【摘要】 该文介绍了压力振荡法测试岩石渗透率的原理与应用,研制的双重介质岩心渗透率测定装置主要由超低渗岩心夹持器、正弦泵、围压泵、储液容器、数据采集及数据处理软件等组成。较好地解决了孔隙介质和裂隙介质的模拟、边界条件的模拟、超低渗透率测试等关键问题,测试范围广,自动化程度高。该系统可用以研究基于双重介质岩心的气相、液相超低渗透率的测试,气相渗透率测试范围为(1×10^-21×10^-7)×10^-3μm²,液相渗透率测试范围为(1×10^-21×10^-5)×10^-3μm²。更多还原

【Abstract】 In this paper, the principle of pressure oscillation testing and its application to rock permeability measurement are introduced.Then a dual core permeability measurement device is developed which is mainly composed of medium ultra-low permeability core gripper,sine and confining pressure pump, liquid storage container, data acquisition andprocessing software, etc. In this test system, the key issues including porous media and fracture media simulation,boundary condition simulation, ultra-low permeability measurement, etc. are solved,with wide measurement range and high automation. Finally, analysis demonstrate that the test system could be used in the study of gas phase and liquid phase testing ofdual medium cores with ultra-low permeability. A wide measurement range could be achieved which the gas phase permeability testing can reach to(1×10^-21×10^-7)×10^-3μm², while the liquid permeability testing can reach to(1×10^-21×10^-7)×10^-3μm².更多还原