1-20 of 586 Search Results for

Energy from an air-gun array

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the 1984 SEG Annual Meeting, December 2–6, 1984
Paper Number: SEG-1984-0280
.... A square, a wide, and a long 6 000 inch array were studied. Each array had identical air gun comple- ment, differing only in towing geometry. The observations from these data and corresponding modeled data demon- strate the importance of the effect that air gun depths have on the observed far-field...
Proceedings Papers

Paper presented at the 2002 SEG Annual Meeting, October 6–11, 2002
Paper Number: SEG-2002-0067
... gun array on the marine biota. GI Air Guns vs. Conventional Air Guns Air guns produce an impulsive energy source as compressed air is released through a port or vent. The initial energy pulse is reflected from the sea surface to produce a peak of opposite polarity. The bubble produced by the initial...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0445
... 170 180 190 200 210 220 230 Hz smoothed over 0.33 octave bands d B r e : (u P a .m )2 s /H z Figure 5: Example vertical far-field energy spectra of a 3,300 in3 array (simulated from near-field measurements) of: air-guns with the new design (green) and standard air-guns (red) with the same mix...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 1976
Paper Number: OTC-2513-MS
... ABSTRACT Air guns as seismic energy sources have been continuously improved since their introduction in 1965. Recently air-gun arrays have been increasingly tuned for stratigraphic problems in specific survey areas. There are some fundamental aspects which should be considered in designing...
Proceedings Papers

Paper presented at the 1984 SEG Annual Meeting, December 2–6, 1984
Paper Number: SEG-1984-0267
... curtain is suggested as a means of isolating the ship from the source and the cattle. References Domenico, S.N. IY82. Acoustic wave propagation in air bubble curtains in water: Geophysics. 47, 345-372. Wednesday Morning Marine II-Air Guns A Method for Evaluating the Design of Air Guns and Air Gun Arrays W...
Proceedings Papers

Paper presented at the 1982 SEG Annual Meeting, October 17–21, 1982
Paper Number: SEG-1982-0191
... and phase mea- surement It is postulated that the noise is diffracted energy originating from irregularities at, or near, the sea bottom. This type of noise can be effectively attenuated by the use of source-and-receiver arrays. Whilst the use of air guns in spatial arrays has been mod- erately successful...
Proceedings Papers

Paper presented at the 2011 SEG Annual Meeting, September 18–23, 2011
Paper Number: SEG-2011-0077
... pulses. However, the power of the primary pulse is reduced, which also has an impact in the low frequency end. Another possible way of designing an array is to try to preserve the energy related to the bubble oscillation as well as the primary energy from the air-gun source. In deep seismic profiling...
Proceedings Papers

Paper presented at the 1984 SEG Annual Meeting, December 2–6, 1984
Paper Number: SEG-1984-0282
... of the far-field radiation patterns using measured near-field air gun signatures allows the effect of the gun distribution within the arrays to be observed. Because the subarrays are designed with the largest guns in the front and the smallest guns in the rear. some forward directionality results from gun...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 1977
Paper Number: OTC-2783-MS
... experimental measurements of the far-field signature of an air-gun array made under operational conditions. Variations in marine source signature degrade the quality of seismic data. A major function of a source control system is to minimize shot-to-shot variations. Some source variations will remain despite...
Proceedings Papers

Paper presented at the 1992 SEG Annual Meeting, October 25–29, 1992
Paper Number: SEG-1992-0712
... characterization radiated energy flux hewett Demonstration of Efficient Exploitation of Air-Gun Interaction MO H. Safar, Reading Univ.; and Vaughan B. Hewett, Geophysical Consultant, England SUMMARY In order to demonstrated that airgun interaction is not exploited efficiently in the design of compact airgun...
Proceedings Papers

Paper presented at the 1984 SEG Annual Meeting, December 2–6, 1984
Paper Number: SEG-1984-0264
... and energy to operate. This also suggests a procedure to determine the optimal air gun array volume to use under given conditions in a given area. In terms of economy, the highest SIN is desired for the least expenditure of effort and energy. By recording tow noise. shot, and residual shot noise data...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 1976
Paper Number: OTC-2514-MS
... for use in subsequent seismic data processing. INTRODUCTION Arrays of air guns are one of the most common energy sources used in Marine Seismic work. Seismic Delta commonly employs an array of seven air guns. The firing of the individual gun elements in the array is adjusted so that the composite...
Proceedings Papers

Paper presented at the 1982 SEG Annual Meeting, October 17–21, 1982
Paper Number: SEG-1982-0189
... of the amplitude spectrum and phase mea- surement It is postulated that the noise is diffracted energy originating from irregularities at, or near, the sea bottom. This type of noise can be effectively attenuated by the use of source-and-receiver arrays. Whilst the use of air guns in spatial arrays has been mod...
Proceedings Papers

Paper presented at the 1988 SEG Annual Meeting, October 30–November 3, 1988
Paper Number: SEG-1988-0079
... individual gun requirement acquisition parameter airgun array bandwidth wavelet gun interdependency Air Gun Interdependency: Pursuit of the Spectral Limits John C. Wride and Dewey R. Young, II, Exxon Production Research Co. SUMMARY Although air guns are the most popular marine- seismic energy source...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 1975
Paper Number: OTC-2227-MS
... ABSTRACT Large air-gun arrays are popular seismic energy sources. Optimum performance occurs when all guns in the array are individually programmed to fire in a fixed time sequence. A precision control and monitor system has been developed for arrays up to 30 guns. The geophysicist can program...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, December 4–6, 2007
Paper Number: IPTC-11305-MS
... versions of brute stacks. The results from the three methods appear to support one another with the conclusion being that conventional air gun sources generate recoverable energy above 5 or 6 Hz. In the area where the test was conducted, coherent energy from the air gun sources could be identified at 11...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2011
Paper Number: OTC-21131-MS
..., if not impossible to remove completely in data processing. The current use of air-gun sub-arrays are mainly designed to attenuate bubble oscillation and are ineffective in reducing source-generated interference resulting from geological complexities located above the exploration objectives. Although end-fire...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 7–9, 1984
Paper Number: OTC-4783-MS
..., The radiation of acoustic waves from an air-gun: Geophys. Prosp., v. 24, p. 756- 772. Safar, M.H., 1983, Test results of a new type of efficient small airgun array: Geophye. Prosp., v. 31, p. 334-342. Safar, M.H. and Haskey, P., 1983, On the quality control of datagun arrays: Nrst Break, v. 1, n. 11, p. 13-17...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5843413
...), emitting much of their energy above the seismic band. Hopperstad et al. (2012) and Abma and Ross (2013) proposed mitigating this impact by staggering the firing times of the air-guns comprising a source array. However, these methods affect the array directivity and can require additional processing...
Proceedings Papers

Paper presented at the 1984 SEG Annual Meeting, December 2–6, 1984
Paper Number: SEG-1984-0279
...) source radiation patterns. A moored hydrophone was used to record 3-D far-field radiation patterns from three different 6 000 inch3 air gun arrays. The hydrophone was located at a depth of about 470 m in about 1 200 m of water to permit recording of far-field signatures without water-bottom reflec- tions...

Product(s) added to cart

Close Modal