低渗透岩心启动压力测试研究
Guangdong Chemical Industry(2015)
Abstract
随着国内油气藏的开发,低渗透油藏所占比重逐渐增大,而低渗透油藏存在启动压力.启动压力的产生是由于边界层的存在和流体的塑性流动.文章采用稳态法和非稳态法测定了低渗透油藏岩心启动压力梯度.实验表明,在同一粘度情况下,启动压力梯度随岩心渗透率的增大而减小;稳态法较非稳态法易实现.
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