大庆油田致密油水平井产能影响因素分析及预测方法

Analysis and prediction of factors affecting productivity of tight oil horizontal wells in Daqing Oilfield

随着钻井工艺的进步,水平井已成为油田增储上产的重要井型。在水平井解释评价方面已基本形成了较完整的技术体系,但在水平井产能预测方面尚缺乏有效手段。基于直井的产能预测原理,建立了水平井的产能预测方法,并对产能影响因素进行分析,简化了预测参数,同时结合大庆油田致密油水平井实际试油情况,建立了满足大庆油田多个区块的联合产能预测图板。该方法在实际应用中取得了较好的效果,满足了生产的需要。

With the progress of drilling technology,horizontal well has become an important well type for increasing reserve and output.A relatively complete technical system has been basically formed in horizontal well interpretation and evaluation,but there is still a lack of effective means to predict horizontal well productivity.Based on the principle of productivity prediction of vertical wells,the productivity prediction method of horizontal wells is established.The influencing factors of productivity are analyzed and the prediction parameters are simplified.At the same time,combined with the actual production test of tight oil horizontal wells in Daqing Oilfield,the joint productivity prediction chart for several blocks in Daqing Oilfield is established.The method has achieved good results in application and satisfied the needs of production.