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:
Nov. 05, 2002
Filed:
Jan. 10, 2001
Scott Kennedy Beall, Houston, TX (US);
Roy Ortiz, Houston, TX (US);
Kvaerner Oilfield Products, Houston, TX (US);
Abstract
A remotely installed pressure containing closure having a slight negative buoyancy, and a method for assembly of a slight negative buoyancy remotely installed pressure containing closure, such as a tree cap, on a subsea assembly, having at least one fluid bore, and more preferably a production bore and an annulus bore, wherein the remotely installed pressure containing closure comprises: a guidance ring having a plurality of chambers; optionally, a plurality of orientation pins affixed to the guidance ring for aligning the guidance ring to a funnel; buoyant material disposed in the chambers of the guidance ring to assist in creating a slight negative buoyancy for the remotely installed pressure containing closure; a cylinder connected to the remotely installed pressure containing closure for engaging sealing means on a subsea assembly for sealing at least one seal of at least one fluid bore of said subsea assembly; a debris cover connected to said cylinder to house equipment and cover the fluid bore; a mandrel having at least one fluid bore disposed under said debris cover; an actuator secured to said cylinder; a plurality of locking dogs attached to said actuator by a plurality of rotatable rods for locking down said remotely installed pressure containing closure onto said mandrel; a rotatable handle secured to said actuator; a handle extension rod connected to said handle; a handle locking sleeve connected to said handle extension rod; and a locking ring in slidable engagement with said handle locking sleeve for engaging said ring against said subsea mandrel; and at least one dual function stab port for receiving a stab to activate the hydraulic cylinder.