中国煤炭地质
中國煤炭地質
중국매탄지질
COAL GEOLOGY OF CHINA
2015年
4期
57-62
,共6页
地质统计学反演%约束稀疏脉冲反演%变差函数%储层预测
地質統計學反縯%約束稀疏脈遲反縯%變差函數%儲層預測
지질통계학반연%약속희소맥충반연%변차함수%저층예측
geostatistical inversion%constrained sparse spike inversion%variograms%reservoir prediction
针对砂泥岩薄互层非均质性强、单层砂体薄、储层识别困难的工区，进行了地质统计学反演，并与常规约束稀疏脉冲反演结果进行了对比分析，结果表明：常规约束稀疏脉冲波阻抗反演只能识别大套砂体，无法识别薄互层小砂体，而基于储层参数地质统计分析和随机模拟技术的地质统计学反演方法充分发挥了测井数据的垂向高分辨率和地震数据的横向高分辨率优势，可实现砂泥岩薄互层储层砂体分布的精细描述，变差函分析及马尔科夫链-蒙特卡罗随机模拟技术对于厚度在5m以下的小砂体也能较清晰地刻画。
針對砂泥巖薄互層非均質性彊、單層砂體薄、儲層識彆睏難的工區，進行瞭地質統計學反縯，併與常規約束稀疏脈遲反縯結果進行瞭對比分析，結果錶明：常規約束稀疏脈遲波阻抗反縯隻能識彆大套砂體，無法識彆薄互層小砂體，而基于儲層參數地質統計分析和隨機模擬技術的地質統計學反縯方法充分髮揮瞭測井數據的垂嚮高分辨率和地震數據的橫嚮高分辨率優勢，可實現砂泥巖薄互層儲層砂體分佈的精細描述，變差函分析及馬爾科伕鏈-矇特卡囉隨機模擬技術對于厚度在5m以下的小砂體也能較清晰地刻畫。
침대사니암박호층비균질성강、단층사체박、저층식별곤난적공구，진행료지질통계학반연，병여상규약속희소맥충반연결과진행료대비분석，결과표명：상규약속희소맥충파조항반연지능식별대투사체，무법식별박호층소사체，이기우저층삼수지질통계분석화수궤모의기술적지질통계학반연방법충분발휘료측정수거적수향고분변솔화지진수거적횡향고분변솔우세，가실현사니암박호층저층사체분포적정세묘술，변차함분석급마이과부련-몽특잡라수궤모의기술대우후도재5m이하적소사체야능교청석지각화。
Aimed at prospecting areas with mainly interbedded thin sandstone and mudstone, thin single sand mass and difficult to iden?tify reservoirs carried out geostatistical inversion and conventional constrained sparse spike inversion contrastive analysis. The result has shown that the conventional constrained sparse spike inversion can only identify large set of sand mass and unable to identify inter?bedded thin and small sand mass. While the geostatistical inversion based on reservoir parameters geostatistical analysis and stochastic simulation technique can give full play to the predominance of well logging data vertical high resolution and seismic data transverse high resolution and realize accurate description of interbedded thin sandstone and mudstone reservoir sand mass distribution. The vario?grams analysis and Markov chain-Monte Carlo stochastic simulation technique can clearly describe small sand mass with thickness less than 5m.
