一种有效追踪油气运移轨迹的新方法——断面优势运移通道的提出及其应用  

A New Method for Effective Trace Petroleum Migration Path ——Concept of Fault Section Dominant Migrating Channel and Its Application

作　　者：罗群[1] 庞雄奇[1] 姜振学[1] 

机构地区：[1]石油大学盆地与油藏研究中心

出　　处：《地质论评》2005年第2期156-162,共7页Geological Review

基　　金：国家 973重大基础研究项目 (编号 619990 43 3 10 );中国博士后科学基金 (编号 PX0 60 696)资助的成果。

摘　　要：作为油气运移的重要通道 ,断裂的不同部位对油气的输导能力具有很强的不均一性 ,从而造成沿油源断裂分布的油气圈闭具有明显的油气差异聚集结果。断面优势运移通道的提出改变了以往人们认为开启的断裂都是油气运移通道的错误观念 ,强调只有沿着断面优势运移通道寻找勘探目标 ,才可能发现油气藏。本文通过分析断裂带输导能力的不均一性 ,提出断面优势运移通道概念及其油气汇聚运移原理 ,断面优势运移通道分析步骤和方法 ,并以柴达木盆地北缘几条主要的控油气断裂为例 ,分析了不同部位油气运移的优势运移通道并对其附近的油气圈闭含油气性进行了评价 ,结果与勘探成果相符。The different part of a fault has different capability carrying petroleum to migrate, although the fault is one of the most important petroleum migrating channel. This results a various petroleum accumulation difference in the traps distributing along the same fault. The concept of fault section dominant migrating channel changes the error viewpoint of “each part of the whole opening fault are all the petroleum migrating path”, this paper emphasizes that exploration maybe find petroleum accumulation only according the fault section dominant migrating channel, and point out the concept of fault section dominant migrating channel and its principle accumulating petroleum to carrying it as well as its study method by analysis the non-homogeneous of fault zone carrying petroleum capability. At last, this paper use the method to analysis the main controlling petroleum faults features of carrying petroleum to migrating in the north margin of Qaidm Basin, and point out the petroleum migrating dominant channel in these faults and appraise some traps distributing along these faults, the results of studying and appraising are unanimous conclusion with the exploration.

关 键 词：优势 断面 柴达木盆地北缘 应用 轨迹 追踪 油气运移通道 不均一性 油气圈闭 不同部位 断裂分布 错误观念 勘探目标 分析步骤 含油气性 勘探成果 油气藏 断裂带 能力 气差 油源 

分 类 号：P618.13[天文地球—矿床学]