GRATING ARRAY DESIGN FOR USE IN A SEISMIC SENSING SYSTEM

• US 20080112268A1
• Filed: 10/31/2007
• Published: 05/15/2008
• Est. Priority Date: 05/05/2006
• Status: Abandoned Application

• Current Assignee: Optoplan AS (Nokia Corporation)
• Original Assignee: Optoplan AS (Nokia Corporation)
• Inventors: Waagaard, Ole Henrik, Berg, Arne, Nakstad, Hilde, RONNEKLEIV, ERLEND
• Application Number:
  US11/932,284
• Publication Number:
  US 20080112268A1
• Time in Patent Office: Days
• US Class Current: 367/153
• CPC Class Codes: G01D 5/35383 using multiple sensor devices using multiplexing techniques
• CPC Class Codes: G01V 1/20 Arrangements of receiving elements, e.g. geophone pattern

Abstract

Seismic sensor systems and sensor station topologies, as well as corresponding cable and sensor station components, manufacturing and deployment techniques are provided. For some embodiments, networks of optical ocean bottom seismic (OBS) stations are provided, in which sensor stations are efficiently deployed in a modular fashion as series of array cable modules deployed along a multi-fiber cable.

Claims

1. An array of ocean bottom seismic sensor stations, comprising:

at least one array connection module;

a plurality of array cables extending from the array connection module, each array cable including a series of array cable modules and a multi-fiber lead cable, each array cable module including a series of seismic sensor stations suitable for deployment at or below the ocean bottom floor and connected by multi-fiber lead cables, each station housing a plurality of optical sensors, all stations within the same array cable module sharing a common sensor fiber; and

for each array cable module, a module connection node to couple a different one or more fibers of the lead cable to a sensor fiber used to interrogate a series of corresponding seismic sensor stations.