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[1]徐彬,李建明,张永庶,等.T-R旋回层序在陆相盐湖盆地中的应用——以柴西南英西地区下干柴沟组上段为例[J].断块油气田,2020,27(04):412-417.[doi:10.6056/dkyqt202004002]
 XU Bin,LI Jianming,ZHANG Yongshu,et al.Application of T-R cycle sequence in continental salt lake basin: a case study of Upper Member of Lower Ganchaigou Formation in Yingxi area, southwestern Qaidam Basin[J].Fault-Block Oil and Gas Field,2020,27(04):412-417.[doi:10.6056/dkyqt202004002]
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T-R旋回层序在陆相盐湖盆地中的应用 ——以柴西南英西地区下干柴沟组上段为例(PDF)
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《断块油气田》[ISSN:1005-8907/CN:41-1219/TE]

卷:
27
期数:
2020年04
页码:
412-417
栏目:
默认栏目
出版日期:
2020-07-25

文章信息/Info

Title:
Application of T-R cycle sequence in continental salt lake basin: a case study of Upper Member of Lower Ganchaigou Formation in Yingxi area, southwestern Qaidam Basin
作者:
徐彬1李建明23张永庶4崔俊4
1.中国石油大学(华东)地球科学与技术学院,山东 青岛 266580;2.长江大学地球科学学院,湖北 武汉 430100;3.非常规油气湖北省协同创新中心,湖北 武汉 430100;4.中国石油青海油田分公司勘探开发研究院,甘肃 敦煌 736202
Author(s):
XU Bin1 LI Jianming23 ZHANG Yongshu4 CUI Jun4
1.School of Geosciences, China University of Petroleum, Qingdao 266580, China; 2.School of Geosciences, Yangtze University, Wuhan 430100, China; 3.Hubei Cooperative Innovation Center of Unconventional Oil and Gas, Wuhan 430100, China; 4.Exploration and Development Research Institute, Qinghai Oilfield Company, PetroChina, Dunhuang 736202, China
关键词:
T-R旋回层序盐湖盆地下干柴沟组上段英西地区
Keywords:
T-R cycle sequence salt lake basin Upper Member of Lower Ganchaigou Formation Yingxi area
分类号:
-
DOI:
10.6056/dkyqt202004002
文献标志码:
A
摘要:
综合分析钻井、测井、岩心等资料,对柴西南英西地区下干柴沟组上段进行了层序界面识别及层序特征分析,在此基础上建立了层序地层格架与层序发育模式,研究了有利储层分布位置。结果表明:层序发育受控于构造运动、古气候变化及湖平面升降;下干柴沟组上段自下而上可划分为2个三级层序,并进一步细分为6个四级层序,各级层序界面主要为岩性突变面,各级层序均发育湖侵体系域与湖退体系域,并均具有快速湖侵、缓慢湖退的特征;SQ3—SQ4表现为早期湖侵、中后期持续湖退,沉积相由半深湖亚相逐渐转变为盐湖亚相,SQ4发育大量岩盐盖层;有利储层主要发育于湖退体系域中部。
Abstract:
Based on the analysis of drilling, logging and core data, the sequence interface was identified, and the characteristics of sequence were analyzed in the Upper Member of Lower Ganchaigou Formation in Yingxi area. On this basis, the sequence stratigraphic framework and sequence development model were established to study the distribution of favorable reservoir. The results show that sequence development was controlled by tectonic movement, paleoclimate change and lake-level fluctuation. The researched formation can be divided into two third-order sequences from bottom to top, and further subdivided into six fourth-order sequences. The sequence interfaces at all orders are mainly lithological mutation surfaces. The lacustrine transgressive system tract(LTST) and lacustrine regressive system tract(LRST) were developed in all orders of sequences; they all have the characteristics of rapid lacustrine transgression and slow lacustrine regression. From SQ3 to SQ4, it shows lacustrine transgression in the early stage and continuous lacustrine regression in the middle-late stage. The sedimentary facies gradually changed from semi-deep lake to salt lake, and a large number of evaporite caprocks developed in SQ4. The favorable reservoirs were mainly developed in the middle of the lacustrine regressive system tract.

参考文献/References:

相似文献/References:

[1]高渐珍,薛国刚,徐田武,等.东濮凹陷沙河街期盐湖盆地充填演化模式[J].断块油气田,2012,19(05):550.[doi:10.6056/dkyqt201205002]
 Gao Jianzhen,Xue Guogang,Xu Tianwu,et al.Filling and evolution pattern of salt?鄄lake basin at Shahejie Formation depositional stage in Dongpu Depression[J].Fault-Block Oil and Gas Field,2012,19(04):550.[doi:10.6056/dkyqt201205002]

备注/Memo

备注/Memo:
更新日期/Last Update: 2020-07-24