井下甲烷燃烧加热装置
By using a downhole methane combustion heating device to heat the protective cover inside the wellbore, the problems of low production capacity and reservoir blockage caused by natural gas hydrate natural pressure reduction extraction have been solved, achieving efficient natural gas hydrate decomposition and extraction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA UNIV OF PETROLEUM (EAST CHINA)
- Filing Date
- 2023-10-08
- Publication Date
- 2026-07-17
AI Technical Summary
Natural gas hydrate extraction via natural depressurization has low production capacity, and the decrease in reservoir temperature leads to a reduction in gas production rate and blockage problems.
The downhole methane combustion heating device is used to mix air and methane on the surface to form a pre-mixed gas, which is then transported downhole by an air compressor and ignited by an igniter. The combustion heats the protective cover inside the wellbore to increase the reservoir temperature and break the phase equilibrium condition of natural gas hydrates.
It improves the extraction efficiency of natural gas hydrates, solves the problems of low production capacity and blockage, and realizes effective heating and decomposition of reservoirs.
Smart Images
Figure CN117287165B_ABST