厚油层内夹层分布模式及其对采收率的影响

研究了F油田R厚油层内夹层人布模式及其对采收率的影响。结果表明，R厚油层内夹层发育，可划分为3种分布模式：随机型，随机－确定型和确定, 不同模式体现了夹层在厚油层内分布的差异性。夹层阻碍重力驱替，降低波及体积系数，影响油田的采收率，但中以利用夹层采取选择性射孔，局部细分层系和封堵高含水层等措施挖掘剩余油，已在F油田稳油控水中发挥出显著效益。

Distribution Patterns of Interbeds within Thick Oil Reservoi r and Their Influence on Recovery Efficiency

The distribution patterns of the interbeds within R thick oil reservoir of F oilfield and their influence on recovery efficiency are discussed The result shows that the intercalation growth in R reservoir would be divided into 3 kinds such as stochastic,stochastic deterministic and deterministic distribution patterns Various patterns indicate the difference of distribution of interbeds in the thick reservoir The recovery efficiency of the oilfield is influenced by blocking the gravity drive and reducing the sweep efficiency resulted in the interbeds Several measures such as selecting perforation,locally sublayering,plugging of high water cut layers are implemented to produce remaining oil through the interbeds,by which obvious efficiency is brought about in stabilizing production and controlling water cut