中上扬子地区下寒武统页岩气储层特征及勘探方向

doi:10.11743/ogg20200205

Abstract

Abstract:

The study aims to clarify the reservoir pore characteristics and the factors influencing the ancient shale sequences in Southern China with the samples taken from the Lower Cambrian shale in the Middle-Upper Yangtze area.An integration of multiple technical methods, including the thin section observation, joint tests of high pressure mercury injection and nitrogen adsorption, argon ion milling-scanning electron microscopy, focused ion beam scanning electron microscopy (FIB-SEM), whole-rock X-ray diffraction analysis is applied to systematically study the structure, types and influential factors of shale pores.Meanwhile, the potential targets for exploration of the Lower Cambrian shale gas are also pointed out based on the characteristics of the shale reservoir and the geological conditions for shale gas generation.It is concluded that the Lower Cambrian in the study area mainly develops three types of organic-rich shale in terms of depositional genesis, namely the extensional-trough, shelf-margin slope, and platform-front slope.The organic-rich shale of the intra-shelf extensional-trough type is dominated by intergranular pores and interlayer pores of clay mineral, followed by organic pores; that of the platform-front slope type mainly develops organic pores and calcite intragranular dissolution pores; while that of the shelf-margin slope type mainly develops organic pores with almost no inorganic mineral pores.As a whole, the pore development in the Lower Cambrian shale is controlled by a variety of factors including the mineral composition of shale, the abundance of organic matter, thermal evolution degree, and preservation conditions.Given the analysis of shale gas preservation conditions and drilling results of exploration wells, it is suggested that we should pay more attention to the distribution of intra-shelf extensional-trough shale in the Lower Cambrian shale gas exploration within the Sichuan Basin, and this is especially true for the organic-rich shale intervals in the upper part of the Qiongzhusi Formation.While as for the outer area of the Sichuan Basin, the organic-rich shale of both the platform-front and the shelf-margin slope types, featuring moderate thermal evolution and relatively good preservation conditions, should be the research focus.

Key words: organic pore, pore type, preservation condition, shale reservoir, Lower Cambrian, Middle-Upper Yangtze area

CLC Number:

TE122.2

Bo Gao, Zhongbao Liu, Zhiguo Shu, Haotian Liu, Ruyue Wang, Zhiguang Jin, Guanping Wang. 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.

Figures/Tables 12

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References 26

1	邹才能, 朱如凯, 白斌, 等. 中国油气储层中纳米孔首次发现极其科学价值[J]. 岩石学报, 2011, 27 (6): 1857- 1864.
	Zou Caineng , Zhu Rukai , Bai Bin , et al. First discovery of nanopore throat in oil and gas reservoir in China and its scientific value[J]. Acta Petrologica Sinica, 2011, 27 (6): 1857- 1864.
2	陈文玲, 周文, 罗平, 等. 四川盆地长芯1井下志留统龙马溪组页岩气储层特征研究[J]. 岩石学报, 2013, 29 (3): 1073- 1086.
	Chen Wenling , Zhou Wen , Luo Ping , et al. Analysis of the shale gas reservoir in the Lower Silurian Longmaxi Formation, Changxin 1 well, Southeast Sichuan Basin, China[J]. Acta Petrologica Sinica, 2013, 29 (3): 1073- 1086.
3	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.
4	于炳松. 页岩气储层孔隙分类与表征[J]. 地学前缘, 2013, 20 (4): 211- 220.
	Yu Bingsong . Classification and characterization of gas shale pore system[J]. Earth Science Frontiers, 2013, 20 (4): 211- 220.
5	郑和荣, 高波, 彭勇民, 等. 中上扬子地区下志留统沉积演化与页岩气勘探方向[J]. 古地理学报, 2013, 15 (5): 645- 656.
	Zheng Herong , Gao Bo , Peng Yongmin , et al. Sedimentary evolution and shale gas exploration direction of the Lower Silurian in Middle-Upper Yangtze area[J]. Journal of Palaeogeography, 2013, 15 (5): 645- 656.
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	肖佃师, 赵仁文, 杨潇, 等. 海相页岩气储层孔隙表征、分类及贡献[J]. 石油与天然气地质, 2019, 40 (6): 1215- 1225.
	Xiao Dianshi , Zhao Renwen , Yang Xiao , et al. Characterization, classification and contribution of marine shale gas reservoirs[J]. Oil & Gas Geology, 2019, 40 (6): 1215- 1225.
8	张文伟. 细粒沉积岩储层微观特征研究方法及应用——以大民屯凹陷安福屯地区S352井为例[J]. 石油地质与工程, 2019, 33 (4): 11- 15.
	Zhang Wenwei . Microcosmic characteristics of fine-grained sedimentary reservoirs and its application-By taking S352 well in Anfutun area of Damintun sag as an example[J]. Petroleum Geology and Engineering, 2019, 33 (4): 11- 15.
9	肖佃师, 卢双舫, 房大志, 等. 海相高成熟页岩气储层孔隙连通关系——以彭水地区龙马溪组为例[J]. 油气藏评价与开发, 2019, 9 (5): 45- 53.
	Xiao Dianshi , Lu Shuangfang , Fang Dazhi , et al. Pore connectivity of marine high-maturity shale gas reservoirs:A case study in Longmaxi Formation, Pengshui area[J]. Reservoir Evaluation and Development, 2019, 9 (5): 45- 53.
10	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 the Wufeng Formation and Longmaxi Formation in Southeast Sichuan Basin[J]. Oil & Gas Geology, 2015, 36 (6): 1001- 1008.
11	肖贤明, 王茂林, 魏强, 等. 中国南方下古生界页岩气远景区评价[J]. 天然气地球科学, 2015, 26 (8): 1433- 1445.
	Xiao Xianming , Wang Maolin , Wei Qiang , et al. Evaluation of Lower Paleozoic shale with shale gas prospect in South China[J]. Natural Gas Geoscience, 2015, 26 (8): 1433- 1445.
12	罗超.上扬子地区下寒武统牛蹄塘组页岩特征研究[D].成都:成都理工大学, 2014.
	Luo Chao.Geological characteristics of gas shale in the Lower Cambrian Niutitang Formation of Upper Yangtze Platform[D].Chengdu: Chengdu University of Technology, 2014.
13	刘忠宝, 高波, 张钰莹, 等. 上扬子地区下寒武统页岩沉积相类型及分布特征[J]. 石油勘探与开发, 2017, 44 (1): 21- 31.
	Liu Zhongbao , Gao Bo , Zhang Yuying , et al. Types and distribution of the shale sedimentary facies of the Lower Cambrian in Upper Yangtze area, South China[J]. Petroleum Exploration and Development, 2017, 44 (1): 21- 31.
14	刘忠宝, 杜伟, 高波, 等. 层序格架中富有机质页岩发育模式及差异分布:以上扬子下寒武统为例[J]. 吉林大学学报(地球科学版), 2018, 48 (1): 1- 14.
	Liu Zhongbao , Du Wei , Gao Bo , et al. Sedimentary model and distribution of organic-rich shale in the sequence stratigraphic framework:A case study of the Lower Cambrian in the Upper Yangtze region[J]. Journal of Jilin University(Earth Science Edition), 2018, 48 (1): 1- 14.
15	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.
	Liu Zhongbao , Gao Bo , Hu Zongquan , et al. Reservoir characteristics and pores formation and evolution of highmaturated organic rich shale:A case study of the Lower Cambrian Jiumenchong Formation, southern of Guizhou area[J]. Acta Petrolei Sinica, 2017, 38 (12): 1381- 1389.
16	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 productive of shale gas in the Wufeng-Longmaxi Formation, southeastern Sichuan Basin[J]. Earth Science Frontier, 2016, 23 (1): 1- 10.
17	Milliken K L , Rudnicki M , David N , et al. Organic matter-hosted pore system, Marcellus Formation(Devonian), Pennsylvania[J]. AAPG Bulletin, 2013, 97 (2): 177- 200. doi: 10.1306/07231212048
18	王濡岳, 龚大建, 冷济高, 等. 黔北地区下寒武统牛蹄塘组页岩储层发育特征:以岑巩区块为例[J]. 地学前缘, 2017, 24 (6): 286- 299.
	Wang Ruyue , Gong Dajian , Leng Jigao , et al. Developmental characteristics of the Lower Cambrian Niutitang shale reservoir innorthern Guizhou area:A case study in the Cengong block[J]. Earth Science Frontiers, 2017, 24 (6): 286- 299.
19	王飞宇, 关晶, 冯伟平, 等. 过成熟海相页岩孔隙度演化特征和游离气量[J]. 石油勘探与开发, 2013, 40 (6): 764- 768.
	Wang Feiyu , Guan Jing , Feng Weiping , et al. Evolution of overmature marine shale porosity and implication to the free gas volume[J]. PetroleumExploration and Development, 2013, 40 (6): 764- 768.
20	赵文智, 李建忠, 杨涛, 等. 中国南方海相页岩气成藏差异性比较与意义[J]. 石油勘探与开发, 2016, 43 (4): 499- 510.
	Zhao Wenzhi , Li Jianzhong , Yang Tao , et al. Geological difference and its significance of marine shale gases in South China[J]. PetroleumExploration and Development, 2016, 43 (4): 499- 510.
21	张鹏, 黄宇琪, 杨军伟, 等. 黔西北龙潭组页岩吸附能力主控因素分析[J]. 断块油气田, 2019, 26 (2): 162- 167.
	Zhang Peng , Huang Yuqi , Yang Junwei , et al. Main controlling factors of shale adsorption capacity of Longtan Formation in Northwest Guizhou[J]. Fault-Block Oil and Gas Field, 2019, 26 (2): 162- 167.
22	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, 63.
	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, 63.
23	聂海宽, 包书景, 高波, 等. 四川盆地及其周缘下古生界页岩气保存条件研究[J]. 地学前缘, 2012, 19 (3): 280- 294.
	Nie Haikuan , Bao Shujing , Gao Bo , et al. A Study of shale gas preservation condition for the Lower Paleozoic in Sichuan Basin and its periphery[J]. Earth Science Frontiers, 2012, 19 (3): 280- 294.
24	王濡岳, 丁文龙, 龚大建, 等. 黔北地区海相页岩气保存条件——以贵州岑巩区块下寒武统牛蹄塘组为例[J]. 石油与天然气地质, 2016, 37 (1): 45- 55.
	Wang Ruyue , Ding Wenlong , Gong Dajian , et al. Gas preservation conditions of marine shale in northern Guizhou area:A case study of the Lower Cambrian Niutitang Formation in the Cen'gong block, Guizhou Province[J]. Oil & Gas Geology, 2016, 37 (1): 45- 55.
25	罗胜元, 刘安, 李海, 等. 中扬子宜昌地区寒武系水井沱组页岩含气性及影响因素[J]. 石油实验地质, 2019, 41 (1): 56- 67.
	Luo Shengyuan , Liu An , Li Hai , et al. Gas-bearing characteristics and controls of the Cambrian Shuijingtuo Formation in Yichang area, Middle Yangtze region[J]. Petroleum Geology & Experiment, 2019, 41 (1): 56- 67.
26	赵文韬, 荆铁亚, 姚光华, 等. 复杂构造区页岩气保存条件研究[J]. 特种油气藏, 2018, 25 (06): 83- 89.
	Zhao Wentao , Jing Tieya , Yao Guanghua , et al. Shale gas preservation condition in complex tectonic zone[J]. Special Oil & and Gas Reservoirs, 2018, 25 (6): 83- 89.

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Reservoir characteristics and exploration of the Lower Cambrian shale gas in the Middle-Upper Yangtze area

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