井间示踪剂测试在缝洞型油藏的应用

对于缝洞型碳酸盐岩油藏,缝洞组合方式多样且缝洞连通关系复杂,很难通过测井、试井以及地质建模等方法进行井间的储层预测。为此提出了井间示踪剂测试与油藏数值模拟相结合的评价方法。该方法通过对示踪剂测试曲线进行分析和数值模拟拟合可以实现对油藏油水井间连通关系的认识。在分析井间示踪剂测试的基本理论和数值模拟方法的基础上,进行了实例分析。结果表明:运用该方法能较为准确地评价流体的波及状况、注水受效情况;认识注入流体流向、流速信息;确定裂缝的发育状况以及区块的剩余油分布。对于进一步认识缝洞型油藏的非均质性特征以及地层缝洞连通关系起到了积极的指导作用。

Application of Interwell Tracer Testing in Fracture-cavity Reservoirs

Fracture cavity carbonate rock reservoirs had many types of fracture cavity array mode and complex connectivity. It was very difficult to predict the reservoirs through well log, well testing and geology modeling. The method combined tracer testing technique with reservoir numerical simulation technique was used. This method recognized the connectivity of oil well and water well through matching production, method of inter-well tracer testing technology was proposed by taking example analyses. Result shows that the method can accurately estimate the affect condition of liquid and the effect of injected liquid, development condition of fracture, the remaining oil distribution of block. It provides a guidance for further recognizing the reservoir heterogeneity features and the connectivity of fracture cavity.