Patent ID: 11860327
Assignee: SERCEL
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. A non-transitory computer readable medium including computer executable instructions, wherein the instructions, when executed by a processor, implement a method for verticalizing seismic data for determining oil and gas reservoirs, the medium comprising instructions for:
recording first data with a particle motion sensor, wherein the particle motion sensor is located on a streamer, and the particle motion sensor is configured to be insensitive to a direct current;
recording second data with a gravity motion sensor, wherein the gravity motion sensor is also located on the streamer, and the gravity motion sensor is configured to be sensitive to the direct current;
selecting a cost function that associates corresponding values of the first data and the second data;
determining a misalignment angle from maximizing the cost function, wherein the misalignment angle describes a misalignment between corresponding axes of the particle motion sensor and the gravity motion sensor; and
correcting seismic data recorded by the particle motion sensor based on the misalignment angle so that the corrected seismic data is verticalized with regard to gravity.