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地球学报  2008 

东营河125断层几何学特征及其对浊积扇和油藏的控制作用

DOI: 10.3975/cagsb.2008.01.12

Keywords: 弧扇对应,弧形断裂,浊积扇,东营凹陷,河125断层,东营,断层几何学,特征,远岸浊积扇,油藏,控制作用,Distribution,Reservoir,Sediment,Control,Fault,Characteristics,油气藏,断鼻,背斜,油源,沟通,储层物性,改善,储层展布

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Abstract:

通过对河125断层几何学特征的分析发现弧形断裂平行于断层走向剖面上表现为断槽、断脊组合;垂直于断层走向剖面上断层分为竖滑段、倾滑段和平滑段3段,生长指数规律为弧中大于弧翼,断层倾角规律为弧中小于弧翼.断裂的几何学特征与运动学特征具有相关性.断层几何学特征对浊积扇具有重要的控制作用:平面上,弧中位置浊积扇最发育,弧翼为不同浊积扇的分界线;断槽为浊积砂体的补给通道,断脊为扇体不同补给区的分水岭;垂向上,倾滑段下部发育远岸浊积扇,中上部发育滑塌浊积岩,形成典型的弧扇对应现象.断层对油藏的控制表现为:控制储层展布、改善储层物性、沟通油源和形成生长背斜及断鼻油气藏.

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