公开(公告)号：US10928535B2

公开(公告)日：2021-02-23

申请号：US15571029

申请日：2016-05-02

Applicant: Reflection Marine Norge AS

Inventor： David Fraser Halliday ,  Jon-Fredrik Hopperstad ,  Robert Montgomery Laws

IPC: G01V1/38

Abstract: Marine seismic surveys, including ocean bottom surveys, utilizing marine vibrator arrays that are capable of being driven in anti-phase to produce a directional source gradient. Marine seismic surveys may include activating the vibrator array to emit a plurality of radiation patterns with at least a first radiation pattern that has a first notch at a take-off angle that is not close to vertical. Some marine seismic surveys includes emitting directive wavefields from two or more simultaneous seismic source arrays, where the two or more seismic source arrays have a phase that changes from shot-to-shot to allow simultaneous source separation of the directive wavefields.

公开(公告)号：US10712464B2

公开(公告)日：2020-07-14

申请号：US15110136

申请日：2015-01-09

Applicant: REFLECTION MARINE NORGE AS

Inventor： Rik Wemmenhove ,  Nicolas Barral ,  Martin Howlid ,  Emmanuel Coste

IPC: G01V1/38

Abstract: Various implementations described herein are directed to a method of acquiring seismic data. The method may include towing an array of marine seismic streamers coupled to a vessel. The array comprises a plurality of lead-in cables and streamers, and the plurality of lead-in cables comprises an innermost lead-in cable and an outermost lead-in cable with respect to a center line of the vessel. The method may also include towing a plurality of source cables and one or more seismic sources such that the one or more seismic sources are positioned between the innermost lead-in cable and the outermost lead-in cable.