三角洲砂體構型對水驅波及特征的影響——以南圖爾蓋盆地Kumkol South油田J-Ⅱ層為例
發(fā)布時間：2019-06-05 21:03
【摘要】：以哈薩克斯坦南圖爾蓋盆地Kumkol South油田上侏羅統(tǒng)J-Ⅱ層為例,運用砂體精細表征、水淹層綜合解釋、產(chǎn)吸剖面統(tǒng)計分析和油藏數(shù)值模擬方法,研究了三角洲砂體構型特征及其非均質性,明確了砂體構型對水驅波及特征的影響。研究結果表明,三角洲砂體構型特征復雜,為泥巖隔層和泥質夾層發(fā)育的"鑲嵌式"構型模式,砂體構型特征控制其水驅波及特征:三角洲各單砂體之間由于非滲透或弱滲透邊界、水下分流間灣泥巖的側向或垂向遮擋,砂體疊置結構特征復雜,注入水優(yōu)先流向物性較好的水下分流河道和河口壩砂體,致使這兩類砂體水淹作用強,采出程度高,水驅平面波及效果好;單砂體內(nèi)部,水下分流河道和河口壩單砂體一方面由于內(nèi)部發(fā)育泥質夾層,對注入水具有縱向阻擋和分流作用,砂體縱向動用程度高,水驅波及效果好,另一方面由于單砂體內(nèi)滲透率級差大,水驅優(yōu)勢通道發(fā)育程度高,水驅波及不均勻,而側緣席狀砂為均質薄層細粒砂,物性差,水淹均勻,水驅波及效果差。
[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.
【作者單位】： 中國石油勘探開發(fā)研究院;
【基金】：國家科技重大專項“全球常規(guī)油氣資源潛力分析與未來戰(zhàn)略選區(qū)”(2011ZX05028-001) 中國石油天然氣集團公司重大專項(2011E-2506)
【分類號】：TE357.6
本文編號：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.
【作者單位】： 中國石油勘探開發(fā)研究院;
【基金】：國家科技重大專項“全球常規(guī)油氣資源潛力分析與未來戰(zhàn)略選區(qū)”(2011ZX05028-001) 中國石油天然氣集團公司重大專項(2011E-2506)
【分類號】：TE357.6
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