鄂尔多斯盆地环县地区三叠系长7段烃源岩特征及油源对比

doi:10.12108/yxyqc.20260212

Lithologic Reservoirs ›› 2026, Vol. 38 ›› Issue (2): 134-144.doi: 10.12108/yxyqc.20260212

• PETROLEUM EXPLORATION • Previous Articles Next Articles

Characteristics and oil-source correlation of Triassic Chang 7 member source rocks in Huanxian area, Ordos Basin

LI Tao¹(), MA Guofu², ZHAO Leyi²(), YUAN Li², MA Qilin², XIE Jingyu², ZHANG Bo², LI Henan²

¹ Department of Exploration, PetroChina Yumen Oilfield Company, Jiuquan 735019, Gansu, China
² Research Institute of Exploration and Development, PetroChina Yumen Oilfield Company, Jiuquan 735019, Gansu, China

Received:2025-07-11 Revised:2025-09-23 Published:2026-01-20 Online:2026-03-01

Abstract

Abstract:

Triassic Chang 7 member shale is the main source rock in Huanxian area of the western Ordos Basin. Through rock pyrolysis, total organic carbon measurement, gas chromatography-mass spectrometry, and AI-assisted comprehensive biomarker analysis， geochemical characteristics of crude oils and source rocks were systematically studied，the origin of crude oil and the proportion of hydrocarbon supply from mudstones and shales were clarified, and their hydrocarbon accumulation models were explored. The results show that：（1） Triassic Chang 7 member in the eastern Huanxian area is primarily developed shale,characterized by high organic matter abundance, favorable organic matter type, significant hydrocarbon generation potential. In contrast, the western part is dominated by dark mudstone, with TOC values ranging from 0.40% to 6.23%, hydrocarbon generation potential （S₁ + S₂） of 0.50-13.13 mg/g, organic matter types of TypeⅡ and Ⅲ, and an average vitrinite reflectance (R_o) of 0.84%, indicating a mature stage. It belongs to a medium-poor source rock with relatively lower hydrocarbon generation potential compared to shale. （2） Biomarker compositions of eastern shales and western mudstones are fundamentally similar, but significant differences exist in certain biomarker parameter ratios. Eastern shales exhibit low Pr/Ph ratios, high Ts/Tm, C₂₉Ts/C₂₉H, C₃₀*/C₂₉H, and C₃₀*/C₃₀H values. In contrast, western dark mudstones display relatively high Pr/Ph ratios, low Ts/Tm, C₂₉Ts/C₂₉H, C₃₀*/C₂₉H, and C₃₀*/C₃₀H values. These differences reflect the controlling effect of paleo-sedimentary environments on the development of mudstones and shales in the study area. （3） Chang 8 member in the study area develops three types of crude oil: Type A is crude oil predominantly from the eastern Chang 8 member, exhibiting high Ts/Tm and C₂₉Ts/C₂₉H values, along with relative high C₃₀*/C₂₉H and C₃₀*/C₃₀H values, type A is primarily derived from eastern shales. Type C, though currently less abundant, is characterized by low Ts/Tm, C₂₉Ts/C₂₉H, C₃₀*/C₂₉H, and C₃₀*/C₃₀H values, predominant sourcing from western mudstone. Type B, found in the western Chang 8 member, displays intermediate biomarker between type A and type C, with moderate Ts/Tm, C₂₉Ts/C₂₉H, C₃₀*/C₂₉H, and C₃₀*/C₃₀H values. It is a mixed crude oil composition dominantly contributed by eastern shales.

Key words: shale, geochemical characteristics, biomarkers, oil-source correlation, the 7th member of Yanchang Formation, Triassic, Huanxian area, Ordos Basin

CLC Number:

TE122.2

LI Tao, MA Guofu, ZHAO Leyi, YUAN Li, MA Qilin, XIE Jingyu, ZHANG Bo, LI Henan. Characteristics and oil-source correlation of Triassic Chang 7 member source rocks in Huanxian area, Ordos Basin[J].Lithologic Reservoirs, 2026, 38(2): 134-144.

Figures/Tables 11

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Fig. 6

Fig. 7

Fig. 8

Fig. 9

Table 1

Fig. 10

References 34

[1]	杨华, 张文正. 论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用:地质地球化学特征[J]. 地球化学, 2005, 34(2):147-154.
	YANG Hua, ZHANG Wenzheng. Leading effect of the seventh member high-quality source rock of Yanchang Formation in Ordos Basin during the enrichment of low-penetrating oil-gas accumulation:Geology and geochemistry[J]. Geochimica, 2005, 34(2):147-154.
[2]	王子昕, 柳广弟, 袁光杰, 等. 鄂尔多斯盆地庆城地区三叠系长7段烃源岩特征及控藏作用[J]. 岩性油气藏, 2024, 36(5):133-144. doi: 10.12108/yxyqc.20240513
	WANG Zixin, LIU Guangdi, YUAN Guangjie, et al. Characteri-stics and reservoir control of source rocks of Triassic Chang 7 member in Qingcheng area,Ordos Basin[J]. Lithologic Reservoirs, 2024, 36(5):133-144. doi: 10.12108/yxyqc.20240513
[3]	张文正, 杨华, 李剑锋, 等. 论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用:强生排烃特征及机理分析[J]. 石油勘探与开发, 2006, 33(3):289-293.
	ZHANG Wenzheng, YANG Hua, LI Jianfeng, et al. Leading effect of high class source rock of Chang 7 in Ordos Basin on enri-chment of low permeability oil-gas accumulation:Hydrocarbon generation and expulsion mechanism[J]. Petroleum Exploration and Development, 2006, 33(3):289-293.
[4]	贾承造, 姜林, 赵文. 全油气系统中的致密油气:成藏机理、富集规律与资源前景[J]. 石油学报, 2025, 46(1):1-16. doi: 10.7623/syxb202501001
	JIA Chengzao, JIANG Lin, ZHAO Wen. Tight oil and gas in whole petroleum system:Accumulation mechanism,enrichment regularity,and resource prospect[J]. Acta Petrolei Sinica, 2025, 46(1):1-16. doi: 10.7623/syxb202501001
[5]	贾承造, 庞雄奇, 郭秋麟, 等. 基于成因法评价油气资源:全油气系统理论和新一代盆地模拟技术[J]. 石油学报, 2023, 44(9):1399-1416. doi: 10.7623/syxb202309001
	JIA Chengzao, PANG Xiongqi, GUO Qiulin, et al. Assessment of oil-gas resources based on genetic method:Whole petroleum system theory and new generation basin modeling technology[J]. Acta Petrolei Sinica, 2023, 44(9):1399-1416. doi: 10.7623/syxb202309001
[6]	杨华, 张文正, 彭平安, 等. 鄂尔多斯盆地中生界湖相油型油的精细划分与油源对比[J]. 地球科学与环境学报, 2016, 38(2):196-205.
	YANG Hua, ZHANG Wenzheng, PENG Ping’an, et al. Oil detailed classification and oil-source correlation of Mesozoic lacustrine oil in Ordos Basin[J]. Journal of Earth Sciences and Environment, 2016, 38(2):196-205.
[7]	赵阳, 姚泾利, 段毅, 等. 鄂尔多斯盆地陇东地区长9油层组油源分析[J]. 沉积学报, 2015, 33(5):1023-1032.
	ZHAO Yang, YAO Jingli, DUAN Yi, et al. Oil-source analysis for Chang-9 subsection (Upper Triassic) of eastern Gansu Pro-vince in Ordos Basin[J]. Acta Sedimentologica Sinica, 2015, 33(5):1023-1032.
[8]	段毅, 吴保祥, 张辉, 等. 鄂尔多斯盆地西峰油田原油地球化学特征及其成因[J]. 地质学报, 2006, 80(2):301-310.
	DUAN Yi, WU Baoxiang, ZHANG Hui, et al. Geochemistry and genesis of crude oils of the Xifeng Oilfield in the Ordos Basin[J] Acta Geologica Sinica, 2006, 80(2):301-310.
[9]	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.
[10]	邓秀芹, 蔺昉晓, 刘显阳, 等. 鄂尔多斯三叠系延长组沉积演化及其与早印支运动关系的探讨[J]. 古地理学报, 2008, 10(2):159-166..
	DENG Xiuqin, LIN Fangxiao, LIU Xianyang, et al. Discussion on relationship between sedimentary evolution of the Triassic Yanchang Formation and the Early Indosinian Movement in Ordos Basin[J]. Journal of Palaeogeography(Chinese Edition), 2008, 10(2):159-166.
[11]	卢进才, 李玉宏, 魏仙样, 等. 鄂尔多斯盆地三叠系延长组长7油层组油页岩沉积环境与资源潜力研究[J]. 吉林大学学报(地球科学版), 2006, 36(6):928-932.
	LU Jincai, LI Yuhong, WEI Xianyang, et al. Research on the depositional environment and resources potential of the oil shale in the Chang 7 member,Triassic Yanchang Formation in the Ordos Basin[J]. Journal of Jilin University (Earth Science Edition), 2006, 36(6):928-932.
[12]	梁锋, 曹哲. 鄂尔多斯盆地华池地区三叠系长7页岩油储层特征、形成环境及富集模式[J]. 岩性油气藏, 2025, 37(1):24-40. doi: 10.12108/yxyqc.20250103
	LIANG Feng, CAO Zhe. Characteristics,formation environment and enrichment model of Triassic Chang 7 shale oil reservoir in Huachi area,Ordos Basin[J]. Lithologic Reservoirs, 2025, 37(1):24-40. doi: 10.12108/yxyqc.20250103
[13]	薛楠, 邵晓州, 朱光有, 等. 鄂尔多斯盆地平凉北地区三叠系长7段烃源岩地球化学特征及形成环境[J]. 岩性油气藏, 2023, 35(3):51-65. doi: 10.12108/yxyqc.20230305
	XUE Nan, SHAO Xiaozhou, ZHU Guangyou, et al. Geochemical characteristics and formation environment of source rocks of Triassic Chang 7 member in northern Pingliang area,Ordos Basin[J]. Lithologic Reservoirs, 2023, 35(3):51-65. doi: 10.12108/yxyqc.20230305
[14]	张文正, 杨华, 杨奕华, 等. 鄂尔多斯盆地长7优质烃源岩的岩石学、元素地球化学特征及发育环境[J]. 地球化学, 2008, 37(1):59-64.
	ZHANG Wenzheng, YANG Hua, YANG Yihua, et al. Petrology and element geochemistry and development environment of Yanchang Formation Chang-7 high quality source rocks in Ordos Basin[J]. Geochimica, 2008, 37(1):59-64.
[15]	肖威, 张兵, 姚永君, 等. 川东二叠系龙潭组页岩岩相特征与沉积环境[J]. 岩性油气藏, 2022, 34(2):152-162. doi: 10.12108/yxyqc.20220214
	XIAO Wei, ZHANG Bing, YAO Yongjun, et al. Lithofacies and sedimentary environment of shale of Permian Longtan Formation in eastern Sichuan Basin[J]. Lithologic Reservoirs, 2022, 34(2):152-162. doi: 10.12108/yxyqc.20220214
[16]	潘李辉. 鄂尔多斯盆地上三叠统长7₃生油岩系中的凝灰岩类特征研究[D]. 西安: 西北大学, 2018.
	PAN Lihui. Study on the characteristics of tuff types in the Chang 7₃ oil-bearing rocks,the Upper Triassic,Ordos Basin[D]. Xi’an: Northwest University, 2018.
[17]	李国雄, 刘成林, 王飞龙, 等. 渤海湾盆地渤中凹陷东营组烃源岩地球化学特征及生烃模式[J]. 石油学报, 2022, 43(11):1568-1584. doi: 10.7623/syxb202211005
	LI Guoxiong, LIU Chenglin, WANG Feilong, et al. Geochemical characteristics and hydrocarbon generation mode of source rocks of Dongying Formation in Bozhong sag,Bohai Bay Basin[J]. Acta Petrolei Sinica, 2022, 43(11):1568-1584. doi: 10.7623/syxb202211005
[18]	王万春, 徐永昌, Manfred Schidlowski, 等. 不同沉积环境及成熟度干酪根的碳氢同位素地球化学特征[J]. 沉积学报, 1997, 15(增刊1):133-137.
	WANG Wanchun, XU Yongchang, SCHIDLOWSKI M, et al. The geochemical characteristics of carbon and hydrogen isotopes of kerogens of various maturity and depositional environments[J]. Acta Sedimentologica Sinica, 1997, 15(Suppl 1):133-137.
[19]	黄第藩, 李晋超, 张大江. 干酪根的类型及其分类参数的有效性、局限性和相关性[J]. 沉积学报, 1984, 2(3):21-36.
	HUANG Difan, LI Jinchao, ZHANG Dajiang. Kerogen types and study on effectiveness,limitation and interrelation of their identification parameters[J]. Acta Sedimentologica Sinica, 1984, 2(3):21-36.
[20]	成海燕, 李安龙, 龚建明. 陆相烃源岩评价参数浅析[J]. 海洋地质动态, 2008, 24(2):6-10.
	CHENG Haiyan, LI Anlong, GONG Jianming. Analysis on evaluation parameters of continental source rocks[J]. Marine Geology Letters, 2008, 24(2):6-10.
[21]	吉利明, 吴涛, 李林涛. 鄂尔多斯盆地西峰地区延长组烃源岩干酪根地球化学特征[J]. 石油勘探与开发, 2007, 34(4):424-428.
	JI Liming, WU Tao, LI Lintao. Geochemical characteristics of kerogen in Yanchang Formation source rocks,Xifeng area,Ordos Basin[J]. Petroleum Exploration and Development, 2007, 34(4):424-428.
[22]	李艳红, 金奎励. 烃源岩成熟度评价指标及选取[J]. 地质地球化学, 2000, 28(2):94-96.
	LI Yanhong, JIN Kuili. Evaluation indices for maturity of hydrocarbon-source rocks[J]. Geology—Geochemistry, 2000, 28(2):94-96.
[23]	黄彦杰, 白玉彬, 孙兵华, 等. 鄂尔多斯盆地富县地区延长组长7烃源岩特征及评价[J]. 岩性油气藏, 2020, 32(1):66-75. doi: 10.12108/yxyqc.20200107
	HUANG Yanjie, BAI Yubin, SUN Binghua, et al. Characteristics and evaluation of Chang 7 source rock of Yanchang Formation in Fuxian area,Ordos Basin[J]. Lithologic Reservoirs, 2020, 32(1):66-75. doi: 10.12108/yxyqc.20200107
[24]	陈建平, 孙永革, 钟宁宁, 等. 地质条件下湖相烃源岩生排烃效率与模式[J]. 地质学报, 2014, 88(11):2005-2032.
	CHEN Jianping, SUN Yongge, ZHONG Ningning, et al. The efficiency and model of petroleum expulsion from the lacustrine source rocks within geological frame[J]. Acta Geologica Sinica, 2014, 88(11):2005-2032.
[25]	黄彦杰, 耿继坤, 白玉彬, 等. 鄂尔多斯盆地富县地区延长组长6、长7段原油地球化学特征及油源对比[J]. 石油实验地质, 2020, 42(2):281-288.
	HUANG Yanjie, GENG Jikun, BAI Yubin, et al. Geochemical characteristics and oil-source correlation of crude oils in 6th and 7th members of Yanchang Formation,Fuxian area,Ordos Basin[J]. Petroleum Geology & Experiment, 2020, 42(2):281-288.
[26]	王龙, 陈培元, 孙福亭, 等. 鄂尔多斯盆地彭阳地区延长组、延安组原油地球化学特征与油源对比[J]. 海洋地质前沿, 2019, 35(12):49-55.
	WANG Long, CHEN Peiyuan, SUN Futing, et al. Geochemical characteristics of crude oil from Yanchang and Yan’an Formations in Pengyang area of Ordos Basin and their implications for oil-source[J]. Marine Geology Frontiers, 2019, 35(12):49-55.
[27]	马立元, 尹航, 陈纯芳, 等. 鄂尔多斯盆地红河油田原油地球化学特征及油源分析[J]. 沉积学报, 2015, 33(2):416-425.
	MA Liyuan, YIN Hang, CHEN Chunfang, et al. Research of geochemistry characteristics and source of crude oils from the Honghe Oilfield in the Ordos Basin[J]. Acta Sedimentologica Sinica, 2015, 33(2):416-425.
[28]	张文正, 杨华, 候林慧, 等. 鄂尔多斯盆地延长组不同烃源岩17α(H)-重排藿烷的分布及其地质意义[J]. 中国科学(D辑), 2009, 39(10):1438-1445.
	ZHANG Wenzheng, YANG Hua, HOU Linhui, et al. Distribution and geological significance of 17α(H)-diahopanes from different hydrocarbon source rocks of Yanchang Formation in Ordos Basin[J]. Science in China (Series D), 2009, 39(10):1438-1445.
[29]	邹贤利, 陈世加, 路俊刚, 等. 鄂尔多斯盆地延长组烃源岩17α(H)-重排藿烷的组成及分布研究[J]. 地球化学, 2017, 46(3):252-261.
	ZOU Xianli, CHEN Shijia, LU Jungang, et al. Composition and distribution of 17α(H)-diahopane in the Yanchang Formation source rocks,Ordos Basin[J]. Geochimica, 2017, 46(3):252-261.
[30]	白青林, 杨少春, 马芸, 等. 鄂尔多斯盆地西南缘长8段油源多元精细对比[J]. 断块油气田, 2018, 25(6):689-694.
	BAI Qinglin, YANG Shaochun, MA Yun, et al. Oil-source rock fine multiple correlation of Chang 8 section in southwest of Ordos Basin[J]. Fault-Block Oil & Gas Field, 2018, 25(6):689-694.
[31]	柳广弟, 杨伟伟, 冯渊, 等. 鄂尔多斯盆地陇东地区延长组原油地球化学特征及成因类型划分[J]. 地学前缘, 2013, 20(2):108-115.
	LIU Guangdi, YANG Weiwei, FENG Yuan, et al. Geochemical characteristics and genetic types of crude oil from Yanchang Formation in Longdong area,Ordos Basin[J]. Earth Science Frontiers, 2013, 20(2):108-115.
[32]	何雁兵, 傅强, 金艳, 等. 鄂尔多斯盆地英旺地区长9、长10油层组油源及成藏分析[J]. 岩性油气藏, 2012, 24(5):55-60.
	HE Yanbing, FU Qiang, JIN Yan, et al. Oil sources and accumulation analysis of Chang 9 and Chang 10 oil reservoir set in Yingwang area,Ordos Basin[J]. Lithologic Reservoirs, 2012, 24(5):55-60.
[33]	肖文华, 杨军, 严宝年, 等. 鄂尔多斯盆地环庆地区三叠系长8致密砂岩储层特征及成藏主控因素[J]. 岩性油气藏, 2025, 37(3):23-32. doi: 10.12108/yxyqc.20250303
	XIAO Wenhua, YANG Jun, YAN Baonian, et al. Characteristics and main controlling factors of Triassic Chang 8 tight sandstone reservoir in Huanqing area,Ordos Basin[J]. Lithologic Reservoirs, 2025, 37(3):23-32. doi: 10.12108/yxyqc.20250303
[34]	姚泾利, 高岗, 庞锦莲, 等. 鄂尔多斯盆地陇东地区延长组非主力有效烃源岩发育特征[J]. 地学前缘, 2013, 20(2):116-124.
	YAO Jingli, GAO Gang, PANG Jinlian, et al. Development characteristics of non-main effective source rocks of the Yanchang Formation in eastern Gansu Province of Ordos Basin[J]. Earth Science Frontiers, 2013, 20(2):116-124.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

Comments

Recommended 0

No Suggested Reading articles found!

TRENDMD:

样品类型		区域	井号	层位	沉积环境指数（DEI）
烃源岩	页岩	东部	H102	长7₃	0.085
	泥岩	东部	H102	长7₂	0.120
	泥岩	西部	H804	长7₃	0.065
	泥岩	西部	H82	长7₂	0.033
原油		东部	H12	长8	0.083
		西部	H92	长8	0.079
		西部	H94	长8	0.072

Characteristics and oil-source correlation of Triassic Chang 7 member source rocks in Huanxian area, Ordos Basin

RichHTML

PDF (PC)

Abstract

Cite this article

share this article

Figures/Tables 11

References 34

Related Articles 15

Metrics

Comments

Recommended 0

[1]	HUANG Li, ZHAO Longmei, CHEN Dong, ZHAO Haoyang, ZHANG Yixin, SHI Shi, ZHANG Wen, JI Liang. Characteristics and exploration potential of coal rock gas reservoirs in Carboniferous-Permian in Yichuan area, Ordos Basin [J]. Lithologic Reservoirs, 2026, 38(5): 40-50.
[2]	QING Chun, WU Xueyan, TANG Song, LIU Bowen, GAN Wenjie, YU Yan, LIANG Xinyu, LIAO Yue. Sedimentary characteristics and favorable reservoirs distribution of the first member of Leikoupo Formation in Middle Triassic， central Sichuan Basin [J]. Lithologic Reservoirs, 2026, 38(5): 71-82.
[3]	LI Suhua, XIAO Bin. Seismic identification and favorable exploration zones of thin interbedded dolomite reservoirs in the fourth member of Triassic Jialingjiang Formation, southwestern Sichuan Basin [J]. Lithologic Reservoirs, 2026, 38(5): 83-93.
[4]	ZHANG Weigang, LIU Guanglin, WANG Yong, NING Fan, MA Shaohui, YAN Baiquan. Reservoir characteristics and main controlling factors of interlayered shale oil in Triassic Chang 7 member of Tiebiancheng area， Ordos Basin [J]. Lithologic Reservoirs, 2026, 38(5): 94-103.
[5]	CHEN Yumao, LI Bin, LIU Haojie, YANG Hongwei, GAI Shanshan, HOU Qingjie, DENG Taiyu. Simulation experiment on shale oil micro-migration of upper submember of the fourth member of Shahejie Formation in Paleogene of Minfeng Subsag, Dongying Sag [J]. Lithologic Reservoirs, 2026, 38(5): 104-114.
[6]	FAN Yujie, WAN Yongping, PU Renhai, SHE Yinnan, CUI Hongjun, GAO Xiaoping. Sedimentary characteristics and exploration potential of the large-scale channel belt in Shan₂³ submember of Yan’an-Ganquan area, Ordos Basin [J]. Lithologic Reservoirs, 2026, 38(5): 125-135.
[7]	CAI Junjie, LI Yaqi, GAO Zhongliang, JIANG Fujie, JIANG Dapeng, NIU Peng, HAO Mianzhu. Evaluation of fault sealing and trap effectiveness of Kaiping Sag, Pearl River Mouth Basin [J]. Lithologic Reservoirs, 2026, 38(5): 149-158.
[8]	ZHAO Sen, CHEN Sheng, LI Xinyu, DU Wenhui, WANG Xiujiao, YANG Hao, LI Yandong, DAI Chunmeng. Intelligent seismic prediction method for porosity of coal rock gas reservoirs based on hybrid random forest: A case study of Carboniferous Benxi Formation 8# coal in northern Mizhi area, Ordos Basin [J]. Lithologic Reservoirs, 2026, 38(5): 159-169.
[9]	SHEN Chen, SUN Yu, ZHANG Yujie, ZHU Qingli, HUO Fei, CAO Weidong, LIU Xiaoliang, SHEN Yuniang. Origin and genesis of formation water in shale oil reservoirs of Paleogene Shahejie Formation in Lijin sub-depression, Dongying Sag [J]. Lithologic Reservoirs, 2026, 38(5): 179-190.
[10]	LI Xinze, WU Hao, CHAO Jiahao, LI Na, WANG Suran, BAI Yuhu, FENG Ruyong, CHENG Jialu. Prediction method for coalbed methane deliverability of Permian Taiyuan Formation in Shenfu block, Ordos Basin [J]. Lithologic Reservoirs, 2026, 38(5): 191-200.
[11]	ZHANG Yuqing, ZHAO Zhongxiang, WANG Wei, HE Youbin, LUO Jinxiong, HU Mingyi, YANG Xingyu, WU Lianhua. Sedimentary characteristics and controlling factors of carbonate-evaporite rocks in Triassic Jialingjiang Formation, southeastern Sichuan Basin [J]. Lithologic Reservoirs, 2026, 38(4): 101-114.
[12]	YANG Weiqiang, LI Zhongchao, ZHANG Jixi, WANG Yi, ZHAO Zhen. Restoration and geological implications of paleogeomorphology during the depositional period of Triassic Feixianguan Formation in Puguang area, northeastern Sichuan Basin [J]. Lithologic Reservoirs, 2026, 38(4): 137-147.
[13]	XU Zhongfan, DING Xiong, YIN Hong, TIAN Yunying, SONG Yi, YANG Xiran. Reservoir characteristics and main controlling factors of Upper Triassic Xujiahe Formation in Shuangyushi area, northwestern Sichuan Basin [J]. Lithologic Reservoirs, 2026, 38(3): 107-119.
[14]	CAO Libin, ZHENG Majia, CHEN Qian, WU Ya, CHENG Limin. GPU-accelerated source scanning algorithm for real-time 3D microseismic monitoring and its application [J]. Lithologic Reservoirs, 2026, 38(3): 132-140.
[15]	BAI Yiyuan, GONG Hujun, WANG Dongxu, LI Yuan, LUO Fenhong, WANG Junjun. Distribution characteristics and controlling factors of helium in Yanchang exploration area of Ordos Basin [J]. Lithologic Reservoirs, 2026, 38(3): 149-161.