摘要
东辛油田营11区块具有高压低渗的特征,注水压力高,注入困难,常规土酸酸化对欠注层的改造效果不理想。通过深入分析该区块岩性特征及储层污染的主要原因,在广泛调研国内外先进油层改造工艺技术基础上,将多元复合酸酸化工艺技术在该区块进行了应用,取得了明显的降压增注效果,为同类油藏欠注层的改造提供了依据和指导。
The block Ying-11 in Dongxin oil--field is a typical high pressure and low permeability reservoir. The use of the routine mud acid for increasing injection was failed in that block. The reason why high pressure and low permeability reservoir can be polluted was analyzed. Aimed at these problems, polyatomic - recombination acid technology was used in that block. Comparatively fine result of decreasing injection pressure and increasing water injected was obtained.
出处
《内蒙古石油化工》
CAS
2009年第10期146-146,148,共2页
Inner Mongolia Petrochemical Industry
关键词
低渗透
复合酸
增注
Low permeability
Polyatomic-recombination acid
increase injection
