Characteristics and exploration directions of inner gas source from the middle assemblage of Ordovician in Ordos Basin

doi:10.7623/syxb201908002

Acta Petrolei Sinica ›› 2019, Vol. 40 ›› Issue (8): 900-913.DOI: 10.7623/syxb201908002

• Petroleum Exploration • Previous Articles Next Articles

Characteristics and exploration directions of inner gas source from the middle assemblage of Ordovician in Ordos Basin

Xu Wanglin¹, Hu Suyun¹, Li Ningxi¹, Wei Xinshan², Gao Jianrong¹, Zhao Zhenyu¹, Li Xiangbo³, Liu Junbang¹, Zhang Yueqiao¹, Song Wei¹

1. PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China;
2. Research Institute of Exploration and Development, PetroChina Changqing Oilfield Company, Shaanxi Xi'an 710018, China;
3. PetroChina Research Institute of Petroleum Exploration & Development-Northwest, Gansu Lanzhou 730020, China

Received:2019-01-06 Revised:2019-04-17 Online:2019-08-25 Published:2019-08-28

鄂尔多斯盆地奥陶系中组合内幕气源特征及勘探方向

徐旺林¹, 胡素云¹, 李宁熙¹, 魏新善², 高建荣¹, 赵振宇¹, 李相博³, 刘俊榜¹, 张月巧¹, 宋微¹

1. 中国石油勘探开发研究院北京 100083;
2. 中国石油长庆油田公司勘探开发研究院陕西西安 710018;
3. 中国石油勘探开发研究院西北分院甘肃兰州 730020

通讯作者: 徐旺林,男,1970年6月生,1994年获石油大学(华东)学士学位,2006年获中国石油大学(北京)地质资源与地质工程专业博士学位,现为中国石油勘探开发研究院一级工程师,主要从事综合地质研究及地震解释工作。Email:wlxu@petrochina.com.cn
作者简介:徐旺林,男,1970年6月生,1994年获石油大学(华东)学士学位,2006年获中国石油大学(北京)地质资源与地质工程专业博士学位,现为中国石油勘探开发研究院一级工程师,主要从事综合地质研究及地震解释工作。Email:wlxu@petrochina.com.cn
基金资助:
国家科技重大专项"下古生界—前寒武系碳酸盐岩油气成藏规律、关键技术及目标评价"（2016ZX05004）和中国石油天然气股份有限公司重大科技专项"低/特低渗透油藏有效开发技术研究——长庆油田油气当量上产5000万吨关键技术研究"（2011E-1301）资助。

Abstract

Abstract:

Majiagou Formation of the Lower Paleozoic in Ordos Basin is divided into three assemblages by the degree of exploration:the upper, middle and lower assemblage, respectively corresponding to the 1-4 sub-members of the 5th Member of Majiagou Formation(the upper assemblage), the 5-10 sub-members of the 5th Member of Majiagou Formation(the middle assemblage) and the 4th to the 1st Member of Majiagou Formation(the bottom assemblage). To explore the characteristics of natural gas source in the middle assemblage, this study carries out natural gas genetic identification, source rock evaluation and researches on the natural gas components, isotopes and fluid inclusions, as well as a comparative analysis with natural gas in the Upper Paleozoic and Ordovician weathering crust. The results show that:(1) In terms of composition characteristics and isotopic characteristics, the inner-type natural gas in the middle assemblage of Ordovician is different from the natural gas in the Upper Paleozoic Carboniferous-Permian and weathering crust. Through identifying based on the natural gas component data and previous experimental plates, it is believed that crude oil cracking gas exists in the internally-developed natural gas from the Ordovician middle assemblage. (2) The bitumen internally developed in the Ordovician is the thermal cracking product of liquid hydrocarbons formed in the inner source rocks. (3) Controlled by the tidal flat sedimentary system, the typical source rock stratum of the middle assemblage (the 6th sub-member of the 5th Member of Majiagou Formation) can be divided into three facies belts:argillaceous dolomitic flat belt, gypsum-containing slope, and gypsum-salt depression. (4) Source rocks in the 6th sub-member of the 5th Member of Majiagou Formation are mainly distributed in the argillaceous dolomitic flat belt, with a cumulative thickness of 8-20 m; the organic matter abundance is up to 1.75%, and R_o is 1.9% -2.7%. In the stage of thermal cracking and generation, there is a potential for hydrocarbon supply in a large scale. (5) The argillaceous dolomitic flat belt and gypsum-containing slope indicate the favorable exploration direction, and the eastern part of Wushenqi, northwest of Jingbian and Wuqi-Zhitan area are three favorable exploration zones.

Key words: Ordos Basin, Ordovician, gypsum-salt rock, hydrocarbon source rock, natural gas isotope, crude oil cracking gas

摘要：

鄂尔多斯盆地下古生界马家沟组按照勘探程度划分为上、中、下3个组合，分别为马家沟组五段1-4小层（上组合）、马家沟组五段5-10小层（中组合）和马家沟组四段-马家沟组一段（下组合）。为探索中组合内幕天然气气源特征，开展了天然气组分、同位素、流体包裹体、天然气成因识别及烃源岩评价等研究工作，并与研究区上古生界及奥陶系风化壳的天然气开展比较分析。研究结果表明：①奥陶系中组合内幕天然气在组分特征、同位素特征等方面与上古生界石炭系-二叠系及风化壳天然气存在差异；利用天然气组分数据，结合前人实验图版判识，认为奥陶系中组合内幕天然气中存在原油裂解气。②奥陶系中组合内幕发育沥青，是内幕烃源岩生成液态烃热裂解产物。③受潮坪环境沉积体系控制，中组合典型烃源岩层段（马家沟组五段6小层）可以划分为泥云坪环带、含膏盐缓坡、膏盐岩洼地3个相带。④马家沟组五段6小层烃源岩主要分布在泥云坪环带，累积厚度可达8~20 m，有机碳含量最高达1.75%，R_o为1.9%~2.7%，处于热裂解生气阶段，具备规模供烃潜力。⑤泥云坪环带和含膏盐缓坡是有利勘探方向，乌审旗东部、靖边西北部和吴起-志丹地区是3个有利勘探区带。

关键词: 鄂尔多斯盆地, 奥陶系, 膏盐岩, 烃源岩, 天然气同位素, 原油裂解气

CLC Number:

TE122.2

Xu Wanglin, Hu Suyun, Li Ningxi, Wei Xinshan, Gao Jianrong, Zhao Zhenyu, Li Xiangbo, Liu Junbang, Zhang Yueqiao, Song Wei. Characteristics and exploration directions of inner gas source from the middle assemblage of Ordovician in Ordos Basin[J]. Acta Petrolei Sinica, 2019, 40(8): 900-913.

徐旺林, 胡素云, 李宁熙, 魏新善, 高建荣, 赵振宇, 李相博, 刘俊榜, 张月巧, 宋微. 鄂尔多斯盆地奥陶系中组合内幕气源特征及勘探方向[J]. 石油学报, 2019, 40(8): 900-913.

References

[1] 付金华,魏新善,任军峰,等.鄂尔多斯盆地天然气勘探形势与发展前景[J].石油学报,2006,27(6):1-4.
FU Jinhua,WEI Xinshan,REN Junfeng,et al.Gas exploration and developing prospect in Ordos Basin[J].Acta Petrolei Sinica,2006,27(6):1-4.
[2] 杨华,付金华,魏新善,等.鄂尔多斯盆地奥陶系海相碳酸盐岩天然气勘探领域[J].石油学报,2011,32(5):733-740.
YANG hua,FU Jinhua,WEI Xinshan,et al.Natural gas exploration domains in Ordovician marine carbonates,Ordos Basin[J].Acta Petrolei Sinica,2011,32(5):733-740.
[3] 戴金星,李剑,罗霞,等.鄂尔多斯盆地大气田的烷烃气碳同位素组成特征及其气源对比[J].石油学报,2005,26(1):18-26.
DAI Jinxing,LI Jian,LUO Xia,et al.Alkane carbon isotopic composition and gas source in giant gas fields of Ordos Basin[J].Acta Petrolei Sinica,2005,26(1):18-26.
[4] 杨华,张文正,昝川莉,等.鄂尔多斯盆地东部奥陶系盐下天然气地球化学特征及其对靖边气田气源再认识[J].天然气地球科学,2009,20(1):8-14.
YANG Hua,ZHANG Wenzheng,ZAN Chuanli,et al.Geochemical characteristics of Ordovician subsalt gas reservoir and their significance for Reunderstanding the gas source of Jingbian gasfield,East Ordos Basin[J].Natural Gas Geoscience,2009,20(1):8-14.
[5] 张文正,李剑峰.鄂尔多斯盆地油气源研究[J].中国石油勘探,2001,6(4):28-36.
ZHANG Wenzheng,LI Jianfeng.Study on oil and gas source in Ordos Basin[J].China Petroleum Exploration,2001, 6(4):28-36.
[6] 夏新宇,赵林,戴金星.长庆气田奥陶系风化壳气藏中油型气成分的来源[J].石油勘探与开发,1999,26(4):22-24.
XIA Xinyu,ZHAO Lin,DAI Jinxing.Main source rock of oil type components in natural gas from Ordovician weathering crust,Changqing gas field[J].Petroleum Exploration and Development,1999,26(4):22-24.
[7] 陈安定.论鄂尔多斯盆地中部气田混合气的实质[J].石油勘探与开发,2002,29(2):33-38.
CHEN Anding.Feature of mixed gas in central gas field of Ordos Basin[J].Petroleum Exploration and Development,2002,29(2):33-38.
[8] 米敬奎,王晓梅,朱光有,等.利用包裹体中气体地球化学特征与源岩生气模拟实验探讨鄂尔多斯盆地靖边气田天然气来源[J].岩石学报,2012,28(3):859-869.
MI Jingkui,WANG Xiaomei,ZHU Guangyou,et al.Origin determination of gas from Jingbian gas field in Ordos Basin collective through the geochemistry of gas from inclusions and source rock pyrolysis[J].Acta Petrologica Sinica,2012,28(3):859-869.
[9] 李贤庆,胡国艺,张爱云,等.鄂尔多斯中部气田下古生界天然气的气源研究[J].现代地质,2002,16(2):191-198.
LI Xianqing,HU Guoyi,ZHANG Aiyun,et al.The sources of lower paleozoic natural gases in central gas field in Erdos[J].Geoscience,2002,16(2):191-198.
[10] 夏新宇,赵林,戴金星,等.鄂尔多斯盆地中部气田奥陶系风化壳气藏天然气来源及混源比计算[J].沉积学报, 1998,16(3):75-79.
XIA Xinyu,ZHAO Lin,DAI Jinxing,et al.Gas sources and mixing ratio of Ordovician weathering crust reservoir of central gas field in Ordos Basin[J].Acta Sedimentologica Sinica,1998,16(3):75-79.
[11] 刘德汉,付金华,郑聪斌,等.鄂尔多斯盆地奥陶系海相碳酸盐岩生烃性能与中部长庆气田气源成因研究[J].地质学报,2004,78(4):542-550.
LIU Dehan,FU Jinhua,ZHENG Congbin,et al.Research on hydrocarbon generation of Ordovician marine carbonatite of the Ordos Basin and genesis of Changqing gas fields[J].Acta Geologica Sinica,2004,78(4):542-550.
[12] 陈安定.陕甘宁盆地中部气田奥陶系天然气的成因及运移[J].石油学报,1994,15(2):1-10.
CHEN Anding.Origin and migration of natural gas in Ordovician reservoir in Shan Gan Ning Basin central gas field[J].Acta Petrolei Sinica,1994,15(2):33-38.
[13] 黄第藩,熊传武,杨俊杰,等.鄂尔多斯盆地中部气田气源判识和天然气成因类型[J].天然气工业,1996,16(6):1-6.
HUANG Difan,XIONG Chuanwu,YANG Junjie,et al.Gas source discrimination and natural gas genetic types of central gas field in E'erduosi Basin[J].Natural Gas Industry,1996,16(6):1-6.
[14] 李贤庆,侯读杰,胡国艺,等.鄂尔多斯盆地中部地区下古生界碳酸盐岩生烃潜力探讨[J].矿物岩石地球化学通报,2002,21(3):152-157.
LI Xianqing,HOU Dujie,HU Guoyi,et al.The discussion on hydrocarbon-generated potential of lower Paleozoic carbonates in the central part of Erdos Basin[J].Bulletin of Mineralogy,Petrology and Geochemistry,2002,21(3):152-157.
[15] 蒋助生,胡国艺,李志生,等.鄂尔多斯盆地古生界气源对比新探索[J].沉积学报,1999,17(增刊1):820-824.
JIANG Zhusheng,HU Guoyi,LI Zhisheng,et al.The novel approach of the correlation between Paleozoic natural gas and source rock in Ordos Basin[J].Acta Sedimentologica Sinica,1999,17(S1):820-824.
[16] 胡素云,石书缘,王铜山,等.膏盐环境对碳酸盐岩层系成烃、成储和成藏的影响[J].中国石油勘探,2016,21(2):20-27.
HU Suyun,SHI Shuyuan,WANG Tongshan,et al.Effect of gypsum-salt environment on hydrocarbon generation,reservoir-forming and hydrocarbon accumulation in carbonate strata[J].China Petroleum Exploration,2016,21(2):20-27.
[17] 魏新善,任军峰,赵俊兴,等.鄂尔多斯盆地东部奥陶系风化壳古地貌特征嬗变及地质意义[J].石油学报,2017,38(9):999-1009.
WEI Xinshan,REN Junfeng,ZHAO Junxing,et al.Paleo-geomorphologic characteristic evolution and geological significance of the Ordovician weathering crust in eastern Ordos Basin[J].Acta Petrolei Sinica,2017,38(9):999-1009.
[18] 庞雄奇,陈君青,李素梅,等.塔里木盆地特大型海相油田原油来源——来自深部低TOC烃源岩的证据与相对贡献评价[J].石油学报,2018,39(1):23-41.
PANG Xiongqi,CHEN Junqing,LI Sumei,et al.Crude oil sources of giant marine oilfield in Tarim Basin:evidences and relative contribution evaluation of deep present-day low-TOC source rocks[J].Acta Petrolei Sinica,2018,39(1):23-41.
[19] 朱光有,杜德道,陈玮岩,等.塔里木盆地西南缘古老层系巨厚黑色泥岩的发现及勘探意义[J].石油学报, 2017,38(12):1335-1342.
ZHU Guangyou,DU Dedao,CHEN Weiyan,et al.The discovery and exploration significance of the old thick black mudstones in the southwest margin of Tarim Basin[J].Acta Petrolei Sinica,2017,38(12):1335-1342.
[20] 王阳洋,陈践发,庞雄奇,等.塔中地区奥陶系油气充注特征及运移方向[J].石油学报,2018,39(1):54-68.
WANG Yangyang,CHEN Jianfa,PANG Xiongqi,et al.Ordovician hydrocarbon charging characteristics and migration direction in Tazhong area[J].Acta Petrolei Sinica,2018,39(1):54-68.
[21] 杨华,包洪平.鄂尔多斯盆地奥陶系中组合成藏特征及勘探启示[J].天然气工业,2011,31(12):11-20.
YANG Hua,BAO Hongping.Characteristics of hydrocarbon accumulation in the middle Ordovician assemblages and their significance for gas exploration in the Ordos Basin[J].Natural Gas Industry,2011,31(12):11-20.
[22] 姚泾利,包洪平,任军锋,等.鄂尔多斯盆地奥陶系盐下天然气勘探[J].中国石油勘探,2015,20(3):1-12.
YAO Jingli,BAO Hongping,REN Junfeng,et al.Exploration of Ordovician subsalt natural gas reservoirs in Ordos Basin[J].China Petroleum Exploration,2015,20(3):1-12.
[23] 朱光有,张水昌,梁英波,等.硫酸盐热化学还原反应对烃类的蚀变作用[J].石油学报,2005,26(5):48-52.
ZHU Guangyou,ZHANG Shuichang,LIANG Yingbo,et al.Alteration of thermochemical sulfate reduction to hydrocarbons[J].Acta Petrolei Sinica,2005,26(5):48-52.
[24] 戴金星.天然气中烷烃气碳同位素研究的意义[J].天然气工业,2011,31(12):1-6.
DAI Jinxing.Significance of the study on carbon isotopes of alkane gases[J].Natural Gas Industry,2011,31(12):1-6.
[25] 张士亚,郜建军,蒋泰然.利用甲、乙烷碳同位素判识天然气类型的一种新方法[M].北京:地质出版社,1998:45-58.
ZHANG Shiya,HAO Jianjun,JIANG Tairan.A new method distinguishing natural gas type with carbon isotopes from methane and ethane[M].Beijing:Geological Publishing House,1998:48-58.
[26] 韩中喜,李剑,垢艳侠,等.甲、乙烷碳同位素用于判识天然气成因类型的讨论[J].天然气地球科学,2016,27(4):665-671.
HAN Zhongxi,LI Jian,GOU Yanxia,et al.The application of methane and ethane carbon isotopes as an identification index for gas origin study[J].Natural Gas Geoscience,2016,27(4):665-671.
[27] 陈孟晋,胡国艺.流体包裹体中气体碳同位素测定新方法及其应用[J].石油与天然气地质,2002,23(4):339-342.
CHEN Mengjin,HU Guoyi.A new method in assaying gas isotopes in fluid inclusion and the way of application[J].Oil & Gas Geology,2002,23(4):339-342.
[28] 米敬奎,戴金星,张水昌,等.鄂尔多斯盆地上古生界天然气藏储层包裹体中气体成分及同位素研究[J].中国科学 D辑:地球科学,2007,37(增刊2):97-103.
MI Jingkui,DAI Jinxing,ZHANG Shuichang,et al.The components and carbon isotope of the gases in inclusions in reservoir layers of Upper Paleozoic gas pools in the Ordos Basin,China[J].Science in China Series D:Earth Sciences,2008,51(S1):115-121.
[29] GRAHAM T.On the law of the diffusion of gases[J].Earth and Environmental Science Transactions of the Royal Society of Edinburgh,1834,12(1):222-258.
[30] 李艳霞.原油裂解气和干酪根裂解气的判识[J].西安石油大学学报:自然科学版,2008,23(6):42-45.
LI Yanxia.Identification of oil-cracking gas and kerogen-cracking gas[J].Journal of Xi'an Shiyou University:Natural Science Edition,2008,23(6):42-45.
[31] BEHAR F,KRESSMANN S,RUDKIEWICZ J L.Experimental simulation in a confined system and kinetic modelling of kerogen and oil cracking[J].Organic Geochemistry,1992,19(1/3):173-189.
[32] PRINZHOFER A A,HUC A Y.Genetic and post-genetic molecular and isotopic fractionations in natural gases[J].Chemical Geology,1995,126(3/4):281-290.
[33] 李剑,李志生,王晓波,等.多元天然气成因判识新指标及图版[J].石油勘探与开发,2017,44(4):503-512.
LI Jian,LI Zhisheng,WANG Xiaobo,et al.New indexes and charts for genesis identification of multiple natural gases[J].Petroleum Exploration and Development,2017,44(4):503-512.
[34] 傅家谟,贾蓉芬,刘德汉,等.碳酸岩有机地球化学——在石油、天然气、煤和层控矿床成因及评价中的应用[M].北京:科学出版社,1989.
FU Jiamo,JIA Rongfen,LIU Dehan,et al.Organic geochemistry of carbonate sediments:application in origin and evaluation of oil,gas,coal and strata-bound resources[M].Beijing:Science Press,1989.
[35] 吴征,杨元初,王新红.鄂尔多斯盆地下奥陶统原生-同层沥青分析[J].天然气工业,1999,19(6):14-17.
WU Zheng,YANG Yuanchu,WANG Xinhong.An analysis of the original coexisting bitumen in lower Ordovician in Eerduosi Basin[J].Natural Gas Industry,1999,19(6):14-17.
[36] 宁宁,陈孟晋,孙粉锦,等.鄂尔多斯盆地奥陶系风化壳古油藏的确定及其意义[J].石油与天然气地质,2007,28(2):280-286.
NING Ning,CHEN Mengjin,SUN Fenjin,et al.Determination and its significance of ancient oil pools in Ordovician weathering crust,Ordos Basin[J].Oil & Gas Geology, 2007,28(2):280-286.
[37] 张春林,孙粉锦,刘锐娥,等.鄂尔多斯盆地南部奥陶系沥青及古油藏生气潜力[J].石油勘探与开发,2010,37(6):668-673.
ZHANG Chunlin,SUN Fenjin,LIU Rui'e,et al.Bitumen and hydrocarbon generation potential of paleo-reservoirs in the Ordovician,South Ordos Basin[J].Petroleum Exploration and Development,2010,37(6):668-673.
[38] 张春林,庞雄奇,田世澄,等.鄂尔多斯盆地西部奥陶系古油藏油源对比与靖边气田气源[J].天然气地球科学, 2014,25(8):1242-1251.
ZHANG Chunlin,PANG Xiongqi,TIAN Shicheng,et al.Oil-source correlation of paleo-reservoir in Ordovician and the gas source of Jingbian gasfield,west Ordos Basin[J].Natural Gas Geoscience,2014,25(8):1242-1251.
[39] 张鼐,宋孚庆,王汇彤.石油中饱合烃类的喇曼特征[J].矿物岩石地球化学通报,2006,25(1):33-36.
ZHANG Nai,SONG Fuqing,WANG Huitong.The characteristics of Raman spectrometry for the saturated hydrocarbons in oil[J].Bulletin of Mineralogy,Petrology and Geochemistry,2006,25(1):33-36.
[40] 张鼐,田作基,毛光剑,等.沥青包裹体的拉曼光谱特征[J].地球化学,2009,38(2):174-178.
ZHANG Nai,TIAN Zuoji,MAO Guangjian.Raman spectroscopic characteristics of bitumen inclusions[J].Geochimica, 2009,38(2):174-178.
[41] 赵文智,王兆云,王红军,等.再论有机质"接力成气"的内涵与意义[J].石油勘探与开发,2011,38(2):129-135.
ZHAO Wenzhi,WANG Zhaoyun,WANG Hongjun,et al.Further discussion on the connotation and significance of the natural gas relaying generation model from organic materials[J].Petroleum Exploration and Development,2011,38(2):129-135.
[42] 涂建琪,董义国,张斌,等.鄂尔多斯盆地奥陶系马家沟组规模性有效烃源岩的发现及其地质意义[J].天然气工业,2016,36(5):15-24.
TU Jianqi,DONG Yiguo,ZHANG Bin,et al.Discovery of effective scale source rocks of the Ordovician Majiagou Fm in the Ordos Basin and its geological significance[J].Natural Gas Industry,2016,36(5):15-24.
[43] 姚泾利,王程程,陈娟萍,等.鄂尔多斯盆地马家沟组盐下碳酸盐岩烃源岩分布特征[J].天然气地球科学,2016,27(12):2115-2126.
YAO Jingli,WANG Chengcheng,CHEN Juanping,et al.Distribution characteristics of subsalt carbonate source rocks in Majiagou Formation,Ordos Basin[J].Natural Gas Geoscience,2016,27(12):2115-2126.
[44] 秦建中,刘宝泉,国建英,等.关于碳酸盐烃源岩的评价标准[J].石油实验地质,2004,26(2):281-286.
QIN Jianzhong,LIU Baoquan,GUO Jianying,et al.Discussion on the evaluation standards of carbonate source rocks[J].Petroleum Geology & Experiment,2004,26(2):281-286.

Characteristics and exploration directions of inner gas source from the middle assemblage of Ordovician in Ordos Basin

鄂尔多斯盆地奥陶系中组合内幕气源特征及勘探方向

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	Wan Yongping, Wang Zhenchuan, Qiao Yu, Han Shuangbiao, Ma Dong, Huang Jie, Bian Jiang, Liu Yu, Qiao Liang. Carbon isotope fractionation mechanism of deep coalbed methane in Yan’an gas field of Ordos Basin and its indication significance [J]. Acta Petrolei Sinica, 2026, 47(4): 791-813.
[2]	Hu Wenrui, Zhang Shuqi, Wang Fang. Theory and practice of origin-based oil exploration [J]. Acta Petrolei Sinica, 2026, 47(2): 311-320.
[3]	Zhao Zhe, Fan Liyong, Zhang Tao, Hui Jie. Resource endowments and future prospects of the Ordos Super Energy Basin [J]. Acta Petrolei Sinica, 2026, 47(1): 44-58.
[4]	Zhang Qin, Liu Yu, Qiu Zhen, Liu Wen, Kong Weiliang, Pang Zhenglian, Gao Wanli, Cai Guangyin, Li Xingtao, Lin Wenji. Phase analysis of shale gas occurrence based on carbon isotope fractionation and reservoir properties:a case study of the marine-terrestrial transitional shale in Member 2 of Shanxi Formation, Ordos Basin [J]. Acta Petrolei Sinica, 2025, 46(9): 1707-1719.
[5]	Bai Ying, Gao Jianrong, Zhao Zhenyu. Dolomite genesis of Ordovician Kelimoli Formation in western Ordos Basin [J]. Acta Petrolei Sinica, 2025, 46(8): 1517-1535,1627.
[6]	Wang Fuwei, Chen Dongxia, Jiang Mengya, Wanma Renzeng, Liu Chen, Wang Qiaochu, Wang Yuchao, Rong Lanxi, Wang Yuqi, Cheng Ming. Multi-scale migration mechanism,accumulation effect and enrichment mode of tight oil reservoir in the Member 7 of Yanchang Formation in Jiyuan area,Ordos Basin [J]. Acta Petrolei Sinica, 2025, 46(6): 1126-1143.
[7]	Hou Yuting, Yu Jian, Zhang Chunyu, Zhang Daofeng, Zhang Haifeng, Li Yong, He Zhitong, Yang Pu, Lin Dafei. Geological characteristics and exploration prospects of deep coalbed methane enriched in Carboniferous Benxi Formation,Ordos Basin [J]. Acta Petrolei Sinica, 2025, 46(5): 857-874.
[8]	Du Hao, Liu Yifeng, Fan Liyong, Ma Zhanrong, Luo Xiaorong, Shen Anjiang, Zeng Shuai. Genesis and evolution of overpressure in Lower Paleozoic Carbonate rocks of Ordos Basin [J]. Acta Petrolei Sinica, 2025, 46(5): 891-908.
[9]	Fan Jianming, Zhang Chao, Chang Rui, He You'an, Feng Liyong, Ren Yilin, Cao Peng, Guan Yun. Dynamic laws and stable production technology of Q ingcheng shale oil development in Ordos Basin [J]. Acta Petrolei Sinica, 2025, 46(4): 726-742.
[10]	Wang Youjing, Song Xinmin, Meng Fanle, Liang Yuxin, Jiang Tianhao. Dynamic fracture characteristics and controlling factors of ultra-low permeability reservoirs in Ordos Basin [J]. Acta Petrolei Sinica, 2025, 46(3): 588-598.
[11]	Niu Xiaobing, Hou Yunchao, Zhang Xiaolei, Xue Nan, Zhao Jing, Zhang Wenxuan, Long Shengfang, Liu Yongtao, Wang Shumin. Hydrocarbon accumulation conditions and key technologies of exploration and development of Hongde oilfield in southwestern Ordos Basin [J]. Acta Petrolei Sinica, 2025, 46(3): 633-648.
[12]	Chen Yiguo, Feng Congjun, Wei Dengfeng, Wang Chao, He Yonghong, Ge Yunjin, Li Xiaolu, Hao Shiyan, Fan Xiaowei, Wei Wenfang. Formation,distribution,and exploration strategies of tight oil in the Member 6 of Triassic Yanchang Formation in southeastern Ordos Basin [J]. Acta Petrolei Sinica, 2025, 46(2): 335-354.
[13]	Zhang Zhaohui, Zhang Jiaosheng, Liao Jianbo, Li Chao, Zou Jiandong, Zhang Wenting. Productivity prediction and exploration significance of tight sandstone reservoir in the Member 9 of Triassic Yanchang Formation in Jiyuan area,Ordos Basin [J]. Acta Petrolei Sinica, 2025, 46(11): 2091-2105.
[14]	Yang Zhi, Liu Xinshe, Wei Jiayi, Wang Hongwei, Yang Yajuan, Li Wei, Ma Zhanrong, Ren Junfeng, Yu Xiaolei, Wang Yongchao, Jiang Tao. Near-source exploration: Cretaceous hydrocarbon accumulation conditions and favorable areas for exploration breakthrough in Liupanshan Basin [J]. Acta Petrolei Sinica, 2025, 46(10): 1846-1860.
[15]	Xu Wanglin, Zhao Zhenyu, Hu Jianling, Shao Yan, Shi Yunhe, Zhang Yueqiao, Fang Xiang, Sun Yuanshi, Liu Yu. Co-evolution mechanism of macromolecular structure and pore structure in deep coal-rock:a case study of the Carboniferous Benxi Formation in Ordos Basin [J]. Acta Petrolei Sinica, 2025, 46(10): 1892-1905.