砂砾岩岩相成因分类及扇三角洲沉积特征——以准噶尔盆地西北缘克拉玛依油田五八区上乌尔禾组为例

发布时间：2018-05-19 11:39

本文选题：准噶尔盆地 + 克拉玛依油田　；参考：《新疆石油地质》2017年05期

【摘要】：准噶尔盆地西北缘克拉玛依油田五八区上二叠统上乌尔禾组为一套陆源粗粒碎屑岩,其优势储集层沉积相类型,一直存在冲积扇、冲积扇—扇三角洲以及冲积扇—近岸水下扇—扇三角洲的争议。深入研究其岩相,有助于研究区的油气勘探与开发。综合岩心、岩石薄片、分析化验、测井和录井等资料,对该套地层的沉积特征进行了深入研究,结果表明,研究区上乌尔禾组沉积相并非冲积扇及其复合沉积体系,而是一套典型的扇三角洲沉积,发育有扇面河道、泥石流、水下分支河道等9种沉积微相。明确了岩相与沉积微相的关系,虽同属砂砾岩岩相,牵引流砂砾岩岩相的物性、含油性以及试油产能较重力流砂砾岩岩相好,为区内后期油气勘探开发提供了依据。
[Abstract]:The Upper Wuerhe formation of Upper Permian in Karamay Oilfield, northwest margin of Junggar Basin, is a set of continental coarse grained clastic rocks. Alluvial fan-fan delta and alluvial fan-inshore underwater fan-fan delta controversy. The further study of its lithofacies is helpful to the exploration and development of oil and gas in the study area. The sedimentary characteristics of this set of formations have been deeply studied by synthesizing the data of core, thin slice, analysis, logging and logging. The results show that the sedimentary facies of the Upper Wuerhe formation in the study area are not alluvial fans and their composite sedimentary systems. It is a typical fan delta deposit with 9 sedimentary microfacies, such as fan channel, debris flow, underwater branch channel and so on. The relationship between lithofacies and sedimentary microfacies is clearly defined. Although they belong to the sand-gravel lithofacies, the physical properties, oil content and oil test productivity of the traction flow conglomerate facies are better than those of the gravity flow gravel rocks, which provides the basis for the late exploration and development of oil and gas in the area.
【作者单位】：中国石油新疆油田分公司勘探开发研究院;长江大学地球科学学院;中国石油长庆油田分公司第三采油厂;
【基金】：国家“十三五”重大专项(2016ZX05070001)
【分类号】：P618.13

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