应用测井资料识别准层序组界面的方法

Identifying sequence stratigraphy boundaries by using well logging data

在地层学理论研究、石油勘探开发中,层序地层分析有着重要的地位。其研究的关键是各级次层序界面的划分,以及内部的旋回结构解析。在研究过程中,由于岩心比较少、地震资料分辨率达不到精度要求等,为了更好的解决这些问题,在层序地层研究过程中需要应用较多的测井资料。测井资料具有很高的纵向分辨率,包含大量与沉积地层旋回变化有关的信息,是地层岩性和物性等的反映。通过不同方法科学的分析提取这些信息,会大大提高层序地层研究的定量化水平。不断提高测井资料的利用程度,充分发挥测井资料在层序地层学分析中的作用和应用范围,将有利的促进测井层序地层学的发展。

Sequence analysis on strata is very important in academic study of stratigraphy and petroleum exploration. Boundary demarcation of strata in sequences with different orders, and anatomization of its inner cyclic structure are two keys in stratum sequence analysis. But because of the limitation of seismic resolution and the length of the cores, a lot of logging data are needed in order to improve the accuracy of recognition of sequence boundaries. Logging data, as representations of lithology and physical properties of stratum, hold abundant information related to sedimentary cycles with high vertical resolution. The use of various methods to extract and analyze corresponding information will greatly promote the quantitative lever in study of stratum sequence. Continuously improve the level of utilization of logging data. full logging data in sequence stratigraphic analysis of the role and scope of application will be beneficial for logging the development of sequence stratigraphy.