摘要
本文介绍了砂泥比曲线、R/S分析、活度函数分析、小波变换等高分辨率层序地层划分方法,在此基础上利用理论信号模型和地质模型对这几种方法的适用性进行了分析,认为活度曲线法和小波分析法在对称和非对称模型具有较好的适应性;砂泥比曲线划分的结果受模型结构变化影响大;砂泥比曲线和离散小波变换适合于短期旋回的划分;活度曲线和连续小波变换适合于中期旋回的划分;R/S分析适合于中长期旋回划分。建立了开展高分辨率层序地层旋回定量划分的技术流程。
The high resolution sequence stratigraphic division methods such as sand-mud ratio curve, R/S analysis, activity function analysis, and wavelet transformation, etc. have been introduced in this paper, which have been analyzed on the applicability using theoretical signal models and geological models. It is concluded that activity curve and wavelet analysis can be applied effectively in symmetrical and asymmetrical models, the model constructions affect greatly on the results of sand-mud ratio division, sand-mud ratio curve and scattered wavelet transformation can be adaptable in the division of short-term cycle, activity curve and continuous wavelet transformation are adaptable in the division of middle term cycle, and R/S analysis can be applied in the division of middle and long term cycles. Based on these methods, the technological flow chart of quantity division of high resolution sequence stratigraphic cycle has been built.
出处
《油气地球物理》
2011年第4期6-11,共6页
Petroleum Geophysics
