CA2800593CCA2800593ACA2800593ACA2800593CCA 2800593 CCA2800593 CCA 2800593CCA 2800593 ACA2800593 ACA 2800593ACA 2800593 ACA2800593 ACA 2800593ACA 2800593 CCA2800593 CCA 2800593C
Authority
CA
Canada
Prior art keywords
rod
rotator
rotation
magnets
lift system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weatherford Technology Holdings LLC
Original Assignee
Weatherford Technology Holdings LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US13/585,048external-prioritypatent/US9140113B2/en
Application filed by Weatherford Technology Holdings LLCfiledCriticalWeatherford Technology Holdings LLC
Publication of CA2800593A1publicationCriticalpatent/CA2800593A1/fr
Application grantedgrantedCritical
Publication of CA2800593CpublicationCriticalpatent/CA2800593C/fr
Des méthodes et un appareil sont fournis pour surveiller la rotation dun élément dans un système de levage à tiges à mouvement alternatif. De cette manière, lusure des tiges et des tubes du système peut être minimisée.