文留油田剩余油分布研究及挖潜技术

利用大量的生产、测井及监测等资料对文留油田高含水后期剩余油分布进行了研究,指出剩余油主要富集于层内低渗透段、层间状况差异大且物性差的层;平面上动态注采对应差的部位、受井间渗流特征及大孔道等影响的滞留区、绕流区、起伏较大的微构造部位;低电阻储层的重新解释与综合判定,同时也探讨了老油田剩余油挖潜的主要方法,它包括井网重组、定向井、侧钻井、注水井更新、注水井调驱、间歇注水、水平井技术等工艺在文留油田的应用及效果,对矿场应用具有借鉴意义。

Remained Oil Distribution and Its Potential Exploitation Technology in Wenliu Oilfield

Remaining oil distribution in high water cut stage of Wenliu oilfield is studied using a number of data of production,log and testing.It points out the remaining oil is enriched in interlayer low-permeability section;formations with large difference between interlamination and poor physical property;the position of bad dynamic injection-production correlation in plane,lag area influenced by inter well percolating properties and macroscopic high position,low resistivity reservoirs are reinterpreted and discovered.The main methods of tapping the potential of remaining oil in old oilfield are discussed.It includes well pattern recombination,technology of target directional well,sidetracking,updating water injector,adjusting displacement by profile control of water injection wells,the horizontal well drilling technology,which have direct significance in field application.