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US 8,619,503 B2Granted
Sparker type wellbore seismic energy source having controllable depth independent frequency
AssigneeTechnology International Incorporated
InventorsRobert P. Radtke, Robert H. Stokes, David A. Glowka
Life of this patent
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Abstract
A wellbore seismic source includes a sparker electrically coupled to a power source. The sparker is disposed in a pressure-sealed canister, wherein the canister is at least partially filled with liquid. At least one of the pressure of the liquid and the energy discharged by the power source through the sparker is selected to cause emission of acoustic energy at a selected frequency.
Claims19
A wellbore seismic source, comprising:
- a sparker electrically coupled to a power source, the sparker having a spark gap disposed in a pressure-sealed canister, the canister at least partially filled with liquid, the canister made from a material and configured to have an internal pressure independent of a pressure outside the canister;
- wherein at least one of a pressure of the liquid and an energy discharged by the power source through the sparker is selected to cause emission of acoustic energy at a selected frequency.
A method for generating seismic energy in a wellbore, comprising:
- discharging electrical energy across a spark gap disposed in the wellbore, wherein the spark gap is disposed in liquid held at a selected pressure independent of an hydrostatic pressure in the wellbore and at least one of the liquid pressure is selected and an amount of energy discharged through the spark gap is selected to generate seismic energy at a selected frequency.
Dependencies are inferred from the claim text.