Abstract：We use multiple SAR satellite data, and adopt the time-series InSAR technique to restore the ground deformation time series of the Sebei gas field since its formal development in 1996. The results show that the surface of Sebei No.1 gas field remained stable from 1996 to 2003, experienced significant uplift from 2003 to 2005, and rapidly subsided from 2005 to 2018. We use the uniform elastic half-space model to invert the relationship between natural gas exploitation and ground deformation in the Sebei No.1 gas field from 2015 to 2018. It’s shown that the amount of surface subsidence in the Sebei gas field increased with the increase of natural gas exploitation volume, while the exploitation depth increased first and then stabilized at 2 300 m after 2017. Furthermore, we also calculate the volume change of underground natural gas reservoir inverted by InSAR under standard conditions. The results show that the difference between the InSAR inversion results and actual statistical data is very small, verifying the reliability of InSAR monitoring and inversion results. The results of this study can provide important ground deformation data for the safety production of Sebei gas field and the healthy operation of surrounding infrastructure.
XIE Yaqi,LIANG Weitao,DING Wu. Ground Deformation Monitoring and Exploitation Characteristics Inversion of the Sebei Gas Field Based on InSAR[J]. jgg, 2023, 43(11): 1101-1106.
