摘要
文南油田是个油层埋藏深、物性差、非均质严重的复杂断块油气田,注水压力大多在35M Pa以上,水井欠注严重,增注实施困难,层内自生弱酸降压增注技术针对长期困扰文南油田的高压、超高压注水问题,研制开发的一种新型复合降压增注技术。该解堵技术不仅可以适合各类油藏,同时可以解除钻井泥浆、粘土矿物等无机垢,沥青质,胶质、石蜡,聚合物胶团等有机物造成的堵塞,并可以起到深部酸化解堵和改善岩石润湿等作用。通过在文南油田高压注水井上应用,取得了好的降压增注效果。
The reservoir has some features in WenNan oilfield ,such as deep buried depth,low permeability and strong heterogeneity . Most injection pressure is above 35Mpa, it is difficult to increase injection The technique that acid is produced in formation is developed to aim at this problem It applies all kinds of reservoirs , It can remove the plug of drilling fluid,inorganic and organic dirty in deep reservoir. Application of this technique at high injection pressure well of WenNan oil field has obtained good effect.
出处
《内蒙古石油化工》
CAS
2006年第5期158-159,共2页
Inner Mongolia Petrochemical Industry
关键词
降压增注
层内自生弱酸
深部酸化
increasing injection
acid producing in formation
deep acidization
