大庆石油地质与开发

2007, No.124(06) 11-15+19

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乌尔逊凹陷大一段泥岩盖层综合评价
Comprehensive evaluation to K1d1 cap rock in Wuerxun depression

张元玉,孙慧宁,鲁青春
ZHANG Yuan-yu1,SUN Hui-ning1,LU Qing-chun2 (1.Exploration and Development Research Institute of Daqing Oilfield Company Ltd.

摘要(Abstract):

为评价乌尔逊凹陷大一段泥岩盖层条件,在对其宏观发育特征及微观封闭能力进行研究的基础上,利用灰色系统理论,定义并求取了评价泥岩盖层的综合评价参数,确定了评价盖层条件优劣的盖层评价标准,对乌尔逊凹陷大一段泥岩盖层条件进行了评价,结果表明乌尔逊凹陷大一段好等级泥岩盖层分布在凹陷的大部分地区,较好等级位于凹陷南部及北部,范围相对较小,中等等级仅在凹陷的南部及北部的局部地区有所分布。
In order to evaluate k1d1 mud cap rock in Wuerxun depression,the comprehensive evaluation parameters for mud cap rock are defined and calculated based on the research on the cap rock's macro development characteristics and micro sealing ability with the respect of gray system theory.The cap rock evaluation standards are determined to evaluate k1d1 cap rock in Wuerxun depression.The evaluation results suggest that good mud cap rocks distribute in most parts of Wuerxun depression,better ones lie in north part and south part of the depression,and medium ordered ones with relatively small range only distribute in partial area of the north and south parts of the depression.

关键词(KeyWords): 乌尔逊凹陷;大一段;盖层;评价
Wuerxun depression;Member Da1;cap rock;evaluation

Abstract:

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基金项目(Foundation): 国家973重大基础研究项目(2001CB209104)资助

作者(Author): 张元玉,孙慧宁,鲁青春
ZHANG Yuan-yu1,SUN Hui-ning1,LU Qing-chun2 (1.Exploration and Development Research Institute of Daqing Oilfield Company Ltd.

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