柴达木盆地昆北油田切6区E_(1+2)油藏出水规律及机理分析

Water Production Rule and Mechanism Analysis of E_(1+2) Reservoir in Qie 6 Well Block of Kunbei Oilfield,Qaidam Basin

昆北油田切6区E1+2油藏含水上升速度快严重影响了油田的高效开发。综合利用构造、储层、测井、分析化验、试采曲线等资料,对该区含水特点、出水规律及机理进行分析。研究表明:油藏实际含水、含水上升率均高于理论水平,含水率呈线性递增;油藏在不同阶段表现出不同的出水类型特征,投产初期主要为层间水、可动水和束缚水,注水开发后逐渐出现注入水和混合水;对不同类型出水原因及分布特点进行了分析,最终为油田综合治理开发方案提供了依据。

Water cut increases speedy had affected the efficient development of oilfield seriously of E1+2reservoir in Qie6well block of Kunbei Oilfield.Using a combination of structure,reservoir,logging,test data,test curve and so on,Watering characteristics,water production rule and mechanism analysis are analyzed in the area.It shows that water content,water cut increasing rate are higher than the theoretical level,water cut increasing linearly;At different stages,water types are different,In the early stage of production,water types are interlayer water,movable water and bound water,but after water injection,they are Injected water and mixed water;Analysis the reason and water distribution characteristics of different water types,Eventually it provide evidence for the oilfield development plan.