Simple multishot downhole explosive tool

Details Simple multishot downhole explosive tool Simple multishot downhole explosive tool

1992-04-30

1994-01-11

Lobo, Ian J.

Acoustics

Geophysical or subsurface exploration

Well logging

181116, 175 455, G01V 106, G01V 140

Patent

active

052783596

ABSTRACT:
A downhole seismic acoustical signal source capable of selectively firing numerous, prewired explosive charges. The downhole seismic source has a firing system that uses a sequence of combinations of two conductors at a time and a downhole diode array to select and fire a single charge. The conductors are connected to a Surface Control Unit at the surface. A seismic crew on the surface can select and fire any charge through this control unit. The downhole seismic source has the ability to fire numerous explosive charges in a given downhole trip through the firing of many individual explosive charges.

REFERENCES:
patent: 4208966 (1980-06-01), Hart
patent: 4433476 (1984-02-01), Bailey et al.
patent: 4895218 (1990-01-01), Chen et al.

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