小波分频分析法在沉积层序划分及等时对比中的应用

摘要

In order to improve accuracy and precision of automatic correlation of sequence cycles, to solve problems of difficult division, artificial conditions and multiplicity of high resolution sequence cycles, based on previous research and actual well logging data, this paper takes the different characteristics of various sedimentary sequence cycles in Chinese continental extensional basins as the objective, and conducts the research of wavelet frequency analysis. This paper clarifies the basic theory that wavelet frequency analysis is used to divide various sedimentary sequence cycles, and sets up the quantitative standards and response standard model for different types of sedimentary sequence cycles. We can realize the goal of applying wavelet frequency analysis in sequence boundary recognization, sequence unit division, high-resolution division and isochronous correlation of complicated reservoirs, and provide a powerful tool for division and isochronous correlation of sedimentary sequence cycles.%　　为了提高沉积层序旋回自动划分对比的精度和准确度，解决高频层序旋回划分难、人为性、多解性等问题，在厘定前人研究成果的基础上，以国内陆相拉张型盆地沉积层序旋回特征为切入点，以实际测井资料为依托，开展小波分频分析方法的研究，查明了小波分频分析方法研究不同级别沉积层序旋回的基础理论，建立了表征不同类型沉积层序旋回的量化标准和响应标准模式，实现了小波分频分析方法在层序界面拾取、层序单元划分、复杂地层精细划分及等时对比中的应用，为提高沉积层序旋回划分及等时对比的精度提供有力的证据。