特低渗长3油藏合理注采比研究及开发对策

Study on Extra-low permeability Chang 3 reservoir rational injection and production ratio and development countermeasures

摘要: A油田长3油藏为湖泊三角洲形成的岩性油藏,低渗油藏特征明显,开发6年来,通过合理注采比研究,开展早期微相识别、精细注水、措施挖潜等技术措施,实现了油藏的成功开发,取得了良好效果:三项开发指标持续降低,水驱状况好,最终采收率高。

Abstract: Chang 3 reservoir is lithology reservoir formed by lake delta with obvious low permeability.After six years development of the area,the research on rational injection and pro-duction ratio has been made,and the technological measures as early micro facies identification,fine injection,measure for tapping potential has been carried out,which proved the successful development of the reservoir and achieved good result as:three development index continues to drop,good the water flooding and high ultimate recovery.