三角洲砂体构型对水驱波及特征的影响——以南图尔盖盆地Kumkol South油田J-Ⅱ层为例
发布时间：2019-06-05 21:03
【摘要】：以哈萨克斯坦南图尔盖盆地Kumkol South油田上侏罗统J-Ⅱ层为例,运用砂体精细表征、水淹层综合解释、产吸剖面统计分析和油藏数值模拟方法,研究了三角洲砂体构型特征及其非均质性,明确了砂体构型对水驱波及特征的影响。研究结果表明,三角洲砂体构型特征复杂,为泥岩隔层和泥质夹层发育的"镶嵌式"构型模式,砂体构型特征控制其水驱波及特征:三角洲各单砂体之间由于非渗透或弱渗透边界、水下分流间湾泥岩的侧向或垂向遮挡,砂体叠置结构特征复杂,注入水优先流向物性较好的水下分流河道和河口坝砂体,致使这两类砂体水淹作用强,采出程度高,水驱平面波及效果好;单砂体内部,水下分流河道和河口坝单砂体一方面由于内部发育泥质夹层,对注入水具有纵向阻挡和分流作用,砂体纵向动用程度高,水驱波及效果好,另一方面由于单砂体内渗透率级差大,水驱优势通道发育程度高,水驱波及不均匀,而侧缘席状砂为均质薄层细粒砂,物性差,水淹均匀,水驱波及效果差。
[Abstract]:Taking the Upper Jurassic J-II layer in Kumkol South Oilfield, South Turge Basin, Kazakhstan as an example, the fine characterization of sand bodies, comprehensive interpretation of water-flooded layers, statistical analysis of production and absorption profiles and reservoir numerical simulation methods are used. The configuration characteristics and heterogeneity of delta sand bodies are studied, and the influence of sand body configuration on the sweep characteristics of water drive is clarified. The results show that the configuration characteristics of the delta sand body are complex, which is a "mosaic" configuration model developed by mudstone interlayer and muddy interlayer. The characteristics of sand body configuration control its water drive sweep characteristics: due to the non-permeable or weak permeable boundary between the single sand bodies in the Delta, the lateral or vertical occlusion of mudstone in the underwater shunt bay is occlusive, and the superimposed structure characteristics of sand bodies are complex. The water diversion channel and estuary dam sand body with good priority flow of injected water lead to strong flooding effect of these two kinds of sand bodies, high degree of recovery and good sweep effect of water drive plane. In the interior of the single sand body, the underwater shunt channel and the estuary dam single sand body, on the one hand, due to the development of muddy interlayer in the interior, have the longitudinal blocking and diverting effect on the injected water, the longitudinal utilization degree of the sand body is high, and the effect of water flooding is good. On the other hand, due to the large permeability difference in single sand, the development degree of dominant channel of water drive is high, and the sweep effect of water drive is uneven, while the sheet sand on the side edge is homogeneous thin layer fine grain sand, which has poor physical properties, uniform water flooding and poor sweep effect of water drive.
【作者单位】： 中国石油勘探开发研究院;
【基金】：国家科技重大专项“全球常规油气资源潜力分析与未来战略选区”(2011ZX05028-001) 中国石油天然气集团公司重大专项(2011E-2506)
【分类号】：TE357.6
本文编号：2493821
[Abstract]:Taking the Upper Jurassic J-II layer in Kumkol South Oilfield, South Turge Basin, Kazakhstan as an example, the fine characterization of sand bodies, comprehensive interpretation of water-flooded layers, statistical analysis of production and absorption profiles and reservoir numerical simulation methods are used. The configuration characteristics and heterogeneity of delta sand bodies are studied, and the influence of sand body configuration on the sweep characteristics of water drive is clarified. The results show that the configuration characteristics of the delta sand body are complex, which is a "mosaic" configuration model developed by mudstone interlayer and muddy interlayer. The characteristics of sand body configuration control its water drive sweep characteristics: due to the non-permeable or weak permeable boundary between the single sand bodies in the Delta, the lateral or vertical occlusion of mudstone in the underwater shunt bay is occlusive, and the superimposed structure characteristics of sand bodies are complex. The water diversion channel and estuary dam sand body with good priority flow of injected water lead to strong flooding effect of these two kinds of sand bodies, high degree of recovery and good sweep effect of water drive plane. In the interior of the single sand body, the underwater shunt channel and the estuary dam single sand body, on the one hand, due to the development of muddy interlayer in the interior, have the longitudinal blocking and diverting effect on the injected water, the longitudinal utilization degree of the sand body is high, and the effect of water flooding is good. On the other hand, due to the large permeability difference in single sand, the development degree of dominant channel of water drive is high, and the sweep effect of water drive is uneven, while the sheet sand on the side edge is homogeneous thin layer fine grain sand, which has poor physical properties, uniform water flooding and poor sweep effect of water drive.
【作者单位】： 中国石油勘探开发研究院;
【基金】：国家科技重大专项“全球常规油气资源潜力分析与未来战略选区”(2011ZX05028-001) 中国石油天然气集团公司重大专项(2011E-2506)
【分类号】：TE357.6
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