Energy Resources Program
Thursday, November 14, 2013
Outside Publication: Department of Energy-National Energy Technology Laboratory The U.S. Geological Survey (USGS) led seismic acquisition in the Gulf of Mexico from April 18 to May 3, 2013, collecting ocean-bottomseismometer (OBS) and high-resolution 2D data at lease blocks Green Canyon 955 (GC955) and Walker Ridge 313 (WR313). This collaborative effort among the U.S Department of Energy (DOE), the U.S. Bureau of Ocean Energy Management (BOEM) and the USGS was conducted to provide improved imaging and characterization of the known gas hydrate accumulations at these study sites.
Friday, January 28, 2011
USGS Publication: Scientific Investigations Report 2011–5005In this study, the connectivity equation (CE), which is a new approach to model non-Archie rocks, is used to correct for the clay effect and is compared with results using the Waxman and Smits method. The CE presented here requires no parameters other than an adjustable constant, which can be derived from the resistivity of water-saturated sediments.
Tuesday, July 20, 2010
USGS Publication: Scientific Investigations Report 2010–5138Accurate S-wave velocities for shallow sediments are important in performing a reliable elastic inversion for gas hydrate-bearing sediments and in evaluating velocity models for predicting S-wave velocities, but few S-wave velocities are measured at low effective pressure. Predicting S-wave velocities by using conventional methods based on the Biot-Gassmann theory appears to be inaccurate for laboratory-measured velocities at effective pressures less than about 4–5 megapascals (MPa).
Wednesday, March 17, 2010
USGS Publication: Scientific Investigations Report 2010–5013Large amplitude waveform features have been identified in pulse-transmission shear-wave measurements through cylinders that are long relative to the acoustic wavelength. The arrival times and amplitudes of these features do not follow the predicted behavior of well-known bar waves, but instead they appear to propagate with group velocities that increase as the waveform feature’s dominant frequency increases.
The Seismic Data Processing and Interpretation Group performs specialized 2-D and 3-D seismic reflection data processing and interpretation for the Energy Resources Program and other clients upon request using state of the art hardware and software. The Group maintains the National Energy Research Seismic Library (NERSL) and have been acquiring seismic reflection data since the mid 1970's. A primary holding of NERSL is the National Petroleum Researve-Alaska (NPRA) data archive which provides download access to over 12,000 miles of seismic line data.
This site highlights publications, data and other resources of the Seismic Data Processing and Interpretation Group.
Warren Agena Project Chief
Our group is responsible for the operation, and maintenance of the Energy Resources Program’s 2-D and 3-D seismic reflection data processing facility located in Denver, Colorado. We process newly acquired seismic data, and re-process older vintage data. These data can be either single or multi-channel 2-D seismic lines, or 3-D seismic data cubes. Also included in our responsibilities are various geophysical analyses of well logs. The end products we generate provide detailed subsurface structural and stratigraphic information which provides the foundation for geologic based hydrocarbon resource estimations, petroleum reservoir characterization, basin analysis, fluid flow modeling, geologic framework studies, characterization of petroleum systems, recognition of geologic hazards, and the analysis of hydrologic systems. [+]
For interpreting and vizualizing seismic data, we have two main software packages, one PC based and one workstation based. For relatively smaller sized interpretation/vizualization projects, we use the PC based GeoGraphix by Landmark and for larger projects requiring huge amounts of data manipulation, we use the workstation based OpenWorks by Landmark. Larson Software Technology (LST) is used to plot all of our workstation based seismic displays.
The Seismic Data Processing & Interpretation group manages a large quantity of information that we are working to make accessible through this website. At this time, two collections of data are available which include
The following data will be available on this page in the future. Contact Warren Agena if you would like additional information.
Kubat - Southeastern Utah
GLIMPCE - Great Lakes
Madison Aquifer - N. Wyoming & S. Montana
National Archive of Marine Seismic Surveys The National Archive of Marine Seismic Surveys (NAMSS) is a marine seismic reflection profile data archive.
Antarctic Seismic Data Library System for Cooperative Research (SDLS)
Page Last Modified: Thursday, June 11, 2015