隐性测井地质信息的识别方法

Method exploration of implicit logging geological information research

利用测井资料识别地质现象长期面临认知难题,即测井技术以地球物理为理论基础,却试图解决地质与工程问题.对于复杂地层,难免存在模型转换衔接的问题,造成测井评价的结构性矛盾.这一结构性矛盾,常使测井曲线与其内含的地质信息之间难以找到清晰准确的转换关系,导致绝大部分地质事件被测井信息以隐性方式或密码记录.长期以来,测井信息隐含的大量地质证据缺乏识别的理论基础,隐性测井地质信息的识别已成为测井地质学发展的关键技术问题.以某些特殊测井响应或可识别的边界为切入点,通过岩矿成因机理、堆积方式及其形成背景等因素在测井信息上的密码解读,利用成因关系、差异比较等方法的测井信息地质属性研究,是开展隐性测井地质信息研究的有效手段.论文根据该方法提出测井信息与地质背景的专属性信息和对应性信息的识别原理及技术依据,进一步指出宏观与微观的统一性是隐性测井地质信息研究的核心方法论.实践表明,测井信息具有3个重要的地质属性,即专属性、对应性和宏观与微观的统一性.前两者是识别隐性测井地质信息的理论基础,后者是确定臆性测井地质信息识别正确与否的有效方法.

For a long time,the identification of geological phenomenon which was based on well logging information has the problem that well logging which is based on geophysical theory try to solve the geology and engineering question instead.Facing the complicated reservoirs,the well logging technology may have models transformation and connecting problem.The problem will cause structural contradiction of well logging evaluation.The contradiction which will produce unclear transformation relationship between well logs and their geological information causes most of geologic events that were recorded by well logging information in a hidden form or using a code record.For a long period,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.The most efficient methods to study the recessive well logging geological information contain putting some particular well logging response or recognized boundary as a entry point,decoding the key information in well logging curves information though rock genesis mechanism,accumulation style and forming background et al,and doing some research about geological properties of well logging information though genetic relationship and difference compassion methods.The paper puts forward that these methods are identification principles and technical basis of well logging information and proprietary information and correspondent information of geological background.The paper further points out that the unity between macro and micro is the core methodology research of the recessive well logging geological information.Practice proves that well logging information has three important geological attributes.There are specialization,correspondence and the unity between the macro and micro.Former two are theoretical basis of identifying recessive well logging geological information.The latter one is an effective method of distinguishing true or false about identifying recessive well logging geological information.