侯甲区块煤层气产出水来源分析

Source Analysis of Coalbed Methane Produced Water in Houjia Block

为研究侯甲区块煤层气多层合采过程中产出水的来源,通过对侯甲区块3#+15#煤层合层排采水的分析,阐明了研究区不同含水层对煤层气合层排采的影响,其中通过分析单采3#煤层、单采15#煤层以及合采3#+15#煤层与含水层的水化学特征,得出不同含水层与单采以及合层排采水的关系,进一步确认合采产出水来源与顶板砂岩水和K2灰岩水存在一定的相关性。

In order to study the source of effluent in the combined mining process of coalbed methane in multiple coal seams in Houjia Block,the influence of different aquifers in the study area on the combined layers drainage of coalbed methane was illustrated through the analysis of the combined layers drainage water of 3#+15#coal seams in Houjia Block.The hydrochemical characteristics of the 3#single mining seam,15#single mining seam and 3#+15#combined mining seam and aquifer were analyzed.The relationship between different aquifers and single and combined layers drainage water was obtained,and it was further confirmed that there was a certain correlation between the source of combined production water and the roof sandstone water and K2 limestone water.