注氚同位素示踪技术在吐哈油田开发中的应用

目前吐哈油田的开发已处于中高含水期。在化学示踪剂应用效果不明显的情况下，考虑将注氚同位素示踪技术应用于该油田。向注入井中注入氚同位素示踪剂流体，在周围采油井采样检测，获得了氚示踪剂产出浓度随时间的变化曲线;通过对曲线的分析，加深了油藏非均质性认识，并借此评价储层连通性等，从而为油水井调剖等措施提供了依据。本工作结果表明，注氚示踪剂技术是指导油田开发中后期调整挖潜的一种有效技术手段。

Application of Tritium-isotope Tracer in Production of Tuha Oilfield

At prepsent，Tuha Oilfield is in the development of mid-high water cut stage. When the effect of chemical tracer application was not obvious, the tritium isotope tracer technique was recommended. Tritium isotope was added to the injection fluids and injected to reservoirs during the process of oilfield development. Afterwards, by analyzing oil samples to monitor the concentration of tritium-isotope tracer from offset producers, the isotope production curve will be obtained. The curve is very helpful to evaluate both the heterogeneity and the connectivity of reservoirs as well as give direct evidence for profile control of both producers and injectors. The field application showed that this method was effective, and will be a direction to the adjustment of intermediary and later stage-oilfields.