| 细粒岩层序地层学研究方法综述 |
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| 引用本文： | 吴靖,姜在兴,吴明昊.细粒岩层序地层学研究方法综述[J].地质科技通报,2015,34(5):16-20. |
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| 作者姓名： | 吴靖 姜在兴 吴明昊 |
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| 作者单位： | 1. 中国石油化工股份有限公司石油勘探开发研究院, 北京 100083; |
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| 摘 要： | 为了探索非常规油气优质细粒岩储层在地层中的展布规律,对国内外细粒岩层序地层学的研究现状进行了调研和探讨。结果表明,前人提出了多种研究方法与思路,包括运用矿物成分、岩相、地球化学、测井曲线及古生物等指标对细粒岩进行三-四级层序划分。少数学者关注五级层序(准层序)的研究,并依据测井及地球化学等指标进行划分。本文认为深度解析细粒岩的沉积学特征(岩相及成因等)是解决其层序问题的基础。对于三-四级层序的划分,可以分为垂向综合划分与横向对比追踪2个步骤进行。在所建立的三-四级层序格架内,以岩相及其组合为主线,结合矿物成分、地球化学元素含量与比值、测井、小波等指标,多方法共同分析、相互验证来划分准层序,最终建立从浅水至深水、从常规砂砾岩体至非常规细粒岩、贯穿全盆的各级层序格架。
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| 关 键 词： | 细粒岩 层序地层学 三-四级层序 准层序 岩相 |
| 收稿时间： | 2014-11-27 |
Summary of Research Methods About the Sequence Stratigraphy of the Fine-Grained Rocks |
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| Affiliation: | 1. Petroleum Exploration and Production Research Institute of SINOPEC, Beijing 100083, China;2. SINOPEC Key Laboratory of Shale Gas/Oil Exploration & Production, Beijing 100083, China;3. Faculty of Energy Resources, China University of Geosciences, Beijing 100083, China |
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| Abstract: | To analyze the distribution rule of high quality reservoir of fine grained rocks(FGR)of unconventional petroleum in the formation,domestic and abroad status of FGR sequence stratigraphy are researched and discussed.Resultsshow that a variety of methods are put forward to solve the difficulty of FGR sequence stratigraphy by the former scholars.Mineral composition,lithology,geochemistry,logging curves and bioturbation have been used to study the sequence stratigraphy of FGR,limited to the recognition of third-and fourth-order sequences.Division methods of the fifth-order sequence(parasequence)are proposed only by few scholars for FGR.It is identified and divided through the analysis of logging curves and organic geochemistry.This paper argues that the deep analysis of FGR sedimentary characteristics(lithofacies and causes)is the basis to solve its sequence division.Third-and fourth-order sequences division can be divided into two steps,vertical integrated division and transverse contrast tracking.In the stratigraphic framework of third-and fourth-order sequences,according to the lithofacies and in combination with the changes in mineral compositions,contents and ratios of geochemical elements,logging curves,and wavelet values,multi-method analysis and mutual verification are implemented in the division of parasequence.Eventually,from shallow water to deep water,from conventional glutenite to unconventional FGR,sequence framework can be built with all levels throughout the whole basin. |
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