鄂尔多斯盆地天环坳陷两翼侏罗系隐蔽性油藏富集规律研究
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摘要
鄂尔多斯盆地西部坳陷以西受燕山运动构造影响,地层挤压形成多个断裂,断层以逆断层为主,而逆断层上盘形成牵引形成褶皱背斜构造,油气主要沿断层面运移,在褶皱背斜(穹隆)部位成藏。复杂地理环境导致了油藏的复杂与隐蔽,具有油藏个数多、含油层系多、油水关系复杂、断块分散的特征,这就给勘探开发及油藏产能建设带来很大困难。该文主要针对隐蔽油藏特征研究有针对性总结出复杂隐蔽油藏成藏主控因素及成藏富集规律,从规律中找认识,从富集区找潜力,为下步增储建产评价方面提供部署依据及建产方向。
The western depression Ordos basin affected by west Yanshan tectonic movement,the formation of extrusion forming a plurality of faults,faults are mainly dominated by reverse faults,and the formation of upthrust traction form folds anticline, the main oil and gas migration along the fault plane,in the fold(Qionglong) site of accumulation.Complex geographical environment has led to the complex and subtle reservoir, reservoir is high and the oil-bearing strata,complex oil-water relationship, block dispersion characteristics,which gives the exploration and reservoir capacity construction difficult.This article mainly aimed at the characteristics of subtle reservoir research targeted summed up the complex subtle reservoir controlling factors of hydrocarbon accumulation and accumulation,from the rules for understanding, find potential from the rich region,to provide basis and direction for the deployment of construction production under the step reservoir built production evaluation.
The western depression Ordos basin affected by west Yanshan tectonic movement,the formation of extrusion forming a plurality of faults,faults are mainly dominated by reverse faults,and the formation of upthrust traction form folds anticline, the main oil and gas migration along the fault plane,in the fold(Qionglong) site of accumulation.Complex geographical environment has led to the complex and subtle reservoir, reservoir is high and the oil-bearing strata,complex oil-water relationship, block dispersion characteristics,which gives the exploration and reservoir capacity construction difficult.This article mainly aimed at the characteristics of subtle reservoir research targeted summed up the complex subtle reservoir controlling factors of hydrocarbon accumulation and accumulation,from the rules for understanding, find potential from the rich region,to provide basis and direction for the deployment of construction production under the step reservoir built production evaluation.
引文
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[5]汤锡元,郭忠铭.陕甘宁盆地西缘逆冲推覆构造及油气勘探[M].西安:西北大学出版社,1992.