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

doi:10.11743/ogg20210112

摘要/Abstract

摘要：

为查明川东北自流井组陆相富有机质页岩储层孔隙发育特点及形成机理，采用岩石薄片、全岩X-衍射、有机岩石学、高压压汞-吸附联合测定、氩离子抛光-扫描电镜及物性测试等多种技术方法，开展了川东北地区自流井组陆相页岩储层孔隙结构、类型及储集性能研究，并探讨了主要孔隙类型的形成控制因素。研究结果表明：川东涪陵地区东岳庙段和川北元坝地区大安寨段页岩平均孔隙度均大于4%，储集性能较好，页岩孔隙类型主要以无机矿物质孔为主，其次为有机质孔，局部发育微裂缝，无机矿物质孔对孔隙度的贡献最大。页岩粘土矿物含量及压实作用的强弱控制了无机矿物质孔的发育程度，有机质组分类型是控制有机质孔发育与否的关键因素，表现为固体沥青内普遍发育有机质孔，而大多数镜质体内基本不发育有机质孔。川东涪陵地区东岳庙段与大安寨段、川北元坝地区大安寨段无机矿物质孔与有机质孔均有发育，而川北元坝地区东岳庙段仅发育无机矿物质孔，有机质孔基本不发育。

关键词: 无机矿物质孔, 有机质孔, 孔隙类型, 陆相页岩气, 页岩储层, 自流井组, 侏罗系, 四川盆地

Abstract:

The development characteristics and mechanisms of pores in the organic-rich continental shale in the Ziliujing Formation of the Yuanba and Fuling areas, northeastern Sichuan Basin, were studied based on an integration of thin-section observation, whole-rock x-ray diffraction and organic matter petrological analyses with measurements obtained jointly through high-pressure mercury intrusion and adsorption experiments, and argon ion polishing-scanning electron microscopy and physical property tests.As a result, the structure, type and storage capacity of the pores as well as the factors controlling the pore growth were revealed.It shows that both the Dongyuemiao Member shale in the Fuling area of eastern Sichuan Basin and Da'anzhai Member shale in the Yuanba area of northern Sichuan Basin have high reservoir capacity with an average porosity higher than 4%.Pores in the shales are mostly inorganic mineral pores, followed by organic-matter pores and some local micro-cracks.The inorganic mineral pores show signs of strong influence of clay mineral and compaction intensity.And the organic-matter pores were probably conditioned by the composition type of organic matter as they are found to be abundant in solid asphalt, but rare in most vitrinites.The Dongyuemiao and Da'anzhai Members of the Fuling area in eastern Sichuan Basin and the Da'anzhai Member of the Yuanba area in northern Sichuan Basin contain both types of pores, while the Dongyuemiao Member of the Yuanba area is rich in inorganic mineral pores only.

Key words: inorganic mineral pore, organic-matter pore, pore type, continental shale gas, shale reservoir, Ziliujing Formation, the Jurassic, Sichuan Basin

中图分类号:

TE122.2

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. doi: 10.11743/ogg20210112 Zhongbao Liu,Zongquan Hu,Guangxiang Liu,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. doi: 10.11743/ogg20210112

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参考文献 23

1	邹才能, 杨智, 王红岩, 等. 进源找油: 论四川盆地非常规陆相大型页岩油气田[J]. 地质学报, 2019, 93 (7): 1551- 1562. doi: 10.3969/j.issn.0001-5717.2019.07.001
	Zou Caineng , Yang Zhi , Wang Hongyan , et al. Exploring petroleum inside source kitchen": Jurassic unconventional continental giant shale oil & gas field in Sichuan basin, China[J]. Acta Geologica Sinica, 2019, 93 (7): 1551- 1562. doi: 10.3969/j.issn.0001-5717.2019.07.001
2	郭旭升, 胡东风, 李宇平, 等. 海相和湖相页岩气富集机理分析与思考: 以四川盆地龙马溪组和自流井组大安寨段为例[J]. 地学前缘, 2016, 23 (2): 18- 28.
	Guo Xusheng , Hu Dongfeng , Li Yuping , et al. Analyses and thoughts on accumulation mechanisms of marine and lacustrine shale gas: A case study in shales of Longmaxi Formation and Daanzhai Section of Ziliujing Formation in Sichuan Basin[J]. Earth Science Frontiers, 2016, 23 (2): 18- 28.
3	聂海宽, 何治亮, 刘光祥, 等. 中国页岩气勘探开发现状与优选方向[J]. 中国矿业大学学报, 2020, 49 (1): 13- 35.
	Nie Haikuan , He Zhiliang , Liu Guangxiang , et al. Status and direction of shale gas exploration and development in China[J]. Journal of China University of Mining & Technology, 2020, 49 (1): 13- 35.
4	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.
5	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.
6	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 reservoir property[J]. Oil & Gas Geology, 2019, 40 (1): 41- 49.
7	蔡振家, 雷裕红, 罗晓容, 等. 鄂尔多斯盆地东南部延长组7段页岩有机孔发育特征及其影响因素[J]. 石油与天然气地质, 2020, 41 (2): 367- 379.
	Cai Zhenjia , Lei Yuhong , Luo Xiaorong , et al. Characteristics and controlling factors of organic pores in the 7th member of Yanchang Formation shale in the Southeastern Ordos Basin[J]. Oil & Gas Geology, 2020, 41 (2): 367- 379.
8	霍建峰, 高健, 郭小文, 等. 川东地区龙马溪组页岩不同岩相孔隙结构特征及其主控因素[J]. 石油与天然气地质, 2020, 41 (6): 1162- 1175.
	Huo Jianfeng , Gao Jian , Guo Xiaowen , et al. Characteristics and controlling factors of pore structures of various lithofacies in shales of Longmaxi Formation, eastern Sichuan Basin[J]. Oil & Gas Geology, 2020, 41 (6): 1162- 1175.
9	于炳松. 页岩气储层的特殊性及其评价思路和内容[J]. 地学前缘, 2012, 19 (3): 252- 258.
	Yu Bingsong . Particularity of shale gas reservoir and its evaluation[J]. Earth Science Frontiers, 2012, 19 (3): 252- 258.
10	刘忠宝, 高波, 胡宗全, 等. 高演化富有机质页岩储层特征及孔隙形成演化--以黔南地区下寒武统九门冲组为例[J]. 石油学报, 2017, 38 (12): 1381- 1389. doi: 10.7623/syxb201712005
	Liu Zhongbao , Gao Bo , Hu Zongquan , et al. Reservoir characteristics and pores formation and evolution of high aturated organic rich shale: a case study ofin the lower Lower Cambrian Jiumenchong Formation, southern of Guizhou area[J]. Acta Petrolei Sinica, 2017, 38 (12): 1381- 1389. doi: 10.7623/syxb201712005
11	刘忠宝, 高波, 武清钊, 等. 页岩有机-无机复合型孔隙及其控气作用-以川西南地区筇竹寺组为例[J]. 海相油气地质, 2018, 23 (4): 42- 50. doi: 10.3969/j.issn.1672-9854.2018.04.005
	Liu Zhongbao , Gao Bo , Wu Qingzhao , et al. Organic-inorganic compound pore system and its gas-controlling significance: a case study of the Cambrian Qiongzhusi Formation in southwestern Sichuan Basin[J]. Marine Origin Petroleum Geology, 2018, 23 (4): 42- 50. doi: 10.3969/j.issn.1672-9854.2018.04.005
12	胡宗全, 杜伟, 彭勇民, 等. 页岩微观孔隙特征及源-储关系-以川东南地区五峰组-龙马溪组为例[J]. 石油与天然气地质, 2015, 36 (6): 1001- 1008.
	Hu Zongquan , Du Wei , Peng Yongmin , et al. Microscopic pore characteristics and the source-reservoir relationship of shale-An example from theWufeng Formation and Longmaxi Formation in Southeast Sichuan Basin[J]. Oil & Gas Geology, 2015, 36 (6): 1001- 1008.
13	He Z L , Nie H K , Zhao J H , et al. Types and origin of nanoscale pores and fractures in Wufeng and Longmaxi Shale in Sichuan Basin and its periphery[J]. Journal of Nanoscience & Nanotechnology, 2017, 17, 6626- 6633.
14	Nie H K , He Z L , Jin Z J . Source rock and cap rock controls on the upper Ordovician Wufeng Formation-Lower Silurian Longmaxi Formation shale gas accumulation in the Sichuan Basin and its peripheral areas[J]. Acta Geologica Sinica(English Edition), 2016, 90, 1059- 1060. doi: 10.1111/1755-6724.12752
15	杨智, 邹才能. "进源找油": 源岩油气内涵与前景[J]. 石油勘探与开发, 2019, 46 (1): 173- 184.
	Yang Zhi , Zou Caineng . "Exploring petroleum inside source kitchen": Connotation and prospects of source rock oil and gas[J]. Petroleum Exploration and Development, 2019, 46 (1): 173- 184.
16	王香增, 刘国恒, 黄志龙, 等. 鄂尔多斯盆地东南部延长组长7段泥页岩储层特征[J]. 天然气地球科学, 2015, 26 (7): 1385- 1394.
	Wang Xiangzeng , Liu Guoheng , Huang Zhilong , et al. The characteristics of shale reservoir of the No. 7 members in Yanchang Formation og southeast Ordos Basin[J]. Natural Gas Geoscience, 2015, 26 (7): 1385- 1394.
17	魏祥峰, 黄静, 李宇平, 等. 元坝地区大安寨段陆相页岩气富集高产主控因素[J]. 中国地质, 2014, 41 (3): 970- 981.
	Wei Xiangfeng , Huang Jing , Li Yuping , et al. The main factors controlling the enrichment and high production of Daanzhai member continental shale gas in Yuanba area[J]. Geology in China, 2014, 41 (3): 970- 981.
18	高健, 林良彪, 任天龙, 等. 川北地区下侏罗统东岳庙段页岩气富集主控因素研究[J]. 岩性油气藏, 2016, 28 (5): 67- 75.
	Gao Jian , Lin Liangbiao , Ren Tianlong , et al. Controlling factors for shale gas enrichment of the Lower Jurassic Dongyuemiao member in the northern Sichuan Basin[J]. Lithologic reservoirs, 2016, 28 (5): 67- 75.
19	李贤庆, 王元, 郭曼, 等. 川南地区下古生界页岩气储层孔隙特征研究[J]. 天然气地球科学, 2015, 26 (8): 1464- 1471.
	Li Xianqing , Wang Yuan , Guo Man , et al. Pore characteristics of shale gas reservoirs from the Lower Paleozoic in the south of Sichuan Basin[J]. Natural Gas Geoscience, 2015, 26 (8): 1464- 1471.
20	张慧, 焦淑静, 庞起发, 等. 中国南方早古生代页岩有机质的扫描电镜研究[J]. 石油与天然气地质, 2015, 36 (4): 675- 680.
	Zhang Hui , Jiang Shujing , Pang Qifa , et al. SEM observation of organic matter in the Eopaleozoic shale in South China[J]. Oil & Gas Geology, 2015, 36 (4): 675- 680.
21	焦淑静, 张慧, 薛东川, 等. 泥页岩有机显微组分的扫描电镜形貌特征及识别方法[J]. 电子显微学报, 2018, 37 (2): 137- 144.
	Jiao Shujing , Zhang Hui , Xue Dongchuan , et al. Morphological structure and identify method of organic macerals of shale with SEM[J]. Journal of Chinese Electron Microscopy Society, 2018, 37 (2): 137- 144.
22	唐跃刚, 姜鹏, 侯慧敏, 等. 沥青质体和矿物沥青基质与沉积有机基质关系[J]. 中国矿业大学学报, 1999, (28)1: 33-36.
	Tang Yuegang, Jiang Peng, Hou Huimin, et al. Correlation of Bituminite and Mineral-Bituminous Groundmass with Sedimentary Organic Groundmass[J]. Journal of China University of Mining & Technology, 1999, (28)1: 33-36.
23	刘忠宝, 刘光祥, 胡宗全, 等. 陆相页岩层系岩相类型、组合特征及其油气勘探意义--以四川盆地中下侏罗统为例[J]. 天然气工业, 2019, 39 (12): 10- 21.
	Liu Zhongbao , Liu Guangxiang , Hu Zongquan , et al. Lithofacies types and assemblage features of continental shale strata and their significance for shale gas exploration: A case study of the Middle and Lower Jurassic strata in the Sichuan Basin[J]. Natural Gas Industry, 2019, 39 (12): 10- 21.

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