复杂断块油藏开发潜力分析方法——以滩海地区A油田为例  

Analysis method of development potential of complex fault block reservoir--by taking A oilfield in intertidal area as an example

作　　者：毕永斌[1] 张雪娜[1] 马晓丽[1] 刘道杰[2] 陈雷[3] 但佳敏 BI Yongbin;ZHANG Xuena;MA Xiaoli;LIU Daojie;CHEN Lei;DAN Jiamin(Exploration&Development Research Institute,Jidong Oilfield Company,PetroChina,Tangshan,Hebei 063004,China;Onshore Oilfield Operation Area,Jidong Oilfield Company,PetroChina,Tangshan,Hebei 063004,China;Drilling and Production Technology Research Institute,Jidong Oilfield Company,PetroChina,Tangshan,Hebei 063004,China)

机构地区：[1]中国石油冀东油田分公司勘探开发研究院,河北唐山063004 [2]中国石油冀东油田分公司陆上油田作业区,河北唐山063004 [3]中国石油冀东油田分公司钻采工艺研究院,河北唐山063004

出　　处：《石油地质与工程》2021年第5期56-61,共6页Petroleum Geology and Engineering

摘　　要：复杂断块油田断层多、断块小、油水关系复杂,深斜井多,动态监测资料少,开发潜力分析难度大。从单一油层采收率的理论公式入手,推导出多油藏集合体(油田)的采收率公式,明确了影响采收率的四要素与饱和度密切相关,依据饱和度变化计算其平面波及系数、层间波及系数、层内波及系数以及驱油效率,进而通过概率分析方法得出油田采收率四要素,并对比四要素单因素变化单位增长率及单因素增加可采储量极限值,量化分析了复杂断块油田增加可采储量的潜力,为实现提高采收率效益最大化提供了依据。Jidong oilfield is in the intertidal area,which is a typical complex fault block oilfield with many faults,small fault blocks,multiple oil layers,complicated oil-water relationship,many deep inclined wells,few dynamic monitoring data,and it is difficult to analyze the development potential.In this paper,from the theoretical formula of single reservoir recovery factor,the recovery formula of multi reservoir aggregate(oilfield)is deduced,and it makes clear that the four factors affecting recovery are closely related to saturation.According to the saturation change,the plane sweep coefficient,interlayer sweep coefficient,interlayer wave coefficient and oil displacement efficiency are calculated,and then the four factors of oil recovery are obtained by probability analysis method.By comparing the unit growth rate of single factor change of four factors and the limit value of recoverable reserves increased by single factor,the potential of increasing recoverable reserves in complex fault block oilfield is quantitatively analyzed,which provides a basis for maximizing the benefit of EOR.

关 键 词：滩海地区 复杂断块油藏 开发潜力 概率法 

分 类 号：TE347[石油与天然气工程—油气田开发工程]