The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 1985
Filed:
Apr. 18, 1983
Dean A Eicher, Bellaire, TX (US);
Fount E McKee, Houston, TX (US);
Delta-X Corporation, Houston, TX (US);
Abstract
A gas gun for producing pressure pulses for measuring the liquid level in a well. A body is adapted to be connected to a well and includes first and second chambers which are interconnected by a passageway. Pressure pulses flowing between the chambers creates a pressure pulse for transmittal to a well which is measured by a microphone measuring pressure variations. A piston actuated valve opens and closes the passageway between the first and second chambers. A firing valve transmits the higher pressure in one of the chambers to the back of the piston for closing the valve, and after one of the chambers is pressurized, exhausts the pressure from the back of the pressurized piston for opening the valve and creating a pressure pulse between the chambers. A spring biases the piston actuated valve to the closed position. The piston actuated valve, when closed, includes a first face portion exposed to one chamber and a second face portion exposed to the second chamber each of which is smaller in area than the back side of the piston and the gas gun can be actuated with a high pressure gas in either chamber. One of the chambers includes means for gas charging and means for releasing gas from the chamber. The gas gun may be fired from a remote location.