lithic facies 中文意思是什麼
lithic facies
解釋
巖相-
The mathematical statistics method and extrema variance clustering method can be used to visible automatic classifying and reading of logging curves. the lithofacies classifying program basing on multi - mineral model analysis presents a new method to analyze logging - facies and more accuracy and visualized logging facies section can be reached by using this method. in addition, it supplies reliable lithologic layering reference for search and evaluation of oil / gas caprock and it also made up for the high cost of core - drilling and the inaccuration between lithic fragment description and depth
採用基於「數理統計-極值方差聚類法」的面向對象可視化操作方法可有效地解決測井曲線的可視化自動分層取值問題；而基於多礦物模型分析的巖相劃分程序又提供了一種新的測井相分析方法，能得到更為準確直觀的測井相剖面，為尋找和評價油氣蓋層提供了可靠的巖性分層依據，同時彌補了鉆井取心費用高和錄井巖屑描述與深度有誤差的缺陷。 -
According to the regional geology and the character of the lithofacies and well - logging facies, 4 kinds of sedimentary facies and 3 kinds of depositional system : marine system, delta system and fluvial system have been identified. the sedimentary facies of taiyuan formation is marine faceis, up to sanxi formation, the sedimentary facies is delta facies, the xiashihezi formation hel and he2 member are braided river facies, he3 member is meandering river facies. the mains types of sandstone of taiyuan formation are lithic quartzarenite and quartzarenite ; the mainly types of sandstone of sanxi formation and xiashihezi formation is litharenite
通過對20餘口井2000多米巖心的觀察和對40幾口井的測井數據解釋、對比，在研究區目的層段識別出了12種基本巖相和9種測井相類型，在區域沉積背景和單井相劃分的基礎上，根據巖相和測井相組合特徵，在太原組?下石盒子組劃分出4種沉積相和若干沉積微相，並進一步劃分為3類沉積體系：濱淺海沉積體系、三角洲沉積體系和河流沉積體系。
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