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:
May. 26, 2015
Filed:
Oct. 25, 2012
Agr Subsea As, Straume, NO;
Bernt Eikemo, Bergen, NO;
AGR SUBSEA AS, Straume, NO;
Abstract
A method and a device for enabling the use of riserless drilling fluid recovery from a seabed-based borehole () which is to be drilled by means of a casing (), the casing () being provided with a drill bit () at its lower portion and with an inner wellhead () at its upper portion, and there being a conductor casing (), which has an outer wellhead (), in the seabed (), the method including: —providing a suction module () with a dividable adapter () which fits complementarily in the outer wellhead (); —drilling a length of the borehole () by means of the casing () extending through the suction module (), while, at the same time, drilling fluid is flowing via the suction module () from the borehole (); —subsequently pulling the adapter () up from the outer wellhead () and dividing the adapter (); and—lowering the casing () with the inner wellhead () through the suction module () and the adapter () to its position in the outer wellhead ().