公开(公告)号：US20230272264A1

公开(公告)日：2023-08-31

申请号：US17919077

申请日：2021-12-28

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Jiafei ZHAO ,  Yuxin JIA ,  Lei YANG ,  Yanzhen LIU ,  Lunxiang ZHANG ,  Yongchen SONG ,  Weiguo LIU ,  Yanghui LI ,  Yu LIU ,  Mingjun YANG ,  Zheng LING ,  Dayong WANG ,  Xiang SUN ,  Tao YU

IPC: C09K8/524

CPC classification number: C09K8/524 ,  C09K2208/22

Abstract: The present invention belongs to the technical field of natural gas hydrates (NGHs), and provides an environmentally friendly NGH inhibitor and application. The hydrate inhibitor has a component of nisin, and further comprises chitooligosaccharide and an alcohol thermodynamic hydrate inhibitor, that can enhance the thermostability of the inhibitor and the inhibitory effect for NGHs. The optimal application conditions of the NGH inhibitor of the present invention are: temperatures of −10 to 100° C., pressures of 0.1 to 25 MPa, and a maximum subcooling degree of 12° C. The inhibitor of the present invention has good NGH inhibitory performance and certain antibacterial effects, which is a low-dose, degradable, high temperature resistant, green, environmental protective, safe and efficient NGH inhibitor, that can be used for the fields of oil-gas transportation and NGHs, and provides a new solution for field application of green natural hydrate inhibitors.

公开(公告)号：US20250034995A1

公开(公告)日：2025-01-30

申请号：US18784963

申请日：2024-07-26

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Yongchen SONG ,  Lei YANG ,  Mingjun YANG ,  Yu LIU ,  Lanlan JIANG ,  Dawei GUAN ,  Lunxiang ZHANG ,  Yi ZHANG ,  Yanghui LI ,  Zheng LING ,  Tao YU ,  Bingbing CHEN ,  Peng WU

IPC: E21B49/00 ,  E21B43/16 ,  E21B47/07

Abstract: The present disclosure relates to the field of CO2 geological sequestration, and provides a whole-process multi-parameter monitoring device and method for simulating CO2 geological sequestration and use thereof. A large-scale reactor body is developed, and a geological reservoir at a depth of 800 to 3000 meters is simulated. A modular built-in model device is researched and developed, a multi-type and variable-structure reservoir remodeling technology is developed, and mutual coupling of modules can be achieved. The design idea of separating the pressure reactor from the built-in sample model is adopted in the device. The confining pressure, the pore pressure, the temperature gradient, and the axial load of the device can be independently controlled through a temperature control mechanism and a loading mechanism respectively, so that the restoration of the state of in-situ stresses in the reservoir is realized.