近水平井中的多相层流性质给从水平井和大斜度井中获取准确的生产测井数据造成了不小的麻烦。被圈闭的滞流体和不确定的井筒条件不但直接影响生产,也给井下测量带来了困难。传统的生产测井技术和工具是为直井没计的(一般都进行了固井与射孔作业),不适合于大斜度井,因后者常从未固井的衬管即预制滤砂管后产生层流(图1)。特别地,斜井井筒角度 The properties of multiphase laminar flow in near horizontal wells pose a significant challenge to obtaining accurate production log data from both horizontal and highly deviated wells. Trapped stagnant fluid and uncertain wellbore conditions not only directly affect the production, but also bring difficulties to downhole measurement. Traditional production logging techniques and tools are not used for vertical wells (cementing and perforation operations are generally performed) and are not suitable for high-deviated wells because the latter is often pre-filled with sandblasted liner Laminar flow tube (Figure 1). In particular, inclined wellbore angle