Device and method for simulating gas intrusion and bullheading in wellbore under different inclinations

US12071849B2 · kind B2 · utility

Assignee

• CHINA UNIVERSITY OF PETROLEUM (EAST CHINA) · CN

Inventors

• Bangtang Yin · Qingdao, CN
• Tianbao DING · Dongying, CN
• Baojiang Sun · Shandong, CN
• Zhiyuan Wang · Qingdao, CN
• Yonghai Gao · Shandong, CN
• Hao Li · Poing, DE
• Xiaohui Sun · Beijing, CN
• Xuerui Wang · Dongying, CN

Key dates

• Filing date: Mar 28, 2024
• Grant date: Aug 27, 2024
• Expiry date: Mar 28, 2044

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F30/20
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

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.