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:
Feb. 11, 2020
Filed:
Sep. 09, 2014
Welltec A/s, Allerød, DK;
Tomas Sune Andersen, Helsingør, DK;
Sven Karsten Jensen, Stenløse, DK;
Welltec A/S, Allerød, DK;
Abstract
Drilling tool () for drilling openings in a cement ballast tank () of an oil rig in order to gain access to an internal space in the ballast tank comprising an electrical motor () driving a first shaft (); a pump () driven by the motor for pumping well fluid in through an inlet () and out through an outlet (); a gear () driven by the first shaft extending through the pump for reducing rotation of a second shaft (); and a drilling head () having bits and at least one drilling head fluid channel and being driven by the second shaft (), the outlet of the pump being fluidly connected with the fluid channel to pump well fluid out through the fluid channel.