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:
Jul. 14, 2020
Filed:
Feb. 02, 2018
Nabors Drilling Technologies Usa, Inc., Houston, TX (US);
Steve Deel, Cypress, TX (US);
NABORS DRILLING TECHNOLOGIES USA, INC., Houston, TX (US);
Abstract
A washpipe assembly for use in a drilling operation, comprises a washpipe having upper and lower ends, an upper seal assembly in fluid communication with the washpipe upper end and including at least one seal in sealing engagement with the washpipe, a lower seal assembly in fluid communication with the washpipe lower end and including at least one seal in sealing engagement with the washpipe, at least one of the upper and lower seal assemblies being rotatable relative to the washpipe at a relative rotation rate, a pressure sensor for measuring a fluid pressure indicative of fluid pressure in the washpipe, a rotation sensor for measuring the relative rotation rate; and a microprocessor adapted to calculate a total pressure-distance value (TPDV) indicative of the amount of washpipe assembly lifespan expended, wherein the TPDV is a function of the relative rotation rate and the pressure.