公开(公告)号：US20230034759A1

公开(公告)日：2023-02-02

申请号：US17875662

申请日：2022-07-28

Applicant: Reflection Marine Norge AS

Inventor： Håkon Aune ,  Thomas Elboth ,  Kambiz Iranpour ,  Arash Jafargandomi ,  Robert Montgomery Laws ,  Tore Andre Nilsen

IPC: G01V1/38

Abstract: Described herein is a method for acquiring data using a marine vibrator towed by a vessel, the method comprising: obtaining data comprising at least one nominal pre-plot position in a horizontal plane; monitoring a position of the marine vibrator in the and a speed of the vessel; determining an offset between the position of the marine vibrator and the nominal pre-plot position in the towing direction; based on the offset and the vessel speed, adjusting one or more survey parameters and driving the vibrator with a series of one or more sweeps so that a predetermined frequency in the sweep or a subsequent sweep is emitted when the position of the vibrator is within a maximum distance of the nominal pre-plot position.

公开(公告)号：US12242008B2

公开(公告)日：2025-03-04

申请号：US17716475

申请日：2022-04-08

Applicant: Reflection Marine Norge AS

Inventor： Robert M. Laws ,  Kambiz Iranpour

IPC: G01V1/36 ,  G01V1/38

Abstract: A method for correcting for distortions in a seismic acoustic wavefield produced by a seismic vibrator that is immersed in a fluid, the method comprising: applying a pilot signal to the vibrator such that an acoustic wavefield travels outwards from the interface between the vibrator outer surface and the fluid: using a sensor located within the fluid so as to be sensitive to a property of the wavefield in the fluid to monitor the property of the wavefield as a function of time: and using the measured property to determine a change in wet volume of a component of the vibrator as a function of time V(t) or derivatives of V(t), and using the determined wet volume V(t) or its derivatives to correct for distortions in the seismic data produced by the vibrator.