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Keywords: free gas
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Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427241
... In this paper, two kinds of non-de-wavelet inversion methods are used to identify hydrate and free gas in the study area. Frequency-dependent AVO inversion and density gradient inversion are carried out using amplitude seismic data. The p-wave dispersion gradient and density gradient...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216753
... Time: 1:50 PM Presentation Time: 1:50 PM Location: Poster Station 4 Presentation Type: Poster frequency waveform analysis bsr ghsz identification reservoir characterization free gas seg international exposition seismic data skewness interpretation annual meeting attenuation...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-1104
... Summary An analysis of amplitude variation with offset (AVO) observations is applied in hydrate-bearing sands, free-gas- charged sands, and hydrate-over-gas sands. The elastic model parameters (Vp, Vs, and density) are obtained from well log measurements and a rock physics model. The study...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-1230
...- wave velocities in mudrocks accounting for silica (quartz), porosity, and free gas. Using sonic and shear-sonic logs we apply the proposed method to estimate silica, porosity, and free gas depth profiles in the Woodford Shale of the Mcneff 2-28 well, Grady County, Anadarko Basin, Oklahoma. Our modeling...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-0784
.... expansion free gas original study seismic amplitude instantaneous amplitude blowdown time slice dataset reservoir characterization upstream oil & gas main menu time-lapse observation instantaneous amplitude slice pennington teal south difference slice hydrocarbon oil-water contact...
Proceedings Papers

Paper presented at the 2010 SEG Annual Meeting, October 17–22, 2010
Paper Number: SEG-2010-1452
... stability zone hydrate amplitude anomaly seismic data sediment pore space reflector denver 2010 gas hydrate gas hydrate stability zone deposit free gas interpretation Seismic interpretation of gas hydrate based on physical properties of sediments Zijian Zhang*1,2 and De-hua Han2 1AOA...
Proceedings Papers

Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-3695
... ABSTRACT Marine seismic reflection data collected from offshore southwestern Taiwan show that prominent seismic bottom simulating reflectors (BSRs) are presented that indicate the existence of gas hydrate in the seafloor sediment with free gas zone underneath. It is of great interest...
Proceedings Papers

Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-2622
...Seismic indicators of gas hydrates and associated free gas Sanjeev Rajput*, Commonwealth Scientific and Industrial Research Organization, Mrinal K. Sen, Institute for Geophysics, University of Texas at Austin, and Satinder Chopra, Arcis Corporation Summary Gas hydrates are found worldwide and many...
Proceedings Papers

Paper presented at the 2008 SEG Annual Meeting, November 9–14, 2008
Paper Number: SEG-2008-0508
... and as a potential energy source. In this paper, we present the results of 2D travel time inversion on multichannel seismic data of Kerala-Konkan (KK) basin, western offshore India for gas hydrates investigations. The lateral and vertical extent of gas hydrate and free gas zone within the sedimentary cover...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-1913
..., estimates of the volume of gas existing in gas hydrates and as free gas on Blake Ridge range from about 70 trillion cubic meters over an area of 26,000 km (Dickens et al., 1997) to about 80 trillion cubic meters for a larger area of 100,000 km (Holbrook et al.,1996). Discrepancies between some estimates...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-0498
... characterization upstream oil & gas mackenzie delta free gas gas hydrate wavefield original well log arcis corporation seismic data Mackenzie Delta seismic case study a reprocessing perspective Satinder Chopra Vladimir Alexeev , Joanne Lanteigne+, Yong Xu+ Arcis Corporation, Calgary ; + Paradigm...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-1542
... ABSTRACT A seismic experiment was canied out in summer 2002 at the Hydrate Ridge to map the gas hydrate. Seismic wave velocities vary in the presence of gas hydrate and free gas in the sediments. Accuracy in the estimation of distribution and saturation of gas hydrates and free gas depends...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-1787
... 2005 synthetic data double bsr reflector gas hydrate free gas bsr physical property hydrate strength sediment brine sand layer Amplitude strength of simulating reflectors by full waveform modelling Sanjeev Rajput*, P. P. Rao and N. K. Thakur, National Geophysical Research Institute...
Proceedings Papers

Paper presented at the 2004 SEG Annual Meeting, October 10–15, 2004
Paper Number: SEG-2004-0346
... that sonic attenuation from both monopole and dipole waveforms should give new insight to characterize gas hydrate bearing sediments and gas-saturated sediments. free gas upstream oil & gas attenuation measurement compressional waveform guerin well logging reservoir characterization dipole...
Proceedings Papers

Paper presented at the 2004 SEG Annual Meeting, October 10–15, 2004
Paper Number: SEG-2004-0460
... hydrate concentration and free gas saturation at the BSR. Results indicate that it is possible to detect free gas and to quantify free gas at low saturations after careful data processing. The contribution of gas hydrates to the observed impedance contrast is very small, especially at bulk concentrations...
Proceedings Papers

Paper presented at the 2003 SEG Annual Meeting, October 26–31, 2003
Paper Number: SEG-2003-0008
... of 3 m and 6 m. Combination of these types of seismic data including deep- tow seismics with well log data to be obtained in 2004 is expected as an effective geophysical indicator for exploration of methane hydrate and free gas in this area. Introduction Many seismic surveys have been done...
Proceedings Papers

Paper presented at the 2003 SEG Annual Meeting, October 26–31, 2003
Paper Number: SEG-2003-0258
... content avo response reservoir characterization well log velocity reflectivity canada seismic data exploration interval velocity reflectivity upstream oil & gas free gas hydrate concentration hydrate hydrate exploration gas hydrate exploration Possibility of AVO applications in gas...
Proceedings Papers

Paper presented at the 2000 SEG Annual Meeting, August 6–11, 2000
Paper Number: SEG-2000-1568
... Summary We propose a method to estimate the gas-hydrate concentration and free-gas saturation in marine sediments from log and seismic data. The method is based on a model that relates the concentrations to the P-wave velocity. We consider two different theoretical approaches: 1) a Biot-type...
Proceedings Papers

Paper presented at the 1998 SEG Annual Meeting, September 13–18, 1998
Paper Number: SEG-1998-1146
... ABSTRACT No preview is available for this paper. reflection inversion bsr travel time p-wave velocity stoffa reservoir characterization hydrate elastic property free gas seismic data amplitude carolina trough mapping sediment geophy upstream oil & gas reflector gas...
Proceedings Papers

Paper presented at the 1998 SEG Annual Meeting, September 13–18, 1998
Paper Number: SEG-1998-0566
... ABSTRACT No preview is available for this paper. blake ridge moduli upstream oil & gas gas hydrate reservoir characterization bsr seismic data free gas gas saturation porosity equation elastic moduli hydrate saturation interval velocity porosity profile free gas...

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