【摘要】 针对当前油田开发过程中分层注水吸水剖面测井存在的环保问题、精度较低和使用条件受限等不足,提出一种采用电磁加热检测管外流体流速的方法,通过电磁方式加热油管壁同时记录管壁温度曲线,可以得到环空水流速度。根据注水井实际情况设计了试验装置。结果表明:使用相同电磁线圈功率对油管壁进行加热可以到达的最高温度和环空水流速度反相关;电磁加热油管壁达到相同温度所需要的时间和环空水流速度正相关;电磁加热开始阶段油管壁温度快速上升过程中温度上升速度最高值和环空水流速度具有明显的负相关关系。试验验证了该方法的可靠性,为进一步设计仪器和研究新的测井方法奠定基础。更多还原

【Abstract】 Aiming at the challenges such as environmental protection issues,low accuracy and restricted application conditions encountered in the injection profile logging of layered water injection during oilfield development,a method based on electromagnetic heating was proposed to detect the flow velocity of fluids outside the tubing.By heating the tubing wall electromagnetically and simultaneously recording the temperature curve of the tubing wall,the annular water flow velocity can be determined.An experimental setup was designed based on actual conditions in water injection wells.The results indicate that the maximum temperature achievable by heating the tubing wall with the same electromagnetic coil power is inversely correlated with the annular water flow velocity.The time required for the tubing wall to reach the same temperature through electromagnetic heating is positively correlated with the annular water flow velocity.During the initial phase of electromagnetic heating,the rate of temperature rise of the tubing wall is inversely related to the annular water flow velocity.The experiments validate the reliability of this method,laying the groundwork for further instrument design and the development of new logging technique.更多还原