Logging isochronous stratigraphic division of shale based on characteristics of graptolite zones and its significance: a case study of Wufeng Formation-Longmaxi Formation in Sichuan Basin and its periphery

doi:10.7623/syxb202003002

Acta Petrolei Sinica ›› 2020, Vol. 41 ›› Issue (3): 273-283.DOI: 10.7623/syxb202003002

• Petroleum Exploration • Previous Articles Next Articles

Logging isochronous stratigraphic division of shale based on characteristics of graptolite zones and its significance: a case study of Wufeng Formation-Longmaxi Formation in Sichuan Basin and its periphery

Nie Haikuan^1,2,3, Li Donghui^1,2,3, Jiang Tao⁴, Yan Caina⁵, Du Wei^1,2,3, Zhang Guangrong⁵

1. State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 100083, China;
2. Sinopec Petroleum Exploration and Production Research Institute, Beijing 100083, China;
3. Sinopec Key Laboratory of Shale Oil/Gas Exploration & Production, Beijing 100083, China;
4. School of Earth and Space Sciences, Peking University, Beijing 100871, China;
5. School of Energy Resources, China University of Geosciences, Beijing 100083, China

Received:2019-01-22 Revised:2019-07-19 Online:2020-03-25 Published:2020-04-03

基于笔石带特征的页岩等时地层测井划分方法及意义——以四川盆地及其周缘五峰组—龙马溪组为例

聂海宽^1,2,3, 李东晖^1,2,3, 姜涛⁴, 颜彩娜⁵, 杜伟^1,2,3, 张光荣⁵

1. 页岩油气富集机理与有效开发国家重点实验室北京 100083;
2. 中国石油化工股份有限公司石油勘探开发研究院北京 100083;
3. 中国石油化工集团公司页岩油气勘探开发重点实验室北京 100083;
4. 北京大学地球与空间科学学院北京 100871;
5. 中国地质大学(北京)能源学院北京 100083

通讯作者: 聂海宽,男,1982年4月生,2005年获中国地质大学(北京)石油工程专业学士学位,2010年获中国地质大学(北京)矿产普查与勘探专业博士学位,现为中国石油化工股份有限公司石油勘探开发研究院研究员,主要从事非常规油气地质研究工作。Email:niehk.syky@sinopec.com
作者简介:聂海宽,男,1982年4月生,2005年获中国地质大学(北京)石油工程专业学士学位,2010年获中国地质大学(北京)矿产普查与勘探专业博士学位,现为中国石油化工股份有限公司石油勘探开发研究院研究员,主要从事非常规油气地质研究工作。Email:niehk.syky@sinopec.com
基金资助:
国家科技重大专项（2016ZX05061-001）和国家自然科学基金项目（No.41872124、No.41202103）资助。

Abstract

Abstract:

In the biostratigraphic research of the Upper Ordovician Wufeng Formation-Lower Silurian Longmaxi Formation shale, graptolite is globally recognized as the dominant species, providing a basis for the fine division of shale in Wufeng-Longmaxi formations. In Sichuan Basin and its periphery, the WF2-LM4 graptolite zones in Wufeng-Longmaxi formations are the shale gas enrichment and high-yield intervals. Currently, graptolite zones are mainly divided by core identification. However, the large-scale application of this technology is limited by the sparse coring wells. In order to overcome the shortcomings of the existing technology, it is necessary to develop a logging division method and system for the isochronous shale strata based on the characteristics of graptolite zones, thus achieving the rapid and accurate evaluation of the shale gas high-yield interval. From the perspective of technology, the correspondence between the types of graptolite zones of the study area and the natural gamma-ray (GR) logging curve can be determined through the identification of graptolites in standard wells. For new wells in the study area, the position of each graptolite zone can be preliminarily determined according to the local peaks of GR curve. The half amplitude corresponding to the local minimum or maximum value adjacent to a local peak in the upward direction (to shallow layer) can be determined as the upper boundary of the graptolite zone corresponding to the local peak, namely the lower boundary of the overlying graptolite zone. On the plane, different stratigraphic zones can be divided according to sedimentary environments and facies, and then the correspondence between graptolite zones of standard wells and GR curves is established in each zone. The longitudinal and horizontal distribution of the shale gas enrichment and high-yield intervals in Wufeng-Longmaxi formations can be quickly determined by the logging division scheme of graptolite zone, providing technical means for predicting and evaluating the shale gas enrichment and high yield intervals in exploration and development.

Key words: shale gas, graptolite zone, isochronous strata, Wufeng Formation-Longmaxi Formation, Sichuan Basin

摘要：

上奥陶统五峰组-下志留统龙马溪组页岩生物地层研究中，笔石作为全球公认的主导门类，为五峰组-龙马溪组页岩的精细划分提供依据。在四川盆地及其周缘地区，五峰组-龙马溪组的WF2-LM4笔石带页岩是页岩气的富集高产层段，目前主要通过岩心鉴定来划分笔石带，但取心井数量少限制了这一技术的大规模推广应用。为了克服现有技术的不足，有必要开发一种基于笔石带特征的页岩等时地层测井划分方法及系统，以达到快速、精准评价页岩气高产层段的目的。技术上，可通过标准井的笔石鉴定确定研究区的笔石带类型与自然伽马（GR）测井曲线的对应关系；对于研究区的新井，可根据GR测井曲线的各个局部峰初步确定各个笔石带的位置；某个局部峰在向上（浅层）方向上邻近的局部极小值或极大值所对应的半幅值可确定为该局部峰值所对应笔石带的上边界，也即上覆笔石带的下边界。平面上可依据沉积环境和沉积相首先划分出不同的地层分区，再在每个分区分别建立标准井笔石带与GR测井曲线的对应关系。页岩笔石带的测井划分方案能够对五峰组-龙马溪组页岩气富集高产层段的纵向和平面分布进行快速划分，为预测和评价页岩气勘探开发的富集高产层段提供技术手段。

关键词: 页岩气, 笔石带, 等时地层, 五峰组&mdash, 龙马溪组, 四川盆地

CLC Number:

TE121.3

Nie Haikuan, Li Donghui, Jiang Tao, Yan Caina, Du Wei, Zhang Guangrong. Logging isochronous stratigraphic division of shale based on characteristics of graptolite zones and its significance: a case study of Wufeng Formation-Longmaxi Formation in Sichuan Basin and its periphery[J]. Acta Petrolei Sinica, 2020, 41(3): 273-283.

聂海宽, 李东晖, 姜涛, 颜彩娜, 杜伟, 张光荣. 基于笔石带特征的页岩等时地层测井划分方法及意义——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(3): 273-283.

References

[1] LÜNING S,CRAIG J,LOYDELL D K,et al.Lower Silurian ‘hot shales’ in North Africa and Arabia:regional distribution and depositional model[J].Earth-Science Reviews,2000,49(1/4):121-200.
[2] LÜNING S,SHAHIN Y M,LOYDELL D,et al.Anatomy of a world-class source rock:distribution and depositional model of Silurian organic-rich shales in Jordan and implications for hydrocarbon potential[J].AAPG Bulletin,2005,89(10):1397-1427.
[3] ALKHAFAJI M W,ALJUBOURI Z A,ALDOBOUNI I A.Depositional environment of the Lower Silurian Akkas hot shales in the Western Desert of Iraq:results from an organic geochemical study[J].Marine and Petroleum Geology,2015,64:294-303.
[4] 陈旭,陈清,甄勇毅,等.志留纪初宜昌上升及其周缘龙马溪组黑色笔石页岩的圈层展布模式[J].中国科学:地球科学,2018,48(9):1198-1026.
CHEN Xu,CHEN Qing,ZHEN Yongyi,et al.Circumjacent distribution pattern of the Lungmachian graptolitic black shale (Early Silurian)on the Yichang uplift and its peripheral region[J].Science China Earth Sciences,2018,61(9):1195-1203.
[5] 王鹏万,邹辰,李娴静,等.昭通示范区页岩气富集高产的地质主控因素[J].石油学报,2018,39(7):744-753.
WANG Pengwan,ZOU Chen,LI Xianjing, et al.Main geological controlling factors of shale gas enrichment and high yield in Zhaotong demonstration area[J].Acta Petrolei Sinica,2018,39(7):744-753.
[6] 何治亮,胡宗全,聂海宽,等.四川盆地五峰组-龙马溪组页岩气富集特征与"建造-改造"评价思路[J].天然气地球科学,2017,28(5):724-733.
HE Zhiliang,HU Zongquan,NIE Haikuan,et al.Characterization of shale gas enrichment in the Wufeng-Longmaxi Formation in the Sichuan Basin and its evaluation of geological construction-transformation evolution sequence[J].Natural Gas Geoscience,2017,28(5):724-733.
[7] 马新华,谢军.川南地区页岩气勘探开发进展及发展前景[J].石油勘探与开发,2018,45(1):161-169.
MA Xinhua,XIE Jun.The progress and prospects of shale gas exploration and exploitationin southern Sichuan Basin,NW China[J].Petroleum Exploration and Development,2018,45(1):161-169.
[8] 王志刚.涪陵大型海相页岩气田成藏条件及高效勘探开发关键技术[J].石油学报,2019,40(3):370-382.
WANG Zhigang.Reservoir formation conditions and key efficient exploration & development technologies for marine shale gas fields in Fuling area,South China[J].Acta Petrolei Sinica,2019,40(3):370-382.
[9] 陈旭,樊隽轩,张元动,等.五峰组及龙马溪组黑色页岩在扬子覆盖区内的划分与圈定[J].地层学杂志,2015,39(4):351-358.
CHEN Xu,FAN Junxuan,ZHANG Yuandong,et al.Subdivision and delineation of the Wufeng and Lungmachi black shales in the subsurface areas of the Yangtze platform[J].Journal of Stratigraphy,2015,39(4):351-358.
[10] 陈旭,樊隽轩,王文卉,等.黔渝地区志留系龙马溪组黑色笔石页岩的阶段性渐进展布模式[J].中国科学:地球科学,2017,47(6):720-732.
CHEN Xu,FAN Junxuan,WANG Wenhui,et al.Stage-progressive distribution pattern of the Lungmachi black graptolitic shales from Guizhou to Chongqing,Central China[J].Science China Earth Sciences,2017,60(6):1133-1146.
[11] JIN Zhijun,NIE Haikuan,LIU Quanyou,et al.Source and seal coupling mechanism for shale gas enrichment in Upper Ordovician Wufeng Formation-Lower Silurian Longmaxi Formation in Sichuan Basin and its periphery[J].Marine and Petroleum Geology,2018,97:78-93.
[12] NIE Haikuan,JIN Zhijun.Source rock and cap rock controls on the Upper Ordovician Wufeng Formation-Lower Silurian Longmaxi Formation shale gas accumulation in the Sichuan Basin and its peripheral areas[J].Acta Geologica Sinica (English Edition),2016,90(3):1059-1060.
[13] 聂海宽,金之钧,边瑞康,等.四川盆地及其周缘上奥陶统五峰组-下志留统龙马溪组页岩气"源-盖控藏"富集[J].石油学报,2016,37(5):557-571.
NIE Haikuan,JIN Zhijun,BIAN Ruikang,et al.The "source-cap hydrocarbon-controlling" enrichment of shale gas in Upper Ordovician Wufeng Formation-Lower Silurian Longmaxi Formation of Sichuan Basin and its periphery[J].Acta Petrolei Sinica,2016,37(5):557-571.
[14] 聂海宽,汪虎,何治亮,等.常压页岩气形成机制、分布规律及勘探前景——以四川盆地及其周缘五峰组-龙马溪组为例[J].石油学报,2019,40(2):131-143.
NIE Haikuan,WANG Hu,HE Zhiliang,et al.Formation mechanism,distribution and exploration prospect of normal pressure shale gas reservoir:a case study of Wufeng Formation-Longmaxi Formation in Sichuan Basin and its periphery[J].Acta Petrolei Sinica,2019,40(2):131-143.
[15] 王秀平,牟传龙,王启宇,等.川南及邻区龙马溪组黑色岩系成岩作用[J].石油学报,2015,36(9):1035-1047.
WANG Xiuping,MOU Chuanlong,WANG Qiyu,et al.Diagenesis of black shale in Longmaxi Formation,southern Sichuan Basin and its periphery[J].Acta Petrolei Sinica,2015,36(9):1035-1047.
[16] 张国伟,郭安林,王岳军,等.中国华南大陆构造与问题[J].中国科学:地球科学,2013,43(10):1553-1582.
ZHANG Guowei,GUO Anlin,WANG Yuejun,et al.Tectonics of South China continent and its implications.Science China Earth Sciences,2013,56(11):1804-1828.
[17] 梁狄刚,郭彤楼,边立曾,等.中国南方海相生烃成藏研究的若干新进展(三)南方四套区域性海相烃源岩的沉积相及发育的控制因素[J].海相油气地质,2009,14(2):1-19.
LIANG Digang,GUO Tonglou,BIAN Lizeng,et al.Some Progresses on studies of hydrocarbon generation and accumulation in marine sedimentary regions,Southern China (Part 3):controlling factors on the sedimentary facies and development of palaeozoic marine source rocks[J].Marine Origin Petroleum Geology,2009,14(2):1-19.
[18] 聂海宽,金之钧,马鑫,等.四川盆地及邻区上奥陶统五峰组-下志留统龙马溪组底部笔石带及沉积特征[J].石油学报,2017,32(2):160-174.
NIE Haikuan,JIN Zhijun,MA Xin,et al.Graptolites zone and sedimentary characteristics of Upper Ordovician Wufeng Formation-Lower Silurian Longmaxi Formation in Sichuan Basin and its adjacent areas[J].Acta Petrolei Sinica,2017,38(2):160-174.
[19] 陈旭,戎嘉余,周志毅,等.上扬子区奥陶-志留纪之交的黔中隆起和宜昌上升[J].科学通报,2001,46(12):1052-1056.
CHEN Xu,RONG Jiayu,ZHOU Zhiyi,et al.The central Guizhou and Yi-chang uplifts,Upper Yangtze region,between Ordovician and Silurian[J].Chinese Science Bulletin,2001,46(18):1580-1584.
[20] 聂海宽,张金川,包书景,等.四川盆地及其周缘上奥陶统-下志留统页岩气聚集条件[J].石油与天然气地质,2012,33(3):335-345.
NIE Haikuan,ZHANG Jinchuan,BAO Shujing,et al.Shale gas accumulation conditions of the Upper Ordovician-Lower Silurian in Sichuan Basin and its periphery[J].Oil & Gas Geology,2012,33(3):335-345.
[21] 罗超,王兰生,石学文,等.长宁页岩气田宁211井五峰组-龙马溪组生物地层[J].地层学杂志,2017,41(2):142-152.
LUO Chao,WANG Lansheng,SHI Xuewen,et al.Biostratigraphy of the Wufeng to Longmaxi Formation at Well Ning 211 of Changning shale gas field[J].Journal of Stratigraphy,2017,41(2):142-152.
[22] 王玉满,王宏坤,张晨晨,等.四川盆地南部深层五峰组-龙马溪组裂缝孔隙评价[J].石油勘探与开发,2017,44(4):531-539.
WANG Yuman,WANG Hongkun,ZHANG Chenchen,et al.Fracture pore evaluation of the Upper Ordovician Wufeng to Lower Silurian Longmaxi formations in southern Sichuan Basin,SW China[J].Petroleum Exploration and Development,2017,44(4):531-539.
[23] 吴伟,谢军,石学文,等.川东北巫溪地区五峰组-龙马溪组页岩气成藏条件与勘探前景[J].天然气地球科学,2017,28(5):734-743.
WU Wei,XIE Jun,SHI Xuewen,et al.Accumulation condition and exploration potential for Wufeng-Longmaxi shale gas in Wuxi area,northeastern Sichuan Basin[J].Natural Gas Geoscience,2017,28(5):734-743.
[24] 王红岩,郭伟,梁峰,等.宣汉-巫溪地区五峰组-龙马溪组黑色页岩生物地层特征及分层对比[J].天然气工业,2017,37(7):27-33.
WANG Hongyan,GUO Wei,LIANG Feng,et al.Black shale biostratigraphic characteristics and stratigraphic correlation in the Wufeng and Longmaxi Fms of the Xuanhan-Wuxi areas[J].Natural Gas Industry,2017,37(7):27-33.
[25] 武瑾,梁峰,吝文,等.渝东北地区巫溪2井五峰组-龙马溪组页岩气储层及含气性特征[J].石油学报,2017,38(5):512-524.
WU Jin,LIANG Feng,LIN Wen,et al.Reservoirs characteristics and gas-bearing capacity of Wufeng-Longmaxi Formation shale in Well WX-2,northeast Chongqing area[J].Acta Petrolei Sinica,2017,38(5):512-524.
[26] 梁峰,王红岩,拜文华,等.川南地区五峰组-龙马溪组页岩笔石带对比及沉积特征[J].天然气工业,2017,37(7):20-26.
LIANG Feng,WANG Hongyan,BAI Wenhua,et al.Graptolite correlation and sedimentary characteristics of Wufeng-Longmaxi shale in southern Sichuan Basin[J].Natural Gas Industry,2017,37(7):20-26.
[27] 王怿,戎嘉余,詹仁斌,等.鄂西南奥陶系-志留系交界地层研究兼论宜昌上升[J].地层学杂志,2013,37(3):264-274.
WANG Yi,RONG Jiayu,ZHAN Renbin,et al.On the Ordovician-Silurian boundary strata in southwestern Hubei,and the Yichang uplift[J]. Journal of Stratigraphy,2013,37(3):264-274.
[28] 戎嘉余,魏鑫,詹仁斌,等.奥陶纪末期深水介壳动物群在湘西北的发现及其古生态意义[J].中国科学:地球科学,2018,48(6):753-766.
RONG Jiayu,WEI Xin,ZHAN Renbin,et al.A deep water shelly fauna from the uppermost Ordovician in northwestern Hunan,South China and its paleoecological implications[J].Science China Earth Sciences,2018,61(6):730-744.
[29] 陈旭,樊隽轩,陈清,等.论广西运动的阶段性[J].中国科学:地球科学,2014,44(5):842-850.
CHEN Xu,FAN Junxuan,CHEN Qing,et al.Toward a stepwise Kwangsian orogeny[J].Science China Earth Sciences,2014,57(3):379-387.
[30] 何卫红.扬子海盆晚奥陶世晚期至志留纪初期海平面升降与奥陶/志留系界线的划分与对比[D].北京:中国地质科学院,2002.
HE Weihong.The sea-level changes during the Latest Ordovician to the Earliest Silurian in the Yangtze Basin and the subdivision of the Ordovician-Silurian boundary[D].Beijing:Chinese Academy Geological Sciences,2002.
[31] RONG Jiayu,HUANG Bing,ZHAN Renbin,et al.Latest Ordovician brachiopod and trilobite assemblage from Yuhang,northern Zhejiang,East China:a window on Hirnantian deep-water benthos[J].Historical Biology,2008,20(2):137-148.
[32] 王超,张柏桥,陆永潮,等.焦石坝地区五峰组-龙马溪组一段页岩岩相展布特征及发育主控因素[J].石油学报,2018,39(6):631-644.
WANG Chao,ZHANG Baiqiao,LU Yongchao,et al.Lithofacies distribution characteristics and main development controlling factors of shale in Wufeng Formation-Member 1 of Longmaxi Formation in Jiaoshiba area[J].Acta Petrolei Sinica,2018,39(6):631-644.

Logging isochronous stratigraphic division of shale based on characteristics of graptolite zones and its significance: a case study of Wufeng Formation-Longmaxi Formation in Sichuan Basin and its periphery

基于笔石带特征的页岩等时地层测井划分方法及意义——以四川盆地及其周缘五峰组—龙马溪组为例

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	Lu Xuesong, Liu Shaobo, Tian Hua, Ma Xingzhi, Yu Zhichao, Fan Junjia, Gui Lili, Liu Qiang. An evaluation method for the integrity of mudstone caprock in deep anticlinal traps and its application: a case study of the Sinian gas reservoirs in the central Sichuan Basin [J]. Acta Petrolei Sinica, 2021, 42(4): 415-427.
[2]	Mi Lidong. Inversion method of discrete fracture network of shale gas based on gas production profile [J]. Acta Petrolei Sinica, 2021, 42(4): 481-491.
[3]	He Xiao, Wu Jianfa, Yong Rui, Zhao Shengxian, Zhou Xiaojin, Zhang Dongjun, Zhang Deliang, Zhong Chengxu. Accumulation conditions and key exploration and development technologies of marine shale gas field in Changning-Weiyuan block,Sichuan Basin [J]. Acta Petrolei Sinica, 2021, 42(2): 259-272.
[4]	Liang Xing, Xu Zhengyu, Zhang Jiehui, Zhang Zhao, Li Zhaofeng, Jiang Pei, Jiang Liwei, Zhu Douxing, Liu Chen. Key efficient exploration and development technoloiges of shallow shale gas:a case study of Taiyang anticline area of Zhaotong National Shale Gas Demonstration Zone [J]. Acta Petrolei Sinica, 2020, 41(9): 1033-1048.
[5]	Chen Hao, Zhou Tao, Fan Huaicai, Zhang Jian, Yang Shenglai. Preparation method and stress sensitivity of core samples with hydraulic fractures in shale reservoirs [J]. Acta Petrolei Sinica, 2020, 41(9): 1117-1126.
[6]	Li Junqian, Lu Shuangfang, Zhang Pengfei, Li Wenbiao, Jing Tieya, Feng Wenjun. Q uantitative characterization and microscopic occurrence mechanism of pore water in shale matrix [J]. Acta Petrolei Sinica, 2020, 41(8): 979-990.
[7]	Yan Haijun, Peng Xian, Xia Qinyu, Xu Wei, Luo Wenjun, Li Xinyu, Zhang Lin, Zhu Qiuying, Zhu Xun, Liu Xixiang. Distribution features of ancient karst landform in the fourth Member of the Dengying Formation in the Gaoshiti-Moxi region and its guiding significance for gas reservoir development [J]. Acta Petrolei Sinica, 2020, 41(6): 658-670,752.
[8]	Bi Haibin, Meng Hao, Gao Rili, Zheng Jing, Xu Xiaolin, Ju Xiujuan, Niu Wei, Zhang Jin, Zhou Mingqing, Zhao Lihua. Evaluation method of recoverable reserves of single well in undeveloped area of shale gas [J]. Acta Petrolei Sinica, 2020, 41(5): 565-573.
[9]	Gu Yifan, Zhou Lu, Jiang Yuqiang, Ni Jia, Li Junliang, Zhu Xun, Fu Yonghong, Jiang Zengzheng. Reservoir types and gas well productivity models for Member 4 of Sinian Dengying Formation in Gaoshiti block, Sichuan Basin [J]. Acta Petrolei Sinica, 2020, 41(5): 574-583.
[10]	He Zhiliang, Nie Haikuan, Hu Dongfeng, Jiang Tingxue, Wang Ruyue, Zhang Yuying, Zhang Guangrong, Lu Zhiyuan. 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.
[11]	Yang Wei, Wei Guoqi, Xie Wuren, Ma Shiyu, Jin Hui, Su Nan, Sun Ai, Shen Juehong, Hao Cuiguo, Wu Saijun. Main controlling factors and genetic mechanism for the development of high-quality reservoirs in Longwangmiao Formation,central Sichuan Basin [J]. Acta Petrolei Sinica, 2020, 41(4): 421-432.
[12]	Gao Guohui, Cao Jian, Luo Bing, Xiao Di, Zhang Ya, Chen Cong. Evidence of the Middle Permian marine mixed type source rocks in the northwestern Sichuan Basin and its contribution to large gas reservoirs in Shuangyushi area [J]. Acta Petrolei Sinica, 2020, 41(4): 433-445.
[13]	Guo Jianchun, Tao Liang, Chen Chi, Li Ming, Zhao Zhihong. A new method for evaluating the mixed wettability of shale in Longmaxi Formation in the southern Sichuan [J]. Acta Petrolei Sinica, 2020, 41(2): 216-225.
[14]	Guo Tonglou, He Xipeng, Zeng Ping, Gao Yuqiao, Zhang Peixian, He Guisong. Geological characteristics and beneficial development scheme of shale gas reservoirs in complex tectonic regions:a case study of Wufeng-Longmaxi formations in Sichuan Basin and its periphery [J]. Acta Petrolei Sinica, 2020, 41(12): 1490-1500.
[15]	Qiu Nansheng, Feng Qianqian, Borjigin Tenger, Shen Baojian, Ma Zhongliang, Yu Lingjie, Cao Aiqiang. Yanshanian-Himalayan differential tectono-thermal evolution and shale gas preservation in Dingshan area,southeastern Sichuan Basin [J]. Acta Petrolei Sinica, 2020, 41(12): 1610-1622.