基准面旋回定量表征的工作框架

The Framework of Quantitative Characterization of Base Level Cycles

在综述准面旋回的基本概念及基准面旋回传统表征技术的基础上,介绍了基准面旋回定量表征技术,认为通过建立基准面旋回正弦曲线,利用沉降速率(B)、沉积速率(D)、侵蚀速率(E)就可以重建地层层序样式;在理论分析基础上,提出了将基准面旋回定量表征技术应用于储层层序样式建立及地层预测的工作流程,即通过地质分析建立基准面旋回物理模型,结合正反演模拟确定合理的基准面旋回数学模型和地质参数,利用各种插值技术进行基准面旋回及参数的预测,最后根据基准面旋回及参数进行地层样式的反演,从而建立储层纵横向分布模型。

In review of the concept and its traditional characterization of base level cycles,the technique of quantitative characterization of base level cycle was introduced.Under the hypothesis of the sinusoidal shape for base level cycle,the patterns of stratigraphic cyclicity can be modeled with the geological parameters of subsidence rate(B),deposition rate(D) and erosion rate(E).The patterns of stratigraphic cyclicity and the distribution of stratigraphic strata can be simulated by the model.It includes the proto-type base level cycle patterns are established by geologic analysis and the simulated geological parameters of stratigraphic cyclicities are evaluated;the mathematical models of base level cycle and geological parameters are established by forward and inverse algorithms;the models and geological parameters are predicted by interpolation and extrapolation algorithms;the patterns of stratigraphic cyclicity are determined by using the models and geological parameters.