Article(id=1307264251916219062, tenantId=1146029695717560320, journalId=1301849983571558468, issueId=1307264251366765238, articleNumber=null, orderNo=null, doi=10.14027/j.issn.1000-0550.2024.078, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1710432000000, receivedDateStr=2024-03-15, revisedDate=1718121600000, revisedDateStr=2024-06-12, acceptedDate=1720972800000, acceptedDateStr=2024-07-15, onlineDate=1789605685451, onlineDateStr=2026-09-17, pubDate=1775750400000, pubDateStr=2026-04-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789605685451, onlineIssueDateStr=2026-09-17, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789605685451, creator=13701087609, updateTime=1789605685451, updator=13701087609, issue=Issue{id=1307264251366765238, tenantId=1146029695717560320, journalId=1301849983571558468, year='2026', volume='44', issue='2', pageStart='405', pageEnd='798', issueExtLink='null', onlineDate='null', pubDate='1775750400000', pubDateStr='2026-04-10', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1789605685321, creator='13701087609', updateTime=1789605685321, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=631, endPage=645, ext={EN=ArticleExt(id=1307264252088185527, articleId=1307264251916219062, tenantId=1146029695717560320, journalId=1301849983571558468, language=EN, title=A New Method for the Quantitative Study of Shale Oil Rock Type Combination and Reservoir Capacity: A case study from Chang 7 oil member of the Yanchang Formation in the Longdong region, Ordos Basin, columnId=null, journalTitle=Acta Sedimentologica Sinica, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Objective In geological logs of shale oil cores from the Chang 7 oil member of the Yanchang Formation in the Longdong region, Ordos Basin, for a long time the resolution of single layer thickness of each rock type has been basically 10 cm, resulting in a large number of rock-type combinations being described as a single rock type. Exploring a new method for the quantitative study of shale oil rock-type combinations and reservoir capacity benefits the efficient exploration and development of shale oil in the Chang 7 oil member. Methods In this study, the shale oil rock types in the Chang 7 oil member were re-identified by high-resolution core observation (single layer thickness resolution 1-5 cm) together with stereo microscope and thin-section identification of 405 samples and analysis of physical property data, then the rock-type combinations and reservoir capacity of Chang 7 oil member were explored quantitatively. Results There are 11 main rock types in the shale oil of Chang 7 oil member of the Yanchang Formation in the Longdong region of the Ordos Basin. Firstly, four combinations of rock-type form (unitype, stratified type, interstratified type and interstratified type) and 65 rock-type combinations were quantitatively identified for the first time. Secondly, a new method is proposed for calculating reservoir capacity on the basis of quantitative evaluation of the reservoir capacity of each of the 11 rock types, combined with the thickness percentage of each rock type, for 65 rock-type combinations. Conclusions This study demonstrates that, to guide the efficient exploration and development of the shale oil in the Chang 7 oil member, the traditional single rock-type study for shale oil should be modified to encompass the study of rock-type combinations. However, this research for the Chang 7 oil member is at the exploratory stage; further improvement will be achieved by examining the effect of combining these findings with a large amount of shale oil exploration and development data.
, authors=QingHua ZHENG
1, XingJun LIU
2, RongLi ZHANG
2, ZiLiang WANG
2, Ke WANG
3, authorsList=QingHua ZHENG, XingJun LIU, RongLi ZHANG, ZiLiang WANG, Ke WANG, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1307264253371642563, articleId=1307264251916219062, tenantId=1146029695717560320, journalId=1301849983571558468, language=CN, title=页岩油岩石类型组合及储集能力定量研究新方法, columnId=null, journalTitle=沉积学报, columnName=, runingTitle=null, highlight=null, articleAbstract=
目的 鄂尔多斯盆地陇东地区延长组长7油层组页岩油岩心地质录井中,各岩石类型单层厚度分辨率基本为10 cm,造成大量岩石类型组合长期被当成单一岩石类型描述,探索其岩石类型组合及储集能力定量研究的新方法,有利于长7油层组页岩油的高效勘探开发。 方法 通过鄂尔多斯盆地陇东地区24口井延长组长7油层组页岩油各岩石类型单层厚度分辨率1~5 cm的高分辨率岩心观察,405块样品的体视显微镜、薄片鉴定,以及物性分析资料等,该项研究首先对长7油层组岩石类型进行了重新识别,其次对长7油层组岩石类型组合及储集能力进行了探索性的定量研究。 结果 长7油层组页岩油发育11种主要的岩石类型,首次定量划分出单一型、含层型、夹层型、互层型4种岩石类型组合形式,65种岩石类型组合。在11种岩石类型储集能力定量评价基础上,结合其各岩石类型厚度百分比,探索性地提出了定量计算65种岩石类型组合储集能力的新方法。 结论 鄂尔多斯盆地陇东地区延长组长7油层组页岩油长期单一岩石类型思路的研究须向岩石类型组合思路的研究转变,指导长7油层组页岩油的高效勘探开发。然而,该项研究还处于探索阶段,尚需结合大量长7油层组页岩油勘探开发效果进一步完善。
, authors=郑庆华
1, 刘行军
2, 张荣莉
2, 王自亮
2, 王克
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郑庆华,男,1980年出生,博士研究生,副教授,油气储层地质学、致密油、页岩油教学与研究,E-mail: 272594012@qq.com
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郑庆华,男,1980年出生,博士研究生,副教授,油气储层地质学、致密油、页岩油教学与研究,E-mail: 272594012@qq.com
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2.Changqing Branch, China Petroleum Well Logging Limited Company, Xi’an 710200, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1307264507861033939, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, authorId=1307264507559044048, language=CN, stringName=张荣莉, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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(a) Structural units of the Ordos Basin (modified from Yang, 2002); (b) isopach map for the black shale of the Chang 7 oil member in the study area (modified from Yang et al., 2013), figureFileSmall=vz+lAC3LFQTzMdjWZBL28g==, figureFileBig=F2qJU5JaljuFlt+9lZnZVA==, tableContent=null), ArticleFig(id=1307264511870788589, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=CN, label=图1, caption=
(a)鄂尔多斯盆地构造单元划分(据杨俊杰,2002修改);(b)研究区长7油层组黑色页岩厚度分布图(据杨华等,2013修改), figureFileSmall=vz+lAC3LFQTzMdjWZBL28g==, figureFileBig=F2qJU5JaljuFlt+9lZnZVA==, tableContent=null), ArticleFig(id=1307264511984034798, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=EN, label=Fig.2, caption=
Main rock types of Chang 7 oil member of the Yanchang Formation, Longdong region, Ordos Basin, figureFileSmall=6GYeh0tM9z8XM6uqtKPgQQ==, figureFileBig=S3/eblafN81S7NZzq8xtjA==, tableContent=null), ArticleFig(id=1307264512063726575, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=CN, label=图2, caption=
鄂尔多斯盆地陇东地区延长组长7油层组主要的岩石类型(a)B36井,长72,1 962.12 m,黑色页岩,地质录井岩心描述为深灰色泥岩;(b)图a的单偏光镜下特征,发育黑色有机质、球形藻、页理;(c)X290井,长71,1 817.65 m,黑色泥岩,地质录井岩心描述为深灰色泥岩;(d)图c的单偏光镜下特征,黑色有机质较发育,水平层理发育;(e)L282井,长72,2 190.96 m,黑灰色泥岩,地质录井岩心描述为深灰色泥岩;(f)图e的单偏光镜下特征,黑色有机质不发育,块状层理发育;(g)X290井,长73,1 868.16 m,灰色粉砂质泥岩,地质录井岩心描述为深灰色粉砂质泥岩;(h)图g的单偏光镜下特征,粉砂级碎屑颗粒发育;(i)L303井,长71,2 061.57 m,灰色泥质粉砂岩,地质录井岩心描述为灰黑色粉砂质泥岩;(j)图i的单偏光镜下特征,泥质发育;(k)Z124井,长72,1 692.05 m,浅灰褐色粉砂岩,地质录井岩心描述为褐灰色细砂岩;(l)图k的单偏光镜下特征,泥质较发育,黑云母定向分布;(m)B36井,长72,1 953.12 m,灰褐色细砂岩,地质录井岩心描述为褐灰色细砂岩;(n)图m的单偏光镜下特征,细砂岩;(o)B36井,长72,1 962.48 m,浅灰褐色钙质细砂岩,地质录井岩心描述为褐灰色细砂岩;(p)图o的单偏光镜下特征,钙质胶结;(q)Y16井,长73,2 081.41 m,含少量黑色有机质棕褐色泥级凝灰岩,黑色有机质发育处显示黑灰色泥岩特征,地质录井岩心描述为灰黑色泥岩;(r)图q的正交偏光下插入石膏试板特征,不富含黑色有机质处见大量片状矿物且定向分布,显示最高干涉色二级蓝绿;(s)L303井,长72,2 089.40 m,富含黑色有机质棕褐色泥级凝灰岩,整体显示黑色页岩特征,但黑色有机质不发育处显示棕褐色泥级凝灰岩特征,地质录井岩心描述为灰黑色泥岩;(t)图s的正交偏光下插入石膏试板特征,见大量黑色有机质,其中不富含黑色有机质处见生成大量片状物且定向分布,整体显示最高干涉色二级蓝绿;(u)B39井,长73,1 863.38 m,浅棕褐色细砂级凝灰岩,其中富含黑色有机质处显示灰褐色细砂岩特征,地质录井岩心描述为浅灰色油迹细砂岩;(v)图u的单偏光特征,斑脱岩化强烈,见少量残存的晶屑,发育灰褐—黑褐色玻屑、微裂缝;(w)J11井,长73,2 182.65 m,黑褐色粉砂级沉凝灰岩,发育槽状交错层理,地质录井岩心描述为灰色泥质粉砂岩;(x)图w的单偏光特征,斑脱岩化强烈,见少量残存晶屑、玻屑,发育微裂缝和黑色石油
, figureFileSmall=6GYeh0tM9z8XM6uqtKPgQQ==, figureFileBig=S3/eblafN81S7NZzq8xtjA==, tableContent=null), ArticleFig(id=1307264512160195568, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=EN, label=Fig.3, caption=
Division schematic of four rock type combination forms in Chang 7 oil member of the Yanchang Formation, Longdong region, Ordos Basin, figureFileSmall=patD5WHMrqwzMiYbAO4TgQ==, figureFileBig=VMoMEcu7dBsutfmzwO0f9Q==, tableContent=null), ArticleFig(id=1307264512235693041, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=CN, label=图3, caption=
鄂尔多斯盆地陇东地区延长组长7油层组4种岩石类型组合形式划分示意图(a)单一型岩石类型组合形式,次要岩石类型厚度百分比小于5%,简化定义为主要岩石类型;(b)含层型岩石类型组合形式,次要岩石类型厚度介于5%~10%,定义为主要岩石类型含次要岩石类型;(c)夹层型岩石类型组合形式,次要岩石类型厚度百分比介于10%~40%,定义为主要岩石类型夹次要岩石类型;(d)互层型岩石类型组合形式,次要岩石类型厚度百分比介于40%~50%,定义为主要岩石类型与次要岩石类型互层
, figureFileSmall=patD5WHMrqwzMiYbAO4TgQ==, figureFileBig=VMoMEcu7dBsutfmzwO0f9Q==, tableContent=null), ArticleFig(id=1307264512306996210, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=EN, label=Fig.4, caption=
Characteristics of black shale in Chang 7 oil member of the Yanchang Formation, Longdong region, Ordos Basin, figureFileSmall=IUsSwdFS8yQVWXDpERaBXQ==, figureFileBig=R1a5TuNeH3M3iLjSRxhNiA==, tableContent=null), ArticleFig(id=1307264512365716467, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=CN, label=图4, caption=
鄂尔多斯盆地陇东地区延长组长7油层组黑色页岩特征(a)B36井,长72,1 966.82 m,黑色页岩,发育鱼化石;(b)图a的单偏光镜下特征,发育黑色有机质、页理;(c)图a的聚焦离子束—扫描电镜(FIB⁃SEM)下图像特征,见有机质、莓球状和粒状黄铁矿以及粒间孔;(d)图c中有机质内孔隙;(e)图c中莓球状黄铁矿内晶间孔发育,其间充填有机质;(f)图e中有机质收缩缝隙;聚焦离子束—扫描电镜(FIB⁃SEM)测试由西北大学大陆演化与早期生命全国重点实验室完成,仪器型号Helios G4 UC型聚焦离子束—扫描电镜(FIB⁃SEM)
, figureFileSmall=IUsSwdFS8yQVWXDpERaBXQ==, figureFileBig=R1a5TuNeH3M3iLjSRxhNiA==, tableContent=null), ArticleFig(id=1307264512504128500, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=EN, label=Fig.5, caption=
Single well column diagram in Chang 7 oil member of the Yanchang Formation, Longdong area, Ordos Basin (well Z272), figureFileSmall=8hI22d4cVAvLcZ8neNE2QQ==, figureFileBig=6z0yr2QNRmXFVxG6QjdfEQ==, tableContent=null), ArticleFig(id=1307264512600597493, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=CN, label=图5, caption=
鄂尔多斯盆地陇东地区延长组长7油层组单井柱状图(Z272井), figureFileSmall=8hI22d4cVAvLcZ8neNE2QQ==, figureFileBig=6z0yr2QNRmXFVxG6QjdfEQ==, tableContent=null), ArticleFig(id=1307264512663512054, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=EN, label=Table 1, caption=
Grainsize classification of clastic rock particles from Chang 7 oil member of the Yanchang Formation,Longdong region, Ordos Basin (modified from Zheng, 2017; Zheng et al., 2020)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 粒级类 | 陆源碎屑岩 | 凝灰质岩 |
|---|
| 十进制 | 2的几何数制 | 凝灰岩 | 沉凝灰岩 | 凝灰质沉积岩 |
|---|
| 粒径/mm | 粒级亚类 | 粒径/mm | 粒级亚类 |
|---|
| 砂 | 0.10~0.25 | 细砂 | 0.125~0.250 | 细砂 | 细砂级 凝灰岩 | 细砂级 沉凝灰岩 | 细砂级 凝灰质沉积岩 |
| 0.062 5~0.125 0 | 极细砂 |
| 粉砂 | 0.05~0.10 0.01~0.05 | 粗粉砂 细粉砂 | 0.031 3~0.062 5 | 粗粉砂 | 粉砂级 凝灰岩 | 粉砂级 沉凝灰岩 | 粉砂级 凝灰质沉积岩 |
| 0.015 6~0.031 3 | 细粉砂 |
| 黏土(泥) | <0.01 | 黏土(泥) | <0.015 6 | 黏土(泥) | 泥级 凝灰岩 | 泥级 沉凝灰岩 | 泥级 凝灰质沉积岩 |
), ArticleFig(id=1307264512755786743, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=CN, label=表1, caption=
鄂尔多斯盆地陇东地区延长组长7油层组碎屑岩颗粒粒级分类(据郑庆华,2017;Zheng et al.,2020修改)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 粒级类 | 陆源碎屑岩 | 凝灰质岩 |
|---|
| 十进制 | 2的几何数制 | 凝灰岩 | 沉凝灰岩 | 凝灰质沉积岩 |
|---|
| 粒径/mm | 粒级亚类 | 粒径/mm | 粒级亚类 |
|---|
| 砂 | 0.10~0.25 | 细砂 | 0.125~0.250 | 细砂 | 细砂级 凝灰岩 | 细砂级 沉凝灰岩 | 细砂级 凝灰质沉积岩 |
| 0.062 5~0.125 0 | 极细砂 |
| 粉砂 | 0.05~0.10 0.01~0.05 | 粗粉砂 细粉砂 | 0.031 3~0.062 5 | 粗粉砂 | 粉砂级 凝灰岩 | 粉砂级 沉凝灰岩 | 粉砂级 凝灰质沉积岩 |
| 0.015 6~0.031 3 | 细粉砂 |
| 黏土(泥) | <0.01 | 黏土(泥) | <0.015 6 | 黏土(泥) | 泥级 凝灰岩 | 泥级 沉凝灰岩 | 泥级 凝灰质沉积岩 |
), ArticleFig(id=1307264512835478520, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=EN, label=Table 2, caption=
Statistical table of rock type thickness described by geological logging company of Chang 7 oilmember of the Yanchang Formation, Longdong region, Ordos Basin
, figureFileSmall=null, figureFileBig=null, tableContent=
| 泥岩/m | 泥质 粉砂岩/m | 粉砂岩/m | 细砂岩/m | 钙质 细砂岩/m | 凝灰质岩/m |
|---|
黑色碳 质泥岩 | 灰黑色 泥岩 | 深灰色 泥岩 | 粉砂质 泥岩 | 凝灰岩 | 凝灰质泥岩 |
|---|
| 14.73 | 14.66 | 118.43 | 39.39 | 84.48 | 8.77 | 508.46 | 0.48 | 0.62 | 0.45 |
), ArticleFig(id=1307264512910975993, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=CN, label=表2, caption=
鄂尔多斯盆地陇东地区延长组长7油层组地质录井公司描述“岩石类型”厚度统计表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 泥岩/m | 泥质 粉砂岩/m | 粉砂岩/m | 细砂岩/m | 钙质 细砂岩/m | 凝灰质岩/m |
|---|
黑色碳 质泥岩 | 灰黑色 泥岩 | 深灰色 泥岩 | 粉砂质 泥岩 | 凝灰岩 | 凝灰质泥岩 |
|---|
| 14.73 | 14.66 | 118.43 | 39.39 | 84.48 | 8.77 | 508.46 | 0.48 | 0.62 | 0.45 |
), ArticleFig(id=1307264512978084858, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=EN, label=Table 3, caption=
Statistics table of rock type thickness described in this study of Chang 7 oil member of the Yanchang Formation, Longdong region, Ordos Basin
, figureFileSmall=null, figureFileBig=null, tableContent=
| 泥岩/m | 泥质 粉砂岩/m | 粉砂岩/m | 细砂岩/m | 钙质 细砂岩/m | 凝灰质岩/m |
|---|
黑色 页岩 | 灰黑—黑色 泥岩 | 浅灰—黑灰色泥岩 | 粉砂质 泥岩 | 泥级 凝灰岩 | 细砂级 凝灰岩 | 粉—细砂级 沉凝灰岩 |
|---|
| 23.09 | 7.63 | 42.62 | 39.42 | 78.5 | 13.01 | 559.33 | 7.51 | 6.61 | 10.19 | 2.56 |
), ArticleFig(id=1307264513053582331, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=CN, label=表3, caption=
鄂尔多斯盆地陇东地区延长组长7油层组本次研究描述“岩石类型”厚度统计表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 泥岩/m | 泥质 粉砂岩/m | 粉砂岩/m | 细砂岩/m | 钙质 细砂岩/m | 凝灰质岩/m |
|---|
黑色 页岩 | 灰黑—黑色 泥岩 | 浅灰—黑灰色泥岩 | 粉砂质 泥岩 | 泥级 凝灰岩 | 细砂级 凝灰岩 | 粉—细砂级 沉凝灰岩 |
|---|
| 23.09 | 7.63 | 42.62 | 39.42 | 78.5 | 13.01 | 559.33 | 7.51 | 6.61 | 10.19 | 2.56 |
), ArticleFig(id=1307264513124885500, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=EN, label=Table 4, caption=
Thickness of rock type combinations in 24 wells from Chang 7 oil member of the Yanchang Formation, Longdong region, Ordos Basin
, figureFileSmall=null, figureFileBig=null, tableContent=
岩石类型 组合形式 | 岩石类型组合 | 累计 厚度 /m | 岩石类型 组合形式 | 岩石类型组合 | 累计 厚度 /m |
|---|
| 主要岩石类型 | 次要岩石类型 | 主要岩石类型 | 次要岩石类型 |
|---|
| 单一型 | 黑色页岩 | 忽略 | 12.95 | 夹层型 | 钙质细砂岩 | 夹浅灰—黑灰色泥岩、粉砂质泥岩 | 1.19 |
| 灰黑—黑色泥岩 | 5.98 | 泥级凝灰岩 | 0.16 |
| 浅灰—黑灰色泥岩 | 29.53 | 粉砂质泥岩 | 0.08 |
| 粉砂质泥岩 | 29.41 | 合计 | 92.13 |
| 泥质粉砂岩 | 29.65 | 细砂岩 | 夹黑色页岩 | 33.48 |
| 粉砂岩 | 5.04 | 泥质粉砂岩 | 3.75 |
| 细砂岩 | 434.01 | 细砂级凝灰岩 | 1.73 |
| 钙质细砂岩 | 4.87 | 浅灰—黑灰色泥岩 | 0.49 |
| 细砂级凝灰岩 | 7.77 | 粉砂质泥岩 | 0.50 |
| 泥级凝灰岩 | 6.28 | 粉—细砂级沉凝灰岩 | 0.38 |
| 粉—细砂级沉凝灰岩 | 2.18 | 粉砂岩 | 0.06 |
| 合计 | 567.67 | 合计 | 40.39 |
| 含层型 | 细砂岩 | 含浅灰—黑灰色泥岩、粉砂质泥岩 | 16.04 | 浅灰—黑灰色泥岩 | 夹粉砂—细砂岩 | 10.18 |
| 泥质粉砂岩 | 5.12 | 粉砂质泥岩 | 6.34 |
| 钙质细砂岩 | 0.24 | 黑色页岩 | 3.97 |
| 合计 | 21.40 | 泥质粉砂岩 | 1.68 |
| 细砂岩 | 含黑色页岩 | 11.71 | 灰黑—黑色泥岩 | 1.32 |
| 钙质细砂岩 | 1.21 | 细砂岩 | 0.87 |
| 泥质粉砂岩 | 0.40 | 合计 | 24.36 |
| 细砂级凝灰岩 | 0.36 | 细砂岩 | 夹灰黑—黑色泥岩 | 5.56 |
| 粉砂岩 | 0.19 | 泥质粉砂岩 | 2.39 |
| 泥级凝灰岩 | 0.17 | 粉砂质泥岩 | 1.03 |
| 合计 | 14.04 | 粉砂岩 | 0.63 |
| 浅灰—黑灰色泥岩 | 含粉砂—细砂岩 | 1.75 | 合计 | 9.61 |
| 细砂岩 | 1.47 | 黑色页岩 | 夹泥级凝灰岩 | 4.27 |
| 黑色页岩 | 0.97 | 灰黑—黑色泥岩 | 0.18 |
| 粉砂质泥岩 | 0.74 | 浅灰—黑灰色泥岩 | 0.13 |
| 泥质粉砂岩 | 0.45 | 粉砂质泥岩 | 0.05 |
| 合计 | 5.38 | 合计 | 4.63 |
| 细砂岩 | 含灰黑—黑色泥岩 | 4.16 | 合计 | 171.12 |
| 泥质粉砂岩 | 0.53 | 互层型 | 泥质粉砂岩 | 与浅灰—黑灰色泥岩、粉砂质泥岩互层 | 2.36 |
| 细砂级凝灰岩 | 0.30 | 细砂岩 | 0.26 |
| 合计 | 4.99 | 合计 | 2.62 |
| 黑色页岩 | 含泥级凝灰岩 | 0.83 | 粉砂质泥岩 | 与粉砂—细砂岩互层 | 1.09 |
| 粉砂质泥岩 | 0.18 | 浅灰—黑灰色泥岩 | 0.54 |
| 灰黑—黑色泥岩 | 0.15 | 黑色页岩 | 0.10 |
| 合计 | 1.16 | 合计 | 1.73 |
| 合计 | 46.97 | 细砂岩 | 与黑色页岩互层 | 0.33 |
| 夹层型 | 细砂岩 | 夹浅灰—黑灰色泥岩、粉砂质泥岩 | 51.44 | 细砂级凝灰岩 | 0.03 |
| 泥质粉砂岩 | 32.17 | 合计 | 0.36 |
| 粉砂岩 | 7.09 | 合计 | 4.71 |
), ArticleFig(id=1307264513200382973, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=CN, label=表4, caption=
鄂尔多斯盆地陇东地区24口井延长组长7油层组岩石类型组合厚度统计表
, figureFileSmall=null, figureFileBig=null, tableContent=
岩石类型 组合形式 | 岩石类型组合 | 累计 厚度 /m | 岩石类型 组合形式 | 岩石类型组合 | 累计 厚度 /m |
|---|
| 主要岩石类型 | 次要岩石类型 | 主要岩石类型 | 次要岩石类型 |
|---|
| 单一型 | 黑色页岩 | 忽略 | 12.95 | 夹层型 | 钙质细砂岩 | 夹浅灰—黑灰色泥岩、粉砂质泥岩 | 1.19 |
| 灰黑—黑色泥岩 | 5.98 | 泥级凝灰岩 | 0.16 |
| 浅灰—黑灰色泥岩 | 29.53 | 粉砂质泥岩 | 0.08 |
| 粉砂质泥岩 | 29.41 | 合计 | 92.13 |
| 泥质粉砂岩 | 29.65 | 细砂岩 | 夹黑色页岩 | 33.48 |
| 粉砂岩 | 5.04 | 泥质粉砂岩 | 3.75 |
| 细砂岩 | 434.01 | 细砂级凝灰岩 | 1.73 |
| 钙质细砂岩 | 4.87 | 浅灰—黑灰色泥岩 | 0.49 |
| 细砂级凝灰岩 | 7.77 | 粉砂质泥岩 | 0.50 |
| 泥级凝灰岩 | 6.28 | 粉—细砂级沉凝灰岩 | 0.38 |
| 粉—细砂级沉凝灰岩 | 2.18 | 粉砂岩 | 0.06 |
| 合计 | 567.67 | 合计 | 40.39 |
| 含层型 | 细砂岩 | 含浅灰—黑灰色泥岩、粉砂质泥岩 | 16.04 | 浅灰—黑灰色泥岩 | 夹粉砂—细砂岩 | 10.18 |
| 泥质粉砂岩 | 5.12 | 粉砂质泥岩 | 6.34 |
| 钙质细砂岩 | 0.24 | 黑色页岩 | 3.97 |
| 合计 | 21.40 | 泥质粉砂岩 | 1.68 |
| 细砂岩 | 含黑色页岩 | 11.71 | 灰黑—黑色泥岩 | 1.32 |
| 钙质细砂岩 | 1.21 | 细砂岩 | 0.87 |
| 泥质粉砂岩 | 0.40 | 合计 | 24.36 |
| 细砂级凝灰岩 | 0.36 | 细砂岩 | 夹灰黑—黑色泥岩 | 5.56 |
| 粉砂岩 | 0.19 | 泥质粉砂岩 | 2.39 |
| 泥级凝灰岩 | 0.17 | 粉砂质泥岩 | 1.03 |
| 合计 | 14.04 | 粉砂岩 | 0.63 |
| 浅灰—黑灰色泥岩 | 含粉砂—细砂岩 | 1.75 | 合计 | 9.61 |
| 细砂岩 | 1.47 | 黑色页岩 | 夹泥级凝灰岩 | 4.27 |
| 黑色页岩 | 0.97 | 灰黑—黑色泥岩 | 0.18 |
| 粉砂质泥岩 | 0.74 | 浅灰—黑灰色泥岩 | 0.13 |
| 泥质粉砂岩 | 0.45 | 粉砂质泥岩 | 0.05 |
| 合计 | 5.38 | 合计 | 4.63 |
| 细砂岩 | 含灰黑—黑色泥岩 | 4.16 | 合计 | 171.12 |
| 泥质粉砂岩 | 0.53 | 互层型 | 泥质粉砂岩 | 与浅灰—黑灰色泥岩、粉砂质泥岩互层 | 2.36 |
| 细砂级凝灰岩 | 0.30 | 细砂岩 | 0.26 |
| 合计 | 4.99 | 合计 | 2.62 |
| 黑色页岩 | 含泥级凝灰岩 | 0.83 | 粉砂质泥岩 | 与粉砂—细砂岩互层 | 1.09 |
| 粉砂质泥岩 | 0.18 | 浅灰—黑灰色泥岩 | 0.54 |
| 灰黑—黑色泥岩 | 0.15 | 黑色页岩 | 0.10 |
| 合计 | 1.16 | 合计 | 1.73 |
| 合计 | 46.97 | 细砂岩 | 与黑色页岩互层 | 0.33 |
| 夹层型 | 细砂岩 | 夹浅灰—黑灰色泥岩、粉砂质泥岩 | 51.44 | 细砂级凝灰岩 | 0.03 |
| 泥质粉砂岩 | 32.17 | 合计 | 0.36 |
| 粉砂岩 | 7.09 | 合计 | 4.71 |
), ArticleFig(id=1307264513296851966, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=EN, label=Table 5, caption=
Physical properties of 11 rock types in Chang 7 oil member of the Yanchang Formation, Longdong region, Ordos Basin
, figureFileSmall=null, figureFileBig=null, tableContent=
| 物性参数 | 岩石类型 |
|---|
| 1类储层性 | 2类储层性 | 3类储层性 |
|---|
| 细砂岩 | 细砂级凝灰岩 | 粉—细砂级沉凝灰岩 | 粉砂岩 | 泥质粉 砂岩 | 钙质 细砂岩 | 泥级 凝灰岩 | 粉砂质 泥岩 | 浅灰—黑灰色泥岩 | 灰黑—黑色泥岩 | 黑色 页岩 |
|---|
| 孔隙度/% | 样品数 | 246 | 15 | 5 | 27 | 61 | 8 | 4 | 4 | / | / |
| 最大值 | 11.9 | 10.8 | 9.1 | 9.7 | 7.9 | 6.4 | 6.4 | 4.9 | / | / |
| 最小值 | 4.0 | 3.5 | 5.3 | 5.6 | 3.1 | 1.2 | 1.3 | 2.2 | / | / |
| 平均值 | 9.1 | 7.6 | 7.1 | 7.2 | 6.0 | 3.4 | 4.4 | 3.5 | 2.1 | 1.9 |
渗透率 /×10-3 μm2 | 样品数 | 234 | 14 | 5 | 27 | 61 | 8 | 4 | 4 | / | / |
| 最大值 | 0.77 | 0.80 | 0.72 | 0.12 | 0.13 | 0.05 | 0.04 | 0.03 | / | / |
| 最小值 | 0.10 | 0.01 | 0.03 | 0.01 | 0.006 | 0.01 | 0.005 | 0.004 | / | / |
| 平均值 | 0.20 | 0.22 | 0.23 | 0.04 | 0.03 | 0.02 | 0.02 | 0.01 | <0.01 | <0.01 |
| 储集能力分值/无量纲 | 5 | 4.5 | 4.5 | 4 | 3 | 2 | 2 | 1.5 | 1 | 1 |
), ArticleFig(id=1307264513380738047, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=CN, label=表5, caption=
鄂尔多斯盆地陇东地区延长组长7油层组11种岩石类型物性统计表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 物性参数 | 岩石类型 |
|---|
| 1类储层性 | 2类储层性 | 3类储层性 |
|---|
| 细砂岩 | 细砂级凝灰岩 | 粉—细砂级沉凝灰岩 | 粉砂岩 | 泥质粉 砂岩 | 钙质 细砂岩 | 泥级 凝灰岩 | 粉砂质 泥岩 | 浅灰—黑灰色泥岩 | 灰黑—黑色泥岩 | 黑色 页岩 |
|---|
| 孔隙度/% | 样品数 | 246 | 15 | 5 | 27 | 61 | 8 | 4 | 4 | / | / |
| 最大值 | 11.9 | 10.8 | 9.1 | 9.7 | 7.9 | 6.4 | 6.4 | 4.9 | / | / |
| 最小值 | 4.0 | 3.5 | 5.3 | 5.6 | 3.1 | 1.2 | 1.3 | 2.2 | / | / |
| 平均值 | 9.1 | 7.6 | 7.1 | 7.2 | 6.0 | 3.4 | 4.4 | 3.5 | 2.1 | 1.9 |
渗透率 /×10-3 μm2 | 样品数 | 234 | 14 | 5 | 27 | 61 | 8 | 4 | 4 | / | / |
| 最大值 | 0.77 | 0.80 | 0.72 | 0.12 | 0.13 | 0.05 | 0.04 | 0.03 | / | / |
| 最小值 | 0.10 | 0.01 | 0.03 | 0.01 | 0.006 | 0.01 | 0.005 | 0.004 | / | / |
| 平均值 | 0.20 | 0.22 | 0.23 | 0.04 | 0.03 | 0.02 | 0.02 | 0.01 | <0.01 | <0.01 |
| 储集能力分值/无量纲 | 5 | 4.5 | 4.5 | 4 | 3 | 2 | 2 | 1.5 | 1 | 1 |
), ArticleFig(id=1307264513456235520, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=EN, label=Table 6, caption=
Reservoir capacity calculating methods of rock type combinations in Chang 7 oil member of the Yanchang Formation, Longdong area, Ordos Basin
, figureFileSmall=null, figureFileBig=null, tableContent=
岩石类型 组合形式 | 岩石类型组合 | 储集能力分值系数/无量纲 | 主要岩石类型 储集能力分值 /无量纲 | 次要岩石类型储集能力值/无量纲 | 岩石类型组合储集能力值/无量纲 |
|---|
| 次要岩石类型1 | 次要岩石类型2 |
|---|
| 单一型 | *岩石类型见**岩石类型 | 0 | *岩石类型储集能力值×1 | 0 | 0 | 合计值 |
| *岩石类型见**岩石类型、***岩石类型 | 0 | *岩石类型储集能力值×1 | 0 | 0 | 合计值 |
| 含层型 | *岩石类型含**岩石类型 | 0.075 | *岩石类型储集能力值×(1-0.075) | **岩石类型储集能力值×0.075 | 0 | 合计值 |
| *岩石类型含**岩石类型、***岩石类型 | 0.075 | *岩石类型储集能力值×(1-0.075) | **岩石类型储集能力值 ×0.075×(2/3) | ***岩石类型储集能力值×0.075×(1/3) | 合计值 |
| 夹层型 | *岩石类型夹**岩石类型 | 0.25 | *岩石类型储集能力值×(1-0.25) | **岩石类型储集能力值×0.25 | 0 | 合计值 |
| *岩石类型夹**岩石类型、***岩石类型 | 0.25 | *岩石类型储集能力值×(1-0.25) | **岩石类型储集能力值 ×0.25×(2/3) | ***岩石类型储集能力值×0.25×(1/3) | 合计值 |
| 互层型 | *岩石类型与**岩石类型互层 | 0.45 | *岩石类型储集能力值×(1-0.45) | **岩石类型储集能力值×0.45 | 0 | 合计值 |
| *岩石类型与**岩石类型、***岩石类型互层 | 0.45 | *岩石类型储集能力值×(1-0.45) | **岩石类型储集能力值 ×0.45×(2/3) | ***岩石类型储集能力值×0.45×(1/3) | 合计值 |
), ArticleFig(id=1307264513519149056, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=CN, label=表6, caption=
鄂尔多斯盆地陇东地区延长组长7油层组岩石类型组合储集能力分值计算方法
, figureFileSmall=null, figureFileBig=null, tableContent=
岩石类型 组合形式 | 岩石类型组合 | 储集能力分值系数/无量纲 | 主要岩石类型 储集能力分值 /无量纲 | 次要岩石类型储集能力值/无量纲 | 岩石类型组合储集能力值/无量纲 |
|---|
| 次要岩石类型1 | 次要岩石类型2 |
|---|
| 单一型 | *岩石类型见**岩石类型 | 0 | *岩石类型储集能力值×1 | 0 | 0 | 合计值 |
| *岩石类型见**岩石类型、***岩石类型 | 0 | *岩石类型储集能力值×1 | 0 | 0 | 合计值 |
| 含层型 | *岩石类型含**岩石类型 | 0.075 | *岩石类型储集能力值×(1-0.075) | **岩石类型储集能力值×0.075 | 0 | 合计值 |
| *岩石类型含**岩石类型、***岩石类型 | 0.075 | *岩石类型储集能力值×(1-0.075) | **岩石类型储集能力值 ×0.075×(2/3) | ***岩石类型储集能力值×0.075×(1/3) | 合计值 |
| 夹层型 | *岩石类型夹**岩石类型 | 0.25 | *岩石类型储集能力值×(1-0.25) | **岩石类型储集能力值×0.25 | 0 | 合计值 |
| *岩石类型夹**岩石类型、***岩石类型 | 0.25 | *岩石类型储集能力值×(1-0.25) | **岩石类型储集能力值 ×0.25×(2/3) | ***岩石类型储集能力值×0.25×(1/3) | 合计值 |
| 互层型 | *岩石类型与**岩石类型互层 | 0.45 | *岩石类型储集能力值×(1-0.45) | **岩石类型储集能力值×0.45 | 0 | 合计值 |
| *岩石类型与**岩石类型、***岩石类型互层 | 0.45 | *岩石类型储集能力值×(1-0.45) | **岩石类型储集能力值 ×0.45×(2/3) | ***岩石类型储集能力值×0.45×(1/3) | 合计值 |
), ArticleFig(id=1307264513586257921, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=EN, label=Table 7, caption=
Reservoir capacity values of rock type combinations in Chang 7 oil member of the Yanchang Formation,Longdong region, Ordos Basin
, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 岩石类型组合 | 岩石类 型组合 储集能 力分值 | 岩石类型组合 储集 级别 | 序号 | 岩石类型组合 | 岩石类型组合储集能力分值 | 岩石类型组合储集 级别 |
|---|
| 1 | 细砂岩 | 5.00 | 1类 | 34 | 泥质粉砂岩夹黑色泥岩 | 2.50 | 3类 |
| 2 | 细砂岩含粉砂—细砂岩 | 4.95 | 35 | 泥质粉砂岩夹黑色页岩 | 2.50 |
| 3 | 细砂岩夹粉砂—细砂岩 | 4.83 | 36 | 粉砂质泥岩夹粉砂—细砂岩 | 2.21 |
| 4 | 细砂岩含浅灰—黑灰色泥岩、粉砂质泥岩 | 4.71 | 37 | 泥质粉砂岩与浅灰—黑灰色泥岩、粉砂质泥岩互层 | 2.18 |
| 5 | 细砂岩含黑色泥岩 | 4.70 | 38 | 泥级凝灰岩 | 2.00 | 4类 |
| 6 | 细砂岩含黑色页岩 | 4.70 | 39 | 钙质细砂岩 | 2.00 |
| 7 | 粉—细砂级沉凝灰岩 | 4.50 | 40 | 钙质细砂岩含浅灰—黑灰色泥岩、粉砂质泥岩 | 1.94 |
| 8 | 细砂级凝灰岩 | 4.50 | 41 | 泥级凝灰岩含黑色页岩 | 1.93 |
| 9 | 细砂级凝灰岩含黑色泥岩 | 4.24 | 42 | 钙质细砂岩含黑色页岩 | 1.93 |
| 10 | 细砂级凝灰岩含黑色页岩 | 4.24 | 43 | 灰黑—黑色泥岩夹粉砂—细砂岩 | 1.83 |
| 11 | 细砂岩夹浅灰—黑灰色泥岩、粉砂质泥岩 | 4.04 | 44 | 黑色页岩夹粉砂—细砂岩 | 1.83 |
| 12 | 细砂岩夹黑色泥岩 | 4.00 | 2类 | 45 | 浅灰—黑灰色泥岩夹粉砂—细砂岩 | 1.83 |
| 13 | 细砂岩夹黑色页岩 | 4.00 | 46 | 泥级凝灰岩夹浅灰—黑灰色泥岩、粉砂质泥岩 | 1.79 |
| 14 | 粉砂岩 | 4.00 | 47 | 钙质细砂岩夹浅灰—黑灰色泥岩、粉砂质泥岩 | 1.79 |
| 15 | 粉砂岩含黑色页岩 | 3.78 | 48 | 粉砂质泥岩含粉砂—细砂岩 | 1.71 |
| 16 | 粉—细砂级沉凝灰岩夹黑色页岩 | 3.63 | 49 | 粉砂质泥岩夹泥级凝灰岩 | 1.63 |
| 17 | 细砂级凝灰岩夹黑色页岩 | 3.63 | 50 | 粉砂质泥岩含泥级凝灰岩 | 1.54 |
| 18 | 泥质粉砂岩夹粉砂—细砂岩 | 3.33 | 51 | 粉砂质泥岩 | 1.50 |
| 19 | 粉砂岩夹浅灰—黑灰色泥岩、粉砂质泥岩 | 3.29 | 52 | 粉砂质泥岩夹浅灰—黑灰色泥岩、粉砂质泥岩 | 1.42 |
| 20 | 细砂岩与浅灰—黑灰色泥岩、粉砂质泥岩互层 | 3.28 | 53 | 粉砂质泥岩夹黑色泥岩 | 1.38 |
| 21 | 粉砂岩夹黑色泥岩 | 3.25 | 54 | 粉砂质泥岩夹黑色页岩 | 1.38 |
| 22 | 粉砂岩夹黑色页岩 | 3.25 | 55 | 浅灰—黑灰色泥岩夹泥级凝灰岩 | 1.25 |
| 23 | 细砂岩与黑色页岩互层 | 3.20 | 56 | 灰黑—黑色泥岩夹泥级凝灰岩 | 1.25 |
| 24 | 泥质粉砂岩含粉砂—细砂岩 | 3.10 | 57 | 黑色页岩夹泥级凝灰岩 | 1.25 |
| 25 | 泥质粉砂岩 | 3.00 | 3类 | 58 | 黑色页岩含粉砂—细砂岩 | 1.25 |
| 26 | 细砂级凝灰岩与黑色页岩互层 | 2.93 | 59 | 浅灰—黑灰色泥岩含粉砂—细砂岩 | 1.25 |
| 27 | 泥质粉砂岩含浅灰—黑灰色泥岩、粉砂质泥岩 | 2.86 | 60 | 灰黑—黑色泥岩含泥级凝灰岩 | 1.08 |
| 28 | 泥质粉砂岩含黑色泥岩 | 2.85 | 61 | 黑色页岩含泥级凝灰岩 | 1.08 |
| 29 | 泥质粉砂岩含黑色页岩 | 2.85 | 62 | 浅灰—黑灰色泥岩夹黑色页岩 | 1.00 |
| 30 | 粉砂质泥岩与粉砂—细砂岩互层 | 2.78 | 63 | 浅灰—黑灰色泥岩 | 1.00 |
| 31 | 泥质粉砂岩夹浅灰—黑灰色泥岩、粉砂质泥岩 | 2.54 | 64 | 灰黑—黑色泥岩 | 1.00 |
| 32 | 黑色页岩与粉砂—细砂岩互层 | 2.50 | 65 | 黑色页岩 | 1.00 |
| 33 | 浅灰—黑灰色泥岩与粉砂—细砂岩互层 | 2.50 |
), ArticleFig(id=1307264513661755394, tenantId=1146029695717560320, journalId=1301849983571558468, articleId=1307264251916219062, language=CN, label=表7, caption=
鄂尔多斯盆地陇东地区延长组长7油层组岩石类型组合储集能力分值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 岩石类型组合 | 岩石类 型组合 储集能 力分值 | 岩石类型组合 储集 级别 | 序号 | 岩石类型组合 | 岩石类型组合储集能力分值 | 岩石类型组合储集 级别 |
|---|
| 1 | 细砂岩 | 5.00 | 1类 | 34 | 泥质粉砂岩夹黑色泥岩 | 2.50 | 3类 |
| 2 | 细砂岩含粉砂—细砂岩 | 4.95 | 35 | 泥质粉砂岩夹黑色页岩 | 2.50 |
| 3 | 细砂岩夹粉砂—细砂岩 | 4.83 | 36 | 粉砂质泥岩夹粉砂—细砂岩 | 2.21 |
| 4 | 细砂岩含浅灰—黑灰色泥岩、粉砂质泥岩 | 4.71 | 37 | 泥质粉砂岩与浅灰—黑灰色泥岩、粉砂质泥岩互层 | 2.18 |
| 5 | 细砂岩含黑色泥岩 | 4.70 | 38 | 泥级凝灰岩 | 2.00 | 4类 |
| 6 | 细砂岩含黑色页岩 | 4.70 | 39 | 钙质细砂岩 | 2.00 |
| 7 | 粉—细砂级沉凝灰岩 | 4.50 | 40 | 钙质细砂岩含浅灰—黑灰色泥岩、粉砂质泥岩 | 1.94 |
| 8 | 细砂级凝灰岩 | 4.50 | 41 | 泥级凝灰岩含黑色页岩 | 1.93 |
| 9 | 细砂级凝灰岩含黑色泥岩 | 4.24 | 42 | 钙质细砂岩含黑色页岩 | 1.93 |
| 10 | 细砂级凝灰岩含黑色页岩 | 4.24 | 43 | 灰黑—黑色泥岩夹粉砂—细砂岩 | 1.83 |
| 11 | 细砂岩夹浅灰—黑灰色泥岩、粉砂质泥岩 | 4.04 | 44 | 黑色页岩夹粉砂—细砂岩 | 1.83 |
| 12 | 细砂岩夹黑色泥岩 | 4.00 | 2类 | 45 | 浅灰—黑灰色泥岩夹粉砂—细砂岩 | 1.83 |
| 13 | 细砂岩夹黑色页岩 | 4.00 | 46 | 泥级凝灰岩夹浅灰—黑灰色泥岩、粉砂质泥岩 | 1.79 |
| 14 | 粉砂岩 | 4.00 | 47 | 钙质细砂岩夹浅灰—黑灰色泥岩、粉砂质泥岩 | 1.79 |
| 15 | 粉砂岩含黑色页岩 | 3.78 | 48 | 粉砂质泥岩含粉砂—细砂岩 | 1.71 |
| 16 | 粉—细砂级沉凝灰岩夹黑色页岩 | 3.63 | 49 | 粉砂质泥岩夹泥级凝灰岩 | 1.63 |
| 17 | 细砂级凝灰岩夹黑色页岩 | 3.63 | 50 | 粉砂质泥岩含泥级凝灰岩 | 1.54 |
| 18 | 泥质粉砂岩夹粉砂—细砂岩 | 3.33 | 51 | 粉砂质泥岩 | 1.50 |
| 19 | 粉砂岩夹浅灰—黑灰色泥岩、粉砂质泥岩 | 3.29 | 52 | 粉砂质泥岩夹浅灰—黑灰色泥岩、粉砂质泥岩 | 1.42 |
| 20 | 细砂岩与浅灰—黑灰色泥岩、粉砂质泥岩互层 | 3.28 | 53 | 粉砂质泥岩夹黑色泥岩 | 1.38 |
| 21 | 粉砂岩夹黑色泥岩 | 3.25 | 54 | 粉砂质泥岩夹黑色页岩 | 1.38 |
| 22 | 粉砂岩夹黑色页岩 | 3.25 | 55 | 浅灰—黑灰色泥岩夹泥级凝灰岩 | 1.25 |
| 23 | 细砂岩与黑色页岩互层 | 3.20 | 56 | 灰黑—黑色泥岩夹泥级凝灰岩 | 1.25 |
| 24 | 泥质粉砂岩含粉砂—细砂岩 | 3.10 | 57 | 黑色页岩夹泥级凝灰岩 | 1.25 |
| 25 | 泥质粉砂岩 | 3.00 | 3类 | 58 | 黑色页岩含粉砂—细砂岩 | 1.25 |
| 26 | 细砂级凝灰岩与黑色页岩互层 | 2.93 | 59 | 浅灰—黑灰色泥岩含粉砂—细砂岩 | 1.25 |
| 27 | 泥质粉砂岩含浅灰—黑灰色泥岩、粉砂质泥岩 | 2.86 | 60 | 灰黑—黑色泥岩含泥级凝灰岩 | 1.08 |
| 28 | 泥质粉砂岩含黑色泥岩 | 2.85 | 61 | 黑色页岩含泥级凝灰岩 | 1.08 |
| 29 | 泥质粉砂岩含黑色页岩 | 2.85 | 62 | 浅灰—黑灰色泥岩夹黑色页岩 | 1.00 |
| 30 | 粉砂质泥岩与粉砂—细砂岩互层 | 2.78 | 63 | 浅灰—黑灰色泥岩 | 1.00 |
| 31 | 泥质粉砂岩夹浅灰—黑灰色泥岩、粉砂质泥岩 | 2.54 | 64 | 灰黑—黑色泥岩 | 1.00 |
| 32 | 黑色页岩与粉砂—细砂岩互层 | 2.50 | 65 | 黑色页岩 | 1.00 |
| 33 | 浅灰—黑灰色泥岩与粉砂—细砂岩互层 | 2.50 |
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