新疆石油地质

新疆石油地质 ›› 2004, Vol. 25 ›› Issue (1): 22-25.

• 油气勘探 • 上一篇    下一篇

柴达木盆地断裂特征及其对油气分布的控制作用

陈少军1, 罗群2, 王铁成3, 胡勇3   

  1. 1.中国地质大学,北京100083;
    2.石油大学盆地与油藏研究中心，北京102249;
    3.中国石油青海油田分公司地质研究院,甘肃敦煌736202
  • 收稿日期:2002-12-18 出版日期:2004-02-01 发布日期:2020-08-06
  • 作者简介:陈少军4966-),男,吉林东风人,高级工程师,在读博士研究生,石油地质。联系电话:0438-6218254
  • 基金资助:
    国家973重大基础研究项目“中国典型叠合盆地油气聚散机理与定理研究”（编号61999043310)

Faulting Characteristics and Effects on Hydrocarbon Distribution in Qaidam Basin

CHEN Shao-jun1, LUO Qun2, WANG Tie-cheng3, HU Yong3   

  1. 1. China University of Geosciences, Beijing 100083, China;
    2. Research Center of Basin and Reservoir, University of Petroleum,Bejing 102249, China;
    3. Research Institute of Geology, Qinhai Oilfield Company, PethoChina, Dunhuang, Gansu 736202, China
  • Received:2002-12-18 Online:2004-02-01 Published:2020-08-06

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摘要： 基底断裂决定了基底构造格架和盆地的构造演化和沉积发育,盆地断裂分级控制作用明显,一级断裂控制着盆地的构造演化和沉积发育;二级断裂是划分构造单元和控制烃源岩区的重要界线;三级断裂明显地控制了各类构造圈闭带的形成和分布;四级断裂控制了局部构造圈闭的发育和演化;五级断裂对构造圈闭起破坏作用或将构造圈闭复杂化。共发育4类6种成因类型的断裂,它们控制了8种成因特征的构造圈闭类型,其中断展背斜、冲起构造和断滑背斜是最重要的油气圈闭类型。柴达木盆地腹地断裂构造带发育,目前勘探程度低,油气潜力大,位于烃源岩中心或附近的裂缝发育圈闭带)是取得勘探重大突破的最有利目标。

关键词: 柴达木盆地:断裂, 特征, 控制, 成因

Abstract: controlling roles of basinal fault can be div ided into the five classes: Class I fault controls the structural evolution and sedimentary develop-ment; Class II fault is as key boundary line for classification of the structural units and for controlling source rock provinces; Class III fault con-trols the formation and distribution of various structural traps; Class IV fault controls the development and evolution of local structural traps; andClass V fault is of destroy roles to the structural traps or make the structural traps complicated. There exist four types of faults or six originaltypes of faults, which control eight original types of structural traps, in which the most significant traps are fault-extending anticline, thruststructure and fault-slipping anticline ones. In the hinterland of this basin, there are developed fault structural belts with great hydrocarbon po-tentials and low extent of exploration efforts. The study shows that the trap belts with developed fractures in the center or surroundings of thesource rocks will be the most favorable targets for breakthrough of exploration.

Key words: Qaidam basin, fault, feature, control, origin

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