利用测井参数探讨煤层气含量的方法——以新疆阜康矿区为例  

Discussion on Method of Exploring Coalbed Methane Content by Using Logging Parameters--Taking Fukang Mining Area in Xinjiang as an Example

作　　者：来鹏 毛得雷[2] 杜世涛 LAI Peng;MAO De-lei;DU Shi-tao(CBM R&D Center,Xinjiang Coal Geological Bureau,Urumqi 830091,China;National Engineering Research Center of China United Coalbed Methane,Beijing 100072,China;No.161 Coal Exploration Team,Xinjiang Coal Geological Exploration Bureau,Urumqi 830046,China)

机构地区：[1]新疆煤田地质局煤层气研究开发中心,乌鲁木齐830091 [2]中联煤层气国家工程研究中心,北京100072 [3]新疆煤田地质局一六一煤田地质勘探队,乌鲁木齐830046

出　　处：《煤炭技术》2020年第5期59-61,共3页Coal Technology

基　　金：国家科技重大专项“准噶尔、三塘湖盆地中低煤阶煤层气资源评价及选区”(2016ZX05043-001)资助。

摘　　要：在实测数和实验数据的基础上,采用数理统计、数据分析、线性回归、误差分析等方法,对阜康矿区煤层中的灰分与测井参数相关性进行研究,证明测井资料预测煤层含气量是可行的。以新疆阜康矿区为例,利用测井资料中的自然伽马GR和密度DEN与煤质中灰分Ad进行回归拟合分析,建立了煤层灰分的评价方程,然后根据煤层实测含气量与灰分的负相关关系,从而建立了可靠的煤层含气量与自然伽马、密度的测井评价模型。经过对比,误差在允许的范围内,是适合该矿区的,能够用于预测煤层的含气量,进而可以从平面上预测整个煤田煤层含气性的分布特征。Based on the measured data and experimental data,the correlation between ash and logging parameters in the coal seam of Fukang mining area is studied by mathematical statistics,data analysis,linear regression and error analysis.It is proved that the logging data predicts the coal seam.Gas content is feasible.Taking the Fukang mining area in Xinjiang as an example,using the natural gamma GR and density DEN in the logging data and the ash in the coal Adfor regression fitting analysis,the evaluation equation of coal ash is established,and then according to the coal seam.The negative correlation between gas content and ash was measured,and a reliable logging evaluation model for coalbed gas content and natural gamma and density was established.After comparison,the error is within the allowable range,which is suitable for the mining area.It can be used to predict the gas content of the coal seam,and then predict the distribution characteristics of the gas content of the coal seam in the whole coal field from the plane.

关 键 词：阜康矿区 含气量 灰分 测井评价模型 

分 类 号：P618.13[天文地球—矿床学]