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. 10, 2000
Filed:
Dec. 10, 1998
Gerald W Crotwell, Sugarland, TX (US);
Dril-Quip, Inc., Houston, TX (US);
Abstract
Apparatus for use in the completion and workover of a subsea well adapted for coil tubing intervention comprises a surface tree having an upper end on which a coil tubing injection unit may be mounted, a tension joint adapted to be connected to the upper end of a lower riser section extending to a subsea tree and to be suspended from a tensioning system at the surface to enable the lower riser section to be maintained in tension, an upper riser section for connection at its upper end to the surface tree and at its lower end to the tension joint, and a surface joint mounted on and surrounding the riser section in position to extend through the spider at the floor of an offshore rig. The upper riser section includes an upper portion having an upper connector intermediate the surface tree and surface joint and a lower portion having a lower connector intermediate the surface joint and tension joint, and an upper sleeve is supported by the surface joint for shifting between a lower position in which access may be had to the upper connector and an upper position extending between the surface joint and surface tree to surround the upper riser portion, and a lower sleeve is supported by the surface joint for shifting between a lower position in which access may be had to the lower riser connector and an upper position extending between the surface joint and tension joint to surround the lower riser portion.