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为了探讨认识三类油层聚合物驱开发可行性及各项相关技术,2007年3月在北东块8-182井区开展聚合物驱油先导性矿场试验。由于三类油层属三角洲内、外前缘相沉积,多发育为表内薄差层和表外储层,具有渗透率低、厚度薄、层数多和相对均质的特点,聚驱注采能力及见效特征与二类油层有很大区别。文章通过对三类油层沉积特征的认识,分析影响聚驱效果的主要因素,总结三类油层聚驱阶段取得的效果及认识。为喇嘛甸油田三类油层注聚开发提供技术储备。
In order to understand the feasibility of the development of polymer flooding in the three types of oil reservoirs and related technologies, a pilot pilot polymer flooding pilot project was carried out in Block 8-182, North East Block, in March 2007. Since the three types of oil layers belong to the delta front and the outer front facies, they are mostly developed into the thin layer and the extra-surface reservoir within the table. They have the characteristics of low permeability, thin thickness, multiple layers and relative homogeneity. Capacity and effectiveness characteristics of the second type of reservoir are very different. Based on the understanding of the sedimentary characteristics of the three types of oil reservoirs, the article analyzes the main factors that affect the effect of the poly flooding, and summarizes the achievements and understandings of the three types of oil accumulation stages. For Lamadian three types of reservoir injection development and development to provide technical reserves.