CPC G01N 15/082 (2013.01) [E21B 41/00 (2013.01)] | 10 Claims |
1. A parallel core simulation device for commingling production in a low-permeability gas reservoir, comprising:
a gas supercharger configured to provide a high pressure gas to simulate a fluid in a gas reservoir;
a plurality of core holders arranged in parallel, communicated with the gas supercharger and configured to clamp a core;
a thermostat configured to control a temperature of each core holder to simulate a temperature of the gas reservoir;
a pressure pump configured to control a pressure applied to each core holder to simulate a confining pressure of the gas reservoir;
a first back-pressure valve communicated with each core holder;
a fully-automatic gas meter communicated with the first back-pressure valve and configured to measure a rate and a volume of gas production; and
a second hydraulic pump communicated with the first back-pressure valve and configured to simulate a part of a gas well Christmas Tree;
wherein a first pressure gauge is arranged between the gas supercharger and a plurality of core clamping components; and the plurality of core clamping components are arranged in parallel;
an air inlet end of each core holder is provided with a first check valve and a fourth pressure gauge; an air outlet end of each core holder is provided with a fifth pressure gauge and a second check valve; and a third pressure gauge is provided on a high-pressure pipeline between each core holder and the pressure pump;
a third check valve and a second pressure gauge are provided between the first back-pressure valve and the second hydraulic pump; and
a pressure and a flow rate of each core holder at its air inlet end are controllable during use by the second hydraulic pump for production simulation.
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