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Seismic surveys with optical communication links

  • US 10,488,537 B2
  • Filed: 06/16/2017
  • Issued: 11/26/2019
  • Est. Priority Date: 06/30/2016
  • Status: Active Grant
First Claim
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1. A system to perform a seismic survey, comprising:

  • a seismic data acquisition unit having a transmitter window disposed in a first aperture of a lid, and having a receiver window disposed in a second aperture of the lid;

    a first seal, positioned at the transmitter window between an external surface of the seismic data acquisition unit and a first gasket, to seal against intrusion of water;

    a second seal, positioned at the receiver window between the external surface of the seismic data acquisition unit and a second gasket, to seal against the intrusion of water;

    the first gasket, different from the first seal and the second seal, positioned between the transmitter window and the first aperture to provide a clearance greater than a threshold to allow the transmitter window to deform under pressure to reduce impingement and cracking of the transmitter window;

    the second gasket, different from the first seal and the second seal, positioned between the receiver window and the second aperture to provide a clearance greater than the threshold to allow the receiver window to deform under pressure to reduce impingement and cracking of the receiver window; and

    at least one of the transmitter window and the receiver window of the seismic data acquisition unit configured to pass at least one of optical and electromagnetic communications to or from an extraction vehicle via at least one of a transmitter window and a receiver window of the extraction vehicle.

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