延长油田低渗透油藏表面活性剂降压增注体系研究  

Research on Surfactant-Based Pressure-Reducing and Injection-Enhancing System for Low-Permeability Reservoirs in Yanchang Oilfield

作　　者：魏高峰[1] Wei Gaofeng(Wuqi Oil Production Plant of Yanchang Oilfield Co.,Ltd.,Yan'an 717600)

机构地区：[1]延长油田股份有限公司吴起采油厂,陕西延安717600

出　　处：《石化技术》2024年第12期21-23,共3页Petrochemical Industry Technology

摘　　要：延长油田的低渗透油藏在开发过程中面临着显著的注水困难,导致采收率低和开发成本高。通过系统分析延长油田低渗透油藏的地质特征、流体性质及欠注原因,从地质、开发和工程三方面进行了深入探讨。从表面活性剂(包括非离子表面活性剂和石油磺酸盐表面活性剂),降压增注体系,现场应用结果显示,该体系能够显著降低注水压力,提升注入量,提高采收率,为低渗透油藏的高效开发提供了科学依据和技术支持。Low permeability reservoirs in Yanchang Oilfield encounter substantial water injection challenges,resulting in low recovery and high costs.This study systematically examines the geological characteristics,fluid properties,and under-injection causes of these reservoirs.It proposes a surfactant system combining non-ionic and petroleum sulfonate to reduce injection pressure and enhance recovery rates,offering scientific and technical support for efficient development.

关 键 词：延长油田 低渗透油藏 表面活性剂 降压增注 

分 类 号：TE3[石油与天然气工程—油气田开发工程]