岩心气体孔渗联测仪是一种岩心物性分析性仪器，可为石油、地质、煤矿等行业的科研单位提供可靠的岩心渗透率、孔隙度分析依据，该仪器具有性能稳定，数据自动采集、处理，操作简便，测定速度快等优点。
本产品可同时测量岩心的孔隙度和渗透率，也可单独测量其中某一项。仪器的检测、测试、数据处理、打印报告全过程均由计算机控制，自动完成，开关阀计算机控制，调压采用手动控制。
孔隙度测量部分由压力调节器、容器、标准室、岩样杯组成，压力传感器和压力表同时显示岩样固相及孔隙体积测定过程，并和微机、形成闭路控制。孔隙度的测定原理依据波义尔定律，由微机处理显示测定结果。
渗透率系统由压力调节器、干燥过滤器、流量传感器、压力传感器等组成。微机自动跟踪采集测定过程的压力、流量信息。渗透率的测定原理依据达西定律，由微机处理显示测定结果。
数据采集系统可用于采集压力、流量的数值，并由计算机处理与渗透率、孔隙度相关的数据。
岩心气体孔渗联测仪主要技术指标：
适用岩心：Ф50、Ф70、Ф75、Ф100、Ф105
测量压力：600KPa
工作介质：氦气、氮气
测量精度：0.5%
环压：0～4Mpa
操作：
1．将岩心装入岩心夹持器，顶紧
2．操作手动增压泵，至所需环压值（所有阀门处于关闭状态）环压值一般高于驱替压力1～2MPa。
3．打开环压阀，给夹持器施加环压，密封岩心，并关闭环压阀。
4．调节高压调压阀，开阀1放空原先调节压力，关闭阀1。
5．再调节高压调压阀至测试压力。
6．开阀1让气体流入岩心。
7．选择合适的流量计，计量气体流量，一般从大到小选取。
8．当测试压力稳定，流量稳定后，记录测试压力及流量值。
9．根据压力、流量结合其它参数计算气体渗透率。
10．如果测试压力低于1MPa，可用低压调压阀调节压力，调节时先将高压调压阀出口调为1.2MPa以下（注意：不能超过1.2MPa，否则会损坏低压调压阀）。再打开阀2、阀3，调节低压调压阀至所需压力。
11．测试完毕后，先旋松高压调压阀，再开环压放空环压，取出岩心。
Core gas porosity and permeability tester is an analytical instrument for core physical properties, which can provide reliable analysis basis for core permeability and porosity for scientific research units in petroleum, geology, coal mine and other industries. The instrument has the advantages of stable performance, automatic data collection and processing, simple operation and fast determination speed.
This product can measure the porosity and permeability of core at the same time, or measure one of them separately. The whole process of instrument detection, testing, data processing and report printing is controlled automatically by computer, and the on-off valve is controlled by computer, and the pressure regulation is controlled manually.
The porosity measurement part consists of pressure regulator, container, standard room and rock sample cup. The pressure sensor and pressure gauge simultaneously display the determination process of rock sample solid phase and pore volume, and form closed-circuit control with microcomputer. The determination principle of porosity is based on Boyle's law, and the determination results are displayed by microcomputer.
Permeability system consists of pressure regulator, drying filter, flow sensor and pressure sensor. The microcomputer automatically tracks and collects the pressure and flow information in the determination process. The measurement principle of permeability is based on Darcy's law, and the measurement results are displayed by microcomputer.
The data acquisition system can be used to collect the values of pressure and flow, and the data related to permeability and porosity can be processed by computer.
Main technical indexes of core gas porosity and permeability tester:
Applicable cores: Ф50, Ф70, Ф75, Ф100 and Ф105.
Measuring pressure: 600KPa
Working medium: helium and nitrogen.
Measurement accuracy: 0.5%
Ring pressure: 0 ~ 4 MPa
Operation:
1. Load the core into the core holder and tighten it.
2. Operate the manual booster pump until the required annular pressure (all valves are closed) is generally 1 ~ 2 MPa higher than the displacement pressure.
3. Open the annular pressure valve, apply annular pressure to the gripper, seal the core, and close the annular pressure valve.
4. Adjust the high pressure regulating valve, open valve 1 to vent the original regulated pressure, and close valve 1.
5. Adjust the high pressure regulating valve to the test pressure.
6. Open valve 1 to let gas flow into the core.
7. Choose a suitable flowmeter to measure gas flow, generally from large to small.
8. When the test pressure is stable and the flow rate is stable, record the test pressure and flow rate.
9. Calculate the gas permeability according to the pressure and flow combined with other parameters.
10. If the test pressure is lower than 1MPa, the pressure can be adjusted by the low-pressure regulating valve. When adjusting, first adjust the outlet of the high-pressure regulating valve to below 1.2MPa (note: it cannot exceed 1.2MPa, otherwise the low-pressure regulating valve will be damaged). Open valve 2 and valve 3 again, and adjust the low pressure regulating valve to the required pressure.
11. After the test, loosen the high-pressure pressure regulating valve first, then open-loop pressure to vent the annular pressure, and take out the core.
南通立凯机电工程有限公司专业设计、制造、销售超临界流体设备和石油科研仪器。产品主要包括：
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