煤层气快速解吸方法研究

Study on the Method of Rapid Desorption of Coalbed Methane

对于煤层气含量的测定方法,现行的自然解吸法测定周期长,不能满足相关需求,因此有必要探索新方法,充分分析影响含气量测定周期的各个影响因素,进行含气量快速测定方法的研究,在保证测试数据准确性(自然解吸)的基础上,降低测试周期。研究发现,煤层气含量测定周期的长短主要取决于煤层气储层温度、测试频率、解吸终止限。在无法改变煤层自身因素的条件下,可通过优化试验条件,提高煤层气解吸速率,降低测试周期,尽快提供煤层气含量数据,为设计下一步的试井、压裂、排采等工序提供技术支持。

To the method for the determination of CBM content,natural desorption method of current measurement cycle is long,can’t meet the relevant requirements,so it is necessary to explore new methods,fully analyzing the various influence factors affecting gas content measurement cycle,the air content rapid determination method of study,to ensure accuracy(desorption)on the basis of test data,reduce the test cycle.Studies have found that CBM content determination of cycle length depends on coalbed methane reservoir temperature,test frequency and desorption termination.In cannot change coal seam under the condition of their own,but by optimizing the experimental conditions,improve the coal bed methane desorption rate,reduce the test cycle,provide data of coalbed methane content as soon as possible,for the next step of well test design,provide technical support for fracturing and high rank.