油气地质

跃进二号油田下干柴沟组下段Ⅰ-11号小层河口坝增生体的精细表征

  • 李国玉 ,
  • 陈启林 ,
  • 白云来 ,
  • 廖建波
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  • 1.西南石油大学地球科学与技术学院,四川成都 6105002.中国石油青海油田分公司,甘肃敦煌 736202
牟中海( 1960- ),博士,教授,主要从事石油地质学与油藏描述方面的研究工作。 地址:( 610500 )四川省成都市新都区新都大道 8 号。电话:( 028 ) 83037170 。 E-mail : SWPUMZH@163.com

网络出版日期: 2014-11-20

基金资助

中国石油天然气股份有限公司重大科技专项“柴达木盆地老区稳产提高采收率技术研究”(编号:2011E-0306)资助

Fine characterization of accreting body of mouth bar in Ⅰ-11 sublayer at lower member of Lower Gancaigou Formation in Yuejin Ⅱ Oilfield

  • LI Guoyu ,
  • CHEN Qilin ,
  • BAI Yunlai ,
  • LIAO Jianbo
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  • 1. School of Geoscience and TechnologySouthwest Petroleum UniversityChengdu 610500China2.PetroChina Qinghai Oilfield CompanyDunhuang
    736202
    GansuChina

Online published: 2014-11-20

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摘要

根据测井及地质资料,应用储层构型分析法,对柴达木盆地跃进二号油田下干柴沟组下段Ⅰ-11号小层河口坝进行了精细分析。 研究认为,下干柴沟组下段Ⅰ-11号小层存在 2 个河口坝、2 种构型单元及 5 个河口坝增生体。 河口坝顶底界受限于以隔层为识别标志的5 级界面,河口坝增生体之间则为以泥岩夹层为识别标志的 4 级界面。 对构型单元空间组合类型的研究表明,在垂直物源方向上,存在河口坝与河口坝的拼接、河口坝与席状砂的拼接及河口坝的侧积3 种类型;在平行物源方向上,存在河口坝的前积和河口坝的退积 2 种类型;在纵向上,构型单元之间可见加积正旋回和加积反旋回特征,构型单元内主要表现为反韵律,其次是正韵律特征。在上述研究的基础上,编绘了 5 个河口坝增生体的平面分布图。

本文引用格式

李国玉 , 陈启林 , 白云来 , 廖建波 . 跃进二号油田下干柴沟组下段Ⅰ-11号小层河口坝增生体的精细表征[J]. 岩性油气藏, 2014 , 26(6) : 8 -14 . DOI: 10.3969/j.issn.1673-8926.2014.06.002

Abstract

This paper analyzed the mouth bar in the E31 Ⅰ-11 sublayer in YuejinⅡ Oilfield of Qaidam Basin by using well logging, geological data and application configuration analysis. The research suggests that there developed two mouth bars, two kinds of configuration units and five accreting bodies in the E31 Ⅰ-11 sublayer. Mouth bar is limited by restraining barrier as the identification of fifth interface,between accreting bodies is mudstone interlayer as the identification of fourth interface. According to the research of the configuration units combination in space, splicing between two mouth bars, mouth bar and sheet bar splicing, and mouth bar lateral accretions exist in the direction vertical to the source, and mouth bar progradation and retrogradation exist in the direction parallel to the source. There are aggradation-positive cycle and aggradation-reverse cycle between configuration units on the vertical. Reverse rhyme is the main characteristic in configuration unit, followed by positive rhythm. On the basis of the above research, the plane distribution map of five accreting bodies was completed.

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