煤层气井煤粉产生原因及控粉措施

煤粉是煤层气排水降压过程中必然产生的重要物质,成为制约煤层气连续稳定排采的关键性因素。通过分析煤储层中裂隙系统和煤体结构的发育特征,从根源上揭示煤层气井煤粉产生的主要来源,结合煤层气井的煤粉产出规律,找出相应的控粉措施,对下步煤层气排采具有重要的指导意义。

Causes and Control Measures of Pulverized Coal in Coalbed Methane Well

Pulverized coal is an important material in the process of drainage and depressurization of coalbed methane, which becomes the key factor restricting the continuous and stable drainage and production of coalbed methane. By analyzing the development characteristics of fracture system and coal structure in coal reservoir, the main source of coal powder generation is revealed from the root.Combined with the production law of coal seam gas well, the corresponding pulverized coal control measures are found out, which has important guiding significance for the next step of CBM drainage and production.