用“成分-结构”分类法识别古潜山变质岩岩性——以渤海海域太古界为例

doi:10.12108/yxyqc.20210616

岩性油气藏 ›› 2021, Vol. 33 ›› Issue (6): 156–164.doi: 10.12108/yxyqc.20210616

用“成分-结构”分类法识别古潜山变质岩岩性——以渤海海域太古界为例

叶涛^1,2, 牛成民¹, 王清斌¹, 高坤顺¹, 孙哲¹, 陈安清²

1. 中海石油 (中国) 有限公司天津分公司天津 300459;
2. 成都理工大学沉积地质研究院成都 610059

收稿日期:2021-03-25 修回日期:2021-06-02 出版日期:2021-12-01 发布日期:2021-11-25
第一作者:叶涛(1987-),男,成都理工大学在读博士研究生,高级工程师,主要从事含油气盆地综合分析与沉积储层地质研究。地址:(300459)天津市滨海新区海川路2121号渤海石油管理局B座。Email:tao_y2012@163.com。
基金资助:
国家油气重大专项“渤海海域勘探新领域及关键技术研究”（编号：2016ZX05024-003）资助

Identification of metamorphite lithology in paleo buried hill by compositionstructure classification: A case study from Archean in Bohai Sea

YE Tao^1,2, NIU Chengmin¹, WANG Qingbin¹, GAO Kunshun¹, SUN Zhe¹, CHEN Anqing²

1. Tianjin Branch of CNOOC Ltd., Tianjin 300459, China;
2. Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, China

Received:2021-03-25 Revised:2021-06-02 Online:2021-12-01 Published:2021-11-25

摘要/Abstract

摘要： 变质岩潜山岩性对储层发育具有重要控制作用。为了有效识别变质岩潜山岩性，以渤海海域油气钻井资料为基础，建立基于“成分-结构”的变质岩测井-地质学分类方案，探索兼顾岩石结构的岩性测井识别方法。结果表明，区域变质作用以及中基性岩脉的侵入共同控制了太古界复杂的岩性组合，形成了铁镁质侵入体与长英质变质花岗岩系2大岩类，而差异混合岩化作用将变质花岗岩进一步复杂化。基于矿物、元素分析以及岩心观察，确立了成分4分、结构3分的划分方案，建立了渤海海域太古界测井地质学分类方案。基于该方案，构建了不同岩性的测井交会识别图版，重点建立了岩石结构的常规测井及成像测井识别方法。通过对取心井的回判，识别结果与地质认识一致。此方法为变质岩岩性的识别提供了一种新的思路。

关键词: 岩性识别, 测井-地质分类, 潜山, 太古界, 渤海海域

Abstract: The lithology of metamorphic buried hill plays an important role in controlling reservoir development. In order to identify lithology of metamorphic buried hill effectively, the well-logging identification methods based on component-structure classification of metamorphite were studied with the data of boreholes in Bohai Sea. The results show that migmatization and intrusion of intermediate basic magma are the main controlling factors for the complex lithologic association of Archean, which control the formation of femic intrusion and the felsic metamorphite, and the migmatization makes the metamorphic granite more complex. Based on mineral and element analysis and core observation, the division scheme of four components and three structures was established, and the classification scheme of Archean well logging geology in Bohai Sea area was established. Based on this scheme, the identification chart of logging intersection for different lithologies were constructed, and the conventional logging and imaging logging identification methods for rock structure were established. The identification result is consistent with the geological understanding through the back judgment of coring well. This method provides a new thinking for identification of metamorphite.

Key words: lithology identification, logging-geology classification, buried hill, Archean, Bohai Sea

中图分类号:

TE122.2

叶涛, 牛成民, 王清斌, 高坤顺, 孙哲, 陈安清. 用“成分-结构”分类法识别古潜山变质岩岩性——以渤海海域太古界为例[J]. 岩性油气藏, 2021, 33(6): 156–164.

YE Tao, NIU Chengmin, WANG Qingbin, GAO Kunshun, SUN Zhe, CHEN Anqing. Identification of metamorphite lithology in paleo buried hill by compositionstructure classification: A case study from Archean in Bohai Sea[J]. Lithologic Reservoirs, 2021, 33(6): 156–164.

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用“成分-结构”分类法识别古潜山变质岩岩性——以渤海海域太古界为例

Identification of metamorphite lithology in paleo buried hill by compositionstructure classification: A case study from Archean in Bohai Sea

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