【摘要】 油气藏的物理模拟已成为深入揭示油气二次运移和聚集机理的一种极其重要的手段和方法,但由于有些物理模拟实验的物理模型无法准确反映地质历史时期的地下实际情况,导致对油气成藏基本原理的片面性认识。该文结合勘探实际资料对R.J.Cordell等关于油气运移和富集过程三个物理模拟和实验进行了探讨。详细讨论了砂岩透镜体成藏机理,提出并不是所有的夹在烃源岩中的渗透砂岩都能成藏,砂岩成藏的条件是有断层或裂缝发育带等有效地相互沟通。也指出"T"字型成藏模拟实验仅反映了在压力差作用下的渗流成藏过程,而没有反映以浮力为驱动力的成藏过程。提出了为了全面地认识油气藏成藏机理,应加强浮力流成藏实验。更多还原

【Abstract】 The physical simulation has already been an extremely method and way to discover the second migration and aggregation mechanism of oil and gas deeply.However,because the models of some physical simulation experiments cannot reflect the real conditions of the reservoir in its geological history,thus the wrong recognition of reservoir formation is caused.Combining with the practical data of exploration we have studied three physical simulations and experiments of R.J.Cordell et al.about the process of oil and gas migration and aggregation,and at the same time we also discussed the reservoir formation of sand lens.After having done this,we drew a conclusion that not all of the permeable sand rocks included in the hydrocarbon source rocks can be reservoirs,in order to form a reservoir,such necessary conditions as there being faults and fissures developing zones are needed,furthermore the faults and fissures must relate to each other.We drew a conclusion that the"T" model reservoir simulation experiment can only reflect the reservoir forming process mainly controlled by permeability under the difference of pressure,and cannot reflect that mainly controlled by buoyancy.The writers pointed out that we should strengthen the experiment of floating reservoir formation in order to recognize the reservoir formation mechanism thoroughly.更多还原