摘要
针对吐哈盆地红台气田测井反映特征独特,曲线形态指相意义不明确等问题,综合应用测井和地质信息,将测井电性参数、岩心资料以及关键井沉积微相研究成果相结合,采用判别分析方法建立了吐哈盆地红台气田电性-岩性、电性-沉积微相判别模型,在Carbonsoft IntellExplore平台上编制了岩性和沉积微相判别程序,从而实现了地层岩性的测井自动识别和沉积微相的人机交互识别。研究结果表明,不同地质构造背景及沉积环境下的地层具有不同的岩电特征,选择能够反映研究区岩性、沉积微相特征的电性参数,建立岩电映射关系是测井相研究的关键,在区域沉积模式及其演化特征的约束下人机交互分析是更为合理的测井相研究方法。
The characteristics of the bore logs in Hongtai Gas Field were rather peculiar and the functions to designate the sedimentary microfacies by means of the shape of the bore logs were not satisfied. By integrating the parameters of electrical property, the core analysis data, geological information and the sedimentary microfacies of key wells, the discriminant models of the lithologic character and the sedimentary microfacies were built by using the discriminant analysis based on the electrical property in Hongtai Gas Field. The program to discriminate the lithologic characters and the sedimentary microfacies was achieved by using Carbonsoft Intell Explore (a geologic research software) based on the discriminant model, it raised the efficiency of geologic research through automatic discrimination of the lithologic characters and the interactive identification of the sedimentary microfacies. The study shows that the sedimentary formation in different geological structureal backgrounds and depositional environment have different lithologic and electrical characteristics. The key of electrofacies analysis is to select the correct electrical properties which can reflect the lithologic characters and the sedimentary microfacies and build the mapping between them. The interactive analytical approach based on regional sedimentation model and evolutionary pattern is more reasonable in electrofacies analysis.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2008年第4期99-103,共5页
Journal of Oil and Gas Technology
关键词
测井相
岩性识别
沉积微相
判别模型
红台气田
electrofacies
lithologic discrimination
sedimentary microfacies
discriminant model
Hongtai Gas Field
