聚驱后井网滞留区剩余油挖潜方式研究  

The Pattern Research of Tapping the Potential of Remaining Oil in Stagnant Zone of Well Network after Polymer Flooding

作　　者：焦天宇[1] 

机构地区：[1]大庆油田有限责任公司第五采油厂,黑龙江大庆163000

出　　处：《中外能源》2013年第12期43-46,共4页Sino-Global Energy

基　　金：国家自然科学基金(编号:51074034)资助

摘　　要：根据试验区的动、静态数据,首先用Petrel地质建模软件建立试验区相控地质模型,然后应用CMG软件中的STARS模块进行数值模拟,在水驱阶段和聚驱阶段历史拟合的基础上,分析了聚驱后剩余油分布特征,针对聚驱后剩余油主要分布在聚驱井网分流线处的特征,选择组合轮换式周期注采方式,对分流线处的剩余油进行挖潜;设计了组合轮换式注采周期分别为4个月、6个月、8个月和10个月4种方案,对4种方案的剩余油挖潜效果进行预测。结果表明,聚驱后剩余油主要分布在聚驱井网分流线处,选择组合轮换式周期注采方式挖潜分流线处的剩余油,注采周期为6个月开采时,阶段采出程度为0.98%,净收益为1707.40万元,吨聚增油量为31.41t/t,投入与产出比为1∶2.29,通过开发指标对比和经济效果评价,确定此方案为最佳方案。Based on static and dynamic data facies is set up by Petrel geological modeling of STARTS module in CMG software.On the flooding stage ,distribution characteristics of the of experimental area ,geologic model controlled by sedimentary software ,and then numerical simulation is conducted by using foundation of history matching at water flooding remaining oil are analyzed after polymer flooding and polymer .The remain- ing oil after polymer flooding mainly distributes at the diverting streamline of well network of the polymer flooding.So,cyclic polymer injection by the way of assemblage and alternation may be carried out for tapping the potential of the remaining oil.Four programs are designed whose injection/production cycles are four,six, eight and ten months.The results indicate that：the remaining oil after the polymer flooding mainly distributes at the diverting streamline of the well network of the polymer flooding,and it can be produced through the cyclic polymer injection by the way of assemblage and alternation.When injection/production cycle is six months,interval degree of reserve recovery is 0.98 percent,net income is 17.074 million yuan,oil increment of per ton polymer is 31.41t/t,and input and output ratio is l：2.29.According to development index compari- son and commercial efficiency assessment,this program is determined as the best.

关 键 词：数值模拟 挖潜方式 井网滞留区剩余油 组合轮换式 注采周期 采出程度 

分 类 号：TE327[石油与天然气工程—油气田开发工程]