岩性油气藏 ›› 2016, Vol. 28 ›› Issue (6): 78–87.doi: 10.3969/j.issn.1673-8926.2016.06.011

• 油气地质 • 上一篇    下一篇

东濮地区奥陶系沉积相特征及其演化

肖菁1,2,季汉成1,2,华南1,2,房超1,2,李海泉3,马鹏鹏4   

  1. 1.中国石油大学(北京) 地球科学学院,北京102249; 2.中国石油大学(北京) 油气资源与探测国家重点实验室,北京102249; 3.中国石化新星双良地热能热电有限公司,太原030006;4.中国石化集团新星石油有限责任公司新能源研究院,北京100089
  • 收稿日期:2016-04-09 修回日期:2016-06-28 出版日期:2016-11-10 发布日期:2016-11-10
  • 第一作者:肖菁(1990-),女,中国石油大学(北京)在读硕士研究生,研究方向为沉积与储层地质学。地址:(102249)北京市昌平区府学路18 号中国石油大学地球科学学院。E-mail:shawjingbao@sina.com
  • 基金资助:
    中国石化集团新星石油有限责任公司科技攻关项目“东濮凹陷废弃井选区及内黄隆起西侧奥陶系岩溶热储研究”(编号:10500000-14-FW0399-0003)资助

Characteristics and evolution of the Ordovician sedimentary facies in Dongpu area, Bohai Bay Basin

Xiao Jing 1,2, Ji Hancheng 1,2, Hua Nan 1,2, Fang Chao 1,2, Li Haiquan 3, Ma Pengpeng4   

  1. 1. College of Geosciences, China University of Petroleum (Beijing), Beijing 102249, China; 2. State key Laboratory of Petroleum Resource an Prospecting, China University of Petroleum (Beijing), Beijing 102249, China;3. Sinopec Star-Shuangliang Geothermal Energy Phroelectricity Co., Ltd., Taiyuan 030006, China;4. New Energy Research Institute of Star Petroleum Co., Ltd., Sinopec, Beijing 100089, China
  • Received:2016-04-09 Revised:2016-06-28 Online:2016-11-10 Published:2016-11-10

摘要: 东濮地区奥陶系沉积相展布规律认识不清,严重制约了油气的勘探和开发。以露头、岩心、薄片和测录井等资料为基础,通过地层岩石、古生物、沉积结构和沉积构造等特征的分析,对东濮地区奥陶系沉积相进行了精细研究,将奥陶系划分为开阔台地、局限台地、蒸发台地 3 种沉积亚相及 11 种沉积微相,利用“单因素分析多因素综合作图法”编制了奥陶系各沉积期沉积微相平面图,为储层发育有利沉积相带的研究提供了基础,进而结合海平面变化和沉积微相特征,分析了沉积演化规律。研究区开阔台地主要发育颗粒滩、滩间海和云灰坪 3 种沉积微相;局限台地发育多种类型潮坪和泻湖沉积,共计 10 种沉积微相;蒸发台地发育云坪、灰云坪、膏云坪 3 种沉积微相。东濮地区奥陶系在 1 个海退半旋回和 3 个完整的海侵—海退旋回的控制下,蒸发台地、局限台地和开阔台地交互沉积。其中,海退期沉积的冶里组、亮甲山组、上马家沟组下段、峰峰组下段和峰峰组上段上部,主要由局限台地和蒸发台地环境下的各类型潮坪和泻湖沉积构成;海侵期沉积的下马家沟组、上马家沟组上段和峰峰组上段,主要由开阔台地环境下的滩间海和小规模颗粒滩沉积构成,局部发育局限台地沉积。

关键词: 油源断裂, 输导期, 生排烃高峰期, 时间有效性, 研究方法

Abstract: The understanding of the Ordovician sedimentary facies distribution in Dongpu area is unclear, which restricts the hydrocarbon exploration and development. Based on the data of outcrops, cores, thin sections and logging,combined with stratigraphy, petrology, paleontology, sedimentary texture and structure, the Ordovician sedimentary facies in Dongpu area was divided into three types of subfacies (open platform, restricted platform and evaporate platform)and eleven types of microfacies. According to “single factor analysis and multi factor comprehensive mapping method”,the map of the Ordovician sedimentary microfacies was compiled. The sedimentary evolution rule was analyzed according to the sea level change and sedimentary microfacies characteristics. The open platform developed three types of sedimentary microfacies: grain banks, interbank sea and dolomitic lime flat. The restricted platform developed ten kinds of sedimentary microfacies, such as tidal flat and lagoon. The evaporate platform developed three kinds of sedimentary microfacies: dolomitic flat, lime dolomitic flat and gypseous dolomite flat. The Ordovician have experienced three and a half transgression-regression cycle from Yeli to Fengfeng period in Dongpu area. During regression period, Eli Formation and Liangjiashan Formation, the upper Majiagou Formation, the lower Fengfeng Formation and the top of upper Fengfeng Formation are composed of tidal flat and lagoon subfacies in the restricted platform and evaporation platform. During transgression period, the lower Majiagou Formation, the top of upper Majiagou Formation and the top of Fengfeng Formation are composed of the interbank sea and the small scale grain bank subfacies in open platform and the local restricted platform environment.

Key words: oil-source fault, transporting stage, peak stage of hydrocarbon generation and expulsion, time effectiveness, research method

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