腐殖型凝析气的研究──以塔里木盆地为例

INVESTIGATION ON HUMIC TYPE GAS CONDENSATE —TAKING TARIM BASIN AS AN EXAMPLE

以往对凝析气的生成多以地球化学过程为研究重点，对生成物相态的物理过程很少作深入探讨。文中以烃类生成的热模拟实验获得的地球化学资料为基础，利用油藏工程中相态研究的方法，讨论凝析气生成模式。腐殖型源岩的兄为0．5％～1．9％的演化阶段，生成物的相态为凝析气相，在成藏过程中温度、压力变化不十分强烈的条件下，易于形成凝析气藏，塔里木盆地广泛分布的凝析气藏提供了良好的研究实例。

Schoars often focused their study of gas condensate generation on the geochemicalprocess while seldom made a thorough approach on the physical process of product phase. Basedon the geochemical data obtalned through therrnal simulating experiment of hydrmben generation, this paper discussed the medel of gas condensate generation by using the phase method inreservoir engineering. Preduct generated from humic type source rock between Ro=0.5 % and1 .9% is the gas condensate phase, and it is favorable to form gas condensate pool under thecase where the temperature and pressure do not change very intensively. The gas condensatends are widely distributed in Tdrim Basin, which may serve as gdri examples for the study.