准西地区侏罗系沉积特征与有利储层分布

发布时间：2018-03-30 02:16

本文选题：沉积特征　切入点：有利储层　出处：《东北石油大学学报》2017年02期

【摘要】：准噶尔盆地西缘地区侏罗系勘探程度较低,对砂体成因类型及有利储层分布认识不清。在地层精细划分的基础上,根据精细剥蚀量计算结果,恢复侏罗系沉积期古地貌;结合残留地层的沉积特征,研究侏罗系沉积模式,还原重要沉积期的岩相古地理;根据研究区物性统计与物性下限分析结果,明确有利储层砂体成因类型,预测有利储层的展布。结果表明,车排子地区侏罗系发育扇三角洲和辫状河三角洲两种沉积相类型,其中车排子凸起东翼陡坡带发育受限型扇三角洲,四棵树凹陷南部陡坡带发育扇三角洲,四棵树凹陷北部缓坡带发育辫状河三角洲。其中辫状河三角洲前缘砂体储集物性最好,为有效储层,是未来重点勘探目标。
[Abstract]:The degree of Jurassic exploration in the western margin of Junggar Basin is relatively low, and the genetic types of sand bodies and the distribution of favorable reservoirs are not clear. On the basis of fine stratigraphic division, the paleogeomorphology of Jurassic sedimentary period can be restored according to the calculated results of fine denudation. Combined with the sedimentary characteristics of residual strata, the sedimentary model of Jurassic system and lithofacies and paleogeography of important sedimentary period are studied, and according to the results of physical property statistics and lower limit analysis of physical properties in the study area, the genetic types of favorable reservoir sandbodies are determined. The results show that there are two sedimentary facies types of Jurassic fan delta and braided river delta in Chepaizi area, in which the restricted fan delta is developed in the steepslope zone of the eastern wing of the Chepaizi uplift. Fan delta is developed in the southern steep slope zone of Sikeshu sag, and braided river delta is developed in the northern slope zone of Sikeshu sag. The reservoir property of sand body in the front edge of braided river delta is the best, which is an effective reservoir and is the key exploration target in the future.
【作者单位】：中国石化胜利油田分公司勘探开发研究院西部分院;
【基金】：国家科技重大专项(2011ZX05002-002) 中国石油化工股份有限公司项目(P13021)
【分类号】：P618.13

【相似文献】