US 12,345,621 B2
Fracture plugging simulation experimental device and experimental method thereof
Yang Liu, Chengdu (CN); Tianshou Ma, Chengdu (CN); Sitong Chen, Chengdu (CN); Xingyun Xiang, Chengdu (CN); Yezhong Wang, Chengdu (CN); Yingjie Chen, Chengdu (CN); and Gui Wang, Chengdu (CN)
Assigned to SOUTHWEST PETROLEUM UNIVERSITY, Chengdu (CN)
Filed by SOUTHWEST PETROLEUM UNIVERSITY, Sichuan (CN)
Filed on Sep. 24, 2024, as Appl. No. 18/895,372.
Claims priority of application No. 202311264246.5 (CN), filed on Sep. 26, 2023.
Prior Publication US 2025/0102413 A1, Mar. 27, 2025
Int. Cl. G01N 15/08 (2006.01); G01N 11/00 (2006.01); G01N 11/04 (2006.01)
CPC G01N 15/0826 (2013.01) [G01N 2011/006 (2013.01); G01N 11/04 (2013.01); G01N 15/088 (2013.01); G01N 2203/0246 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A fracture plugging simulation experimental device, wherein the fracture plugging simulation experimental device includes a simulated wellbore and a processor, a simulated formation matching the simulated wellbore is disposed in the simulated wellbore, a simulated fracture penetrating through an axial direction of the simulated formation is disposed in the simulated formation, a plurality of first pressure sensors connected with a computer are disposed on an inner wall surface of the simulated fracture, the plurality of first pressure sensors are uniformly distributed along the axial direction and a radial direction of the simulated formation, and two ends of the simulated fracture are provided with one of the plurality of first pressure sensors, respectively, and the plurality of first pressure sensors are configured to obtain pressure data of the simulated fracture during a plugging process, the pressure data characterizes a fluid pressure change of the simulated fracture in the plugging process, and a plurality of temperature sensors are provided in the simulated fracture, the plurality of temperature sensors in the simulated fracture are configured to obtain temperature data of the simulated fracture, and a plurality of strain gauges connected with the computer are disposed on the inner wall surface of the simulated fracture;
an upper end of the simulated wellbore is connected with a mixing barrel, a mixing device and a temperature sensor are disposed in the mixing barrel, a liquid injection port and a pressurization port are disposed at a top of the mixing barrel, the liquid injection port is connected with a plugging fluid storage tank, the pressurization port is connected with an output end of a plunger pump, a second pressure sensor and a first valve are disposed on a pipeline between the pressurization port and the plunger pump in sequence, and an input end of the plunger pump is connected with a liquid storage barrel;
a bottom end of the simulated wellbore is connected with a liquid collection tank, a third pressure sensor and a second valve are disposed on a pipeline between the simulated wellbore and the liquid collection tank, the liquid collection tank is connected with the plugging fluid storage tank, and the simulated wellbore and the mixing barrel are connected with a heating device, respectively;
the processor is in communication connection with components of the fracture plugging simulation experimental device, wherein the processor is configured to:
obtain a simulated fracture parameter of the simulated fracture and a simulated formation feature of the simulated formation uploaded by a user based on a user terminal;
determine a lost circulation material parameter and a set experimental parameter based on the simulated fracture parameter of the simulated fracture and the simulated formation feature of the simulated formation;
determine an experimental simulation degree based on the pressure data and the temperature data;
update operation parameters based on the experimental simulation degree; wherein the operation parameters refer to operating parameters of equipment related to the fracture plugging simulation experimental device, wherein the operating parameters of equipment related to the fracture plugging simulation experimental device include a pressurization amplitude of a single pressurization of a plunger pump, heating power of a heating device, and/or rotational speed of a rotating mechanism;
control the plunger pump, the heating device, and the rotating mechanism to operate based on the updated operation parameters until experimental parameters reach the set experimental parameter.