中文摘要：

探索惯例证明在 Tazhong 的志留纪烃累积高举是极其复杂的。我们的研究显示油和煤气的累积被有利外形和低液体潜力控制。在宏水平，在这的烃分发高举被结构的地区和沉积系统控制。在微水平，油出现被岩相和 petrophysical 外形统治。外形的控制在高孔和渗透控制烃累积被表达。而且，在 uplift 的宏油和煤气的分发被相对低的液体潜力也在本地高度影响，在很成功的井被定位的地方。这些井也是仔细与邻近的破裂有关。因此，在 Tazhong 的志留纪烃累积机制高举能如下被描述。由结构导致了，深并且 overpressured 液体与相对低的潜力和高孔和渗透通过差错移居了进沙身体。释放过压驱逐了油和气体进迫使正常的地区，并且烃被 overlying caprock 保存糟糕压缩了含碳、二叠的 mudstones。如此的机制反映有利外形和低潜在的控制烃累积。在 uplift 基于水库和商业井的统计分析，在在陷井和外形潜力索引的含有石油的性质之间的一种关系被建立，并且二个有利目标的预言被做。

英文摘要：

Exploration practices show that the Silurian hydrocarbon accumulation in the Tazhong Uplift is extremely complicated.Our research indicates that the oil and gas accumulation is controlled by favorable facies and low fluid potential.At the macro level,hydrocarbon distribution in this uplift is controlled by structural zones and sedimentary systems.At the micro level,oil occurrences are dominated by lithofacies and petrophysical facies.The control of facies is embodied in high porosity and permeability controlling hydrocarbon accumulation.Besides,the macro oil and gas distribution in the uplift is also influenced by the relatively low fluid potential at local highs,where most successful wells are located.These wells are also closely related to the adjacent fractures.Therefore,the Silurian hydrocarbon accumulation mechanism in the Tazhong Uplift can be described as follows.Induced by structures,the deep and overpressured fluids migrated through faults into the sand bodies with relatively low potential and high porosity and permeability.The released overpressure expelled the oil and gas into the normal-pressured zones,and the hydrocarbon was preserved by the overlying caprock of poorly compacted Carboniferous and Permian mudstones.Such a mechanism reflects favorable facies and low potential controlling hydrocarbon accumulation.Based on the statistical analysis of the reservoirs and commercial wells in the uplift,a relationship between oil-bearing property in traps and the facies-potential index was established,and a prediction of two favorable targets was made.