高浅南区复杂小断块油藏特高含水期剩余油分布规律研究

冀东油田高浅南区复杂小断块油藏特高含水期剩余油分布规律极其复杂,为提高开发效果,通过综合研究油水井在钻井、试油及生产过程中所录取的各项资料,采用动态分析法和常规水淹层解释法分析了其剩余油分布规律,结果表明,非主力层水淹程度相对较低,剩余油相对富集;平面上剩余油主要分布在油藏构造高部位、断层夹角含油区域、物性变化带、边水油藏水淹路径之间的滞留区、井网控制程度低以及井网控制和注采系统不完善的地区;构造、沉积微相、储层非均质性、水淹路径、大孔道及物性变化带、注采井网的完善程度是控制剩余油分布的主要因素。

Remaining oil distribution regularity study of complex small fault block reservoir in extra-high water-cut period in south Gaoqian area

The remaining oil distribution regularity of complex small fault block reservoir in extra-high water-cut period is complicated,which can seriously affect the economic development effectively and bring great difficulty for reservoir exploration and development adjustment work in the next step.Through comprehensive study of oil wells in the process of drilling,oil test and production,dynamic analysis method and the conventional water flooded layer interpretation method have been used to analyze the remaining oil distribution,the results show the water flooding degree of main layers is relatively low,and the remaining oil is relatively enriched.On the plane,the remaining oil is mainly distributed in the reservoir structure parts,the angle of the fault oilbearing area,property change belt,the retention area within the edge water reservoir water path,the area of low degree of well pattern control,and area of imperfect injection-production system.The main controlling factors of the remaining oil distribution are structure,sedimentary microfacies,reservoir heterogeneity,the water path,large hole and physical property change,and the perfect degree of the injection-production well spacing.