Blast recorder and method of displaying blast energy

Details Blast recorder and method of displaying blast energy Blast recorder and method of displaying blast energy

1989-05-15

1990-06-19

Reynolds, Bruce A.

Recorders

Combined with external recorder operating means

Well logging

367 37, 367 38, 367 43, 367 47, 367 49, 367 68, 3642239, 364421, G01D 902, G01V 124, G01V 128

Patent

active

049357484

ABSTRACT:
A blast recorder and method for monitoring and processing vibrations from blasts, and for displaying the results in a nearly real time basis and in a manner which is easily interpreted by a relatively unskilled field worker and corresponds to a form which closely correspond to the real damage causing aspect of the blast than heretofore. The invention operates by receiving seismic energy signals from a blast sensor, processing the energy signals to obtain velocity signals relating to said blast, filtering either the energy signals prior to, or the velocity signals following said processing step, into high and low frequency bands, to obtain high and low band velocity signals, integrating over the period of the blast the high and low band velocity signals to obtain high and low band displacement signals, determining the peak velocity signal in each band, over the period of the blast, and displaying one or all of the peak of the velocity signal determined in the high frequency band, the peak of the velocity signal determined in the low frequency band, and the displacement signal related to the low frequency band.

REFERENCES:
patent: 4571710 (1986-02-01), Neidell

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