中国煤炭地质
中國煤炭地質
중국매탄지질
COAL GEOLOGY OF CHINA
2015年
8期
73-77
,共5页
多矿物模型分析%交会图%岩性解释%测井
多礦物模型分析%交會圖%巖性解釋%測井
다광물모형분석%교회도%암성해석%측정
multi-mineral model analysis%cross-plot%lithological interpretation%well logging
多矿物模型分析方法是基于测井参数与矿物含量建立的函数关系式，采用最优化数学方法求取地层岩性。统计沁水盆地煤层气勘探26口标准井的7个常规测井参数，通过交会图分析，确定GR(自然伽马)、CNL(补偿中子)、DEN(体积密度)和AC(声波时差)为模型参数值；并根据地质录井资料来确定矿物成分，建立岩性分析模型。利用该模型对该区300余口井的测井资料进行岩性解释，经地质录井资料检验，其对煤层、砂岩、灰岩及泥岩解释的准确率达到90％以上。
多礦物模型分析方法是基于測井參數與礦物含量建立的函數關繫式，採用最優化數學方法求取地層巖性。統計沁水盆地煤層氣勘探26口標準井的7箇常規測井參數，通過交會圖分析，確定GR(自然伽馬)、CNL(補償中子)、DEN(體積密度)和AC(聲波時差)為模型參數值；併根據地質錄井資料來確定礦物成分，建立巖性分析模型。利用該模型對該區300餘口井的測井資料進行巖性解釋，經地質錄井資料檢驗，其對煤層、砂巖、灰巖及泥巖解釋的準確率達到90％以上。
다광물모형분석방법시기우측정삼수여광물함량건립적함수관계식，채용최우화수학방법구취지층암성。통계심수분지매층기감탐26구표준정적7개상규측정삼수，통과교회도분석，학정GR(자연가마)、CNL(보상중자)、DEN(체적밀도)화AC(성파시차)위모형삼수치；병근거지질록정자료래학정광물성분，건립암성분석모형。이용해모형대해구300여구정적측정자료진행암성해석，경지질록정자료검험，기대매층、사암、회암급니암해석적준학솔체도90％이상。
The multi-mineral model analysis is a functional relation expression established on the basis of well logging parameters and mineral content, using optimized mathematical approach to get strata lithology. Through statistics of 7 routine parameters of 26 type wells in Qinshui Basin CBM exploration, using cross-plot analysis determined GR (gamma ray), CNL (compensated neutron log), DEN (bulk density) and AC (acoustic differential time) as model parameters, also geological logging to determine mineral components, estab?lished lithology analytical model. Using the model carried out lithological interpretation for logging data from 300 more wells in the ar?ea. Through geological logging data inspection, the accuracies of interpretation for coal seam, sandstone, limestone and mudstone can be over 90%.
