应用全模拟实测相渗透率资料确定储层水饱和度上限值

为了确定储层水饱和度上限值，首次采用高温高压条件下岩心分析测试技术，在全模拟条件下分别测定了四川盆地不同地区，不同油藏和气藏岩心的油相和气相相渗透率，结合有关油气田岩心的油、水相对渗透率曲线得到Js⁴油藏、川西和川东T₃x²气藏储层产工业油、气的水饱和度上限值分别为50%、59%和56%。这些数值已有效应用于生产及油气藏的储量计算中。

CALCULATION OF THE UPPER LIMIT OF RESERVOIR WATER SATURATION WITH MEASURED RELATIVE PERMEABILITY UNDER FULL MODELING CONDITIONS

In order to determine the upper limit of reservoir water saturation, HTHP core test technologies are used for the first time to measure the oil and gas relative permeability of cores sampled from different oil and gas reservoirs at different areas of Sichuan Basin under full modeling conditions. In combination with the oil and water relative permeability curves of cores in this field, these test results are used to calculate the upper limits of water saturation for commercial production of oil and gas in the Js4 oil pool, and the T3x2 gas pools in the western and eastern Sichuan Basin, which are 50%, 59% and 56% respectively. These calculation results have been effectively applied to production and reserve estimation of oil and gas pools.