摘要
储层大孔道是影响聚驱效果的主要因素之一,为了提高特高含水期聚驱效果,以孤东油田七区中为研究对象,在窜聚特征分析的基础上,应用油藏地质、油藏工程和数值模拟等分析方法,研究了大孔道的形成因素及对聚驱效果的影响,并对大孔道进行了定量描述和窜聚速度的计算,提出了孔道的分级方法,以此为依据对窜聚井进行了分类治理。矿场治理结果表明,该方法具有较好的适应性,提高了聚合物利用率,扩大了聚合物驱的波及体积,提高了区块开发效果,这对同类型聚合物驱油田的治理,有一定的借鉴作用。
Highly permeable channels in formation are one of major factors having an effect on polymer flooding efficiency.To enhance the polymer flooding efficiency in the phase of super high water cut,taking Seven Block Central,Gudong Oil Field for example,reservoir geology,reservoir engineering,numerical simulation and so on were applied to study forming factors of highly permeable channels and its impact on polymer flooding efficiency on the basis of analysis of polymer breakthrough characteristics.Meanwhile,highly permeable channels were quantitively characterized,the rate of polymer breakthrough in formation was calculated and the method of classification of highly permeable channels was put forward.According to the aforementioned,sorted abatements related to polymer breakthrough wells were carried out respectively.The field application indicates this method takes on a good adaptability,improve the percentage of polymer to drain oil,enlarge the conformance factor and enhance the development cost-efficiency of the Block at large.Furthermore,it will lend itself to the similar polymer flooding oil field.
出处
《新疆石油天然气》
CAS
2005年第2期59-61,共3页
Xinjiang Oil & Gas
关键词
孤东油田
聚合物驱油
窜聚特征
孔道描述
分类治理
Gudong Oil Field,Polymer Flooding,Polymer Breakthrough Characteristics,Channel Characterization,sorted abatement.
