油井来水方向综合识别

为了准确地判断油井来水方向 ,合理部署注采井网、正确采取注采措施 ,文中利用油品分析、水矿化度分析、相关性分析和绘制井间流线图来判断来水方向 ,并将其应用到油田实际中 .结果表明 :利用理论分析方法和数值模拟方法判断来水方向 ,优点是所考虑的因素比较多 ,所得结果比较直观 ,结果的准确性依赖于所需资料的可靠性 ;利用油藏工程方法进行判断时 ,所需油田信息较少 ,实现起来比较简单 ,较适合于油田现场的应用 .由于各种判断方法具有不同的优缺点及应用条件 ,因此 ,在实际应用中 ,应综合利用各种方法 ,通过相互对比得出符合实际的结果

Comprehensive Identification of the Watered-out Direction of a Producing Well

In the development of water drive reservoirs, to correctly identify the watered out directions of producing wells is one of the important factors which should be considered in appropriately designing injection production well network, and adopting correct injection production measures. The authors introduce three kinds of methods for identifying the watered out directions, that is, theoretical analysis method, numerical simulation method, and reservoir engineering method. The advantage of the former two methods is that the identified results are visual, but the correction of the results greatly depend on the reliability degree of the geological data of the studied reservoir. The reservoir engineering method is simple and time saving one,it depends on the dynamic information of oilfield, and is suitable to applications in field. Many concrete methods are included in the reservoir engineering method, and the authors introduced seven in the paper. Each of the seven methods has itself advantage, and they should be selected according to theirsalve advantage. An example was given, the watered out directions were identified by four methods (theoretical method, numerical method, and two kinds of reservoir engineering methods), and the identified results were almost the same. The authors think that identifying the watered out directions is a complicated work, various identifying methods should be comprehensively applied to obtain correct results.