Research vessels of Sevmorneftegeophysica JSC (SMNG, a subsidiary of Rosgeo) – Academic Nemchinov and Academic Primakov, have successfully performed 3D seismic explorations under the Contract with Gazprom Geologorazvedka LLC on the North Kharasaveisky licensed site in the south-eastern part of the Kara Sea shelf.
As the sea depth within the surveyed area varies from 145 m in the North-West and to 12 m in the East by the coast of Yamal peninsula, the seismic exploration was performed in two phases. First, the Academic Nemchinov research vessel surveyed the area of 986 sq. km in the shallows, then the Academic Primakov research vessel performed the works in deep waters of the licensed site in the area of 889 sq.km.
Through the careful preparation, configuration and testing of equipment during the mobilization, as well as efficient operation of the crew, the Academic Nemchinov research vessel achieved the performance of 21.7 sq.km per day during the seismic exploration in the shallows.
The professionalism of the Academic Nemchinov vessel crew virtually excluded vessel idleness for technical reasons during the surveys in deep waters: it was only 7 hours for 39 days – less than 1% of the total running time.
Upon completion of the contract field operations on the Academic Primakov vessel, the research and methodical works were performed to implement innovative state-of-the-art technologies of 3D full-wave marine seismic surveys. The operation of navigation and geophysical facilities Q-Marine with sloped towed streamers and wave sources was tested, which helped to improve seismic data resolution and to obtain more qualitative results in processing field data.
