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:
Aug. 24, 1993
Filed:
Aug. 04, 1992
Joseph V Hebert, Tomball, TX (US);
MASX Energy Services Group, Inc., Houston, TX (US);
Abstract
A wellhead severing system for detonating a liquid explosive charge and subsequent removal of the wellhead from the sea floor. The explosive severing system includes a charge container holding a liquid explosive and a contractable bladder in fluid communication with the charge container to compensate for pressure and temperature variations as the system is lowered to the wellhead in the sea floor. Liquid explosive from the bladder flows into the charge container maintaining a constant volume of uncontaminated explosive around the detonators. The severing system is lowered into the wellhead on a running string and detonated through high voltage wires extending to a connector or the surface.