Deploying sensor arrays

Abstract

There is described an apparatus and method for deploying a sensor array comprising a plurality of sensors (5) joined together by connection cables (6) in one or more chains, and connected to an input / output device (8). An input / output connection unit (7, 15) is provided on a carrier (10), and the sensors are held on or in deployment devices (14a - 14e) mounted to the carrier with their connection cables (6) connected to the input / output connection unit (7, 15). The input / output device (8) may also be mounted to the carrier, and connected to the connection unit (7, 15). The carrier (10), sensors, and input / output device (8) may be delivered as a single package to the area where the sensor array is to be deployed. The sensors are then moved from the carrier to their final positions.; The deployment devices (14a - 14e) may be detached from the carrier and moved sequentially to the sensor positions, and a sensor may be removed from the deployment device at each sensor position.

Description

technical field [0001] The present invention relates to methods of deploying sensor arrays, and in particular to methods and apparatus for deploying sensor arrays in difficult-to-access environments. More specifically, the present invention finds utility in deploying arrays of undersea seismic sensors. However, it should be understood that the method and apparatus are applicable to all types of sensor array installations. Background technique [0002] Submarine seismic sensor arrays are widely used in the exploration and monitoring of oil reserves under the seabed. In these seismic monitoring techniques, arrays of seismometers and / or hydrophones are deployed as sensor packages on the seafloor to detect reflected seismic waves, and the results are analyzed to provide information on the nature and nature of the geological structures beneath the seafloor. Information about the status. [0003] An array of seismic sensors typically consists of a plurality of sensor lines, eac...

AI Technical Summary

Problems solved by technology

[0005] This conventional method of deploying seismic sensor arrays not only requires precise laying of the seismic and backbone cables to ensure they are close enough for bonding to occur, but also has the added disadvantage that the "wet" bonding process is time consuming and slower than has been done. "Dry" (i.e. performed in air rather than water) splices provide less reliable splices

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