Effects of delay shooting on the nature of P-wave seismograms

Journal Article · Mon Dec 01 00:00:00 EST 1980 · Bull. Seismol. Soc. Am.; (United States)

OSTI ID:6275120

Greenhalgh, S A

P-wave spectra have been computed from several mine blast records. Amplitudes of the low frequency peaks were found to correlate with the total size of the explosion. This agrees with theoretical source spectra calculations for multiple-delayed shots. The theoretical calculations also show that at higher frequencies (excepting multiples of the delay frequency), the spectral amplitudes are determined by the maximum charge per delay and not by the total charge size. Synthetic seismograms have been computed for various source and absorption models. It appears that the seismic waveforms are more sensitive to the number of rows and the row delay than they are to the total number of shots and the individual delays in a blast. 11 references.

• OSTI ID: 6275120
• Journal Information: Bull. Seismol. Soc. Am.; (United States), Vol. 70:6
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
EXPLOSIVE FRACTURING
GEOPHYSICS
OIL WELLS
AMPLITUDES
DETONATIONS
EXPLOSIONS
SEISMIC P WAVES
SEISMOGRAPHS
WAVE PROPAGATION
WELL STIMULATION
COMMINUTION
FRACTURING
MEASURING INSTRUMENTS
SEISMIC ARRAYS
SEISMIC DETECTORS
SEISMIC WAVES
STIMULATION
WELLS
020300* - Petroleum- Drilling & Production
020200 - Petroleum- Reserves
Geology
& Exploration