氮气泡沫液洗井增注技术研究与应用

The Research and Application of the Nitrogen Foam Fluid Well-washing Increase Injection Water Technology

由于存在成本较高和油套管容易产生腐蚀等问题,传统酸压增注措施得不到规模化应用。针对此问题,在塔里木油田应用一种新型洗井增注技术——氮气泡沫液洗井增注技术。该技术用于油田生产后效果显著,地层漏失得以降低,注水井近井地带污染得到有效控制,吸水能力得以提高,注水井洗井周期大幅延长,可大规模推广应用。

The traditional acid fracturing stimulation due to the higher cost and oil casing prone to corrosion problems,conventional hydraulic flushing due to augmented injection effect is poor and the effective period is short and other issues,so it can not enlarge scale application.In order to solve the problem,this paper introduces a new type of washing well injection increase technology-nitrogen foam fluid well-washing technology.The technology in Tarim Lunnan Oilfield application shows that,it can significantly reduce the leakage of formation effectively,relieve water injection wells near wellbore area pollution,improve water absorbing capacity,greatly extend the water flooding well washing cycle and reduce operating costs,and it has a good application prospect.