| 鄂尔多斯盆地北部塔巴庙地区与地层挠曲变形有关的构造裂缝分布定量预测 |
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| 引用本文： | 周新桂,张林炎.鄂尔多斯盆地北部塔巴庙地区与地层挠曲变形有关的构造裂缝分布定量预测[J].地质力学学报,2005,11(3):215-225. |
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| 作者姓名： | 周新桂 张林炎 |
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| 作者单位： | 中国地质科学院地质力学研究所,北京,100081 |
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| 基金项目： | 中石化华北分公司资助项目 |
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| 摘 要： | 塔巴庙地区位于鄂尔多斯盆地北部伊陕斜坡构造带上,构造平缓,一般认为不具备裂缝发育条件。然而大量岩心观察、薄片分析、物性测试、测井及试井资料证实,研究区上古生界发育区域性分布的构造裂缝系统和与地层局部挠曲变形有关的局部构造裂缝系统。本文重点介绍与低幅度地层挠曲变形有关的裂缝预测方法,以及主要勘探层裂缝发育部位、发育程度和裂缝系统产状等成果。研究表明,地层挠曲变形主要发生于燕山期构造运动,喜马拉雅期对地层有一定改造作用。构造裂缝对致密储层储集性能作用意义不大,但对储层渗透率的改善作用明显。
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| 关 键 词： | 致密砂岩储层 挠度变形 裂缝预测 孔渗预测 鄂尔多斯盆地 塔巴庙地区 |
| 文章编号： | 1006-6616（2005）03-0215-11 |
| 收稿时间： | 2005-03-14 |
| 修稿时间： | 2005年3月14日 |
QUANTITATIVE PREDICTION OF THE DISTRIBUTION OF TECTONIC FRACTURES RELATED TO FLEXURAL DEFORMATION IN UPPER PALEOZOIC TIGHT SAND RESERVOIRS IN THE TABAMIAO AREA, NORTHERN ORDOS BASIN |
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| ZHOU Xin-gui,ZHANG Lin-yan.QUANTITATIVE PREDICTION OF THE DISTRIBUTION OF TECTONIC FRACTURES RELATED TO FLEXURAL DEFORMATION IN UPPER PALEOZOIC TIGHT SAND RESERVOIRS IN THE TABAMIAO AREA, NORTHERN ORDOS BASIN[J].Journal of Geomechanics,2005,11(3):215-225. |
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| Authors: | ZHOU Xin-gui ZHANG Lin-yan |
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| Institution: | Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, 100081, China and Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, 100081, China |
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| Abstract: | The Tabamiao area is located in the Yishaan slope tectonic belt in the north of the Ordos basin.The structure is gentle and it is commonly thought that there are no conditions for fracture growth.However,many regional tectonic fractures in upper Paleozoic reservoirs and local tectonic fractures related to localized flexural deformation of strata have been found in the study area through core observations,thin-section analysis,measurements of physical properties and well tests and logging.This paper mainly introduces the method of estimating tectonic fractures related to low-amplitude flexural deformation of strata and the sites and degrees of development of fractures and their attitudes in the target horizons.The research results show that flexural deformation mainly occurred in the Yanshanian and Himalayan periods and modified the strata to some extent.Tectonic fractures are of little significance for the accumulation performance of tight reservoirs but they apparently improve the permeability of the tight reservoirs. |
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| Keywords: | tight sand reservoir flexural deformation quantitative prediction of tectonic fracture prediction of porosity and permeability Ordos Basin Tabamiao area |
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