利用测井资料研究层序的方法述评

Review On Methods for Studying Strata Sequence with Log Data

层序地层分析在地层学理论研究和石油勘探开发中有着重要的地位。不同级次层序界面的划分及其内部的旋回结构剖析是层序地层分析的关键。测井资料作为地层岩性、物性的反映,其中必然蕴含了大量与沉积地层旋回变化有关的信息。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。测井曲线活度、深-频分析、小波分析及分形分析等方法的研究实践证明,利用测井资料研究层序地层是行之有效的。介绍了这些方面的基本情况。

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. Log data, as representations of lithology and physical properties of stratum, hold abundant information related to sedimentary cycles. The use of various methods to extract and analyze corresponding information will greatly promote the quantitative lever in study of stratum sequence. Activity of logging curve, depth-frequency analysis, wavelet analysis, fractal analysis and other methods have been applied to this oilfield. Practices prove that log data study is an effective means of sequence stratigraphy research. This paper presents a brief review on above mentioned topics.