Passive Seismic Survey Project
Following the successful completion of first phase of the Passive Seismic survey in West Tripura, ONGC decided to proceed to the Phase-II. The scope of work was a detailed 3D velocity model of the study area, down to at least 6km depth. The results of the PST survey will be used as complementary information to the existing or newly acquired 2D/3D reflection seismic data, aiming to benefit the hydrocarbon exploration program in Tripura.
A seismic network composed of 348, 3-compnenent seismic stations (340 short-period and 8 broadband) were installed in an area of about 5,000 sq.km. The average interstation distance was 2.5 kmand the data recording period was 8 months.
The data acquisition stage was successfully completed on 20.02.2022, overcoming the difficulties that incurred because of the monsoons or the spread of Covid-19. The processing/interpretation work is in progress and very interesting results are expected, for a challenging area with lots of accessibility and complex geotectonic issues.