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中文摘要：
应用测井技术识别地质事件时,对具有隐蔽测井信息结构变化的识别涉及较少,限制了认知地质事件的精度和可靠性。而根据测井记录的地质响应及其相关测井信息组合特征,研究重要地质事件的多样性与测井曲线之间的成因关系,以及测井曲线纵、横向变化与地质演变的成因关系,可以探索性地解决上述问题。运用该方法可识别出碎屑岩和碳酸盐岩地质事件并推断其成因机理。通过对地质事件表现形式多样性的分析,提出了碎屑岩地质事件的识别和论证方法;通过同成因地质界面的识别与追踪,提出了碳酸盐岩＂同期异相＂地层对比问题的识别方法和依据。地层的岩性成因机制不同,碎屑岩和碳酸盐岩地层的地质事件研究方法也有所不同,二者的识别差别在于地质界面的追踪依据不同、地质界面的测井响应特征不同以及测井信息与地质界面识别的对应关系不同。应用该方法,成功解决了大港油田、普光气田以及澳大利亚等国内外油气探区地质研究中地质界面识别的关键问题。
英文摘要：
Log technique have been employed in the recognition of many meaningful geological events.However,the subtle changes of logs are seldom recognized and used,thus limiting the accuracy and reliability of interpretation.The issue could be tackled be establishing genetic relationships between the variety of important geological events and logs,and that between geological evolution and the vertical and horizontal changes of the logs based on a comprehensive study on geological responses and the combined features of associated logs.The method is used to identify geological events of clastic and carbonate rocks as well as their formation mechanism.Based on an analysis of the variety of geological events,an approach for identifying geological events of clastic rocks is proposed.Through identification and tracing of isogenesis geologic boundaries,an approach for identifying contemporaneous carbonate rocks of different facies.Approaches for identifying geological events of these two kinds of rocks are different as they vary in lithology and genesis.Their major differences include tracing basis and log responses of geologic boundary,and corresponding relationships between log data and geologic boundaries.Application of the above-mentioned methods in Dagang Oilfield,Puguang Gasfield and many other fields in Australia has successfully solved the problem of identifying geologic boundaries.
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Formation mechanism of carbonate cemented zones adjacent to the top overpressured surface in the cen
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