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储层岩相的分形识别

Fractal Identification of the Reservoir Lithofacies

【作者】 刘爽

【导师】 蔺景龙;

【作者基本信息】 大庆石油学院 , 地球探测与信息技术, 2005, 硕士

【摘要】 岩相作为储层的重要参数之一,一直以来是国内外石油工作者关注和致力解决的重要研究课题。并且砂岩相是当今石油的主要储集层,因此识别储集层的岩相是十分必要而且是非常有意义的工作。 对于储层岩相的研究,全文共分为四大部分,建立了预测储层岩相的模型: 第一部分,介绍分形几何学的基本原理,其中包括分形几何学理论的背景及现状、分形几何学的数学基础、分形维数的测定方法,为后面的探讨奠定了坚实的基础。 第二部分,介绍千 12 块兴隆台油层储层特征,其中包括沉积条件分析、岩石相特征、储层岩石性质、储层物性、储层孔隙结构特征,其中岩相特别重要,这部分为下一章储层岩相的识别奠定了基础。 第三部分,介绍储层岩石的分形特征与岩心分维数的计算,其中包括岩石的孔隙结构、地层及岩石结构的分形特征、岩石孔隙的分形特征及计算方法,计算出 4 口岩心井在不同深度处的分维值,为后面的效果分析奠定了基础。 第四部分,介绍测井曲线的分维数计算方法和实际处理,其中包括分维的地质意义与测井曲线自相似研究、测井曲线的预处理、测井曲线分维数的计算方法、处理结果及影响因素、利用测井曲线关联维方法预测未知储层岩相。这部分是文章的重点,也是利用分形理论识别储层岩相的过程,从而引入了一种全新的方法。并且利用测井曲线关联维计算方法预测了 2 口井的储层岩相。

【Abstract】 Lithofacies is one of the key reservoir parameters in oil fields, which has been given most attention and effort by petroleum engineers and well logging experts as the important question for discussion both in board and overseas. And the sandstone lithofacies is the primary type of hydrocarbon reservoirs now. So it is the completely necessary and very significative task to identify the reservoir lithofacies.  The thesis includes four parts basically, and one model was established to forecast the reservoir lithofacies for studying the reservoir lithofacies: In the first part, it was introduced to the basic principle of fractal geometry, among which includes the background and the present situation of the fractal geometry theory and among which includes the mathematics foundation of the fractal geometry and among which includes the measurement method of the fractal dimension, which has established the solid foundation for the back inquirement. In the secong part, it was introduced to the XingLong Tai oil reservoir characteristic of the Qian Twelve Block, among which includes the deposit condition analysis and lithofacies characteristic and rock characteristic and matter of  reservoir and pore structure characteristic of reservoir, among which lithofacies is especially important, which has established the foundation for the identification of lithofacies of reservoir in the next chapter. In the third part, it was introduced to the fractal characteristic of reservoir rock and the calculation of the fractal dimension, among which includes the pore structure of rock,  among which includes the fractal characteristic of the  structure of the formation and rock ,among which includes the fractal characteristic and computational method. Calculate the fractal dimension of four core wells at the different depth, which has established the foundation for the next effictiveness analyses.  In the four part, it was introduced to the computional method of the fractal dimension and the reality handle of the well logging curves, among which includes the computational method of the fractal and resemblance research of the well logging curves, among which includes pretreatment of the well logging curves, among which includes the fractal dimension computional method and result and influence factor, among which includes forecasting the  unkown lithofacies utilization of the GuanLianwei method of the well logging curves. This part is the point of article ,and also is the course of identifying lithofacies to make use of the fractal theory, which was introduced to a completely new method. And I forecasted the reservoir lithofacies of two mouthfuls of wells using the GuanLianwei method of the well logging curves.

【关键词】 岩相储集层分形几何学分形维数
【Key words】 lithofaciesreservoirfractal theoryfractal dimension
  • 【分类号】P618.13
  • 【被引频次】13
  • 【下载频次】2442
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