摘要
为了定量、准确地预测煤体结构空间展布,基于沁水盆地柿庄北区块煤层气测井和钻井取心数据,引入煤岩地质强度因子的概念,对煤岩煤体结构进行宏观描述与定量表征,通过分析煤体结构表征值与各测井曲线间相关性,选取体积密度、自然伽马、井径、声波时差、电阻率曲线,利用多元回归分析方法,建立了煤体结构预测模型,并对取心煤体结构进行了验证,对柿庄北区块煤体结构进行单井分层划分,进而揭示其空间分布规律。结果表明:基于测井参数建立的煤体结构预测模型准确性较高,可供煤层气储层改造借鉴应用。
In order to make quantitative and accurate forecast of coal-body structure about its spatial distribution, making a macroscopic description and quantitative characterization on coal-body structure by introducing coal Geology Strength Index （GSI） concept, the rela- tionship between quantitative characterization of coal-body structure and logging parameters were analyzed,based on coalbed methane well loggings and drilling data in northern Shizhuang Area of Qinshui Basin.Logging parameters were chosen ,such as volume density, gamma, hole diameter ,interval transit time , resistivity.Then the forecast model of coal-body structure was built by means of multi-factor regression analysis, and a contrast verification was made between prediction model and coring coal-body structure.Coal-body structure of single wells were divided and the spatial distribution law was announced in northern Shizhuang Area.The results showed that the forecast model of coal-body structure was reliable,based on logging parameters.It could provide guidance for coalbed methane reservoir reconstruction.
出处
《煤炭科学技术》
CAS
北大核心
2017年第2期173-177,196,共6页
Coal Science and Technology
基金
国家科技重大专项资助项目(2011ZX05042-003-001)
高等学校博士学科点专项科研基金资助项目(20110023130001)
关键词
测井参数
煤体结构
回归分析
沁水盆地
logging parameters
coal-body structure
regression analysis
Qinsbui Basin
