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:
Jun. 13, 2023
Filed:
Mar. 29, 2018
Metrol Technology Ltd, Aberdeen, GB;
Steve Martin Hudson, Aberdeen, GB;
Leslie David Jarvis, Aberdeen, GB;
METROL TECHNOLOGY LTD., Aberdeen, GB;
Abstract
A downhole communication system for communication between a first and second location in a subsea oil and/or gas well installation. The oil and/or gas well installation comprises out of hole metallic structure comprising a riserrunning upwards away from the mudline ML, and downhole metallic structurerunning down into the well. The communication system is arranged so that at least part of a signal path for communications between the first and second locations is provided by the downhole metallic structuresuch that, in use, data to be communicated between the first and second locations is carried by electrical signals in the downhole metallic structure. The communication system further comprises a first noise cancellation arrangement arranged for sensing a noise signal generated in the out of hole metallic structure and arranged for applying a corresponding noise cancelling signal to the out of hole metallic structure or the downhole metallic structure to inhibit introduction of electrical noise into the downhole metallic structurefrom the riser