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Processing of multichannel seismic reflection data acquired in 2013 for seismic investigations of gas hydrates in the Gulf of Mexico

Open-File Report 2016-1037

Performed in cooperation with the U.S. Department of Energy and the U.S. Department of the Interior Bureau of Ocean Energy Management
By:
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https://doi.org/10.3133/ofr20161037

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Abstract

As part of a cooperative effort among the U.S. Geological Survey (USGS), the U.S. Department of Energy, and the U.S. Department of the Interior Bureau of Ocean Energy Management, two grids of two-dimensional multichannel seismic reflection data were acquired in the Gulf of Mexico over lease blocks Green Canyon 955 and Walker Ridge 313 between April 18 and May 3, 2013. The purpose of the data acquisition was to fill knowledge gaps in an ongoing study of known gas hydrate accumulations in the area. These data were initially processed onboard the recording ship R/V Pelican for more quality control during the recording. The data were subsequently processed in detail by the U.S. Geological Survey in Denver, Colorado, in two phases. The first phase was to create a “kinematic” dataset that removed extensive noise present in the data but did not preserve relative amplitudes. The second phase was to create a true relative amplitude dataset that included noise removal and “wavelet” deconvolution that preserved the amplitude information. This report describes the processing techniques used to create both datasets.

Suggested Citation

Miller, J.J., Agena, W.F., Haines, S.S., and Hart, P.E., 2016, Processing of multichannel seismic reflection data acquired in 2013 for seismic investigations of gas hydrates in the Gulf of Mexico: U.S. Geological Survey Open-File Report 2016‒1037, 32 p., http://dx.doi.org/10.3133/ofr20161037.

ISSN: 2331-1258 (online)

Study Area

Table of Contents

  • Abstract
  • Introduction
  • Data Acquisition
  • Shipboard Processing
  • Noise Analysis and Removal
  • Kinematic Stacking and Migration
  • Wavelet Deconvolution
  • True Relative Amplitude Stacking and Migration
  • Comparison of the Processing Results
  • Publicly Available, Digital, True Relative Amplitude Data
  • References Cited
  • Appendix 1. Processing applied to navigation data
  • Appendix 2. Instructions on how to access the publicly available digitally processed data

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Processing of multichannel seismic reflection data acquired in 2013 for seismic investigations of gas hydrates in the Gulf of Mexico
Series title:
Open-File Report
Series number:
2016-1037
DOI:
10.3133/ofr20161037
Year Published:
2016
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Central Energy Resources Science Center
Description:
vi, 32 p.
Other Geospatial:
Gulf of Mexico
Online Only (Y/N):
Y
Additional Online Files (Y/N):
N