论文部分内容阅读
在准噶尔盆地陆东地区 ,纵向上存在两个流体动力系统 ,即下部高压流体动力系统和中上部正常 -低压流体动力系统 ,对下部高压流体动力系统 ,流体包裹体均一温度可用来确定油气成藏期 ,而对中上部正常 -低压流体动力系统 ,流体包裹体均一温度不适于用来确定油气成藏期 ,这主要由包裹体捕获时的流体动力学环境和相态不同所致。高压流体动力学环境中形成的包裹体在捕获时更易呈均一相 ,包裹体的均一温度可有效用于成藏期的判定 ,而在正常 -低压系统中形成的包裹体在捕获时有呈非均一相的可能 ,在此情况下 ,流体包裹体均一温度就无法用于成藏期的确定 ,在用包裹体均一温度判定成藏期时 ,结合具体的地质条件做具体分析是十分必要的。
In the eastern Junggar Basin, there are two hydrodynamic systems in the longitudinal direction, ie, the lower high-pressure fluid dynamic system and the middle-upper normal-low-pressure hydrodynamic system. For the lower high-pressure fluid dynamic system, the homogenization temperature of the fluid inclusions can be used to determine the hydrocarbon accumulation For the mid-upper normal-low-pressure fluid dynamic system, the homogenization temperature of fluid inclusions is not suitable for determining the hydrocarbon accumulation period, which is mainly caused by the difference of hydrodynamic environment and phase state when the inclusions are captured. The inclusions formed in the high-pressure hydrodynamic environment are more likely to be homogenous phase during trapping, and the homogenization temperature of the inclusions can be effectively used for the determination of hydrocarbon accumulation. However, the inclusions formed in the normal-low pressure system are non-aqueous In this case, the homogenization temperature of the fluid inclusions can not be used for the determination of hydrocarbon accumulation period. It is necessary to make a detailed analysis based on the specific geological conditions when the hydrocarbon accumulation period is determined by the homogenization temperature of the inclusions.