井间示踪技术在下寺湾油田的应用

井间示踪测试是为了跟踪已注入的流体,向注入井中注入能够与注入的流体相溶且溶解了示踪剂的携带流体,然后再用流体躯替这个示踪剂段塞,从而标记已注入流体的运动规律,同时在生产井检测示踪剂的开采动态.通过示踪剂在生产井中的浓度突破曲线、峰值大小、个数、相应注入流体的总量等参数,反映采油井的开采动态、地层流体分布及运动规律和油藏的非均质特性.从而预先认识油藏在平面和纵向上的非均质特征,对提高油田管理水平和调整挖潜措施提供依据.本文通过对井间示踪剂的选择、参数确定及施工工艺的探讨,着重介绍了井间示踪技术在下寺湾油田的应用与实践.结果发现两注水井组油水井间连通性较好,油水井间已出现高渗透条带,需改进注水方案.

Practice of Interwell Tracer Technology in Xiasiwan Oilfield

Interwell Tracer Test tracks for injected fluid and injection wells are injected with carried fluid which dis- solve the fluid carrying tracer, then by using carried fluid replacing the part of tracer, this method can mark the rules of the moving of the fluid and can detect exploited dynamic of tracer in production well. By concentration breakthrough curves, peak value, the number, total amount of the relevant fluid injected and so on, Interwell Tracer Test can reflect exploited dynamic of oil wells, distribution and flowing law of formation fluid and heterogeneity of oil reservoirs, thus know heterogeneity of oil reservoirs in plane and vertical in advance in order to provide basis of improving level of management and adjusting measures. According to choice of interwell tracer, determination of parameters and discussion of construction technology, the paper emphatically introduces application and practice of Interwell Tracer Technology in Xiasiwan oilfield. Finally we found that connectivity between two groups of water injection well is pretty well, the interval between oil and water wells has appeared high permeable bands and needs to improve water injection program.