Ocean bottom seismometer package
DCFirst Claim
1. An ocean bottom seismic data acquisition unit to record seismic data while on an ocean bottom, comprising:
- at least one geophone disposed within the ocean bottom seismic data acquisition unit to continuously monitor for seismic signals while on the ocean bottom;
at least one clock disposed within the ocean bottom seismic data acquisition unit;
at least one power source disposed within the ocean bottom seismic data acquisition unit;
at least one memory disposed within the ocean bottom seismic data acquisition unit to store seismic data while on the ocean bottom;
at least one accelerometer disposed within the ocean bottom seismic data acquisition unit;
the ocean bottom seismic data acquisition unit having negative buoyancy; and
the ocean bottom seismic data acquisition unit having a width that is greater than a height of the ocean bottom seismic data acquisition unit;
wherein the seismic data acquisition unit does not receive or transmit an external control communication while on the ocean bottom.
6 Assignments
Litigations
1 Petition
Reexamination
Accused Products
Abstract
A marine seismic exploration method and system comprised of continuous recording, self-contained ocean bottom pods characterized by low profile casings. An external bumper is provided to promote ocean bottom coupling and prevent fishing net entrapment. Pods are tethered together with flexible, non-rigid, non-conducting cable used to control pod deployment. Pods are deployed and retrieved from a boat deck configured to have a storage system and a handling system to attach pods to cable on-the-fly. The storage system is a juke box configuration of slots wherein individual pods are randomly stored in the slots to permit data extraction, charging, testing and synchronizing without opening the pods. A pod may include an inertial navigation system to determine ocean floor location and a rubidium clock for timing. The system includes mathematical gimballing. The cable may include shear couplings designed to automatically shear apart if a certain level of cable tension is reached.
217 Citations
20 Claims
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1. An ocean bottom seismic data acquisition unit to record seismic data while on an ocean bottom, comprising:
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at least one geophone disposed within the ocean bottom seismic data acquisition unit to continuously monitor for seismic signals while on the ocean bottom; at least one clock disposed within the ocean bottom seismic data acquisition unit; at least one power source disposed within the ocean bottom seismic data acquisition unit; at least one memory disposed within the ocean bottom seismic data acquisition unit to store seismic data while on the ocean bottom; at least one accelerometer disposed within the ocean bottom seismic data acquisition unit; the ocean bottom seismic data acquisition unit having negative buoyancy; and the ocean bottom seismic data acquisition unit having a width that is greater than a height of the ocean bottom seismic data acquisition unit; wherein the seismic data acquisition unit does not receive or transmit an external control communication while on the ocean bottom. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of acquiring seismic data using an ocean bottom seismic data acquisition unit on an ocean bottom, comprising:
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continuously monitoring for seismic signals via at least one geophone disposed within the ocean bottom seismic data acquisition unit while on the ocean bottom and without receiving and without transmitting an external control communication while on the ocean bottom; recording seismic data on at least one memory disposed within the ocean bottom seismic data acquisition unit while on the ocean bottom; the ocean bottom seismic data acquisition unit having negative buoyancy; the ocean bottom seismic data acquisition unit having a width that is greater than a height of the seismic data acquisition unit; and the ocean bottom seismic data acquisition unit having at least one clock disposed within the ocean bottom seismic data acquisition, at least one accelerometer disposed within the ocean bottom seismic data acquisition unit, and at least one power source disposed within the ocean bottom seismic data acquisition unit. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification