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:
Oct. 17, 2006
Filed:
Apr. 23, 2004
Brenden M. Grove, Missouri City, TX (US);
Lawrence A. Behrmann, Houston, TX (US);
Ian C. Walton, Sugar Land, TX (US);
Philip Kneisl, Pearland, TX (US);
Andrew T. Werner, East Bernard, TX (US);
Brenden M. Grove, Missouri City, TX (US);
Lawrence A. Behrmann, Houston, TX (US);
Ian C. Walton, Sugar Land, TX (US);
Philip Kneisl, Pearland, TX (US);
Andrew T. Werner, East Bernard, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
An apparatus for reducing the post-detonation pressure of a perforating gun, the apparatus including a perforating gun carrying at least one explosive charge, wherein when the explosive charge is detonated the explosive charge produces a pressurized detonation gas, and a mechanism for reducing the pressure of the detonation gas proximate the perforating gun. The detonation gas pressure is desirably reduced in a time frame sufficient to create a dynamic underbalance condition to facilitate a surge flow of fluid from a reservoir into a wellbore. The pressure reduction mechanism may include singularly or in combination a heat sink to reduce the temperature of the detonation gas, a reactant to recombine with the reactant gas and reduce the molar density of the detonation gas, and a physical compression mechanism to utilize the waste energy of the detonation gas to create work, simultaneously reducing the temperature of the gas and the molar density of the detonation gas.