柴西北区碱1 井下干柴沟组上段高频层序特征

西南石油大学学报(自然科学版) ›› 2012, Vol. 34 ›› Issue (5): 31-41.

柴西北区碱1 井下干柴沟组上段高频层序特征

裴明利1，2，王华1，陈琰3，曹正林2，雷光3

1. 中国地质大学（武汉）资源学院，湖北武汉4300742. 中国石油勘探开发研究院西北分院，甘肃兰州7300203. 中国石油青海油田公司勘探开发研究院，甘肃敦煌736202

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-10-01 发布日期:2012-10-01

High–frequency Base Level Cycle Sequence Feature for the UpperMember of the Lower Ganchaigou Formation of Well Jian1 inNorthwestern Qaidam Basin

Pei Mingli1，2, Wang Hua1, Chen Yan3, Cao Zhenglin2, Lei Guang3

1. Faculty of Resources，China University of Geosciences，Wuhan，Hubei 430074，China2. Northwest Branch，Research Institute of Exploration & Development，PetroChina，Lanzhou，Gansu 730020，China3. Research Institute of Petroleum Exploration and Development，Qinghai Oilfield Company，PetroChina，Dunhuang，Gansu 736202，China

Received:1900-01-01 Revised:1900-01-01 Online:2012-10-01 Published:2012-10-01

摘要/Abstract

摘要： 依据柴达木盆地古近系咸水湖盆湖泊沉积发育特征，建立了碱1 井下干柴沟组上段E23
滨浅湖沉积模式，总结
了滩坝砂沉积的7 种微相发育特征，归纳出对应于湖平面上升至高水位期和湖平面下降至低水位期两类滨浅湖沉积
微相组合体系。应用陆相高分辨率层序地层学原理，构建了碱1 井E23
的基本旋回模式，划分了69 个短期旋回、4 个中
期旋回和2 个长周期旋回，总结了高频基准面旋回层序地层的成因和特征，并探讨湖相碳酸盐岩沉积在高分辨率层序
地层研究中的意义，为揭示柴达木盆地西部古近系干旱环境下的层序地层基本特征奠定良好基础。

关键词: 柴西北区, 碱1 井, 下干柴沟组上段, 滨浅湖沉积微相, 高频基准面旋回层序

Abstract: According to sedimentary features of Tertiary saline lake of Qaidamu Basin，shore–shallow lake sedimentary pattern
for the upper member of the lower Ganchaigou Formation（E23
）of Well Jian1 was established. Based on the summary about
characteristic of seven types of microfacies for beach–bar sedimentary region，two kinds of assembled system for shore–shallow
lake sedimentary microfacies are concluded，separately corresponding with lake–level movement two–period of lake–level
rising to highstand and lake–level falling to lowstand. By applying of the high resolution sequence stratigraphic theory and
method about terrene and construction of the basic base level cycle pattern，69 short period cycles or 4 middle period cycles
or 2 long period cycles for the upper member of the lower Ganchaigou Formation of Well Jian1 are built up. By analyzing
the genesis and feature of the high–frequency base level cycle sequences，the significance of carbonate sedimentary under
lacustrine environment in study of the high resolution sequence stratigraphy is further discussed. The results of research in this
study may deliver important geological information for the basic feature of the sequence stratigraphy under the arid environments
of Paleogene System in Qaidam Basin.

Key words: northwestern Qaidam Basin, Well Jian1, the upper member of the lower Ganchaigou Formation, shore-shallowlake sedimentary microfacies, high-frequency base level cycle sequence

裴明利;王华;陈琰;曹正林;雷光. 柴西北区碱1 井下干柴沟组上段高频层序特征[J]. 西南石油大学学报(自然科学版), 2012, 34(5): 31-41.

Pei Mingli;Wang Hua;Chen Yan;Cao Zhenglin;Lei Guang. High–frequency Base Level Cycle Sequence Feature for the UpperMember of the Lower Ganchaigou Formation of Well Jian1 inNorthwestern Qaidam Basin[J]. 西南石油大学学报(自然科学版), 2012, 34(5): 31-41.