煤层气井射孔参数对产能的影响  

Influence on Production of Perforation Parameters in Coalbed Methane Well

作　　者：郭洋[1] 杨胜来[1] 王欣然[1] 

机构地区：[1]中国石油大学(北京),北京102249

出　　处：《油气井测试》2012年第1期13-15,75,共3页Well Testing

基　　金：国家重点基础研究发展规划项目(2002CB211709)的内容

摘　　要：煤储层具有质软、性脆、易造粉、低孔、低渗、低饱和压力层的特点,使煤层气井产能与射孔参数之间的关系复杂。建立数学模型反映煤层气的运移产出过程和射孔参数对渗流的影响。利用数值模型编制软件完成数学模型求解。通过对煤层气井生产进行模拟,研究了射孔参数(主要包括孔深、孔径、孔密、相位角等)对煤层气产能的影响规律,与常规气藏进行了对比,对现场试验对比做出了分析。Coal reservoir has characteristics of the soft,brittle,easily-made powder,low porosity,low permeability,low pressure saturated layer,which makes the relationship between the productivity of coal bed methane well and the perforation parameters to be very complex.The complex mathematical model to reflect migration of coal bed methane production process and the impact of perforation parameters on the flow is established.Using numerical model compiled software,solution of the mathematical model is completed.By simulating production of coalbed methane well,the influenced law of the perforation parameters (including the hole depth,diameter, pore density,phase angle) to the coal-bed methane production are studied.The difference of it from the conventional gas reservoir is compared and the field trials and analysis are made.

关 键 词：煤层气 射孔 产能 影响规律 

分 类 号：TE257.1[石油与天然气工程—油气井工程]