石油学报 ›› 2015, Vol. 36 ›› Issue (s1): 21-30.DOI: 10.7623/syxb2015S1003

• 地质勘探 • 上一篇    下一篇

束鹿凹陷沙河街组三段下亚段泥灰岩-砾岩岩石学特征

崔周旗1,2, 郭永军1, 李毅逵3, 吴健平1, 李彬1, 李长新1, 李莉1, 于作刚1, 赵伟森4   

  1. 1. 中国石油华北油田公司勘探开发研究院 河北任丘 062552;
    2. 中国石油华北油田公司数据中心 河北任丘 062552;
    3. 中国石油集团渤海钻探工程有限公司第二录井公司 河北任丘 062552;
    4. 中国石油华北油田公司勘探部 河北任丘 062552
  • 收稿日期:2015-02-21 修回日期:2015-07-20 出版日期:2015-11-30 发布日期:2015-12-09
  • 通讯作者: 郭永军,男,1963年4月生,1986年毕业于河北地质学院地质系,现为中国石油华北油田公司勘探开发研究院沉积实验室主任、高级工程师,主要从事岩矿鉴定及储层研究工作。Email:yjy_gyj@petrochina.com.cn
  • 作者简介:崔周旗,男,1967年10月生,1991年毕业于西北大学地质系,2005年获西北大学博士学位,现为中国石油华北油田公司数据中心副主任、高级工程师,主要从事沉积学及盆地分析研究和管理工作。Email:yjy_czq@petrochina.com.cn
  • 基金资助:

    中国石油天然气股份有限公司重大科技专项(2014E-035)资助。

Calcilutite-rudstone petrological characteristics in the lower part of Member 3 of Shahejie Formation, Shulu sag

Cui Zhouqi1,2, Guo Yongjun1, Li Yikui3, Wu Jianping1, Li Bin1, Li Changxin1, Li Li1, Yu Zuogang1, Zhao Weisen4   

  1. 1. Research Institute of Petroleum Exploration and Development, PetroChina Huabei Oilfield Company, Hebei Renqiu 062552, China;
    2. Data center of PetroChina Huabei Oilfield Company, Hebei Renqiu 062552, China;
    3. 2nd Logging Company, CNPC Bohai Drilling Engineering Company Limited, Hebei Renqiu 062552, China;
    4. Exploration Department of PetroChina Huabei Oilield Company, Hebei Renqiu 062552, China
  • Received:2015-02-21 Revised:2015-07-20 Online:2015-11-30 Published:2015-12-09

摘要:

束鹿凹陷沙河街组三段下亚段泥灰岩-砾岩段是一套特殊的致密油气储层。随着束鹿凹陷致密油气勘探逐步推进,泥灰岩-砾岩段岩石类型的划分及其岩石学特征的研究直接决定了不同尺度下岩性的识别和优势储层岩性的优选。以系统取心井岩心观察、岩矿鉴定和X-射线衍射全岩分析资料为基础,从宏观到微观系统研究了岩石类型、岩石学特征、优势储层岩性分布,提出了泥灰岩-砾岩多维岩性分类方案,系统分析了泥灰岩、砾岩、砂岩和泥岩等4大类、10种岩石类型的岩石学特征,并优选了纹层状泥灰岩和颗粒支撑陆源砾岩2种优势储层岩性,为该区优势储层段和储层"甜点"区预测提供依据。

关键词: 岩石类型, 岩石学特征, 优势岩性, 沙河街组三段下亚段, 束鹿凹陷

Abstract:

Calcilutite and rudstone in the lower part of Member 3 of Shahejie Formation, Shulu sag, is a unique tight hydrocarbon reservoir. With gradual exploration of tight oil and gas in Shulu sag, lithology identification under different scales and optimization of dominant reservoir lithology are directly determined by division of rock types and researches of petrological characteristics of calcilutite and rudstone. Based on systematical core observation, rock-mineral determination and whole-rock X-ray diffraction analysis data, rock types, petrological characteristics and distribution of dominant reservoir lithology were systematically studied from macro to micro scope, and a multidimensional lithological classification scheme for calcilutite and rudstone was proposed. Moreover, petrological characteristics of 10 rock types in four major types, i.e., rudstone, sandstone, calcilutite and mudstone, were also systematically analyzed. Meanwhile, two types of dominant reservoir lithology, i.e., laminated calcilutite and grain-supported terrigenous rudstone, were optimally taken as the regional dominant lithoghy, providing suggestions for optirnization of dominant hydrocarbon reservoir and "sweet spot".

Key words: rock types, petrological characteristics, dominant lithology, lower part of Member 3 of Shahejie Formation, Shulu sag

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