煤层气田水文地质参数与煤层气井产能相关性  

Correlation of hydrogeological parameters of coalbed methane field and productivity of coalbed methane wells

作　　者：连会青[1,2] 尹尚先[1] 李小明[1] 夏向学[1] 

机构地区：[1]华北科技学院安全工程学院,河北燕郊065201 [2]中国矿业大学(北京)资源与安全工程学院,北京10083

出　　处：《辽宁工程技术大学学报（自然科学版）》2013年第6期725-729,共5页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(41072188);教育部新世纪优秀人才支持计划资助项目(NCET-11-0838);"十二五"国家科技支撑计划实施方案(2012BAK04B04);973计划资助项目(2013CB227903);中央高校基本科研业务费资助项目(AQ2013B01);河北省自然科学基金资助项目(E2013508123)

摘　　要：为了解含水层水文地质参数对煤层气成藏和开采的控制作用,研究了河东煤田三交区块主采煤层的直接含水层组水文地质条件与该区煤层气产能的相关性.结果表明:水力边界、水动力场和水化学场和煤层气赋存特征存在相关性,水位标高、矿化度、影响半径三个水文地质参数的合理匹配可以可获取较好的煤层气富集区,并确定研究区中南部为有利于煤层气富集和成藏的区域;三交井组与碛口井组实际排采数据与该区相应三个水文地质参数也存在关联性,开采中的产气规律与水文地质控气规律相一致,且开采模式可以分为滞后型和同步型两类.该成果对煤层气富集靶区预测和开采具有一定的参考价值和指导意义.In order to understand the control effect of hydrogeological parameters on coalbed methane reservoir formation and exploitation, this paper studied on the relation between the coalbed methane productivity and the hydrogeological conditions of the direct aquifers of main coal seam in Sanjiao area of Hedong coalfield. The results show that correlations exist among the coalbed methane （CBM） occurrence characteristics and the hydraulic boundary, hydrodynamic field and hydrochemical field. The reasonable matching of the groundwater level, mineralization degree and influence radius could be used to get the enrichment zone of CBM, and by this, the south-central region is considered to be favorable for accumulation and localization of CBM. Also, there are correlations between these three parameters and the practical data of drainage and production. Gas production laws in producing process are matched with control laws of hydrogeology, and the mining model can be divided into hysteresis and synchronization. These results have an important reference value for the prediction of the enrichment zone and exploitation of CBM.

关 键 词：煤层气田 三交区块 含水层组 水文地质参数 匹配 控气规律 相关性 开采模式 

分 类 号：O348.8[理学—固体力学]