油气藏评价与开发 ›› 2022, Vol. 12 ›› Issue (1): 119-129.doi: 10.13809/j.cnki.cn32-1825/te.2022.01.010
收稿日期:
2021-11-12
出版日期:
2022-02-26
发布日期:
2022-03-24
作者简介:
高玉巧(1978—),女,博士,高级工程师,本刊第二届编委会委员,主要从事页岩气勘探开发研究。地址:江苏省南京市建邺区江东中路375号金融城9号楼,邮政编码:210019。E-mail: 基金资助:
GAO Yuqiao(),LIU Nana,ZHANG Peixian,HE Guisong,GAO Quanfang
Received:
2021-11-12
Online:
2022-02-26
Published:
2022-03-24
摘要:
通过野外剖面观察和实测,对重庆市綦江区安稳镇上奥陶统五峰组—下志留统龙马溪组页岩剖面进行了详细野外描述与实验分析等综合研究,安稳镇页岩剖面自下而上出露五峰组下部黑色硅质页岩、五峰组上部观音桥段深灰色介壳泥质灰岩、龙马溪组黑色页岩等岩性地层。主要有以下3点结论:①出露页岩段为当前勘探开发的主要层段,各项表征成藏条件的评价指标优越,TOC(总有机碳)含量为1.10 %~8.10 %,平均为3.40 %,有机质成熟度(Ro)平均为2.70 %,石英含量为33.90 %~56.60 %,平均为42.36 %,黏土含量为18.00 %~57.20 %,平均为42.62 %;②储集空间类型主要为微裂缝、有机质孔与无机质孔;③结合勘探开发实践,剖面五峰组—龙马溪组下部①—③小层黑色页岩为甜点段,是水平井轨迹有利穿行层段。
中图分类号:
高玉巧,刘娜娜,张培先,何贵松,高全芳. 重庆市綦江区页岩地质特征及其对页岩气勘探的启示[J]. 油气藏评价与开发, 2022, 12(1): 119-129.
GAO Yuqiao,LIU Nana,ZHANG Peixian,HE Guisong,GAO Quanfang. Geological characteristic and its implications of shale exploration in Qijiang, Chongqing, China[J]. Reservoir Evaluation and Development, 2022, 12(1): 119-129.
表1
重庆市綦江区安稳镇下志留统龙马溪组下部页岩化石带划分"
生物带 | 陈旭等,2015 | 金淳泰等,1982 |
---|---|---|
LM9 | Spirograptus turriculatus带 | |
LM8 | Stimulograptus sedgwickii带 | Monograptus sedgwickii带 |
LM7 | Lituigraptus convolutus带 | Oktavites communis带 |
LM6 | Demirastrites triangulatus带 | Demirastrites triangulates带 |
LM5 | Coronograptus cyphus带 | Pristiograptus leei带 |
LM4 | Cystograptus wesiculosus带 | Pristiograptus cyphus带 |
LM3 | Parakidogr acumlnatus带 | Orthograptus vesiculosus带 |
LM2 | Akidograptus acuminatus带 | Akidograptus acuminatus带 |
LM1 | Persculptogr persculptus带 | Glyptograptus persculptus带 |
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