基于线源的套后储层监测系统与影响规律研究

Research on the Monitoring System and Influence Law of Post casing Reservoir based on line source

  • 摘要: 为实现油水界面等储层参数的实时监测和井筒生产的在线精确控制,基于瞬变电磁理论,建立了基于线源的套后储层监测系统,通过数值模拟仿真,分析套后储层监测系统基本特性和不同因素对线源套后储层探测性能的影响规律。仿真结果表明,将套管作为线源可施加更大的电流,二次场信号强度与线源电流呈正相关;线源适宜发射长度在300 m左右,套管壁厚越大,电场响应幅值越高。研究结果表明,基于线源的套后储层监测系统在15 m范围内有较好的油水界面识别能力,可为油气井在线监控和稳油控水提供有效的技术手段。

     

    Abstract: In order to achieve real-time monitoring of reservoir parameters such as oil-water interface and online precise control of wellbore production, a post casing reservoir monitor system was researched. Based on transient electromagnetic theory, a post casing reservoir detection model based on line sources was established. Through numerical simulation, the basic characteristics of the post casing reservoir monitoring system and the influence of different factors on the detection performance of the post casing reservoir of line sources are analyzed. The simulation results show that using the bushing as a line source can apply a greater current, and the strength of the secondary field signal is positively correlated with the line source current; The suitable emission length of the line source is around 300 m; The larger the wall thickness of the casing, the higher the amplitude of the electric field response.The post casing reservoir monitoring system based on line source has good oil water interface recognition ability within a range of 15 m, which can provide effective technical means for online monitoring and stable oil and water control of oil and gas wells.

     

/

返回文章
返回