An oil reservoir with a free gas cap that supplies the energy to sweep the oil through the reservoir rock into the Wells.

具有游离气顶的油藏。气顶供给驱扫能量，使油经储层岩石流入井内。

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Gas may be found either dissolved in reservoir fluids or as free gas that tends to form a gas cap beneath the top seal on the reservoir trap.

气体可能在储层流体中以溶解形式或作为游离气而存在，游离气趋于在储层圈闭的盖层下面形成气顶。

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