Improved imaging of carbonate caves in Tarim Basin using RFWI

The imaging of carbonate caves in the Tarim Basin is challenging due to the lithological complexity of the overburden and the surrounding geology. The overburden consists of irregular igneous rocks, and salt layers, all showing high velocity contrasts, compared with the siliciclastic background rock. These irregularities significantly affect the image quality of the deeper structure, cave locations, and focusing characteristics. This study utilizes Reflection Full Waveform Inversion (RFWI) to update the velocity structure of the deep targets due to the lack of long offsets. Through RFWI, we achieved a higher resolution velocity model of the igneous layer, enhancing the imaging of deeper caves.