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古油层识别技术主要分为三方面:一是高孔隙度和渗透率层段识别,二是残留烃数量分析,三是盆地流体历史模拟技术。含油包裹体颗粒指数和荧光颗粒定量技术分别采用显微岩石学和激光扫描分析方法,确定储集层中油包裹体的丰度,而储集层中油包裹体丰度反映它在地质历史中古含油饱和度。油层的含油包裹体颗粒指数值大于5%,并至少有一部分样品大于10%,水层的含油包裹体颗粒指数值小于1%。一些油层中含油包裹体颗粒指数高值缺乏指示了快速成藏或浅部成藏。在石油运移通道层段,含油包裹体颗粒指数值主体值为1%～5%,但这些层段在垂向上仅局部分布。含油包裹体颗粒指数和荧光颗粒定量技术可用于识别古油层,判识古油水界面,寻找再运移石油,确定天然气或凝析气藏早期是否存在早期石油充注事件,识别次生油藏,寻找下伏油藏,限定油气充注模式。
Paleo-reservoirs identification technology is mainly divided into three aspects: First, the identification of high porosity and permeability intervals, the second is the analysis of residual hydrocarbons, the third is the basin fluid history simulation technology. Oil inclusions particle index and fluorescence particle quantification techniques were used to determine the abundance of oil inclusions in reservoirs by micro-petrology and laser scanning analysis, respectively. The abundance of oil inclusions in reservoirs reflects the paleo-oil saturation in the geological history degree. The oil-bearing inclusions have a grain index value of greater than 5% and at least a portion of the sample is greater than 10% and the oil-bearing inclusions grain index of the water layer is less than 1%. The lack of high values for the grain-bearing oil-in-oil inclusions in some reservoirs indicates rapid or shallow accumulation. In the oil migration channel interval, the value of particle index of oil-bearing inclusions is 1% ~ 5%, but these intervals are only vertically distributed. Oil-bearing inclusions particle index and fluorescent particle quantification techniques can be used to identify paleo-oil reservoirs, identify paleo-oil-water interfaces, look for re-migrated oil, identify early oil charge events in natural gas or condensate gas reservoirs, identify secondary reservoirs, Find the underlying reservoir, limited oil and gas filling mode.