几种常用的深部煤层气水平井压裂方式

Several Commonly Used Fracturing Methods for Deep Coalbed Methane Horizontal Wells

煤层气资源是一种重要的非常规天然气资源,在中国具有广阔的开发前景。然而,由于深部煤层气井固有的低渗透性和低孔隙度等特点,其产能较低,因此如何提高煤层气产能一直是一个重要的研究方向。煤层气井压裂技术作为一种提高煤层气产能的重要手段,得到了广泛的应用。结合煤层气开采特点,重点介绍了几种深部煤层气水平井水力压裂技术方式及其扩展应用,以期为煤层气资源的高效开发和利用提供有益的参考。

Coalbed methane resource is an important unconventional natural gas resource with a broad development prospect in China.However,due to the inherent low permeability and low porosity of deep coalbed methane wells,whose yields are generally low.Therefore how to increase the capacity of coalbed methane has been an important research direction.Coalbed methane well fracturing technology has been widely used as an important means to increase coalbed methane production capacity.Several hydraulic fracturing technical methods for deep coalbed methane horizontal wells and their extended applications were highlighted in relation to the characteristics of coalbed methane extraction,with a view to providing useful references for the efficient development and utilization of coalbed methane resources.