火山热液活动对烃源岩生排烃的作用—以东营凹陷西部沙三段为例  

Effect of volcanic hydrothermal fluid activities on hydrocarbon generation and expulsion from source rocks-taking Es_3 of the western Dongying sag as example

作　　者：翟庆龙[1] 

机构地区：[1]胜利油田有限公司勘探监理部

出　　处：《油气地质与采收率》2003年第3期11-13,共3页Petroleum Geology and Recovery Efficiency

基　　金：国家自然基金 (40 2 72 0 61 );石油大学 2 1 1科研基金 (ZX - 99- 0 9)项目部分成果

摘　　要：火山活动带来大量的高温、高压地幔热液。热液改变了局部的温度场、压力场和化学场,加速了烃源岩有机质的成熟和演化,促进油气从烃源岩排出和运移,还为烃源岩带来了CH4 和H2 等气体,既使有机质成烃演化得到加氢作用,又使油气密度和粘度下降,有利于运移。火山热液中的高温酸性组分(H2 S ,SO2 ,HF和HCl等)以及过渡金属元素可促进干酪根中碳-氧键、碳-硫等键的断裂,对油气生成具有催化作用。Volcanic activity brings a lot of mantle hydrothermal fluid with high temperature and pressure. The hydrothermal fluid changes partial fields of temperature, pressure and chemistry, makes source rocks mature and evolution more quickly, promotes explusion and migration of hydrocarbons from the source rocks, brings gas of H 2 , CH 4 and so on for the source rocks. It gets hydrogenation act on hydrocarbongeneration evolution of organic matter, and makes the reduction of hydrocarbon density and viscosity in favor of migration. Acidic components with high temperature (H 2 S, SO 2 , HF, HCl and so on) and transitional metal elements in the volcanic hydrothermal fluid may promote the bond fission of C-O and C-S in kerogen, and has catalytic action on hydrocarbon generation.

关 键 词：火山热液 烃源岩 油气生成 催化作用 生烃演化 生油层 

分 类 号：P618.130.1[天文地球—矿床学]