US 11,860,079 B2
Parallel core simulation device for commingling production in low-permeability gas reservoirs
Ping Yue, Chengdu (CN); Zhiwei Xie, Sichuan (CN); Shenchao Luo, Korla (CN); Wensheng Xu, Korla (CN); Pengyu Chen, Beijing (CN); Wenbing Gao, Xi'an (CN); Guanglei Ren, Zhengzhou (CN); Qingsong Gao, Zhengzhou (CN); Tao Lei, Zhengzhou (CN); Xiaofan Chen, Chengdu (CN); He Qiu, Chengdu (CN); and Bingyi Jia, Chengdu (CN)
Assigned to SOUTHWEST PETROLEUM UNIVERSITY, Chengdu (CN)
Filed by SOUTHWEST PETROLEUM UNIVERSITY, Sichuan (CN)
Filed on Dec. 27, 2020, as Appl. No. 17/134,468.
Application 17/134,468 is a continuation of application No. PCT/CN2019/107259, filed on Sep. 23, 2019.
Claims priority of application No. 201910032777.9 (CN), filed on Jan. 14, 2019.
Prior Publication US 2021/0116352 A1, Apr. 22, 2021
Int. Cl. G01N 15/08 (2006.01); E21B 41/00 (2006.01)
CPC G01N 15/082 (2013.01) [E21B 41/00 (2013.01)] 10 Claims
OG exemplary drawing
 
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.