鄂尔多斯盆地神府区块煤系致密砂岩气储层特征、成岩作用与主控因素#br#

doi:10.3969/j.issn.1672-7703.2025.05.004

摘要/Abstract

摘要： 鄂尔多斯盆地神府区块本溪组及太原组致密气取得勘探发现，了解其储层特征及主要控制因素，对实现煤系致密砂岩气的高效开发具有重要意义。基于岩石学、铸体薄片、扫描电镜、高压压汞等实验测试手段，对神府区块太原组—本溪组致密砂岩储层岩石类型、储层物性、成岩作用等展开分析，并据此讨论影响储层发育的主控因素。本溪组和太原组砂岩储层岩性主要为石英砂岩、岩屑石英砂岩和长石岩屑砂岩，主要储集空间类型为粒内溶孔、粒间溶孔、晶间孔、基质溶孔及微裂缝，其次为原生残余孔，喉道多呈细—中型喉道；压实作用与部分胶结作用对砂岩储层表现为破坏性作用，而溶蚀、构造作用与绿泥石薄膜具有建设性作用。太原组—本溪组砂岩储层发育受沉积微相控制明显，三角洲水下分流河道与潮汐水道沉积微相有利于优质储层的发育，而岩屑的溶蚀作用、构造作用产生的微裂缝以及绿泥石薄膜对致密砂岩储层物性具有改善作用；优质储集砂体主要分布于解家堡东南部与栏杆堡南部水下分流河道及潮道发育地区。

关键词: 鄂尔多斯盆地, 神府区块, 太原组—本溪组, 致密气, 储层特征, 成岩作用, 主控因素

Abstract: The tight gas discoveries have been made in Benxi Formation and Taiyuan Formation in Shenfu block, Ordos Basin. A better understanding of reservoir characteristics and the main controlling factors is of great significance for the high-efficiency development of coal measure tight sandstone gas. Based on petrology, cast thin section, scanning electron microscopic imaging and high pressure mercury injection test methods, the rock types, reservoir physical properties and diagenesis of tight sandstone reservoirs in Taiyuan Formation–Benxi Formation in Shenfu block have been analyzed, and the main controlling factors affecting reservoir development have been discussed. The study results show that the reservoir lithology of Benxi Formation and Taiyuan Formation is mainly composed of quartz sandstone, lithic quartz sandstone and feldspar lithic sandstone. The main reservoir space types include intragranular dissolution pores, intergranular dissolution pores, intercrystal pores, matrix dissolution pores and micro-fractures, followed by primary residual pores, and the throats are mostly fine–medium throats. Compaction and partial cementation had destructive effects on sandstone reservoirs, while dissolution, tectonic activities and chlorite film had constructive effects. The development of sandstone reservoirs in Taiyuan Formation–Benxi Formation was significantly controlled by sedimentary microfacies. The delta underwater distributary channel and tidal channel microfacies were conducive to the development of high-quality reservoirs, and the physical properties of tight sandstone reservoirs were further improved by lithic dissolution, micro-fractures generated by tectonic activities and chlorite films. The high-quality reservoir sand bodies are mainly distributed in the southeastern Xiejiapu and the southern Langanpu areas with underwater distributary channels and tidal channels developed.

Key words: Ordos Basin, Shenfu block, Taiyuan Formation–Benxi Formation, tight gas, reservoir characteristics, diagenesis, main control factor

中图分类号:

TE122

刘彦成, 梅啸寒, 田继军, 刘博元, 袁隐, 王大兴. 鄂尔多斯盆地神府区块煤系致密砂岩气储层特征、成岩作用与主控因素#br#[J]. 中国石油勘探, 2025, 30(5): 39-55.

Liu Yancheng, Mei Xiaohan, Tian Jijun, Liu Boyuan, Yuan Yin, Wang Daxing. Reservoir characteristics, diagenesis and main controlling factors for coal measure tight sandstone gas in Shenfu block, Ordos Basin[J]. China Petroleum Exploration, 2025, 30(5): 39-55.

参考文献

[1] 杨涛，张国生，梁坤，等.全球致密气勘探开发进展及中国发展趋势预测[J].中国工程科学，2012,14(6):64-68,76.
Yang Tao, Zhang Guosheng, Liang Kun, et al. The exploration of global tight sandstone gas and forecast of the development tendency in China [J]. Strategic Study of CAE, 2012,14(6):64-68,76.
[2] 邱振，邹才能，李建忠，等.非常规油气资源评价进展与未来展望[J].天然气地球科学，2013,24(2):238-246.
Qiu Zhen, Zou Caineng, Li Jianzhong, et al. Unconventional petroleum resources assessment: progress and future prospects [J]. Natural Gas Geoscience, 2013,24(2):238-246.
[3] 李建忠，郭彬程，郑民，等.中国致密砂岩气主要类型、地质特征与资源潜力[J].天然气地球科学，2012,23(4):607-615.
Li Jianzhong, Guo Bincheng, Zheng Min, et al. Main types,geological features and resource potential of tight sandstone gas in China [J]. Natural Gas Geoscience, 2012,23 (4):607-615.
[4] 邱中建，赵文智，胡素云，等.我国天然气资源潜力及其在未来低碳经济发展中的重要地位 [J].中国工程科学，2011,13(6):81-87.
Qiu Zhongjian, Zhao Wenzhi, Hu Suyun, et al. The natural gas resource potential and its important status in the coming low-carbon economy [J]. Strategic Study of CAE, 2011,13(6): 81-87.
[5] 邱中建，赵文智，邓松涛.我国致密砂岩气和页岩气的发展前景和战略意义[J].中国工程科学，2012,14(6):4-8,113.
Qiu Zhongjian, Zhao Wenzhi, Deng Songtao. Development prospact and strategic significance of tight gas and shale gas in China [J]. Strategic Study of CAE, 2012,14(6):4-8,113.
[6] Nelson P H. Pore-throat sizes in sandstones, tights and stones, and shales [J]. AAPG Bulletin, 2009,93(3):329-340.
[7] Jiang Zhenxue, Li Zhuo, Li Feng, et al. Tight sandstone gas accumulation mechanism and development models [J]. Petroleum Science, 2015,12:587-605.
[8] Zhu Shifa, Zhu Xiaomin, Jia Ye, et al. Diagenetic alteration, porethroat network,and reservoir quality of tight gas sandstone reservoirs: a case study of the Upper Paleozoic sequence in the northern Tianhuan Depression in the Ordos Basin, China [J].AAPG Bulletin, 2020,104(11):2297-2324.
[9] 于兴河，李顺利，杨志浩.致密砂岩气储层的沉积—成岩成因机理探讨与热点问题[J].岩性油气藏，2015,27(1):1-13,131.

Yu Xinghe, Li Shunli, Yang Zhihao. Discussion on the sedimentary diagenetic mechanism of tight sandstone gas reservoirs and hot topics [J]. Lithologic Reservoirs, 2015,27(1): 1-13,131.

[10] 马义权，陆永潮，刘树平，等.鄂南延长组长3段致密储层特征及相对优质储层形成机理[J].中南大学学报（自然科学版），2015,46(8): 3013-3024.

Ma Yiquan, Lu Yongchao, Liu Shuping, et al. The characteris-tics of tight reservoirs and the formation mechanism of relatively high-quality reservoirs in the Third Member of Yanchang Formation in southern Hubei [J]. Journal of Central South University (Science and Technology), 2015,46(8):3013-3024.
[11] 罗龙，高先志，孟万斌，等.深埋藏致密砂岩中相对优质储层形成机理：以川西坳陷新场构造带须家河组为例[J].地球学报，2017,38(6): 930-944.
Luo Long, Gao Xianzhi, Meng Wanbin, et al. The formation mechanism of relatively high quality reservoirs in deeply buried dense sandstones: taking the Xujiahe Formation in the Xinchang structural belt of the Western Sichuan Depression as an example [J]. Acta Geoscientica Sinica, 2017,38(6):930-944.
[12] 施振生，朱筱敏，张亚雄，等.四川盆地上三叠统沉积储层研究进展与热点分析[J].石油与天然气地质，2021,42(4):784-800.
Shi Zhensheng, Zhu Xiaomin, Zhang Yaxiong, et al.Research progress and hotspot analysis of the Upper Triassic sedimentary reservoirs in the Sichuan Basin [J]. Oil & Gas Geology, 2021, 42(4):784-800.
[13] 王晓晨，罗静兰，李文厚，等.鄂尔多斯盆地苏77区块盒8下亚段致密砂岩储层低渗成因与优质储层形成机理[J].地质科技情报，2018,37(2):174-182.
Wang Xiaochen, Luo Jinglan, Li Wenhou, et al.Genesis of low permeability and formation mechanism of high-quality reservoirs in the lower sub-segment of the He 8 tight sandstone reservoir in the Su 77 block of the Ordos Basin [J]. Geological Science and Technology Information, 2018,37(2):174-182.
[14] Qian Wendao, Yin Taiju, Zhang Changmin, et al. Diagenetic evolution of the Oligocene Huagang Formation in Xihu Sag, the East China Sea Shelf Basin [J]. Scientific Reports, 2020, 10(1):1-16.
[15] Ding Xiaoqi, Han Meimei, Zhang Shaonan. The role of provenance in the diagenesis of siliciclastic reservoirs in the Upper Triassic Yanchang Formation,Ordos Basin, China [J]. Petroleum Science, 2013,10(2):149-160.
[16] 谢升洪，李伟，冷福，等.致密砂岩油藏可动流体赋存规律及制约因素研究:以鄂尔多斯盆地华庆油田长6段储层为例[J].地质科技情报，2019,38(5):105-114.
Xie Shenghong, Li Wei, Leng Fu, et al.Study on the occurrence patterns and limiting factors of movable fluids in tight sandstone reservoirs: taking the Chang 6 reservoir of Huaqing Oilfield in the Ordos Basin as an example [J]. Geological Science and Technology Information, 2019,38(5): 105-114.
[17] 郭迎春，庞雄奇，陈冬霞，等.川西坳陷中段须二段致密砂岩储层致密化与相对优质储层发育机制[J].吉林大学学报（地球科学版），2012,42(增刊2):21-32.
Guo Yingchun, Pang Xiongqi, Chen Dongxia, et al. The densification and relative high-quality reservoir development mechanism of tight sandstone reservoirs in the Xu-2 Member of the middle section of the Western Sichuan Depression [J]. Journal of Jilin University (Earth Science Edition), 2012,42(S2):21-32.
[18] 苗凤彬，曾联波，祖克威，等.四川盆地梓潼地区须家河组储集层裂缝特征及控制因素[J].地质力学学报，2016,22(1):76-84.
Miao Fengbin, Zeng Lianbo, Zu Kewei, et al. Characteristics and control factors of fractures in the Xujiahe Formation reservoir in the Zitong area of the Sichuan Basin [J]. Journal of Geomechanics, 2016,22(1):76-84.
[19] 于波，罗小明，乔向阳，等.鄂尔多斯盆地延长油气区山西组山2段储层物性影响因素[J].中南大学学报（自然科学版），2012,43(10): 3931-3937.
Yu Bo, Luo Xiaoming, Qiao Xiangyang, et al.Factors affecting the physical properties of reservoirs in the Shan-2 Member of the Shanxi Formation in the Yanchang oil and gas area of the Ordos Basin [J]. Journal of Central South University (Science and Technology), 2012,43(10):3931-3937.
[20] 刘再振，刘玉明，李洋冰，等.鄂尔多斯盆地神府地区太原组致密砂岩储层特征及成岩演化[J].岩性油气藏，2017,29(6):51-59.
Liu Zaizhen, Liu Yuming, Li Yangbing, et al. Tight sandstone reservoir characteristics and diagenesis evolution of Taiyuan Formation in Shenmu-Fugu area, Ordos Basin [J]. Lithologic Reservoirs, 2017,29(6):51-59.
[21] 高计县，孙文举，吴鹏，等.鄂尔多斯盆地东北缘神府区块上古生界致密砂岩成藏特征[J].岩性油气藏，2021,33(1):121-130.
Gao Jixian, Sun Wenju, Wu Peng, et al. Accumulation characteristics of Upper Paleozoic tight sandstone in Shenfu block,northeastern margin of Ordos Basin [J]. Lithologic Reservoirs, 2021,33(1):121-130.
[22] 米立军，朱光辉.鄂尔多斯盆地东北缘临兴—神府致密气田成藏地质特征及勘探突破[J].中国石油勘探，2021,26(3):53-67.
Mi Lijun, Zhu Guanghui. Geological characteristics and exploration breakthrough in Linxing-Shenfu tight gas field, northeastern Ordos Basin [J]. China Petroleum Exploration, 2021,26(3):53-67.
[23] 傅宁，杨树春，贺清，等.鄂尔多斯盆地东缘临兴—神府区块致密砂岩气高效成藏条件[J].石油学报，2016,37(增刊1):111-120.
Fu Ning, Yang Shuchun, He Qing, et al. High-efficiency reservoir formation conditions of tight sandstone gas in Linxing-Shenfu blocks on the east margin of Ordos Basin [J].Acta Petrolei Sinica, 2016,37(S1):111-120.
[24] 刘畅，张道旻，李超，等.鄂尔多斯盆地临兴区块上古生界致密砂岩气藏成藏条件及主控因素[J].石油与天然气地质，2021,42(5): 1146-1158.
Liu Chang, Zhang Daomin, Li Chao, et al. Upper Paleozoic tight gas sandstone reservoirs and main controls, Linxing block,Ordos Basin [J]. Oil & Gas Geology, 2021,42(5):1146-1158.
[25] 刘建忠，朱光辉，刘彦成，等.鄂尔多斯盆地东缘深部煤层气勘探突破及未来面临的挑战与对策：以临兴—神府区块为例[J].石油学报，2023,44(11):1827-1839.
Liu Jianzhong, Zhu Guanghui, Liu Yancheng, et al. Break-through, future challenges and countermeasures of deep coalbed methane in the eastern margin of Ordos Basin: a case study of Linxing-Shenfu block [J]. Acta Petrolei Sinica, 2023,44(11):1827-1839.
[26] Zheng Dingye, Pang Xiongqi, Jiang Fujie, et al. Characteris-tics and controlling factors of tight sandstone gas reservoirs in the Upper Paleozoic strata of Linxing area in the Ordos Basin, China [J]. Journal of Natural Gas Science and Engineering, 2020,75:103135.
[27] 刘喜杰，马遵敬，韩冬，等.鄂尔多斯盆地东缘临兴区块致密砂岩优质储层形成的主控因素[J].天然气地球科学，2018,29(4):481-490.
Liu Xijie, Ma Zunjing, Han Dong, et al. Research on the main factors of high quality tight sandstone reservoir in Linxing block, Ordos Basin [J]. Natural Gas Geoscience, 2018, 29(4):481-490.
[28] Dou Wenchao, Liu Luofu, Wu Kangjun, et al. Diagenetic heterogeneity, pore throats characteristic and their effects on reservoir quality of the Upper Triassic tight sandstones of Yanchang Formation in Ordos Basin, China [J]. Marine and Petroleum Geology, 2018,98:243-257.
[29] Zhu Peng, Lin Chengyan, Ren Huaiqiang, et al. Micro-fracture characteristics of tight sandstone reservoirs and its evaluation by capillary pressure curves: a case study of permian sandstones in Ordos Basin, China [J]. Journal of Natural Gas Science and Engineering, 2015,27:90-97.
[30] 白雪见.沉积相及成岩作用控制下的储层物性分析[D].西安：西北大学，2015.
Bai Xuejian. Analysis of reservoir physical properties under controlling by sedimentary facies and diagenesis [D]. Xi’an: Northwest University, 2015.
[31] Wang Fuwei, Chen Dongxia, Yao Dongsheng, et al. Disparities in tight sandstone reservoirs in different source-reservoir assemblages and their effect on tight oil accumulation: Triassic Chang 7 member in the Qingcheng area, Ordos Basin [J]. Journal of Petroleum Science and Engineering, 2022,217: 110914.
[32] 高计县，吴鹏，周煜哲.神府解家堡区上古生界致密砂岩储层特征及主控因素[J].地质科学，2019,54(1):114-129.
Gao Jixian, Wu Peng, Zhou Yuzhe. Characteristics and main controlling factors of tight sand reservoir in Shenfu block, Ordos Basin [J]. Chinese Journal of Geology, 2019,54(1):114-129.
[33] Liu Hancheng, Yang Youyun, Wang Fengqin, et al. Micro pore and throat characteristics and origin of tight sandstone reservoirs: a case study of the Triassic Chang 6 and Chang 8 members in Longdong area, Ordos Basin, NW China [J]. Petroleum Exploration and Development, 2018,45(2):239-250.
[34] Huang Peng, Liu Mingjie, Cao Bo, et al. Formation mechanism of carbonate cement in tight sandstone reservoirs in the depression zone of foreland basin and its impact on reservoir heterogeneity: the Upper Triassic Xujiahe Formation in western Sichuan foreland Basin, China [J]. Marine and Petroleum Geology, 2024,167:106971.
[35] Jiu Bo, Huang Wenhui, Li Yuan, et al. Influence of clay minerals and cementation on pore throat of tight sandstone gas reservoir in the eastern Ordos Basin, China [J]. Journal of Natural Gas Science and Engineering, 2021,87:103762.
[36] Zhang Yangchen, Qu Xiyu, Chen Xuan, et al. Influence of coal rock on tight sandstone reservoirs in coal seam roofs: a case study of the lower Jurassic in the Taibei Sag, Turpan-Hami Basin, China [J]. Marine and Petroleum Geology, 2024, 165:106887.
[37] 李长海，赵伦，刘波，等.微裂缝研究进展、意义及发展趋势[J].天然气地球科学，2020,31(3):402-416.
Li Changhai, Zhao Lun, Liu Bo, et al. Research status, significance and development trend of microfractures [J]. Natural Gas Geoscience, 2020,31(3):402-416.
[38] 王涛，徐鸣洁，王良书，等.鄂尔多斯及邻区航磁异常特征及其大地构造意义[J].地球物理学报，2007,50(1):163-170.
Wang Tao, Xu Mingjie, Wang Liangshu, et al. Aeromagnetic anomaly analysis of Ordos and adjacent regions and its tectonic implications[J]. Chinese Journal of Geophysics, 2007,50(1):163-170.
[39] 刘池洋，赵红格，桂小军，等.鄂尔多斯盆地演化—改造的时空坐标及其成藏(矿)响应[J].地质学报，2006,80(5):617-638.
Liu Chiyang, Zhao Hongge, Gui Xiaojun, et al. Space—time coordinate of the evolution and reformation and mineralization response in Ordos Basin [J]. Acta Geologica Sinica, 2006,80(5): 617-638.
[40] 陈刚，李向平，周立发，等.鄂尔多斯盆地构造与多种矿产的耦合成矿特征[J].地学前缘，2005,12(4):535-541.
Chen Gang, Li Xiangping, Zhou Lifa, et al. Ordos Basin tectonics relative to the coupling coexistence of multiple energy resources [J]. Earth Science Frontiers, 2005,12(4):535-541.
[41] 石油工业标准化技术委员会石油地质勘探专业标准化委员会.碎屑岩成岩阶段划分：SY/T 5477—2024 [S].北京：石油工业出版社，2024.
Petroleum geological exploration professional standardization committee of petroleum industry standardization technical committee. Division of diagenesis process of clastic rock: SY/T 5477—2024 [S]. Beijing: Petroleum Industry Press, 2024.