测井高分辨率层序地层分析方法

High resolution sequence stratigraphic analysis from geophysical logging data

为了利用测井资料进行单井高分辨率层序分析,运用数理统计的方法、Fischer图解法等数学方法,进行测井曲线的预处理、测井相的识别、测井沉积旋回的划分、测井层序的识别和划分、基准面旋回等识别,进行测井高分辨率层序分析。分析表明,白音查干凹陷达28井腾格尔组主要包括74个上升或下降的短旋回,7个中期旋回和1个长期旋回,基准面旋回以不对称的下降半旋回为主。研究认为,随着层序地层学的不断深入和发展,测井资料将发挥越来越大的作用。不断提高测井资料的利用程度和水平,充分发挥和扩大测井资料在层序地层学分析中的作用和应用范围,将有力地促进测井高分辨率层序地层学的发展。

High resolution sequence stratigraphic analysis from geophysical logging data is carried out by the curve pro-process, litho analysis, sedimentary cycles distinguish, sequence analysis and base-level cycle judgment with the methods of quantity, Fischer diagram and other mathematic methods. Da28 Tengge＇er member of Baiyinchagan depression include 74 ascend or descend short-cycle, 7 middle-cycle and 2 long-cycle. Descend cycle with asymmetry give priority to Base-level cycle. As the advance and deepness in research of high resolution sequence stratigraphy, geophysical logging will be important data to be used more and more. Enhancing the using degrees and level and enlarging application field in high resolution sequence stratigraphic analysis of geophysical logging data, will be helpful to promote the development of high resolution sequence stratigraphy.