Seismic acquisition system
AssigneeWesternGeco L.L.C.
InventorMartin Laycock
Life of this patent
Estimating the term…
Abstract
Various technologies for a seismic acquisition system, which may include an acquisition central system configured to determine a desired start time for a sweep cycle in one or more vibrators and a recorder source system controller in communication with the acquisition central system. The recorder source system controller may be configured to receive the desired start time from the acquisition central system. The seismic acquisition system may further include one or more vibrator units in communication with the recorder source system controller. Each vibrator unit may be configured to start a sweep cycle in a vibrator at the desired start time.
Claims13
A vibrator unit for a seismic acquisition system, comprising:
- a vibrator;
- a control system in communication with the vibrator, wherein the control system is configured to start a sweep cycle in the vibrator at a desired start time;
- and
- a timing system in communication with the control system, wherein the timing system is configured to send a pulse to the control system to cause the control system to start the sweep cycle in the vibrator at the desired start time, wherein the timing system comprises a first real time clock synchronized with a first time synchronization system and a second real time clock synchronized with a second time synchronization system, wherein the first real time clock is synchronized with a first global positioning system and the second real time clock is synchronized with a second global positioning system.
A seismic acquisition system, comprising:
- an acquisition central system configured to determine a predetermined start time for a sweep cycle in one or more vibrators;
- a recorder source system controller in communication with the acquisition central system, wherein the recorder source system controller is configured to receive the predetermined start time from the acquisition central system;
- a recorder timing system configured to receive a firing order containing the predetermined start time from the recorder source system controller, wherein the recorder timing system comprises a first real time clock and a second real time clock, and wherein the first real time clock is synchronized with a first time synchronization system and the second real time clock is synchronized with a second time synchronization system;
- and
- a vibrator control system in communication with the recorder source system controller, wherein the recorder timing system sends a pulse, in response to receiving the firing order, to the vibrator control system a predetermined amount of time prior to the predetermined start time to cause the vibrator control system to start the sweep cycle in the vibrators at the predetermined start time.
Dependencies are inferred from the claim text.