济阳坳陷沙四段上亚段—沙三段下亚段泥页岩层理结构特征及储集性控制因素
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摘要
济阳坳陷沙四段上亚段—沙三段下亚段泥页岩具有复杂的成分及结构非均质性,对其储集性控制因素尚不明确,制约了页岩油勘探进展。利用岩石薄片分析等资料将研究区以富碳酸盐为特征的泥页岩分为A—J共10种层理结构类型,以B—D类最为发育,所占比例达80%;利用岩石薄片、氩离子抛光-扫描电镜对泥页岩基质孔隙类型进行观察与综合分析,认为研究区孔隙类型主要有刚性颗粒间孔、有机质及黏土矿物收缩孔和碳酸盐晶间孔。从层理结构类型来看,G,H,B和D类储集性较好,其次为E和F类,A和C类较差,其他类型储集性更差。分析不同类型层理结构泥页岩储集性控制因素发现:碳酸盐呈泥晶结构的泥页岩,矿物成分对孔隙发育程度具有主导控制作用;碳酸盐呈晶粒结构(包含柱纤结构)的泥页岩,层理结构对储集性的控制作用较强。根据泥页岩出油井段分析结果,指出下步应以寻找碳酸盐含量为30%～50%的G,H,B和D类层理结构泥页岩为主要勘探方向,优选碳酸盐含量满足上述条件且G和H类层理结构泥页岩层段。
Mud shale in Upper Es4 to Lower Es3 Members of Jiyang Depression has complicate composition and structural heterogeneity,and controlling factors of reservoir property difference are unclear,restricting the progress of shale oil exploration. Bedding structures in mud shale characterized by rich carbonate in Upper Es4 to Lower Es3 Members of Jiyang Depression can be divided into 10 types by using thin slice analysis data. Results show that types of B,C and D are the most developed in mud shale,which proportion can reach 80%. By analyzing and observing pore types of mud shale matrix through thin section and argon ion polishing-scanning electron microscopy,the main pore types in the study area are considered to be rigid intergranular pore,organic matter and clay shrinkage pore,and carbonate intergranular pore. According to the bedding structure type,G,H,B and D have the best reservoir property,followed by E and F,A and C,and other types are the worst. By analyzing the controlling factors of mud shale reservoir property of different types of bedding structure,the mineral composition plays a leading role in controlling the degree of pore development in mud shale with muddy crystal structure carbonate. Bedding structure strongly affects the degree of pore development in mud shale with carbonate grain structure(including columnar fiber structure). According to the analysis of mud shale oil production section,it is clear that the further main exploration direction should be to turn to mud shale of G,H,B and D types with 30%-50% carbonate content,and it is preferable to consider shale sections with more concentrated G and H types with carbonate content meeting the above conditions.
Mud shale in Upper Es4 to Lower Es3 Members of Jiyang Depression has complicate composition and structural heterogeneity,and controlling factors of reservoir property difference are unclear,restricting the progress of shale oil exploration. Bedding structures in mud shale characterized by rich carbonate in Upper Es4 to Lower Es3 Members of Jiyang Depression can be divided into 10 types by using thin slice analysis data. Results show that types of B,C and D are the most developed in mud shale,which proportion can reach 80%. By analyzing and observing pore types of mud shale matrix through thin section and argon ion polishing-scanning electron microscopy,the main pore types in the study area are considered to be rigid intergranular pore,organic matter and clay shrinkage pore,and carbonate intergranular pore. According to the bedding structure type,G,H,B and D have the best reservoir property,followed by E and F,A and C,and other types are the worst. By analyzing the controlling factors of mud shale reservoir property of different types of bedding structure,the mineral composition plays a leading role in controlling the degree of pore development in mud shale with muddy crystal structure carbonate. Bedding structure strongly affects the degree of pore development in mud shale with carbonate grain structure(including columnar fiber structure). According to the analysis of mud shale oil production section,it is clear that the further main exploration direction should be to turn to mud shale of G,H,B and D types with 30%-50% carbonate content,and it is preferable to consider shale sections with more concentrated G and H types with carbonate content meeting the above conditions.
引文
[1]孙焕泉.济阳坳陷页岩油勘探实践与认识[J].中国石油勘探,2017,22(4):1-14.SUN Huanquan.Exploration practice and cognitions of shale oil in Jiyang depression[J].China Petroleum Exploration,2017,22(4):1-14.
[2]朱光有,金强,张水昌,等.济阳坳陷东营凹陷古近系沙河街组深湖相油页岩的特征及成因[J].古地理学报,2005,7(1):59-69.ZHU Guangyou,JIN Qiang,ZHANG Shuichang,et al.Characteristics and origin of deep lake oil shale of the Shahejie Formation of Paleogene in Dongying Sag,Jiyang Depression[J].Journal of Palaeogeography,2005,7(1):59-69.
[3]王永诗,李政,巩建强,等.济阳坳陷页岩油气评价方法--以沾化凹陷罗家地区为例[J].石油学报,2013,34(1):83-91.WANG Yongshi,LI Zheng,GONG Jianqiang,et al.Discussion on an evaluation method of shale oil and gas in Jiyang depression:a case study on Luojia area in Zhanhua sag[J].Acta Petrolei Sinica,2013,34(1):83-91.
[4]杨万芹,蒋有录,王勇.东营凹陷沙三下-沙四上亚段泥页岩岩相沉积环境分析[J].中国石油大学学报:自然科学版,2015,39(4):19-26.YANG Wanqin,JIANG Youlu,WANG Yong.Study on shale facies sedimentary environment of lower Es3-upper Es4in Dongying sag[J].Joumal of China University of Petro1eum:Edition of Natural Science,2015,39(4):19-26.
[5]刘惠民,孙善勇,操应长,等.东营凹陷沙三段下亚段细粒沉积岩岩相特征及其分布模式[J].油气地质与采收率,2017,24(1):1-10.LIU Huimin,SUN Shanyong,CAO Yingchang,et al.Lithofacies characteristics and distribution model of fine-grained sedimentary rock in the lower Es3member,Dongying sag[J].Petroleum Geology and Recovery Efficiency,2017,24(1):1-10.
[6]杨万芹,王学军,蒋有录,等.湖泊古气候的量化恢复及其对细粒沉积的影响--以东营凹陷沙四段上亚段-沙三段下亚段为例[J].油气地质与采收率,2018,25(2):29-36.YANG Wanqin,WANG Xuejun,JIANG Youlu,et al.Quantitative reconstruction of paleoclimate and its effects on fine-grained lacustrine sediments:A case study of the upper Es4and lower Es3in Dongying Sag[J].Petroleum Geology and Recovery Efficiency,2018,25(2):29-36.
[7]吴靖,姜在兴,童金环,等.东营凹陷古近系沙河街组四段上亚段细粒沉积岩沉积环境及控制因素[J].石油学报,2016,37(4):464-473.WU Jing,JIANG Zaixing,TONG Jinhuan,et al.Sedimentary environment and control factors of fine-grained sedimentary rocks in the upper fourth Member of Paleogene Shahejie Formation,Dongying sag[J].Acta Petrolei Sinica,2016,37(4):464-473.
[8]王冠民,林国松.济阳坳陷古近纪的古气候区分析[J].矿物岩石地球化学通报,2012,31(5):505-509.WANG Guanmin,LIN Guosong.Eogene paleoclimate zone study in the Jiyang Depression[J].Bulletin of Mineralogy,Petrology and Geochemistry,2012,31(5):505-509.
[9]刘惠民,张守鹏,王朴,等.沾化凹陷罗家地区沙三段下亚段页岩岩石学特征[J].油气地质与采收率,2012,19(6):11-15.LIU Huimin,ZHANG Shoupeng,WANG Pu,et al.Lithologic characteristics of Lower Es3shale in Luojia area,Zhanhua sag[J].Petroleum Geology and Recovery Efficiency,2012,19(6):11-15.
[10]王冠民.济阳坳陷古近系页岩的纹层组合及成因分类[J].吉林大学学报:自然科学版,2012,42(3):666-671,680.WANG Guanmin.Laminae combination and genetic classification of Eogene shale in Jiyang Depression[J].Journal of Jilin University:Earth Science Edition,2012,42(3):666-671,680.
[11]邓宏文,钱凯.深湖相泥岩的成因类型和组合演化[J].沉积学报,1990,8(3):1-21.DENG Hongwen,QIAN Kai.The genetic types and association evolution of deep lacustrine facies mudstones[J].Acta Sedimentologica Sinica,1990,8(3):l-21.
[12]郝运轻,谢忠怀,周自立,等.非常规油气勘探领域泥页岩综合分类命名方案探讨[J].油气地质与采收率,2012,19(6):16-19,24.HAO Yunqing,XIE Zhonghuai,ZHOU Zili,et al.Discussion on multi-factors identification of mudstone and shale[J].Petroleum Geology and Recovery Efficiency,2012,19(6):16-19,24.
[13]王勇,王学军,宋国奇,等.渤海湾盆地济阳坳陷泥页岩岩相与页岩油富集关系[J].石油勘探与开发,2016,43(5):696-704.WANG Yong,WANG Xuejun,SONG Guoqi,et al.Genetic connection between mud shale lithofacies and shale oil enrichment in Jiyang Depression,Bohai Bay Basin[J].Petroleum Exploration and Development,2016,43(5):696-704.
[14]吴林钢,李秀生,郭小波,等.马朗凹陷芦草沟组页岩油储层成岩演化与溶蚀孔隙形成机制[J].中国石油大学学报:自然科学版,2012,36(3):38-43,53.WU Lingang,LI Xiusheng,GUO Xiaobo,et al.Diagenetic evolution and formation mechanism of dissolved pore of shale oil reservoirs of Lucaogou formation in Malang sag[J].Journal of China University of Petroleum:Edition of Natural Science,2012,36(3):38-43,53.
[15]张顺,刘惠民,宋国奇,等.东营凹陷页岩油储集空间成因及控制因素[J].石油学报,2016,37(12):1 495-1 507,1 527.ZHANG Shun,LIU Huimin,SONG Guoqi,et al.Genesis and control factors of shale oil reserving space in Dongying sag[J].Acta Petrolei Sinica,2016,37(12):1 495-1 507,1 527.
[16]黄璞,姜振学,程礼军,等.川东北牛蹄塘组页岩孔隙结构特征及其控制因素[J].大庆石油地质与开发,2016,35(5):156-162.HUANG Pu,JIANG Zhenxue,CHENG Lijun,et al.Pore structural characteristics and their controlling factors of Niutitang-Formation shale in Northeast Sichuan Basin[J].Petroleum Geology&Oilfield Development in Daqing,2016,35(5):156-162.
[17]曹涛涛,宋之光.页岩有机质特征对有机孔发育及储层的影响[J].特种油气藏,2016,23(4):7-13.CAO Taotao,SONG Zhiguang.Effects of organic matter properties on organic pore development and reservoir[J].Special Oil&Gas Reservoirs,2016,23(4):7-13.
[18]刘毅,陆正元,戚明辉,等.渤海湾盆地沾化凹陷沙河街组页岩油微观储集特征[J].石油实验地质,2017,39(2):180-185,194.LIU Yi,LU Zhengyuan,QI Minghui,et al.Microscopic characteristics of shale oil reservoirs in Shahejie Formation in Zhanhua Sag,Bohai Bay Basin[J].Petroleum Geology&Experiment,2017,39(2):180-185,194.
[19]李超,朱筱敏,朱世发,等.沾化凹陷罗家地区沙三下段泥页岩储层特征[J].沉积学报,2015,33(4):795-808.LI Chao,ZHU Xiaomin,ZHU Shifa,et al.Shale reservoir characteristics of the lower 3th member of Shahejie Formation,Luojia area,Zhanhua sag[J].Acta Sedimentologica Sinica,2015,33(4):795-808.
[20]陈世悦,张顺,王永诗,等.渤海湾盆地东营凹陷古近系细粒沉积岩岩相类型及储集层特征[J].石油勘探与开发,2016,43(2):198-208.CHEN Shiyue,ZHANG Shun,WANG Yongshi,et al.Lithofacies types and reservoirs of Paleogene fine-grained sedimentary rocks in Dongying Sag,Bohai Bay Basin[J].Petroleum Exploration and Development,2016,43(2):198-208.
[21]李钜源.渤海湾盆地东营凹陷古近系泥页岩孔隙特征及孔隙度演化规律[J].石油实验地质,2015,37(5):566-574.LI Juyuan.Pore characteristics and their evolution in Paleogene mud shales,Dongying sag,Bohai Bay Basin[J].Petroleum Geology&Experiment,2015,37(5):566-574.
[22]宁方兴,王学军,郝雪峰,等.济阳坳陷不同岩相页岩油赋存机理[J].石油学报,2017,38(2):185-195.NING Fangxing,WANG Xuejun,HAO Xuefeng,et al.Occurrence mechanism of shale oil with different lithofacies in Jiyang depression[J].Acta Petrolei Sinica,2017,38(2):185-195.
[23]王冠民,任拥军,钟建华,等.济阳坳陷古近系黑色页岩中纹层状方解石脉的成因探讨[J].地质学报,2005,79(6):834-838.WANG Guanmin,REN Yongjun,ZHONG Jianhua,et al.Genetic analysis on lamellar calcite veins in Paleogene black shale of the Jiyang Depression[J].Acta Geologica Sinica,2005,79(6):834-838.
[24]王冠民,熊周海,张婕,等.济阳坳陷古近系页岩文石含量与烃源岩热演化的对应关系[J].石油学报,2017,38(8):855-862.WANG Guanmin,XIONG Zhouhai,ZHANG Jie,et al.The correspondence between the aragonite content of Palaeogene shale and the thermal evolution of source rocks in Jiyang depression[J].Acta Petrolei Sinica,2017,38(8):855-862.
[25]王勇,刘惠民,宋国奇,等.湖相泥页岩中碳酸盐成因及页岩油气地质意义--以东营凹陷沙河街组四段上亚段-沙河街组三段下亚段烃源岩为例[J].石油学报,2017,38(12):1 390-1 400.WANG Yong,LIU Huimin,SONG Guoqi,et al.Carbonate genesis and geological significance of shale hydrocarbon in lacustrine facies mud shale:a case study of source rocks in the upper submember of Member4 and lower submember of Member3 of Shahejie Formation,Dongying sag[J].Acta Petrolei Sinica,2017,38(12):1 390-1 400.
[26]王淼,陈勇,徐兴友,等.泥质岩中纤维状结构脉体成因机制及其与油气活动关系研究进展[J].地球科学进展,2015,30(10):1 107-1 118.WANG Miao,CHEN Yong,XU Xingyou,et al.Progress on formation mechanism of the fibrous veins in mudstone and its implications to hydrocarbon migration[J].Advances in Earth Science,2015,30(10):1 107-1 118.
[2]朱光有,金强,张水昌,等.济阳坳陷东营凹陷古近系沙河街组深湖相油页岩的特征及成因[J].古地理学报,2005,7(1):59-69.ZHU Guangyou,JIN Qiang,ZHANG Shuichang,et al.Characteristics and origin of deep lake oil shale of the Shahejie Formation of Paleogene in Dongying Sag,Jiyang Depression[J].Journal of Palaeogeography,2005,7(1):59-69.
[3]王永诗,李政,巩建强,等.济阳坳陷页岩油气评价方法--以沾化凹陷罗家地区为例[J].石油学报,2013,34(1):83-91.WANG Yongshi,LI Zheng,GONG Jianqiang,et al.Discussion on an evaluation method of shale oil and gas in Jiyang depression:a case study on Luojia area in Zhanhua sag[J].Acta Petrolei Sinica,2013,34(1):83-91.
[4]杨万芹,蒋有录,王勇.东营凹陷沙三下-沙四上亚段泥页岩岩相沉积环境分析[J].中国石油大学学报:自然科学版,2015,39(4):19-26.YANG Wanqin,JIANG Youlu,WANG Yong.Study on shale facies sedimentary environment of lower Es3-upper Es4in Dongying sag[J].Joumal of China University of Petro1eum:Edition of Natural Science,2015,39(4):19-26.
[5]刘惠民,孙善勇,操应长,等.东营凹陷沙三段下亚段细粒沉积岩岩相特征及其分布模式[J].油气地质与采收率,2017,24(1):1-10.LIU Huimin,SUN Shanyong,CAO Yingchang,et al.Lithofacies characteristics and distribution model of fine-grained sedimentary rock in the lower Es3member,Dongying sag[J].Petroleum Geology and Recovery Efficiency,2017,24(1):1-10.
[6]杨万芹,王学军,蒋有录,等.湖泊古气候的量化恢复及其对细粒沉积的影响--以东营凹陷沙四段上亚段-沙三段下亚段为例[J].油气地质与采收率,2018,25(2):29-36.YANG Wanqin,WANG Xuejun,JIANG Youlu,et al.Quantitative reconstruction of paleoclimate and its effects on fine-grained lacustrine sediments:A case study of the upper Es4and lower Es3in Dongying Sag[J].Petroleum Geology and Recovery Efficiency,2018,25(2):29-36.
[7]吴靖,姜在兴,童金环,等.东营凹陷古近系沙河街组四段上亚段细粒沉积岩沉积环境及控制因素[J].石油学报,2016,37(4):464-473.WU Jing,JIANG Zaixing,TONG Jinhuan,et al.Sedimentary environment and control factors of fine-grained sedimentary rocks in the upper fourth Member of Paleogene Shahejie Formation,Dongying sag[J].Acta Petrolei Sinica,2016,37(4):464-473.
[8]王冠民,林国松.济阳坳陷古近纪的古气候区分析[J].矿物岩石地球化学通报,2012,31(5):505-509.WANG Guanmin,LIN Guosong.Eogene paleoclimate zone study in the Jiyang Depression[J].Bulletin of Mineralogy,Petrology and Geochemistry,2012,31(5):505-509.
[9]刘惠民,张守鹏,王朴,等.沾化凹陷罗家地区沙三段下亚段页岩岩石学特征[J].油气地质与采收率,2012,19(6):11-15.LIU Huimin,ZHANG Shoupeng,WANG Pu,et al.Lithologic characteristics of Lower Es3shale in Luojia area,Zhanhua sag[J].Petroleum Geology and Recovery Efficiency,2012,19(6):11-15.
[10]王冠民.济阳坳陷古近系页岩的纹层组合及成因分类[J].吉林大学学报:自然科学版,2012,42(3):666-671,680.WANG Guanmin.Laminae combination and genetic classification of Eogene shale in Jiyang Depression[J].Journal of Jilin University:Earth Science Edition,2012,42(3):666-671,680.
[11]邓宏文,钱凯.深湖相泥岩的成因类型和组合演化[J].沉积学报,1990,8(3):1-21.DENG Hongwen,QIAN Kai.The genetic types and association evolution of deep lacustrine facies mudstones[J].Acta Sedimentologica Sinica,1990,8(3):l-21.
[12]郝运轻,谢忠怀,周自立,等.非常规油气勘探领域泥页岩综合分类命名方案探讨[J].油气地质与采收率,2012,19(6):16-19,24.HAO Yunqing,XIE Zhonghuai,ZHOU Zili,et al.Discussion on multi-factors identification of mudstone and shale[J].Petroleum Geology and Recovery Efficiency,2012,19(6):16-19,24.
[13]王勇,王学军,宋国奇,等.渤海湾盆地济阳坳陷泥页岩岩相与页岩油富集关系[J].石油勘探与开发,2016,43(5):696-704.WANG Yong,WANG Xuejun,SONG Guoqi,et al.Genetic connection between mud shale lithofacies and shale oil enrichment in Jiyang Depression,Bohai Bay Basin[J].Petroleum Exploration and Development,2016,43(5):696-704.
[14]吴林钢,李秀生,郭小波,等.马朗凹陷芦草沟组页岩油储层成岩演化与溶蚀孔隙形成机制[J].中国石油大学学报:自然科学版,2012,36(3):38-43,53.WU Lingang,LI Xiusheng,GUO Xiaobo,et al.Diagenetic evolution and formation mechanism of dissolved pore of shale oil reservoirs of Lucaogou formation in Malang sag[J].Journal of China University of Petroleum:Edition of Natural Science,2012,36(3):38-43,53.
[15]张顺,刘惠民,宋国奇,等.东营凹陷页岩油储集空间成因及控制因素[J].石油学报,2016,37(12):1 495-1 507,1 527.ZHANG Shun,LIU Huimin,SONG Guoqi,et al.Genesis and control factors of shale oil reserving space in Dongying sag[J].Acta Petrolei Sinica,2016,37(12):1 495-1 507,1 527.
[16]黄璞,姜振学,程礼军,等.川东北牛蹄塘组页岩孔隙结构特征及其控制因素[J].大庆石油地质与开发,2016,35(5):156-162.HUANG Pu,JIANG Zhenxue,CHENG Lijun,et al.Pore structural characteristics and their controlling factors of Niutitang-Formation shale in Northeast Sichuan Basin[J].Petroleum Geology&Oilfield Development in Daqing,2016,35(5):156-162.
[17]曹涛涛,宋之光.页岩有机质特征对有机孔发育及储层的影响[J].特种油气藏,2016,23(4):7-13.CAO Taotao,SONG Zhiguang.Effects of organic matter properties on organic pore development and reservoir[J].Special Oil&Gas Reservoirs,2016,23(4):7-13.
[18]刘毅,陆正元,戚明辉,等.渤海湾盆地沾化凹陷沙河街组页岩油微观储集特征[J].石油实验地质,2017,39(2):180-185,194.LIU Yi,LU Zhengyuan,QI Minghui,et al.Microscopic characteristics of shale oil reservoirs in Shahejie Formation in Zhanhua Sag,Bohai Bay Basin[J].Petroleum Geology&Experiment,2017,39(2):180-185,194.
[19]李超,朱筱敏,朱世发,等.沾化凹陷罗家地区沙三下段泥页岩储层特征[J].沉积学报,2015,33(4):795-808.LI Chao,ZHU Xiaomin,ZHU Shifa,et al.Shale reservoir characteristics of the lower 3th member of Shahejie Formation,Luojia area,Zhanhua sag[J].Acta Sedimentologica Sinica,2015,33(4):795-808.
[20]陈世悦,张顺,王永诗,等.渤海湾盆地东营凹陷古近系细粒沉积岩岩相类型及储集层特征[J].石油勘探与开发,2016,43(2):198-208.CHEN Shiyue,ZHANG Shun,WANG Yongshi,et al.Lithofacies types and reservoirs of Paleogene fine-grained sedimentary rocks in Dongying Sag,Bohai Bay Basin[J].Petroleum Exploration and Development,2016,43(2):198-208.
[21]李钜源.渤海湾盆地东营凹陷古近系泥页岩孔隙特征及孔隙度演化规律[J].石油实验地质,2015,37(5):566-574.LI Juyuan.Pore characteristics and their evolution in Paleogene mud shales,Dongying sag,Bohai Bay Basin[J].Petroleum Geology&Experiment,2015,37(5):566-574.
[22]宁方兴,王学军,郝雪峰,等.济阳坳陷不同岩相页岩油赋存机理[J].石油学报,2017,38(2):185-195.NING Fangxing,WANG Xuejun,HAO Xuefeng,et al.Occurrence mechanism of shale oil with different lithofacies in Jiyang depression[J].Acta Petrolei Sinica,2017,38(2):185-195.
[23]王冠民,任拥军,钟建华,等.济阳坳陷古近系黑色页岩中纹层状方解石脉的成因探讨[J].地质学报,2005,79(6):834-838.WANG Guanmin,REN Yongjun,ZHONG Jianhua,et al.Genetic analysis on lamellar calcite veins in Paleogene black shale of the Jiyang Depression[J].Acta Geologica Sinica,2005,79(6):834-838.
[24]王冠民,熊周海,张婕,等.济阳坳陷古近系页岩文石含量与烃源岩热演化的对应关系[J].石油学报,2017,38(8):855-862.WANG Guanmin,XIONG Zhouhai,ZHANG Jie,et al.The correspondence between the aragonite content of Palaeogene shale and the thermal evolution of source rocks in Jiyang depression[J].Acta Petrolei Sinica,2017,38(8):855-862.
[25]王勇,刘惠民,宋国奇,等.湖相泥页岩中碳酸盐成因及页岩油气地质意义--以东营凹陷沙河街组四段上亚段-沙河街组三段下亚段烃源岩为例[J].石油学报,2017,38(12):1 390-1 400.WANG Yong,LIU Huimin,SONG Guoqi,et al.Carbonate genesis and geological significance of shale hydrocarbon in lacustrine facies mud shale:a case study of source rocks in the upper submember of Member4 and lower submember of Member3 of Shahejie Formation,Dongying sag[J].Acta Petrolei Sinica,2017,38(12):1 390-1 400.
[26]王淼,陈勇,徐兴友,等.泥质岩中纤维状结构脉体成因机制及其与油气活动关系研究进展[J].地球科学进展,2015,30(10):1 107-1 118.WANG Miao,CHEN Yong,XU Xingyou,et al.Progress on formation mechanism of the fibrous veins in mudstone and its implications to hydrocarbon migration[J].Advances in Earth Science,2015,30(10):1 107-1 118.