基于DS-InSAR的季节性冻土区油田注采相关形变监测分析  

Monitoring and Analysis of Deformation Related to Injection and Production in Seasonal Permafrost Oilfield Regions based on DS-InSAR

作　　者：张倩 陈丁 郑一桐 张露 闫世勇 ZHANG Qian;CHEN Ding;ZHENG Yitong;ZHANG Lu;YAN Shiyong(Key Laboratory of Land Environment and Disaster Monitoring,Ministry of Natural Resources,Xuzhou 221116,China;College of Environment and Spatial Informatics,China University of Mining and Technology,Xuzhou 221116,China;Land Reserve Service Center,Decheng District,Dezhou City,Shandong 253011,China;Hebei Petroleum Vocational and Technical University,Chengde 067000,China;Aerospace Information Innovation Research Institute,Chinese Academy of Sciences,Beijing 100094,China)

机构地区：[1]自然资源部国土环境与灾害监测重点实验室,江苏徐州221116 [2]中国矿业大学环境与测绘学院,江苏徐州221116 [3]德州市德城区土地储备服务中心,山东德州253011 [4]河北石油职业技术大学,河北承德067000 [5]中国科学院空天信息创新研究院,北京100094

出　　处：《遥感技术与应用》2024年第6期1524-1532,共9页Remote Sensing Technology and Application

基　　金：国家重点研发计划“政府间国际科技创新合作”重点专项项目(2022YFE0102600);国家自然科学基金项目(41876226)。

摘　　要：油田注采作业易引发地下储层压力变化,易导致油田地表局部形变并诱发剪切套损,开展油田地表形变监测可以识别油田主要形变区和可能套损区,对油田作业合理规划和油田高质量可持续发展具有重要意义。合成孔径干涉测量(InSAR)技术可实现大面积、高精度的地表形变监测,但传统时序InSAR技术在地表覆盖复杂的油田区面临测量点不足且空间分布不均的问题。以大庆油田为例,针对上述问题以及季节性冻土影响,将周期模型融入DS-InSAR技术开展地表形变监测,并分析地表形变与油田注采量之间的相关性。结果表明:①油田区因注采等差异导致其地表形变分布不均匀且呈显著的非线性特征,最大沉降速率约为47 mm/a,最大抬升速率约为45 mm/a;②油田区地表形变与油田注采作业高度相关,注液作业使得地下储层压力增大,地表抬升,采油作业使得储层压力减小,造成地表沉降。该研究可为油田注采生产策略优化提供科学数据依据,进一步拓展了InSAR技术在油田区的应用。Oilfield injection and production operations can easily cause changes in underground reservoir pressure,leading to local deformation of the oilfield surface and inducing shear casing damage.,Conducting surface deformation monitoring in oil fields can identify the main deformation areas and potential casing damage areas,which is of great significance for adjusting oil field operation planning,rational exploitation of underground resources,and guiding high-quality development of oil fields.Synthetic Aperture Interferometry(InSAR)technology can achieve large-area and high-precision surface deformation monitoring,but traditional time-series InSAR technology faces the problem of insufficient measurement points and uneven spatial distribution in oil fields with complex surface coverage.Therefore,taking Daqing Oilfield as an example,based on the seasonal frozen soil characteristics in the region,the periodic model is integrated into DS-InSAR technology to carry out surface deformation monitoring,and the correlation between surface deformation and oilfield injection and production volume is analyzed.The results show that:①The surface deformation distribution in the oilfield area is uneven and exhibits significant nonlinear characteristics due to differences in injection and production,with a maximum subsidence rate of about 47 mm/a and a maximum uplift rate of about 45 mm/a.②The surface deformation of the oilfield area is highly correlated with the injection and production operations in the oilfield.Injection operations increase the pressure of the underground reservoir,causing surface uplift,while oil production operations reduce the pressure of the reservoir,resulting in surface subsidence.This study can provide scientific data basis for optimizing the injection production strategy of oil fields,further expanding the application of InSAR technology in oil field areas.

关 键 词：大庆油田 DS-InSAR 形变监测 分布式目标 

分 类 号：P225.1[天文地球—大地测量学与测量工程]