摘要
渤海Q油田储层属于高孔高渗储层,具有非均质性强、油稠以及正韵律沉积的特点。经过多年开发,底部水淹严重,易形成底部大孔道渗流层。为了改善油田开发效果,控制含水增长,分析了Q油田高渗稠油油藏的动态特征及成因,采用敏感性分析方法量化注水压力指数(PI值)在该类油田调剖选井中关键参数适用性,并优选出C05井组进行调驱堵水作业。针对C05井组目前存在的状况,从油藏动态出发、对该井组采用3种不同类型的微球颗粒调驱,封堵大孔道。作业后注水井PI值与充满度指数(FD值)大幅提高,周边油井降水增油,取得良好调驱增油效果。
The reservoir of Q oilfield in Bohai Sea was a kind of high pore and high permeability reservoir with strong heterogeneity,thick oil and positive rhythmic deposition.After many years of development,the bottom of the water flooding was serious,easy to form the bottom of the large porous seepage layer.In order to improve the development effect of oilfield and control the growth of water content,the dynamic characteristics and causes of heavy oil reservoirs with high permeability of Q oilfield were analyzed.Sensitivity analysis method was used to quantify the applicability of water injection pressure index(PI)to profile and select key parameters in this type of oilfield.In view of the existing situation of C05 well formation,three kinds of microspheres were used to regulate the well formation from reservoir dynamics to block the large orifice.After operation,the injection pressure index(PI value)and the filling index(FD value)of the injection well were increased significantly,and the surrounding wells were enhanced by precipitation.
作者
张震
付校飞
欧阳雨薇
尚丽英
李瑞雪
ZHANG Zhen;FU Xiao-fei;OUYANG Yu-wei;SHANG Li-ying;LI Rui-xue(Drilling and Production Company,CNOOC Energy Technology&Services Limited,Tianjin 300452,China;CNOOC China Limited,Tianjin Branch,Tianjin 300459,China)
出处
《精细与专用化学品》
CAS
2022年第11期21-24,共4页
Fine and Specialty Chemicals
关键词
微球调驱
大孔道
单向突进
microsphere profile control and displacement
large channel
one direaction move
