| METHOD OF INCREASING WATER AND GAS FLOW RATE OF HORIZONTAL COAL-METHANE WELLS | |
| 2024-04-16 | |
| 专利权人 | GAZPROM DOBYCHA KUZNETSK LLC (GZPM-C) |
| 申请日期 | 2024-04-16 |
| 专利号 | RU2836335-C1 |
| 成果简介 | NOVELTY - Invention relates to production of methane from coal beds and can be used in cleaning horizontal shafts of coal-methane wells in a system with vertical wells and increasing gas recovery of exposed coal beds. Method involves continuous monitoring of readings of a bottomhole pressure sensor installed in a vertical coal-methane well, drying the shaft of a horizontal coal-methane well by pumping nitrogen until the moment of termination of fluid output from the well through the flow line. Nitrogen injection is continued until the pressure in the well is reached, which corresponds to the maximum geostatic pressure, then pressure in the injection line is created not less than the pressure in the horizontal coal-methane well. Pumping of aerated solution is started in horizontal methane-coal well in volume equal to volume of well system, after which nitrogen pumping is continued till pressure value in well reaches about 80% of formation hydraulic fracturing pressure. Nitrogen injection is stopped, the injection line is shut off and pressure relief is started in the horizontal coal-methane well through the flow line at a rate of not more than 10 atm/min, after pressure relief in horizontal methane-coal well to atmospheric pressure, well is closed and fluid level is maintained below productive formation. USE - Mining. ADVANTAGE - Increased flow rate of water and gas due to cleaning of shafts of horizontal coal-methane wells from coal fines and other colmatants. 1 cl, 1 dwg |
| IPC 分类号 | E21B-043/16 |
| 国家 | 俄罗斯 |
| 专业领域 | 化学化工 |
| 语种 | 英语 |
| 成果类型 | 专利 |
| 文献类型 | 科技成果 |
| 条目标识符 | http://119.78.100.226:8889/handle/3KE4DYBR/17150 |
| 专题 | 中国科学院新疆生态与地理研究所 |
| 作者单位 | GAZPROM DOBYCHA KUZNETSK LLC (GZPM-C) |
| 推荐引用方式 GB/T 7714 | POLUKEEV V A,BELYAEV A S,KUDINOV E V,et al. METHOD OF INCREASING WATER AND GAS FLOW RATE OF HORIZONTAL COAL-METHANE WELLS. RU2836335-C1[P]. 2024. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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