Pgs Geophysical as

Bengt Finnoen

Andre Stenzel

Youlin Hu

Gustav Göran Mattias Südow

Jon Falkenberg

Pressure activated linear locking mechanisms and related methods. At least some of the illustrative embodiments are systems including: a cover member defining an inner surface, an outer surface, a length, and a first locking portion; a first hollow defined in the locking portion, the first hollow extending along the length of the cover member; a locking member defining a first appendage extending along a first side, the first appendage defines a cross-section and an internal volume; said first appendage disposed within the first hollow, and when the releasable cover is exposed to atmospheric pressure, the first appendage in an inflated condition; and the first appendage is configured to transition to a deflated condition in response to a predetermined pressure greater than the initial pressure.

Pressure activated linear locking mechanisms and related methods

Pressure activated linear locking mechanisms and related methods. At least some of the illustrative embodiments are systems including: a first and second cover defining an inner and outer surface, a length, and a locking portion, respectively; a first and second hollow defined in the locking portion of the first and second cover member, respectively, the hollows extending along the length of the first and second cover members, respectively; a locking member defining first and second appendages extending along a first and second side, respectively, each appendage defines a cross-section and an internal volume; said first and second appendages disposed within the first and second hollows, respectively, and when the releasable cover is exposed to atmospheric pressure, the first and second appendages in an inflated condition; and the first and second appendages are configured to transition to a deflated condition in response to a predetermined pressure greater than the initial pressure.

A method for determining geodetic position of at least one point on a geophysical sensor streamer towed by a vessel in a body of water includes determining geodetic positions of a plurality of locations along a first geophysical sensor streamer towed at a first depth in the body of water. A lateral offset is caused between the first geophysical sensor streamer and a second geophysical sensor streamer towed at a second depth in the body of water. A distance is measured between at least two selected points along the first geophysical sensor streamer and a selected point along the second geophysical sensor streamer. A depth is measured at at least one point along the second geophysical sensor streamer. A geodetic position is determined at a selected point along the second geophysical sensor using the depth measurement, a direction of the lateral offset and the measured distances.

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Katy, TX, United States of America

Bengt Finnoen