正韵律厚油层水平井开发效果影响因素分析

根据胜利油区油藏资料建立了正韵律厚油层概念模型,在此基础上,利用数值模拟方法分析了水平井注采井组中注水井注水部位、夹层垂向渗透率、隔层面积与水平井段长度的匹配关系、剩余油富集面积与水平井段长度的匹配关系及剩余油富集厚度对水平井开发效果的影响,提出了有关参数并确定了其取值界限。研究结果对于正韵律厚油层挖潜,提高高含水期油藏采收率具有重要意义。

An analysis of factors to affect horizontal-well development of thick oil reservoir with positive rhythm

A concept model of thick oil reservoir with positive rhythm is built according to the reservoir data base of Shengli oilfield.Based on this model,a numerical simulation method is used to analyze several factors to affect horizontal-well development,such as injection location in a horizontal injection-production well group,vertical permeability of interbeds,a relationship between interbed area and horizontal section length,a relationship between horizontal section length and residual-oil distribution area and residual-oil thickness,and the relative paramelers and their value limits are presented.The analytical results are quite important to tapping the potential of positive rhythm reservoirs and improving oil recovery during high water-cut development.