准噶尔盆地克-百地区中生界输导层及物性下限与成藏关系

The Lower Limit Values of Physical Properties for the Mesozoic Hydrocarbon Carrier Beds in the Karamay-Baikouquan Area and Their Relation with Petroleum Accumulation

渗透性地层称为输导层,它是油气运移的通道。输导层的油气输导能力与岩层物性有密切关系。物性越好,输导能力越强,物性越差,输导能力越差。通过克-百地区中生界输导层的研究,油气输导层的物性下限不是一个固定值,输导物性下限与埋深、原油性质和总体物性条件有关。输导层的分布直接控制油藏的分布,只有分布在有效输导层上的圈闭才能形成油藏。

The porous permeable strata are called carrier beds. They are the pathways for hydrocarbon migration. The transporting capacity of the carrier beds is related with the physical properties of the rocks. The better the physical property is, the stronger the transporting capacity is. Otherwise, the wo^e the physical property is, the weaker the transporting capacity is. Based on the analysis of the Mesozoic carrier beds in Karamay and Baikouquan area it is determined that the lower limit values of physical properties for the hydrocarbon carrier beds are not the fixed numbe~. They are related with the burial depth, oil properties and the deposit conditions. The distribution of the carrier beds has a direct control on the distribution of petroleum reservoirs. Only if the traps are distributed on the carrier beds nicely, they can become the reservoirs.