石油与天然气地质 ›› 2008, Vol. 29 ›› Issue (1): 38-44.doi: 10.11743/ogg20080106

• 碎屑岩储层成因机理 • 上一篇    下一篇

沉积环境复杂地区地层划分对比方法——以鄂尔多斯盆地大牛地气田为例

罗东明1, 谭学群2, 游瑜春2, 刘建党2, 冯琼2, 刘忠群3   

  1. 1. 中国石油化工股份有限公司, 油田事业部, 北京, 100029;
    2. 中国石油化工股份有限公司石油勘探开发研究院, 北京, 100083;
    3. 中国石油化工股份有限公司华北分公司, 河南, 郑州, 450006
  • 收稿日期:2007-06-19 出版日期:2008-02-24 发布日期:2012-01-16
  • 基金项目:

    中国石油化工股份有限公司科技部攻关项目(P040087).

Stratigraphic division and correlation in areas with complicated sedimentary environment——a case study of Daniudi gas field in the Ordos Basin

Luo Dongming1, Tan Xuequn2, You Yuchun2, Liu Jiandang2, Feng Qiong2, Liu Zhongqun3   

  1. 1. Oilfield Department, SINOPEC, Beijing 100029, China;
    2. Research Institute of Petroleum Exploration & Production, SINOPEC, Beijing 100083, China;
    3. North China Company, SINOPEC, Zhengzhou, Henan 450006, China
  • Received:2007-06-19 Online:2008-02-24 Published:2012-01-16

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摘要：

鄂尔多斯盆地大牛地气田主要含气层位是上石炭统太原组和下二叠统山西组、下石盒子组.地层划分对比难度大,主要原因是河流沉积相变快、井网稀、工区大,使用单一的地层划分对比方法效果不好,研究之初现场存在多种认识方案.采用标志层法(引入煤层作为标志层和辅助标志层)、厚度法(相邻井地层厚度相当)、层序地层学法、密井网解剖法(从密井网解剖入手,认识地层变化规律,进而推广到稀疏井网)4种方法相互结合、闭合对比,并应用合成地震记录标定(只针对砂组)和层面建模进行校验,形成了一套沉积环境复杂地区地层划分对比的综合方法,建立了一套新的地层划分对比方案,统一了地层认识,取得了较好的应用效果.

关键词: 标志层, 等厚法, 层序, 地层划分对比, 煤层, 大牛地气田, 鄂尔多斯盆地

Abstract:

The main gas-bearing horizons in Daniudi gas field of Ordos basin is the Upper Carboniferous Taiyuan,Lower Permian Shanxim and Xiashihezi Formations.Stratigraphic division and correlation are difficult because of rapid change of fluvial facies,sparse well pattern,and large project area in the field.Single stratigraphic division and correlation method failed to work effectively.At the very beginning of the study,there were several schemes as for how to solve the problems.As a result,a composite method of stratigraphic classification and correlation suitable for complicated sedimentary environment are developed by integrating the marker bed method(introducing coal seams as markers and supplementary horizon markers),the isopach method(the same layer having similar thickness) in adjacent wells,the sequence stratigraphy method,and the dense well pattern analysis method(i.e.,applying knowledge obtained from analysis of dense well pattern to sparse well pattern).By doing that,this paper presents a new scheme of stratigraphic division and correlation,which have been used successfully in real practice and achieved a unified understanding of the formations in the study area.

Key words: marker bed, isopach method, sequence, stratigraphic division and correlation, coal seam, Daniudi gas field, Ordos Basin

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