Results 251 to 260 of about 193,810 (301)
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54th EAEG Meeting, 1992
In this paper we propose a novel method of acquiring marine seismic data in which screw noise is used as the seismic source. This approach has many potential advantages and might be suitable for seismic acquisition beneath the ice-cap in polar regions .
Kevin Davies +3 more
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In this paper we propose a novel method of acquiring marine seismic data in which screw noise is used as the seismic source. This approach has many potential advantages and might be suitable for seismic acquisition beneath the ice-cap in polar regions .
Kevin Davies +3 more
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Offshore Technology Conference, 1969
PREFACE This paper is a condensation of a talk presented at the 38th Annual Meeting of the Society of Exploration Geophysicists held in Denver, Colorado, September 29-0ctober 3, 1968. The complete paper is published in handbook form, available from United Geophysical Corporation, Pasadena, California.
F.S. Kramer, R.A. Peterson, W.C. Walter
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PREFACE This paper is a condensation of a talk presented at the 38th Annual Meeting of the Society of Exploration Geophysicists held in Denver, Colorado, September 29-0ctober 3, 1968. The complete paper is published in handbook form, available from United Geophysical Corporation, Pasadena, California.
F.S. Kramer, R.A. Peterson, W.C. Walter
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The Journal of the Acoustical Society of America, 1990
The improved seismic vibration apparatus (10) includes variable length control means (44) located so as to effectively and efficiently position the vibrator (36) relative to the base plate (30) and apparatus (40) to isolate the vibrator (36) from the control system (44) and from the vehicle frame (12) so that effective seismic vibration is imparted ...
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The improved seismic vibration apparatus (10) includes variable length control means (44) located so as to effectively and efficiently position the vibrator (36) relative to the base plate (30) and apparatus (40) to isolate the vibrator (36) from the control system (44) and from the vehicle frame (12) so that effective seismic vibration is imparted ...
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The Journal of the Acoustical Society of America, 1979
A seismic energy source which incorporates multiple augers and a rotary mechanism therefor mounted on a vehicle, the auger incorporating an internally situated seismic shock wave source which creates shock waves passing through a window in the auger into the soil.
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A seismic energy source which incorporates multiple augers and a rotary mechanism therefor mounted on a vehicle, the auger incorporating an internally situated seismic shock wave source which creates shock waves passing through a window in the auger into the soil.
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The Journal of the Acoustical Society of America, 1979
A downhole seismic source for use when drilling a borehole in the earth using a rotating drill string through which a drilling fluid is circulated. In one embodiment, a section of the drill string has a slot in it and a sleeve rotatably surrounding the slot with a plurality of spaced-apart slots arranged to align with the slot in section of drill pipe ...
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A downhole seismic source for use when drilling a borehole in the earth using a rotating drill string through which a drilling fluid is circulated. In one embodiment, a section of the drill string has a slot in it and a sleeve rotatably surrounding the slot with a plurality of spaced-apart slots arranged to align with the slot in section of drill pipe ...
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EAGE Vibroseis Workshop - Vibroseis acquisition and processing half century later, new developments in data quality and productivity, 2008
3 seismic source types, vibrators, explosives and weight drop are compared. A seismic wavelet is estimated for each source. The wavelets are normalized using specific source parameters: mass for the explosives, mass and heights for the weight drop, Peak force and sweep rate for the vibrators.
J. Meunier, R. Daures
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3 seismic source types, vibrators, explosives and weight drop are compared. A seismic wavelet is estimated for each source. The wavelets are normalized using specific source parameters: mass for the explosives, mass and heights for the weight drop, Peak force and sweep rate for the vibrators.
J. Meunier, R. Daures
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The Journal of the Acoustical Society of America, 1989
The volumetric capacity of the firing chamber (15) of an air gun is discretely quantized by mounting unit-volume inserts (44) interiorly of the firing chamber (15).
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The volumetric capacity of the firing chamber (15) of an air gun is discretely quantized by mounting unit-volume inserts (44) interiorly of the firing chamber (15).
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1979
Over the last twenty years the marine seismic source has evolved from a single solid chemical charge, detonated as a high explosive point source, radiating near-field destructive energy in all directions, to an areal array of low energy mechanical sources, harmless to the environment but focusing its energy in the far-field.
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Over the last twenty years the marine seismic source has evolved from a single solid chemical charge, detonated as a high explosive point source, radiating near-field destructive energy in all directions, to an areal array of low energy mechanical sources, harmless to the environment but focusing its energy in the far-field.
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The Journal of the Acoustical Society of America, 1988
A hydraulically controlled seismic energy source for impressing individual seismic energy pulses into the ground, wherein the hydraulic pressure forcing the ram downwardly is substantially reduced slightly before the ram contacts the ground, and a continual upward hydraulic force is applied to a downwardly facing surface of the ram, whereby the ram is ...
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A hydraulically controlled seismic energy source for impressing individual seismic energy pulses into the ground, wherein the hydraulic pressure forcing the ram downwardly is substantially reduced slightly before the ram contacts the ground, and a continual upward hydraulic force is applied to a downwardly facing surface of the ram, whereby the ram is ...
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Seismic Source Characterization
2017Seismic sources characterization (SSC) relies on the interpretation and integration of a variety of parameters and data primarily collected in a geological, geophysical, geotechnical and seismological database (D4-41, Carbon et al. 2012). It has three fundamental objectives: The identification (location and geometry) of all seismic sources ...
Alain Pecker +4 more
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