公开(公告)号：US10794180B2

公开(公告)日：2020-10-06

申请号：US16305895

申请日：2017-09-27

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Gao Li ,  Yi Feng ,  Shunhui Yang ,  Yijian Chen ,  Na Wei ,  Yingfeng Meng ,  Rui Li

IPC: E21B49/00 ,  E21B21/08 ,  E21B21/10 ,  E21B34/08 ,  E21B43/12 ,  E21B43/26 ,  E21B47/06 ,  G01M99/00

Abstract: A mineshaft-stratum fracture coupled flowing simulation experiment device includes a simulated mineshaft flowing system, a simulated stratum system, a simulated fracture system and a data acquisition system. The simulated mineshaft flowing system includes simulated mineshaft, simulated drilling rod, drilling fluid storage tank, stirring motor, and drilling fluid screw pump. The simulated drilling rod is located in center of the simulated mineshaft. The stirring motor is provided in the drilling fluid storage tank. The drilling fluid screw pump is connected to an inlet end of the simulated drilling rod through the drilling fluid storage tank. The simulated stratum system includes simulated stratum, clean water storage tank, separation tank, gas storage tank, gas air-compressor, and clean water screw pump. The gas storage tank is connected to the gas air-compressor and is connected to the simulated stratum through a gas pressure regulating valve.

公开(公告)号：US10746638B2

公开(公告)日：2020-08-18

申请号：US15775391

申请日：2016-12-02

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Ping Guo ,  Shuai Wu ,  Wanbo Zhang ,  Yisheng Hu ,  Yijian Chen ,  Huimin Zhang ,  Zhouhua Wang ,  Jianfen Du ,  Huang Liu ,  Hongmei Ren

IPC: G01N15/08 ,  G01N1/36 ,  G01N33/24 ,  G01N1/28

Abstract: A direct method for manufacturing a large model fractured core and maintaining original oil-water saturation, including the following steps: (1) determining the volume V, porosity φ, permeability K, oil saturation So, water saturation Sw and the like of a fractured core to be manufactured; (2) preparing simulated oil, and determining the used oil mass mo=Vo×ρo; (3) under the circumstance of no consideration of oil saturation, acquiring the mass of the used water, cement and quartz sand; (4) while establishing oil saturation, acquiring the mass mw of water for manufacturing the core as mw=a−Vo×ρw; (5) mixing oil, water and an emulsifier evenly to prepare an oil-in-water emulsion; (6) adding cement and quartz sand into the emulsion and stirring evenly to obtain cement slurry; (7) when a cement sample is in a semi-solidified state, cutting the cement sample with a steel wire; and (8) solidifying the cement sample to the end.

公开(公告)号：US11428620B2

公开(公告)日：2022-08-30

申请号：US17488536

申请日：2021-09-29

Applicant: Southwest Petroleum University

Inventor： Wenlian Xiao ,  Yubin Yang ,  Jitian Ren ,  Wanfen Pu ,  Shuaishuai Liu ,  Xiao Guo ,  Yongming Li ,  Kun Wang ,  Lingli Zheng ,  Jinzhou Zhao ,  Yijian Chen ,  Quantang Fang

IPC: G01N15/08 ,  G01N33/24

Abstract: A high-temperature and high-pressure microscopic visual flowing device and an experimental method are provided by the present disclosure, comprising a seepage simulation system, a micro-displacement and metering system connected to the seepage simulation system, and an image acquisition and analysis system; the seepage simulation system consists of a visual high-temperature and high-pressure kettle, a microscopic core model placed in the visual high-temperature and high-pressure kettle, and glass carriers arranged above and below the microscopic core model; the glass carriers are provided with sealing rubber sleeves, and the visual high-temperature and high-pressure kettle is provided with an annular heating jacket; an outlet of the microscopic core model is provided with a microflow channel which is connected to the micro-displacement and metering system through a pipe, effectively reducing the metering error caused by the dead volume of the pipe.