测井信息地质属性的论证分析

The validation of geological characteristics in logging information

以岩电实验为基础的测井分析方法,主要应用测井技术的地球物理属性.随油气勘探开发目标的日益复杂,这种以地球物理作为测井曲线成因基础的方法,在地质应用中日益显现其局限性,其突出问题是,难以识别测井曲线本身隐含的地质信息.本文针对前文提出的"测井信息的地质属性"这一概念,以地质背景中的物质及其变化关系为分析线索,应用7个实例分析、论证了测井曲线与其所测量地质背景间的内在关系,并尝试讨论二者间的三个分类关系:测井信息与地质事件存在结构对应关系、成因专属关系及宏观与微观的特征统一关系.三种关系表明测井曲线本身内含三类地质属性,即对应性、专属性和统一性.其中,弄清楚测井信息与地质背景的对应性,有助于利用测井信息还原某些地质事件;弄清楚测井响应与某些地质事件的专属性,有助于识别或推测测井曲线隐含的重要地质现象;弄清楚测井信息与其地质背景间存在宏观地质作用与微观岩层结构的统一性,有助于利用测井技术预测油气勘探开发部署.

The well logging analysis method based on rockelectric experiments mainly uses well logging technology＇s geophysical properties.The method that put well logs genesis on the basis of physical geography has its limitations increasingly in the geological application.The outstanding problem is geological information of well logs stand for cannot be identified easily.Large amount of geological evidence which was hidden in well logging information lacks of effective identified theoretical basis.The identification of the recessive well logging geological information has become the critical technical problem in the development of well logging geology.Indicated by the concept of geological properties of well logging information,the paper analyses geological substances and their changing relationships, and demonstrates the inherent relationship between well logging information and geological background though the application of seven instance analysis.Three taxonomic relations between well logging information and geological background are tried to discuss.There are structural correspondence relations between well logging information and geological events;exclusive genesis relations between well logging information and geological events and the unity relations between macroscopic characteristics and microcosmic characteristics.The three relations show out that these well logs have three geological properties for their own,which are correspondence,specialization and unification.Finding out the correspondent relations between well logging information and geological background can help petroleum engineer to describe or restore some geological events using the well log curves＇ shape;digging the specialized relations between well logging information and some geological events can help petroleum engineer to identify or speculate some important connotative geological phenomena with well logging curses＇ information;exploring the unified relations between the geological process of macroscopically and reservoir structure of microcosmic which exist in well logging information and geological background can help petroleum engineer to predict arrangements of exploration and exploitation of oil and gas using the well logging technology.