惠州凹陷流体动力场研究方法及应用. (Chinese)

To address the problem that the distribution law of unconventional tight oil and gas reservoirs in the 1 luizhou Sag is unclear and the top and bottom boundaries are unknown, which seriously affects the exploration and development process, based on the data of logging, oil production testing and high-pressure llg injection, the lower limit of buoyant accumulation in the study area is determined by the combination of statistical analysis of reservoir properties and case study method, and the bottom limit of hydrocarbon accumulation is determined by the minimum flowing pore throat radius method and the potential difference method inside and outside the reservoir, and the free and restricted hydrodynamic fields in the 1 luizhou Sag are divided to find out the distribution boundaries of unconventional oil and gas reservoirs. The research results show that the lower limit of buoyant accumulation in 1 luizhou Sag is 3 500-4 000 m, the corresponding porosity is 8. 50%, and the permeability is 1.00 mD; the critical pore throat radius of the bottom limit of hydrocarbon accumulation is 0.032 5 |±m, the critical porosity is from 1. 72% to 2. 00%, and the corresponding depth bottom limit is 6 000 to 6 500 m. The research results point to the direction for opening up new oil and gas exploration areas in the 1 luizhou Sag and finding new oil and gas exploration targets and alternative resources. [ABSTRACT FROM AUTHOR]

惠州凹陷深层非常规致密油气藏分布规律不清、顶底界限不明, 严重影响勘探开发进程, 针对该问题, 以测井、试油、高压压汞等资料为基础, 综合采用储层物性统计分析和实例剖析法 确定研究区浮力成藏下限, 采用最小流动孔喉半径法和储层内外势差法确定油气成藏底限, 对 惠州凹陷自由流体动力场和局限流体动力场进行划分, 明确非常规油气藏分布界限。研究结 果表明：惠卅凹陷浮力成藏下限为3 500-4 000 m,对应孔隙度为& 50%、渗透率为1. 00 mD; 油气成藏底限临界孔喉半径为0. 032 5 jim,临界孔隙度为1. 72%-2. 00%、对应的深度底限为 6 000 - 6 500 mo研究结果为惠州凹陷开拓新的油气勘探领域, 寻找新的油气勘探目标和接替 资源指明了方向. [ABSTRACT FROM AUTHOR]

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