The saturation of these compartments with liquid hydrocarbons and the subsequent oil-to-gas reaction causes the expulsion of free water, resulting in a gas accumulation without gas-water interface.
It is a key question that exactitude recognition of interface between gas and oil and between oil and water in the oily construction.
正确识别含油气构造中的油、气、水分界面一直是含油气构造评价的一个关键问题。
3
Multiple tests can be performed to measure formation pressure, and the formation pressure gradient can be established, accordingly, interface between oil, gas and water can be identified.