压实对页岩有机质孔隙发育控制作用——以四川盆地东南地区及周缘下古生界为例

doi:10.11743/ogg20210107

摘要/Abstract

摘要：

有机质孔隙是页岩储层中的重要储集空间，目前相关研究主要集中在孔隙的成因与描述上，而对地质条件下有机质孔隙所经历的次生压实改造关注较少。基于扫描电镜、孔隙定量统计和气体吸附技术，对川东南地区及周缘下古生界黑色页岩有机质孔隙的压实改造特点开展了研究。结果显示，有机质孔隙的变形与定向性排列为常见现象，其特征与有机质的赋存状态有关。顺层有机质中孔隙被压实破坏的现象最为普遍，充填有机质中的孔隙则局部被挤压发生形变，矿物集合体有机质孔隙的形变则主要与粘土矿物有关。除有机质赋存状态外，有机质孔隙被压实破坏的影响作用还受控于微观矿物格架的保护、由有机质含量所决定的岩石塑性以及有机质孔隙本身的大小。

关键词: 赋存状态, 挤压形变, 矿物格架, 压实作用, 有机质孔隙, 页岩, 下古生界, 川东南地区

Abstract:

Pores in organic matter are important storage space for gas or oil in shale. Present researches are focused more on the genesis and description of the pores and less on the secondary compaction that also plays a role in the modification of the pores under diverse geological conditions. This paper studies the modification of the pores under compaction with samples from the Lower Paleozoic black shale of southeastern Sichuan Basin and its periphery being observed with scanning electron microscopy (SEM) and analyzed with quantitative pore statistics and gas adsorption techniques. The results show that the deformation and orientation arrangement of pores commonly seen in the organic matter samples can be related to the actual occurrence of the organic matter: the pores are generally destroyed under compaction when in organic matter along beddings, or squeezed to deform locally when in organic matter serving as fillings in shale or just deformed by clay minerals when in organic matter-mineral aggregates. In addition to the occurrence, the pores are also affected by microscopic mineral framework, rock plasticity determined by organic matter content, and their own size.

Key words: occurrence, compaction and deformation, mineral framework, compaction, organic pore, shale, the Lower Paleozoic, southeastern Sichuan Basin

中图分类号:

TE122.2

陈前,闫相宾,刘超英,等. 压实对页岩有机质孔隙发育控制作用——以四川盆地东南地区及周缘下古生界为例[J]. 石油与天然气地质, 2021, 42(1): 76-85. doi: 10.11743/ogg20210107 Qian Chen,Xiangbin Yan,Chaoying Liu,et al. Controlling effect of compaction upon organic matter pore development in shale: A case study on the Lower Paleozoic in southeastern Sichuan Basin and its periphery[J]. Oil & Gas Geology, 2021, 42(1): 76-85. doi: 10.11743/ogg20210107

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参考文献 38

1	何治亮, 聂海宽, 胡东风, 等. 深层页岩气有效开发中的地质问题——以四川盆地及其周缘五峰组-龙马溪组为例[J]. 石油学报, 2020, 41 (4): 379- 391.
	He Zhiliang , Nie Haikuan , Hu Dongfeng , et al. Geological problems in the effective development of deep shale gas: A case study of Upper Ordovician Wufeng-Lower Silurian Longmaxi formations in Sichuan Basin and its periphery[J]. Acta Petrolei Sinica, 2020, 41 (4): 379- 391.
2	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.
3	Curtis M E , Sondergeld C H , Ambrose R J , et al. Microstructural investigation of gas shales in two and three dimensions using nanometer-scale resolution imaging[J]. AAPG Bulletin, 2012b, 96 (4): 665- 677. doi: 10.1306/08151110188
4	Pommer M , Milliken K . Pore types and pore-size distributions across thermal maturity, Eagle Ford Formation, southern Texas[J]. AAPG Bulletin, 2015, 99 (9): 1713- 1744. doi: 10.1306/03051514151
5	Schieber J . Common themes in the formation and preservation of intrinsic porosity in shales and mudstones-Illustrated with examples across the Phanerozoic[M]. City. 2010.
6	Curtis M E , Cardott B J , Sondergeld C H , et al. Development of organic porosity in the Woodford Shale with increasing thermal maturity[J]. International Journal of Coal Geology, 2012a, 103 (23): 26- 31.
7	Bernard S , Wirth R , Schreiber A , et al. Formation of nanoporous pyrobitumen residues during maturation of the Barnett Shale (Fort Worth Basin)[J]. International Journal of Coal Geology, 2012, 103 (23): 3- 11.
8	Nie Haikuan , Jin Zhijun , Zhang Jinchuan . Characteristics of three organic matter pore types in the Wufeng-Longmaxi Shale of the Sichuan Basin, Southwest China[J]. Scientific Reports, 2018, 8 (1): 7014. doi: 10.1038/s41598-018-25104-5
9	Wang P , Chen Z , Jin Z , et al. Shale oil and gas resources in organic pores of the Devonian Duvernay Shale, Western Canada Sedimentary Basin based on petroleum system modeling[J]. Journal of Natural Gas Science and Engineering, 2018, 50, 33- 42. doi: 10.1016/j.jngse.2017.10.027
10	罗小平, 吴飘, 赵建红, 等. 富有机质泥页岩有机质孔隙研究进展[J]. 成都理工大学学报(自科版), 2015, 42 (1): 50- 59.
	Luo Xiaoping , Wu Piao , Zhao Jianhong , et al. Study advances on organic pores in organic matter-rich mud shale[J]. Journal of Chengdu University of Technology (Science & Technology Edition), 2015, 42 (1): 50- 59.
11	曹涛涛, 刘光祥, 曹清古, 等. 有机显微组成对泥页岩有机孔发育的影响——以川东地区海陆过渡相龙潭组泥页岩为例[J]. 石油与天然气地质, 2018, 39 (1): 40- 53.
	Cao Taotao , Liu Guangxiang , Cao Qinggu , et al. Influence of maceral composition on organic pore development in shale: A case study of transitional Longtan Formation shale in eastern Sichuan Basin[J]. Oil & Gas Geology, 2018, 39 (1): 40- 53.
12	谭静强, 张煜麟, 罗文彬, 等. 富有机质泥页岩微纳米孔隙结构研究进展[J]. 矿物岩石地球化学通报, 2019, 38 (1): 18- 29.
	Tan Jingqiang , Zhang Yulin , Luo Wenbin , et al. Research progress on microscale and nanoscale pore structures of organic-rich muddy shales[J]. Bulletin of Mineralogy, Petrology and Geochemistry, 2019, 38 (1): 18- 29.
13	Jiao K , Yao S , Liu C , et al. The characterization and quantitative analysis of nanopores in unconventional gas reservoirs utilizing FESEM-FIB and image processing: An example from the lower Silurian Longmaxi Shale, upper Yangtze region, China[J]. International Journal of Coal Geology, 2014, 128-129 (3): 1- 11.
14	Ma Y , Zhong N , Cheng L , et al. Pore structure of the graptolite-derived OM in the Longmaxi Shale, southeastern Upper Yangtze Region, China[J]. Marine and Petroleum Geology, 2016, 72, 1- 11. doi: 10.1016/j.marpetgeo.2016.01.009
15	Gai S , Liu H , He S , et al. Shale reservoir characteristics and exploration potential in the target: A case study in the Longmaxi Formation from the southern Sichuan Basin of China[J]. Journal of Natural Gas Science and Engineering, 2016, 31, 86- 97. doi: 10.1016/j.jngse.2016.02.060
16	Sun M , Yu B , Hu Q , et al. Nanoscale pore characteristics of the Lower Cambrian Niutitang Formation Shale: A case study from Well Yuke #1 in the Southeast of Chongqing, China[J]. International Journal of Coal Geology, 2016, 154-155, 16- 29. doi: 10.1016/j.coal.2015.11.015
17	Milliken K L , Rudnicki M , Awwiller D 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	Chen Q , Zhang J , Tang X , et al. Relationship between pore type and pore size of marine shale: An example from the Sinian-Cambrian formation, upper Yangtze region, South China[J]. International Journal of Coal Geology, 2016, 158, 13- 28. doi: 10.1016/j.coal.2016.03.001
19	Wang G . Deformation of organic matter and its effect on pores in mud rocks[J]. AAPG Bulletin, 2020, 103, 21- 36. doi: 10.1306/04241918098
20	赵建华, 金之钧, 金振奎, 等. 四川盆地五峰组-龙马溪组页岩岩相类型与沉积环境[J]. 石油学报, 2016, 37 (5): 572- 586.
	Zhao Jianhua , Jin Zhijun , Jin Zhenkui , et al. Lithofacies types and sedimentary environment of shale in Wufeng-Longmaxi Formation, Sichuan Basin[J]. Acta Petrolei Sinica, 2016, 37 (5): 572- 586.
21	翟刚毅, 包书景, 庞飞, 等. 贵州遵义地区安场向斜"四层楼"页岩油气成藏模式研究[J]. 中国地质, 2017, 44 (1): 1- 12. doi: 10.3969/j.issn.1006-9372.2017.01.001
	Zhai Gangyi , Bao Shujing , Pang Fei , et al. Peservoir-forming pattern of "four-storey" hydrocarbon accumulation in Anchang syncline of northern Guizhou Province[J]. Geology in China, 2017, 44 (1): 1- 12. doi: 10.3969/j.issn.1006-9372.2017.01.001
22	郑和荣, 彭勇民, 唐建信, 等. 中、上扬子地区常压页岩气勘探前景——以湘中坳陷下寒武统为例[J]. 石油与天然气地质, 2019, 40 (6): 1155- 1167.
	Zheng Herong , Peng Yongmin , Tang Jianxin , et al. Exploration prospect of normal-pressure shale gas in Middle and Upper Yangtze regions: A case study of the Lower Cambrian shale in Xiangzhong Depression[J]. Oil & Gas Geology, 2019, 40 (6): 1155- 1167.
23	罗超, 刘树根, 孙玮, 等. 上扬子区下寒武统牛蹄塘组页岩气基本特征研究——以贵州丹寨南皋剖面为例[J]. 天然气地球科学, 2014, 25 (3): 453- 470.
	Luo Chao , Liu Shugen , Sun Wei , et al. Basic characteristics of shale gas in the Lower Cambrian Niutitang Formation in the Upper Yangtze Region: Taking Nangao section in Danzhai as an example[J]. Natural Gas Geoscience, 2014, 25 (3): 453- 470.
24	赵建华, 金之钧, 林畅松, 等. 上扬子地区下寒武统筇竹寺组页岩沉积环境[J]. 石油与天然气地质, 2019, 40 (4): 701- 715.
	Zhao Jianhua , Jin Zhijun , Lin Changsong , et al. Sedimentary environment of the Lower Cambrian Qiongzhusi Formation shale in the Upper Yangtze region[J]. Oil & Gas Geology, 2019, 40 (4): 701- 715.
25	牟传龙, 葛祥英, 许效松, 等. 中上扬子地区晚奥陶世岩相古地理及其油气地质意义[J]. 古地理学报, 2014, 16 (4): 427- 440.
	Mou Chuanlong , Ge Xiangying , Xu Xiaosong , et al. Lithofacies palaeogeography of the Late Ordovician and its petroleum geological significance in Middle-Upper Yangtze Region[J]. Journal of palaeogeography, 2014, 16 (4): 427- 440.
26	冯常茂, 牛新生, 吴冲龙. 黔中隆起及周缘地区下组合含油气流体包裹体研究[J]. 岩石矿物学杂志, 2008, 27 (2): 121- 126. doi: 10.3969/j.issn.1000-6524.2008.02.004
	Feng Changmao , Niu Xinsheng , Wu Chonglong . A study of hydrocarbon fluid inclusions in Qianzhong uplift and its adjacent areas[J]. Acta Petrologica et mineralogica, 2008, 27 (2): 121- 126. doi: 10.3969/j.issn.1000-6524.2008.02.004
27	沃玉进, 周雁, 肖开华. 中国南方海相层系埋藏史类型与生烃演化模式[J]. 沉积与特提斯地质, 2007, 27 (3): 96- 102.
	Wo Yujin , Zhou Yan , Xiao Kaihua . The burial history and models for hydrocarbon generation and evolution in the marine strata in southern China[J]. Sedimentary Geology and Tethyan Geology, 2007, 27 (3): 96- 102.
28	Chen J , Xiao X.M . Evolution of nanoporosity in organic-rich shales during thermal maturation[J]. Fuel, 2014, 129 (4): 173- 181.
29	胡海燕. 富有机质Woodford页岩孔隙演化的热模拟实验[J]. 石油学报, 2013, 34 (5): 820- 825.
	Hu Haiyan . Porosity evolution of the organic-rich shale with thermal maturity increasing[J]. Acta Petrolei Sinica, 2013, 34 (5): 820- 825.
30	何陈诚, 何生, 郭旭升, 等. 焦石坝区块五峰组与龙马溪组一段页岩有机孔隙结构差异性[J]. 石油与天然气地质, 2018, 39 (3): 472- 484.
	He Chencheng , He Sheng , Guo Xusheng , et al. Structural differences in organic pores between shales of the Wufeng Formation and of the Longmaxi Formation's first Member, Jiaoshiba Block, Sichuan Basin[J]. Oil & Gas Geology, 2018, 39 (3): 472- 484.
31	Slatt R , O'brien N . Pore types in the Barnett and Woodford gas shales: Contribution to understanding gas storage and migration pathways in finegrained rocks[J]. AAPG Bulletin, 2011, 95, 2017- 2030. doi: 10.1306/03301110145
32	张光荣, 聂海宽, 唐玄, 等. 页岩中黄铁矿类型及其对页岩气富集的影响——以四川盆地及其周缘五峰组-龙马溪组页岩为例[J]. 石油实验地质, 2020, 42 (3): 459- 466.
	Zhang Guangrong , Nie Haikuan , Tang Xuan , et al. Pyrite type and its effect on shale gas accumulation: A case study of Wufeng-Longmaxi shale in Sichuan Basin and its periphery[J]. Petroleum Geology & Experiment, 2020, 42 (3): 459- 466.
33	孙川翔, 聂海宽, 刘光祥, 等. 石英矿物类型及其对页岩气富集开采的控制——以四川盆地及其周缘五峰组-龙马溪组为例[J]. 地球科学, 2019, 44 (11): 3690- 3704.
	Sun Chuanxiang , Nie Haikuan , Liu Guangxiang , et al. Quartz type and its control on shale gas enrichment and production: A Case Study of the Wufeng-Longmaxi Formations in the Sichuan Basin and its surrounding areas, China[J]. Earth Science, 2019, 44 (11): 3690- 3704.
34	Loucks R , Reed R . Scanning-electron-microscope petrographic evidence for distinguishing organic matter pores associated with depositional organic matter versus migrated organic matter in mudrocks[J]. GCAGS Journal, 2014, 3, 51- 60.
35	聂海宽, 何治亮, 刘光祥, 等. 四川盆地五峰组-龙马溪组页岩气优质储层成因机制[J]. 天然气工业, 2020, 40 (6): 31- 41.
	Nie Haikuan , He Zhiliang , Liu Guangxiang , et al. Genetic mechanism of high-quality shale reservoirs in the Wufeng-Longmaxi Fms in the Sichuan Basin[J]. Natural Gas Industry, 2020, 40 (6): 31- 41.
36	Wu S , Yang Z , Zhai X , et al. An experimental study of organic matter, minerals and porosity evolution in shales within high-temperature and high-pressure constraints[J]. Marine and Petroleum Geology, 2019, 102, 377- 390.
37	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]. Petroleum Exploration and Development, 2013, 40 (6): 764- 768.
38	Kuila U , Prasad M . Specific surface area and pore-size distribution in clays and shales[J]. Geophysical Prospecting, 2013, 61 (2): 341- 362.

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