萨尔图油田北三西区检查井水淹层分析

萨尔图油田现处于特高含水开发阶段,层间、层内、平面矛盾突出,油层水洗情况复杂,为此需对北三西区检查井进行深入研究,以了解研究区储层物性变化情况。通过对检查井的水洗特征、水洗规律的研究,得出剩余油分布的规律及控制因素;北三西区表内储层物性好,其具有较高的水洗强度,驱油效率较高,表外储层反之;夹层多、储层内部结构复杂的储层段水淹程度低,而区域上连通性及孔渗条件好的单层,水洗严重。

Analysis of the inspection well water flooded layer in Beisanxi area of Saertu oilfield

Saertu oil field is on the high water development stage with exploitation degree deepen and oil water level rises rapidly,its contradictions of Interlayer,inner,plane is highlight.Due to the complex situation of reservoir washing,this paper puts forward a deep study of the inspection Wells to see the variation status of Reservoir physical properties.Through study the washing features and disciplines of the inspection Wells,It intend to realize factors which influence governing factor and distribution regularity of remaining oil,it also puts forward adjustable injection profile as well as making full use of interlayer and so on.In general,usable reservoirs have high washing strength and oil displacement efficiency,unworkable reservoirs is on the other hand.Reservoir with much more Sandwich and complex internal structure have Low degree of water flooding,while single-layer with low degree of connectivity and good porosity are Washing badly.In sum,inspection well deploy is made to provide ideas for understanding residual oil distribution.