腾格尔组短期基准面旋回测井响应特征  

High resolution sequence stratigraphy analysis in Tengge'er Formation from well logging data

作　　者：李新虎[1] 李亚婷[1] 王婷茹[1] 石杰[1] 

机构地区：[1]西安科技大学地质与环境学院,陕西西安710054

出　　处：《煤田地质与勘探》2011年第5期18-21,26,共5页Coal Geology & Exploration

基　　金：国家自然科学基金项目(41072110);陕西省自然科学研究计划项目(SJ08D06)

摘　　要：以高分辨率层序地层学理论为指导,根据可容空间(A)与沉积供给(S)比值的测井响应特征,结合沉积特征、沉积微相以及旋回对称性的变化,利用测井曲线叠加样式,确定短期基准面旋回测井响应特征和体系域内沉积物体积分配。研究结果表明,白音查干凹陷腾格尔组短期基准面旋回分为向上"变深"的非对称型(A型)、向上"变浅"的非对称型(B型)以及向上"变深"再"变浅"的对称型(C型)3种主要类型。再依据低可容空间和高可容空间特点,将A型划分为A1和A2两种类型;将B型划分为B1和B2;依据上升半旋回和下降半旋回的对称性,将C型划分为完全–近完全对称型(C1型)、以上升半旋回为主的不完全对称型(C2型)以及以下降半旋回为主的不完全对称型(C3型)等7种次级短期基准面旋回类型。According to the dynamic changes of accommodation space（A） and sedimentary supply（S） ratio reflected in well logging response characteristics,combined with sedimentary characteristics,sedimentary facies and cyclic symmetry changes data and well logging stacking patterns,the different base levels cycle of well logging response characteristics and sedimentary volume distribution within system tract have been determined in the guidance of the high resolution sequence stratigraphy theories.Short-term base lever cycle have been divided into 3 types including up-deepening asymmetrical type（A）,up-shallowing asymmetrical type（B） and up-deepening asymmetrical into up-shallowing symmetry（C）.According to the low and high accommodation characteristics,type-（A） is divided into A1 and A2,the type-B is divided into B1 and B2.Based on the symmetry of ascending base lever cycles and descending base lever cycle,type-C is divided into complete-nearly complete symmetric（C1）,incomplete-symmetry of mainly ascending base lever cycles（C2） and incomplete-symmetry of mainly descending base lever cycles（C3）.Besides,there are 7 short-term types of base-level cycles.

关 键 词：基准面旋回 A/S 层序地层学 测井响应 

分 类 号：P618[天文地球—矿床学]