiang LIU, Wei DU, Pei LI, Ruyue WANG. Types， characteristics， and exploration targets of deep shale gas reservoirs in the Wufeng-Longmaxi formations， southeastern Sichuan Basin [J]. Oil & Gas Geology, 2023, 44(6): 1515-1529.
[10]	Jiageng LIU, Yanzhong WANG, Yingchang CAO, Shuping WANG, Xuezhe LI, Zhukun WANG. Factors controlling the development of deep and ultra-deep coarse-grained siliciclastic reservoirs with high quality in the steep slope zone of the Minfeng sub-sag， Dongying Sag， Bohai Bay Basin [J]. Oil & Gas Geology, 2023, 44(5): 1203-1217.
[11]	Xuanlong SHAN, Wei WANG, Xintao ZHANG, Jian YI, Chunqiang XU, Junpei YUE, Pengcheng LIU, Mao FU. Geological model and construction process of the Mesozoic volcanic edifices in Bozhong Sag， Bohai Sea [J]. Oil & Gas Geology, 2023, 44(3): 675-688.
[12]	Dongjun FENG. Sweet spot assessment and its significance for the marine-continental transitional shale gas of Permian Longtan Fm. in southeastern Sichuan Basin [J]. Oil & Gas Geology, 2023, 44(3): 778-788.
[13]	Yan Zhang, Dong Hui, Jian Zhang, Deliang Zhang, Rui Jiang. Characteristics and main controlling factors of water vapor adsorption in marine shale： A case study of the Lower Silurian Longmaxi shales in southern Sichuan Basin [J]. Oil & Gas Geology, 2022, 43(6): 1431-1444.
[14]	Jianghui Meng, Peixi Lyu, Wei Wu, Renfang Pan, Yiqing Zhu. A method for evaluating the thermal maturity of marine shale based on graptolite reflectance and Raman spectroscopy： A case from the Lower Palaeozoic Wufeng‒Longmaxi Formations， southern Sichuan Basin， SW China [J]. Oil & Gas Geology, 2022, 43(6): 1515-1528.
[15]	Zongquan Hu, Wei Du, Tong Zhu, Zengqin Liu. Sequence stratigraphy and lithofacies characteristics of fine-grained deposits of Wufeng-Longmaxi Formations in the Sichuan Basin and on its periphery [J]. Oil & Gas Geology, 2022, 43(5): 1024-1038.

Characteristics and exploration potential of the Wufeng-Longmaxi shale gas reservoirs of Lower Paleozoic in Yichang area, western Hubei Province, China

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 17

References 34

Related Articles 15

Recommended Articles

Metrics