公开(公告)号：US20240240557A1

公开(公告)日：2024-07-18

申请号：US18620194

申请日：2024-03-28

申请人： CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)

发明人： Bangtang YIN ,  Tianbao DING ,  Baojiang SUN ,  Zhiyuan WANG ,  Yonghai GAO ,  Hao LI ,  Xiaohui SUN ,  Xuerui WANG

IPC分类号： E21B49/00

CPC分类号： E21B49/008 ,  E21B2200/20

摘要： A device for simulating gas intrusion and bullheading in a wellbore under different inclinations is provided, which includes a wellbore outer pipe with an inner pipe and an LED light source therein. An outer wall of the wellbore outer pipe is provided with one or more inlets. A bubble generator is arranged outside a lower plug, and extends through the lower plug via an air inlet needle into the inner cavity of the wellbore outer pipe. An input end of the bubble generator is connected to an air compressor. A lower outlet of the wellbore outer pipe is connected to an inlet of a formation unit through a pipeline and a back pressure valve. A simulating method using such device is also provided.