低渗透油气藏岩石物性测试方法研究

Study on measuring petrophysical properties of low permeability reservoir

本文是在已研制的瞬时脉冲岩石物性测试装置与改进的渗透率常规稳流测试装置基础上,分别利用瞬时脉冲方法和稳流测试方法对大量的致密油藏岩们作了渗透率测试实验。相同测试条件下通过对两种方法的对比与统计分析,对低渗透油气藏岩石物性测试的实验方法给予了充分的论证。经大量实验研究表明:在模拟地层压力条件下,瞬时脉冲测试方法与常规稳流测试方法测得的渗透率相对误差极小,通常小于10％,证明这两种方法用于低渗透油气藏岩石物性测试具有较强的合理性。

A large number of tight rock samples are tested for permeability by use of instantaneous pulse device and normal streaming flow device. Test methods of these two devices are demonstrated for the same test conditions. Experimental study shows that, under simulated formation pressure, the relative error of measured permeability by the two methods is very little, usually less than 10% , showing rationality in testing petrophysical property of low permeability reservoirs.