一种利用地热促进CO2驱替的煤层气环保抽采系统
By using underground geothermal heating to circulate and heat the water extraction pipeline, the problems of water waste and low heat utilization in existing technologies have been solved, achieving efficient coalbed methane extraction and CO2 storage, and improving the environmental friendliness and efficiency of the extraction system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ANHUI UNIV OF SCI & TECH
- Filing Date
- 2025-06-19
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, geothermal extraction of coalbed methane requires a continuous supply of water resources, and the heat utilization rate is low, making it impossible to effectively heat the coalbed methane pipeline, resulting in resource waste and low extraction efficiency.
A heating pipe wound around the extraction pipe is used, combined with a multi-head pipe and a water pump. The underground geothermal water resources are used to heat the extraction pipe through a heating module and then backfilled into the gas-bearing layer to promote CO2 displacement of methane. A partition plate and buffer mechanism are used to prevent damage to the heating pipe, and the orientation of the multi-head pipe is adjusted to improve pumping efficiency.
It has achieved water conservation and utilization, improved methane extraction rate and CO2 geological sequestration efficiency, reduced temperature effects, and enhanced the environmental friendliness and efficiency of the extraction system.
Smart Images
Figure CN120649852B_ABST