西南石油大学学报(自然科学版) ›› 2012, Vol. 34 ›› Issue (1): 34-40.

• 地质勘探 • 上一篇    下一篇

准噶尔盆地陆西地区石炭系火山岩有利区分析

牟中海1,刘得光2,唐勇2   

  1. 1. 西南石油大学资源与环境学院,四川成都6105002. 中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-02-01 发布日期:2012-02-01

Analysis of Carboniferous Favorable Place of Volcanic Rockin Luxi Area,Junggar Basin

Mu Zhonghai1, Liu Deguang2, Tang Yong2   

  1. 1. School of Resource and Environment,Southwest Petroleum University,Chengdu,Sichuan 610500,China2. Research Institute of Exploration and Development,Xinjiang Oilfieid Company,PetroChina,Karamay,Xinjiang 834000,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-02-01 Published:2012-02-01

摘要: 通过对陆西地区石炭系火山岩岩性特征、岩相展布、构造演化过程、裂缝分布规律、已知含油气层分布区、岩
性与油气层的关系、不同岩性岩相的物性特征、烃源条件等进行分析,认为陆西石炭系存在上、下两个层序,这两个层
序的顶界均为区域性不整合面;火山岩相主要有火山通道相、爆发相、溢流相和火山沉积相等4 种类型,不同层序相分
布有所不同;陆梁隆起的雏形形成于中海西运动第一幕,晚海西期得到定型与加强;上层序物性最好的岩相是溢流相,
其次是爆发相,物性最好的岩性是玄武岩,其次是火山角砾岩;有利储层分布区有两个,一个位于夏盐凸起东部的夏盐
1—石南3 井区,另一个位于夏盐凸起西部及三个泉凸起区;陆西地区的烃源主要来源于玛湖凹陷。最后指出陆西石
炭系油气勘探的有利区主要位于夏盐凸起与三个泉凸起的西部。

关键词: 准噶尔盆地, 陆西地区, 火山岩相, 裂缝, 有利勘探区

Abstract: Based on the analysis of Carboniferous igneous lithological character and its lithofacies distribution,structural
evolutional process,fracture distribution law,known petroliferous and gas distribution area,relationship between lithological
character and oil-gas formation,physical properties of different lithological character and lithofacies,conditions of hydrocarbon
source. It is believed that in Carboniferous system where exist two sequences which are an upper sequence and a lower one at
Luxi area of Junggar Basin,and the superfaces of these sequences are regional unconformities. There are mainly four kinds
igneous lithofacies which are volcanic conduit facies,explosive rock facies,overflow facies,and volcanogenic sedimentation
facies,which distribute among different sequences. The embryonic form of Luliang uplift began at stage I of Mid-Hercynian
phase,and formed and strengthened at late-Hercynian phase. The best physical properties of lithofacies is the overflow facies,
the second one is explosive rock facies. The best physical properties of lithological character is basalt,the second one is volcanic
breccia. There are two favorable reservoir areas in Luxi,one locates at Xiayan 1 to Shinan 3 of the East Xiayan salient,and the
other one located at the West Xiayan salient and Sangequan salient. Hydrocarbon of Luxi came mainly from Mahu sag. This
paper presents that the oil and gas favorable places for prospecting mainly located at west areas of Xiayan salien and Sangequan
salient.

Key words: Junggar Basin, Luxi Area, volcanic phase, fracture, favorable places for prospecting

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