Method for enhancing low frequency output of impulsive type seismic energy sources and its application to a seismic energy source for use while drilling

Radtke, Robert P; Stokes, Robert H; Glowka, David A

Title: Method for enhancing low frequency output of impulsive type seismic energy sources and its application to a seismic energy source for use while drilling

Patent · Tue Dec 02 00:00:00 EST 2014

OSTI ID:1164673

Radtke, Robert P; Stokes, Robert H; Glowka, David A

A method for operating an impulsive type seismic energy source in a firing sequence having at least two actuations for each seismic impulse to be generated by the source. The actuations have a time delay between them related to a selected energy frequency peak of the source output. One example of the method is used for generating seismic signals in a wellbore and includes discharging electric current through a spark gap disposed in the wellbore in at least one firing sequence. The sequence includes at least two actuations of the spark gap separated by an amount of time selected to cause acoustic energy resulting from the actuations to have peak amplitude at a selected frequency.

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Research Organization:: Technology International, Inc., Kingwood, TX (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: FC26-04NT42242

Assignee:: Technology International, Inc. (Kingwood, TX)

Patent Number(s):: 8,902,712

Application Number:: 12/337,406

OSTI ID:: 1164673

Resource Relation:: Patent File Date: 2008 Dec 17

Country of Publication:: United States

Language:: English

References (13)

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Title: Method for enhancing low frequency output of impulsive type seismic energy sources and its application to a seismic energy source for use while drilling

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