公开(公告)号：US11650194B2

公开(公告)日：2023-05-16

申请号：US17647599

申请日：2022-01-11

Applicant: Chengdu University of Technology

Inventor： Jiping She ,  Hao Zhang ,  Bin Yang ,  Yang Yang ,  Yang Li ,  Jianjun Ni ,  Gege Teng ,  Ying Zhong

IPC: G01N33/28 ,  G01N1/38

CPC classification number: G01N33/2823 ,  G01N1/38

Abstract: A dynamic damage evaluation instrument of drilling fluid based on a glass core includes a controller and a support. A kettle body is provided on the support, a well for receiving drilling fluid is provided inside the kettle body, and a well cover is provided at an upper end of the kettle body. A core holding assembly communicating with the well is provided at a side of the kettle body, and a metering assembly is movably provided at the other end of the core holding assembly. A stirrer for stirring drilling fluid is provided inside the well, and a power component for driving the stirrer is provided outside the kettle body. A data detection hole for mounting a temperature and pressure sensor and a pressurization hole for mounting a pressurization device are formed on the well cover.

公开(公告)号：US12000766B2

公开(公告)日：2024-06-04

申请号：US17671607

申请日：2022-02-15

Applicant: Chengdu University of Technology

Inventor： Jiping She ,  Hao Zhang ,  Yang Yang ,  Bin Yang ,  Yang Li ,  Jianjun Ni ,  Shiyu Zhang ,  Ying Zhong

IPC: G01N11/00 ,  B08B9/08 ,  G01N11/14 ,  E21B21/00

CPC classification number: G01N11/14 ,  B08B9/0808 ,  B08B2209/08 ,  E21B21/003 ,  G01N2011/0006

Abstract: An automatically-cleanable thickening performance evaluation instrument for drilling LCMs includes a cleaning device, a kettle body, a thickening motor, a heating component, a test ending component, a top cover, and a bottom cover, where upper and lower ends of the kettle body are both opened; the kettle body is arranged in a third bearing inner race, a third bearing outer race is connected to a first limb, and the first limb is configured to limit a position of the kettle body; and the kettle body is detachably connected to the thickening motor and driven by the thickening motor to rotate. The instrument can realize electric heating and air pressurization to simulate the underground environment, and the kettle body can be completely sealed, such that a measured thickening time is close to an actual thickening time. Moreover, the instrument can be automatically cleaned at the end of a test.

公开(公告)号：US11567233B2

公开(公告)日：2023-01-31

申请号：US16516261

申请日：2019-07-19

Applicant: CHENGDU UNIVERSITY OF TECHNOLOGY

Inventor： Haiyan Zhu ,  Qingyou Liu ,  Yapu Zhao ,  Yang Li

IPC: G01V99/00 ,  G06F30/20

Abstract: A numerical simulation and parameter optimization method for volumetric fracturing of an unconventional dual medium reservoir includes the following steps: based on the theory of dual-medium pore elasticity, in consideration of the friction effect between fractures, developing a viscoelastic-plastic damage model of hydraulic fractures based on explicit time integral; simulating random intersection and bifurcation of hydraulic fractures encountering with natural fractures by adopting a method of embedding zero-thickness fracture units in the inner boundaries of computational model grids, and establishing a mathematical model of hydraulic fracture expansion of volumetric fracturing in the unconventional dual-medium reservoir; compiling a finite element program for complex multi-fracture fracturing and competitive expansion during volumetric fracturing of the unconventional reservoir, and establishing a hydraulic fracturing finite element model of a casing-cement ring-perforation hole in cluster-reservoir matrix containing natural fractures.