COMPREHENSIVE RESERVOIR EVALUATION OF CHANG-6 OIL-BEARING LAYERS IN MIDWEST ORDOS BASIN
-
摘要: 利用灰色系统理论对储层进行综合评价。首先采用谱系聚类分析方法,选择相对独立的评价参数,从9个参数中选择6个用于储层综合评价,分别是:砂岩厚度、砂地比、泥质含量、变异系数、孔隙度、渗透率。并用灰色系统理论关联分析法,确定各参数的权系数。在计算储层综合评价指标值的基础上,采用拐点法确定储层综合评价的分类阈值,进而对鄂尔多斯盆地中西部地区长6油层组进行储层综合定量评价,取得较好效果。其中,三角洲前缘水下分流河道主体以Ⅰ类、Ⅱ类储层为主,三角洲前缘水下分流河道侧翼以Ⅲ类储层为主。Abstract: The Grey System Theory is applied on reservoir evaluation.Firstly,the pedigree cluster analysis is used to choose relatively independent parameters.For reservoir evaluation,6 parameters,including thickness of sandstone,ratio of sand body,shale content,variation coefficient,porosity and permeability,are selected from 9 parameters of reservoir.At the meantime,the Grey System Theory correlation analysis is applied to confirm various weight coefficients.Based on the calculation of reservoir comprehensive evaluating values,critical point analysis is used to determine the threshold value of comprehensive reservoir evaluation.The comprehensive reservoir quantitative evaluation is conducted on Chang-6 oil-bearing layers in the Midwest Ordos Basin.The submersed distributary channel sand bodies of delta front are mainly Type Ⅰ and Type Ⅱ,and the submersed distributary channel wings are mainly Type Ⅲ.
-
Key words:
- Grey System /
- weight coefficient /
- Chang-6 oil-bearing layers /
- reservoir evaluation /
- Ordos Basin
-
[1] 李海华,张彦霞,王保华.松辽盆地长岭断陷层碎屑岩储层微观特征研究[J].石油实验地质,2009,31(6):557-562. [2] 裘亦楠,薛叔浩.油气储层评价技术[M].北京:石油工业出版社,1997. [3] 孙红志,刘吉余.储层综合定量评价方法研究[J].大庆石油地质与开发,2004,23(6):8-10. [4] 吕红华,任明达,柳金诚.Q型主因子分析与聚类分析在柴达木盆地花土沟油田新近系砂岩储层评价中的应用[J].北京大学学报,2006,42(6):740-745. [5] 邓聚龙.灰色预测与决策[M].武汉:华中理工大学出版社,1992. [6] 易德生,郭萍.灰色理论与方法[M].北京:石油工业出版社,1992. [7] 刘吉余,彭志春,郭晓博.灰色关联分析法在储层评价中的应用[J].油气地质与采收率,2005,12(2):13-15. [8] 宋子齐,王静,路向伟,等.特低渗透油气藏成岩储集相的定量评价方法[J].油气地质与采收率,2006,13(2):21-23. [9] 谭河清,彭存仓,武国华,等.灰色聚类分析在孤东地区油气勘探中的应用[J].石油与天然气地质,2003,24(1):97-101. [10] 赵虹,党犇,姚泾利,等.鄂尔多斯盆地姬塬地区延长组长2低阻油层成因机理[J].石油实验地质,2009,31(6):588-592. -
计量
- 文章访问数: 3099
- HTML全文浏览量: 81
- PDF下载量: 971
- 被引次数: 0
下载:
苏公网安备32021102000780号