基于线源的套后储层监测系统与影响规律研究  

Post-Casing Reservoir Monitoring System and Influence Law Based on Line Sources

作　　者：郝希宁 李中 党博[2] 王宇 盛磊祥 李梦博 HAO Xining;LI Zhong;DANG Bo;WANG Yu;SHENG Leixiang;LI Mengbo(CNOOC Research Institute Co.,Ltd.,Beijing,100028,China;School of Electronic Engineering,Xi’an Shiyou University,Xi’an,Shaanxi,710065,China)

机构地区：[1]中海油研究总院有限责任公司,北京100028 [2]西安石油大学电子工程学院,陕西西安710065

出　　处：《石油钻探技术》2025年第2期175-180,共6页Petroleum Drilling Techniques

基　　金：国家重点研发计划项目“多气合采复杂结构井钻井技术及装备”(编号:2021YFC2800904);中海石油(中国)有限公司科技项目“海上油气井在线监控关键技术研究”(编号:2021-YXKJ-007)联合资助。

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,分析了套后储层监测系统的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。模拟结果表明,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。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 monitoring system based on line sources was established according to the transient electromagnetic theory.Through numerical simulation,the basic characteristics of the postcasing reservoir monitoring system and the influence law of different factors on the post-casing detection performance of the reservoirs based on line sources were analyzed.The simulation results show that using the casing 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.A larger wall thickness of the casing indicates a higher amplitude of the electric field response.The results show that the post-casing reservoir monitoring system based on line sources 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.

关 键 词：线源 储层监测 油水界面 稳油控水 智能控制 瞬变电磁 注水 套后监测 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置] TE357.6[自动化与计算机技术—控制科学与工程]