鄂尔多斯盆地东北部奥陶系马家沟组成藏主控因素分析

发布时间：2018-05-05 04:41

本文选题：鄂尔多斯盆地 + 马家沟组　；参考：《特种油气藏》2017年04期

【摘要】：鄂尔多斯盆地下古生界气藏类型多样,发育有上组合风化壳型气藏和中组合白云岩晶间孔型气藏,具有良好的勘探前景。但是对于盆地东北部研究区的储层发育和油气运移聚集成藏规律认识较少。在前人研究基础上,结合已有勘探成果成藏规律分析,着重分析其成藏主控因素和成藏模式。研究结果表明:研究区成藏主控因素为良好的"源—储"输导体系和储层,储层发育主要为马五_1~3和马五_4~1风化壳溶孔型储层以及马五_5、马五_7、马五_9亚段白云岩晶间孔型储层;不同类型储层的发育分布控制着不同油气藏的形成。首次系统分析了该区域的成藏主控因素。该研究对于预测东北部研究区天然气聚集成藏的有利区域作进一步理论指导,为今后该区域油气勘探提供理论支撑。
[Abstract]:There are various types of Lower Paleozoic gas reservoirs in Ordos Basin and there are upper assemblage weathered crust gas reservoirs and middle assemblage dolomite intercrystalline pore gas reservoirs which have a good prospect of exploration. However, little is known about reservoir development and hydrocarbon migration and accumulation in the northeast study area of the basin. On the basis of previous studies, combined with the analysis of the law of reservoir formation of existing exploration results, the main controlling factors and the model of reservoir formation are analyzed emphatically. The results show that the main controlling factors of reservoir formation in the study area are good source-reservoir transport system and reservoir. The reservoir development is mainly composed of the weathering crust dissolved pore reservoirs of Ma Wu Shi 1 and Ma Wu 4 Xi 1, as well as Ma Wu 5, Ma Wu 7 and Ma Wu 9 submember dolomite intergranular pore reservoirs, and the development and distribution of different types of reservoirs control the formation of different oil and gas reservoirs. For the first time, the main factors of reservoir formation in this area are systematically analyzed. This study provides further theoretical guidance for predicting the favorable areas of natural gas accumulation in the northeast study area and provides theoretical support for oil and gas exploration in the region in the future.
【作者单位】：成都理工大学;中石化上海海洋油气分公司;
【基金】：国土资源部地质调查局研究课题“中国西部大型盆地碳酸盐岩成藏条件及资源潜力评价”(1212011220757)
【分类号】：P618.13

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