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    Ellipse detection acceleration method based on generalized Pascal mapping
    2.
    发明授权
    Ellipse detection acceleration method based on generalized Pascal mapping 有权

    公开(公告)号：US11783502B2

    公开(公告)日：2023-10-10

    申请号：US17437234

    申请日：2021-03-05

    Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

    Inventor： Qi Jia ,  Xin Fan ,  Zhongxuan Luo ,  Yu Liu ,  Qian Wang ,  Risheng Liu ,  Yi Wang ,  Xiujuan Xu

    IPC: G06T7/60 ,  G06T7/13

    CPC classification number: G06T7/60 ,  G06T7/13

    Abstract: The present invention relates to the technical field of digital image processing, and provides an ellipse detection acceleration method based on generalized Pascal mapping. The method comprises: step 100, extracting accurate edge points from a real image by means an edge detection method of an ellipse detection method, connecting edge points into arcs, and taking a de-noised arc set as input of an ellipse detection acceleration method; step 200, screening out a valid candidate arc combinations probably belonging to the same ellipse from the arc set input in step 100; step 300, calculating five parameters of a candidate ellipse; repeating step 200 to step 300 until all valid candidate arc combinations in the arc set and corresponding candidate ellipses are found; and step 400, clustering and verifying candidate ellipse sets, obtaining a final detected ellipse set.

    Method for stabilizing CO
    3.
    发明授权
    Method for stabilizing CO 有权

    公开(公告)号：US12031088B2

    公开(公告)日：2024-07-09

    申请号：US18180878

    申请日：2023-03-09

    Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

    Inventor： Yongchen Song ,  Lanlan Jiang ,  Sijia Wang ,  Xin Wang ,  Mingjun Yang ,  Yu Liu

    IPC: C09K8/594

    CPC classification number: C09K8/594 ,  C09K2208/10

    Abstract: A method for enhancing geological storage by injecting nanoparticles to stabilize CO2 microbubbles, which belongs to the technical field of multiphase flow. The method first improves the physical properties of the fluid by pre-mixing CO2 and nanoparticles, and then the fluid is transported to the underground through high-pressure pipelines, and then CO2 microbubbles containing nanoparticles are generated through a dense perforated plate arranged by an injection well to improve the dissolution rate and sweep efficiency of the gas in the saline aquifer, so as to enhance the later mixing of the fluid. The combined injection can improve CO2 storage capacity and storage safety, and further reduce the risk of gas leakage in the reservoir.

    CT triaxial test apparatus for hydrate-bearing sediment
    5.
    发明授权
    CT triaxial test apparatus for hydrate-bearing sediment 有权

    公开(公告)号：US11215569B2

    公开(公告)日：2022-01-04

    申请号：US16968818

    申请日：2019-11-18

    Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

    Inventor： Yongchen Song ,  Yanghui Li ,  Peng Wu ,  Weiguo Liu ,  Jiafei Zhao ,  Mingjun Yang ,  Yu Liu ,  Lei Yang

    IPC: G01N23/046 ,  G01N3/12

    Abstract: The present invention provides a CT triaxial test apparatus for hydrate-bearing sediment, and belongs to the technical field of fundamental physical property measurement of geotechnical engineering. In the apparatus, aiming at the defects of the invention “a visual test apparatus for mechanical characteristics of natural gas hydrate-bearing sediment”, the CT triaxial test apparatus for hydrate-bearing sediment is redesigned and optimized, on the premise of obtaining static and dynamic mechanical characteristics and creep characteristics of a hydrate reservoir, the stability of the triaxial apparatus during rotation due to scanning, the temperature control accuracy of a hydrate-bearing sample, and the X-ray penetration performance of the pressure chamber of the triaxial apparatus are improved, an optimal CT imaging effect is obtained, and powerful hardware support is provided to ascertain the reservoir deformation mechanism during hydrate decomposition.

    Fully visual flow loop system for studying hydrate blockage
    10.
    发明授权
    Fully visual flow loop system for studying hydrate blockage 有权

    公开(公告)号：US11199502B2

    公开(公告)日：2021-12-14

    申请号：US16195134

    申请日：2018-11-19

    Applicant: Dalian University of Technology

    Inventor： Yongchen Song ,  Jiafei Zhao ,  Zheyuan Liu ,  Weiguo Liu ,  Yu Liu ,  Huiyong Liang ,  Jiawei Chu ,  Mingjun Yang ,  Yanghui Li

    IPC: G01N21/85 ,  F04D3/02 ,  F16L9/10 ,  F17D1/02 ,  G01M99/00 ,  G01N21/01 ,  G01N21/75 ,  G01N33/22

    Abstract: The present invention discloses a fully visual flow loop system for studying hydrate blockage. The fully visual flow loop system includes a first pipeline, a second pipeline, a third pipeline and a fourth pipeline connected successively in an end-to-end way; a single screw pump is connected between the first pipeline and the fourth pipeline from the four pipelines; the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are all transparent to light; a plurality of CCD cameras are arranged between the first pipeline, the second pipeline, the third pipeline and the fourth pipeline; and, the fully visual flow loop system is arranged in a stepping low-temperature thermostatic chamber; a solution injection system can inject a solution into the fully visual flow loop system; a separation and collection system can separate and recover the solution; and a data acquisition system can integrate sensor information in all the other systems and give real-time feedback to ensure reasonable and coordinated operation of all systems. The fully visual flow loop system for studying hydrate blockage in the present invention can realize full visualization and real-time monitoring of the flow loop system.

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