Ion Geophysical Corporation

Tgs-nopec Geophysical Company

Tgs-nopec Geophysical Corporation

Cornelis A M Faber

Lawrence Philip Behn

André W Olivier

Matthew Greco

Peter Graham Stewart

A multi-axis acceleration sensor comprises a frame, a central mass disposed within the frame, and a plurality of transducers mechanically coupled between the frame and the central mass. At least a first set of the transducers are arranged between the frame and the central mass in a manner configured to measure translational and rotational motion with respect to a first predefined axis.

Multi-axis, single mass accelerometer

A multi-axis, single mass acceleration sensor includes a three-dimensional frame, a test mass, a plurality of transducers, and a plurality of struts. The test mass may have three principal axes disposed within and spaced apart from the frame. The transducers are mechanically coupled to the frame. The struts are configured to couple to the central mass at each of the three principal axes, respectively, and to couple with respective sets of the transducers, thereby suspending the test mass within the frame. The sensor is thus responsive to translational motion in multiple independent directions and to rotational motion about multiple independent axes.

A seismic sensor comprises a central mass having three principal axes and disposed within a frame. A plurality of transducers is mechanically coupled between the frame and the central mass. The transducers are arranged in pairs, with the transducers in each pair being coupled to opposing sides of the central mass, as defined along each of the three principal axes. Electronics can be provided to combine signals of the transducers in each pair to generate output characterizing acceleration and rotation of the frame.

Multi-Axis, single mass accelerometer

A seismic sensor system includes a seismic sensor suspended in an acoustic medium, which is disposed between first and second sensor housings. The acoustic medium can be selected to preferentially transmit pressure wave energy, based on the acoustic impedance of the surrounding water column or other seismic medium. The acoustic medium can also be selected to preferentially dissipate or otherwise reduce the transmitted shear wave energy. The second housing can similarly be configured to dissipate shear wave energy, while transmitting pressure wave energy in the form of acoustic waves that propagate through the acoustic medium to the seismic sensor.

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Voorhout, Netherlands

Cornelis A M Faber