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厘定了高效气源灶的概念和评价指标。高效气源灶是指具有一定分布范围的高有机质丰度气源岩在特定的热力或生物化学营力作用下高效生气,且这一过程与天然气聚集成藏作用在时、空间有良好耦合关系,从而在大中型气藏形成中高效发挥作用的气源灶。包含两方面涵义,生气的物质基础和生气的热动力学过程。因此,评价指标从三方面考虑,一是气源灶生气强度大,这里沿用戴金星提出的形成大中型气田的评价指标,大于20×108m3/km2;二是主生气期的作用时间短,通过Ⅰ、Ⅱ、Ⅲ型气源岩及原油的生烃动力学研究,以及对我国主要含气盆地气源灶主生气期作用时间统计分析,确定主生气期作用时间小于40Ma,尤以小于20Ma为优;三是主生气期完成时刻距今的时间晚,晚期成藏有利于天然气的保存。高效气源灶对形成高效气藏的贡献在于单位时间内供气数量大,以及由此产生的高效运聚作用和天然气散失数量少等。根据源岩母质类型和生气的动力学过程,我国有三类六种高效气源灶。
Set the concept of high-efficiency gas stove and evaluation index. High-efficiency gas source stove refers to a certain distribution range of high organic matter abundance gas source rock in a specific heat or biochemical camp power efficient angry, and this process and the accumulation of natural gas accumulation in time and space have a good coupling relationship , So as to form a gas source stove that efficiently functions in large and medium-sized gas reservoirs. Contains two aspects of the meaning, the material basis of angry and angry thermodynamic process. Therefore, the evaluation index is considered from three aspects: firstly, the intensity of gas source gas stove is large; here, the evaluation index for forming large and medium gas fields proposed by Dai Venus is greater than 20 × 108m3 / km2; second, the action period of main gas generation period is short, The hydrocarbon generation kinetics of type Ⅰ, Ⅱ and Ⅲ gas source rocks and crude oil, and the statistical analysis of the main gas-generating period of gas source gas stoves in China’s major gas basins indicate that the main gas-forming period is less than 40Ma, especially less than 20Ma The third is the time of completion of the main gas generation period late, the late accumulation is conducive to the preservation of natural gas. The contribution of high-efficiency gas stoves to the formation of high-efficiency gas reservoirs lies in the large quantity of gas supply per unit time and the resulting high efficiency of mobilization and natural gas loss. According to the source rock parent material type and angry kinetic process, there are three types of six kinds of efficient gas stoves in our country.