Highly-sparse seabed acquisition designs adapted for imaging geological structure and/or monitoring reservoir production

Patent metadata

Field	Value
Publication number	US-2016349394-A1
Application number	US-201615152175-A
Country	US
Kind code	A1
Filing date	May 11, 2016
Priority date	Jun 1, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

Disclosed are advantageous designs for highly-sparse seabed acquisition for imaging geological structure and/or monitoring reservoir production using sea surface reflections. The highly-sparse geometry designs may be adapted for imaging techniques using the primary and higher orders of sea surface reflection and may advantageously allow for the use of significantly fewer sensors than conventional seabed acquisition. The highly-sparse geometry designs may be relevant to 3 D imaging, as well as 4D (“time-lapse”) imaging (where the fourth dimension is time). In accordance with embodiments of the invention, geophysical sensors may be arranged on a seabed to form an array of cells. Each cell in the array may have an interior region that contains no geophysical sensors and may be sufficiently large in area such that a 500 meter diameter circle may be inscribed therein.

First claim

What is claimed is:

1 . An apparatus for acquiring seismic data, the apparatus comprising:
a plurality of geophysical sensors in an arrangement on a seabed, wherein the arrangement forms an array of cells, and wherein each cell in the array has an interior region that contains no geophysical sensors and is sufficiently large in area such that a 500 meter diameter circle may be inscribed therein.

2 . The apparatus of claim 1 , further comprising:
a p…

Assignees

• Pgs Geophysical As

Inventors

• Lecerf Didier B P
• Chemingui Nizar

Classifications

• G01V1/20 Primary

  Physics · mapped topic

• G01V1/3852 Primary

  Physics · mapped topic

• G01V2210/125

  Physics · mapped topic

• G01V1/3808

  Physics · mapped topic

• G01V1/186

  Physics · mapped topic