Lithologic Reservoirs ›› 2026, Vol. 38 ›› Issue (2): 56-64.doi: 10.12108/yxyqc.20260205

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Main controlling factors of hydrocarbon accumulation and exploration directions of the second member of Triassic Jialingjiang Formation, southern Sichuan Basin

GU Wen1(), CHEN Hui1, ZHU Yadong1, WU Furong1, ZHAO Zhou1, WANG Shuyan1, WANG Wei2   

  1. 1 Research Institute, BGP, CNPC, Chengdu 610213, China
    2 Exploration and Development Research Institute, PetroChina Southwest Oil & Gasfield Company, Chengdu 610041, China
  • Received:2025-09-01 Revised:2025-11-26 Online:2026-03-01 Published:2026-02-06

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Abstract:

Natural gas exploration and development of Triassic Jialingjiang Formation in Sichuan Basin have a long history, with cumulative proven reserves exceeding 100 billion cubic meters. Based on the latest drilling, logging, 2D and 3D seismic data, a systematic study of hydrocarbon accumulation conditions of the second member of Jialingjiang Formation in Sichuan Basin was conducted, focusing on sedimentary reservoirs, paleostructural evolution, and source-reservoir matching, and favorable exploration zones were indentified.The results show that: （1） Gas reservoirs of Triassic Jialingjiang Formation in southern Sichuan Basin are characte-rized by strong reservoir heterogeneity and long-distance hydrocarbon accumulation. Fault systems provide critical migration pathways and storage spaces, while paleostructural highs are essential for hydrocarbon accumulation. （2） Jialingjiang Formation in southern Sichuan Basin possesses favorable hydrocarbon accumulation conditions, such as multiple hydrocarbon sources, large-scale development of high-quality beach facies reservoirs, location in paleo and present structural highs, and effective connectivity to source rocks via source-connecting faults. The hydrocarbon accumulation model is “paleo-reservoir controlling scale, paleo-uplift controlling storage, faults connecting sources, and fractures controlling enrichment”. （3） Structural synclines and slope areas in southern and eastern Sichuan Basin, characterized by shallow burial depth and great exploration potential, are favorable targets for further exploration of Jialingjiang Formation in Sichuan Basin.

Key words: carbonate reservoir, beach facies, multiple hydrocarbon sources supply, source-connecting fault, Luzhou paleo-uplift, the second member of Jialingjiang Formation, Triassic, southern Sichuan Basin, Sichuan Basin

CLC Number: 

  • TE121

Fig. 1

Distribution of paleo-uplift and low steep structures of Luzhou (a) and comprehensive stratigraphic column of Triassic Jialingjiang Formation (b) in southern Sichuan Basin"

Fig. 2

Hydrocarbon accumulation characteristics of Triassic Jialingjiang Formation in southern Sichuan Basin"

Fig. 3

Thickness distribution features of Silurian source rock (a) and Upper Permian source rock (b), Sichuan Basin"

Fig. 4

Geomorphological seismic sections of the early deposition of Triassic Jialingjiang Formation, Sichuan Basin"

Fig. 5

Paleogeomorphology distribution of the early deposition of Triassic Jialingjiang Formation, Sichuan Basin"

Fig. 6

Strong and weak seismic amplitude variation of the bottom boundary of the second member of Triassic Jialingjiang Formation, southern Sichuan Basin"

Fig. 7

Paleotectonic features of Triassic Jialingjiang Formation in Caledonian paleo-uplift and its northern flank during late Indosinian to early Yanshanian, Sichuan Basin"

Fig. 8

Schematic diagram of formation and transformation of paleo-oil reservoirs in Permian Maokou Formation and Triassic Jialingjiang Formation of Luzhou paleo-uplift, southern Sichuan Basin"

Fig. 9

Classification of fault systems and hydrocarbon source rock connecting features in southern Sichuan Basin"

Fig. 10

Sedimentary facies and favorable plays of the second member of Triassic Jialingjiang Formation, Sichuan Basin"

[1] 左银辉, 文华国, 廖义沙, 等. 川东地区下三叠统嘉陵江组天然气特征及气源分析[J]. 东北石油大学学报, 2021, 45(1):62-72.
ZUO Yinhui, WEN Huaguo, LIAO Yisha, et al. Natural gas characteristics and gas sources of the Lower Triassic Jialingjiang Formation in the eastern Sichuan[J]. Journal of Northeast Petroleum University, 2021, 45(1):62-72.
[2] 廖荣峰, 汤晶, 宋晓波, 等. 川西南下三叠统嘉陵江组四—五段孔隙型储层特征及勘探前景[J]. 石油实验地质, 2022, 44(1):60-70.
LIAO Rongfeng, TANG Jing, SONG Xiaobo, et al. Characteristic and exploration potential of porous reservoirs in 4th to 5th members of Lower Triassic Jialingjiang Formation in southwestern Sichuan Basin[J]. Petroleum Geology & Experiment, 2022, 44(1):60-70.
[3] 张本健, 裴森奇, 尹宏, 等. 川西南部嘉陵江组储层特征及主控因素[J]. 岩性油气藏, 2011, 23(3) :80-83.
ZHANG Benjian, PEI Senqi, YIN Hong, et al. Reservoir cha-racteristics and main controlling factors of Jialingjiang Formation in southwestern Sichuan Basin[J]. Lithologic Reservoirs, 2011, 23(3):80-83.
[4] 文华国, 罗冰, 钟克修, 等. 川东地区三叠系嘉陵江组邻水-丰都台凹的发现及油气勘探意义[J]. 岩性油气藏, 2023, 35(1):12-24.
doi: 10.12108/yxyqc.20230102
WEN Huaguo, LUO Bing, ZHONG Kexiu, et al. Discovery of Linshui-Fengdu intraplatform depression of Triassic Jialingjiang Formation in eastern Sichuan Basin and its significance for oil and gas exploration[J]. Lithologic Reservoirs, 2023, 35(1):12-24.
doi: 10.12108/yxyqc.20230102
[5] 祖克威, 范凌霄, 王波, 等. 四川盆地普光地区嘉陵江组二段碳酸盐岩储层裂缝发育规律[J]. 石油天然气与地质, 2020, 41(6):1189-1196.
ZU Kewei, FAN Lingxiao, WANG Bo, et al. Development pa-tterns of fractures in carbonate reservoirs in the 2nd member of Jialingjiang Formation,Puguang area,Sichuan Basin[J]. Oil & Gas Geology, 2020, 41(6):1189-1196.
[6] 刘勇, 宋晓波, 廖荣峰, 等. 川西南井研地区嘉陵江组气藏成藏条件及演化过程[J]. 科学技术与工程, 2023, 23(18):7661-7670.
LIU Yong, SONG Xiaobo, LIAO Rongfeng, et al. Accumulation conditions and evolution process of Jialingjiang Formation gas reservoir in Jingyan area,Southwest Sichuan Basin[J]. Science Technology and Engineering, 2023, 23(18):7661-7670.
[7] 杨跃明, 文龙, 罗冰, 等. 四川盆地达州—开江古隆起沉积构造演化及油气成藏条件分析[J]. 天然气工业, 2016, 36(8):1-10.
YANG Yueming, WEN Long, LUO Bing, et al. Sedimentary tectonic evolution and reservoir-forming conditions of the Dazhou-Kaijiang paleo-uplift,Sichuan Basin[J]. Natural Gas Industry, 2016, 36(8):1-10.
[8] 李海, 郑马嘉, 李延钧, 等. 四川盆地泸州印支期古隆起嘉陵江组油气分布规律及勘探开发前景[J]. 天然气工业, 2023, 43(7):10-21.
LI Hai, ZHENG Majia, LI Yanjun, et al. Oil and gas distribution law and exploration and development prospects of Jialingjiang Formation in Luzhou Indosinian paleouplift of the Sichuan Basin[J]. Natural Gas Industry, 2023, 43(7):10-21.
[9] 王维斌, 苟洪才, 邱彬, 等. 四川盆地东部下三叠统嘉陵江组储层特征[J]. 天然气工业, 2005, 25(10):30-32.
WANG Weibin, GOU Hongcai, QIU Bin, et al. Reservior characteristics of T1j in the east part of Sichuan Basin[J]. Natural Gas Industry, 2005, 25(10):30-32.
[10] 李延钧, 李其荣, 杨坚, 等. 泸州古隆起嘉陵江组油气运聚规律与成藏[J]. 石油勘探与开发, 2005, 32(5):20-24.
LI Yanjun, LI Qirong, YANG Jian, et al. Oil and gas migration and accumulation and reservoir formation in Jialingjiang Formation of Luzhou paleouplift[J]. Petroleum Exploration and Development, 2005, 32(5):20-24.
[11] 陈伟, 江青春, 宋金民, 等. 川东北地区嘉陵江组四段沉积特征及油气地质意义[J]. 成都理工大学学报(自然科学版), 2025, 52(3):575-590.
CHEN Wei, JIANG Qingchun, SONG Jinmin, et al. Sedimentary characteristics and the geological significance of oil and gas in the fourth member of the Jialingjiang Formation in the northeastern Sichuan Basin[J]. Journal of Chengdu University of Technology (Science & Technology Edition), 2025, 52(3):575-590.
[12] 李延钧, 梁艳, 雷卞军, 等. 川中—川南过渡带西部嘉二段天然气成因与来源[J]. 天然气地球科学, 2006, 17(6):820-823.
doi: 10.11764/j.issn.1672-1926.2006.06.820
LI Yanjun, LIANG Yan, LEI Bianjun, et al. Natural gas genesis for the section Ⅱ of west Jialingjiang Formation in middle Sichuan-south Sichuan transitional belt[J]. Natural Gas Geoscience, 2006, 17(6):820-823.
doi: 10.11764/j.issn.1672-1926.2006.06.820
[13] 胡明毅, 魏国齐, 李思田, 等. 四川盆地嘉陵江组层序—岩相古地理特征和储层预测[J]. 沉积学报, 2010, 28 (6):1145-1152.
HU Mingyi, WEI Guoqi, LI Sitian, et al. Characteristics of sequence-based lithofacies and paleogeography,and reservoir prediction of the Jialingjiang Formation in Sichuan Basin[J]. Acta Sedimentologica Sinica, 2010, 28(6):1145-1152.
[14] 曹剑, 谭秀成, 陈景山. 川西南犍为地区下三叠统嘉陵江组沉积相及其演化特征[J]. 高校地质学报, 2004, 10(3) :429-439.
CAO Jian, TAN Xiucheng, CHEN Jingshan. Sedimentary facies and their evolution characteristics in Jialingjiang Formation of Qianwei area,southwest Sichuan Basin[J]. Geological Journal of China Universities, 2004, 10(3):429-439.
[15] 徐国盛, 何玉, 袁海锋, 等. 四川盆地嘉陵江组天然气藏的形成与演化研究[J]. 西南石油大学学报(自然科学版), 2011, 33(2):171-178.
XU Guosheng, HE Yu, YUAN Haifeng, et al. Study on the formation and evolution of gas accumulation in Lower Triassic Jialingjiang Formation of Sichuan Basin[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2011, 33 (2):171-178.
[16] 李弢, 陈克勇. 川南嘉陵江组天然气成藏类型及控制因素探讨[J]. 物探化探计算技术, 2008, 30(3):206-211.
LI Tao, CHEN Keyong. Discussion on natural gas reservoiring modes and control factors of Jialingjiang Formation in south Sichuan Basin[J]. Computing Techniques for Geophysical and Geochemical Exploration, 2008, 30(3):206-211.
[17] 王文之, 田景春, 张翔, 等. 川南丹凤—塘河地区嘉陵江组沉积环境分析[J]. 岩性油气藏, 2011, 23(6):50-55.
WANG Wenzhi, TIAN Jingchun, ZHANG Xiang, et al. Sedimentary environment of Jialingjiang Formation in Danfeng-Tanghe area,southern Sichuan Basin[J]. Lithologic Reservoirs, 2011, 23(6):50-55.
[18] 文华国, 梁金同, 周刚, 等. 四川盆地及周缘寒武系洗象池组层序-岩相古地理演化与天然气有利勘探区带[J]. 岩性油气藏, 2022, 34(2):1-16.
doi: 10.12108/yxyqc.20220201
WEN Huaguo, LIANG Jintong, ZHOU Gang, et al. Sequence-based lithofacies paleogeography and favorable natural gas exploration areas of Cambrian Xixiangchi Formation in Sichuan Basin and its periphery[J]. Lithologic Reservoirs, 2022, 34(2):1-16.
doi: 10.12108/yxyqc.20220201
[19] 黄涵宇, 何登发, 李英强, 等. 四川盆地东南部泸州古隆起的厘定及其成因机制[J]. 地学前缘, 2019, 26(1):102-120.
doi: 10.13745/j.esf.sf.2019.1.9
HUANG Hanyu, HE Dengfa, LI Yingqiang, et al. Determination and formation mechanism of the Luzhou paleouplift in the southeastern Sichuan Basin[J]. Earth Science Frontiers, 2019, 26(1):102-120.
doi: 10.13745/j.esf.sf.2019.1.9
[20] 汪泽成, 赵文智, 彭红雨. 四川盆地复合含油气系统特征[J]. 石油勘探与开发, 2002, 29(2):26-28.
WANG Zecheng, ZHAO Wenzhi, PENG Hongyu. Characteristics of multi-source petroleum systems in Sichuan Basin[J]. Petroleum Exploration and Development, 2002, 29(2):26-28.
[21] 隆辉, 邓飞涌, 廖小丽, 等. 四川盆地南部花果山地区嘉陵江组储层特征与成岩作用[J]. 沉积与特提斯地质, 2018, 38(3):41-50.
LONG Hui, DENG Feiyong, LIAO Xiaoli, et al. Reservoir characteristics and diagenesis of the Jialingjiang Formation in the Huaguoshan region,southern Sichuan Basin[J]. Sedimentary Geology and Tethyan Geology, 2018, 38(3):41-50.
[22] 乔占峰, 李国蓉, 李弢, 等. 泸州古隆起地区嘉陵江组层序特征及其对碳酸盐岩储层的控制[J]. 沉积学报, 2008, 26(1):92-99.
QIAO Zhanfeng, LI Guorong, LI Tao, et al. Sequence stratigraphic features and their controls on carbonate reservoirs for the Triassic Jialingjiang Formation of the Luzhou paleohigh in Sichuan Basin[J]. Acta Sedimentologica Sinica, 2008, 26(1):92-99.
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