水平井水窜类型识别方法及适应性分析

Identifying Method of the Water Channeling Types of a Horizontal Well and Its Adaptability Analysis

水平井技术在新区开发和老区挖潜中的利用率越来越高,水平井的调剖堵水问题也越来越受到关注,搞清楚水平井的非正常出水的原因和类型,将会对其进行有针对性的调剖堵水提供重要依据。根据水平井生产动态数据,采用水油比和水油比导数与生产时间的双对数曲线特征来识别水平井水窜的类型,并且分析了不同因素对该曲线特征的影响。经过实践验证,此识别方法快速有效,可为水平井发生窜通时实施调剖堵水措施提供指导。

In view of the more and more horizontal wells drilled for the development of oilfields and the searching potentials of old oilfields and the more and more attention paid for the profile control and water shut-off of horizontal wells,making clear the reasons and types of abnormal water breakthrough of horizontal wells will provide important bases for purposeful profile control.Water channeling types of horizontal wells are identified based on the features of the double logarithm curves of WOR and WOR derivative to time and based on dynamic production data of horizontal wells and the effect of different factors on the features of the curves are analyzed.Field application proves that the method is rapid,effective and can provide a guide for the implementation of profile control and water shut-off when water channeling occurs in a horizontal well.