西南石油大学学报(自然科学版) ›› 2012, Vol. 34 ›› Issue (3): 56-64.

• 地质勘探 • 上一篇    下一篇

塔河油田 XX 井区白垩系层序—古地理特征

王 峻1,2,刘家铎1,2,王元君1   

  1. 1.“油气藏地质及开发工程”国家重点实验室 · 成都理工大学,四川 成都 6100592. 成都理工大学沉积地质研究院,四川 成都 610059
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-06-01 发布日期:2012-06-01

Sequence and Palaeo-geography Features of Cretaceous inXX Area,Tahe Oilfield

Wang Jun1,2, Liu Jiaduo1,2, Wang Yuanjun1

  

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitaton,Chengdu University of Technology,Chengdu,Sichuan 610059,China2. Institute of Sedimentary Geology,Chengdu University of Technology,Chengdu,Sichuan 610059,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-06-01 Published:2012-06-01

摘要:
要:在分析钻井、测井资料的基础上,采用井—震结合的方法对塔河油田西北部白垩系高分辨率层序地层和古地
理进行了研究,将白垩系划分为 1 个巨旋回、3 个超长期旋回、6 个长期旋回、16 个中期旋回层序。总体上显示为水进
到水退的沉积旋回,可识别出辫状河三角洲、曲流河三角洲和湖泊 3 种沉积沉积体系,代表了湖盆演化所形成的 3 个
阶段。综合地震属性分析,探讨了各长期旋回层序古地理特征,本区白垩系物源主要由古天山提供,沉积相带主要呈
南北向展布,各类砂体向南部逐渐尖灭,受现今南高北低的构造格局控制,易形成构造—岩性复合圈闭。

关键词: 关键词:塔河油田, 白垩系, 高分辨率层序, 沉积体系, 古地理

Abstract: Abstract:Based on drilling and logging data analysis,this paper studies the high-resolution sequence stratigraphy and palaeo-
geography of Cretaceous in northwest Tahe Oilfield by combining wells with seismic data. The Cretaceous can be classified
into 1 huge cycle,3 super-long-term cycles,6 long-term cycles and 16 medium-term cycle sequence,shown as transgressive
to regressive sedimentary cycle,where 3 kinds of sedimentary systems can be recognized;braided river delta,meandering
river delta and lacustrine deposit,representing 3 periods during lake basin evolution. The palaeo-geography features of each
long term cycle sequence are also discussed by combing with seismic properties analysis. The source of Cretaceous in this area
mainly came from ancient Tianshan Mountains,with sedimentary facies belt distributed as south-north direction. Various sand
bodies gradually pinch-out southwards and are prone to form structure-lithology composite trap since they are controlled by the
modern structural pattern of“the south part being higher than the north”.

Key words: Key words:Tahe Oilfield, Cretaceous, high-resolution sequence, sedimentary system, palaeo-geography