EP 2783070 A2 20141001 - METHOD AND SYSTEM FOR CONTROLLING VIBRATIONS IN A DRILLING SYSTEM
Title (en)
METHOD AND SYSTEM FOR CONTROLLING VIBRATIONS IN A DRILLING SYSTEM
Title (de)
VERFAHREN UND SYSTEM ZUM STEUERN VON SCHWINGUNGEN IN EINEM BOHRSYSTEM
Title (fr)
PROCÉDÉ ET SYSTÈME POUR CONTRÔLER LES VIBRATIONS DANS UN SYSTÈME DE FORAGE
Publication
Application
Priority
- EP 11190673 A 20111125
- EP 2012073322 W 20121122
- EP 12788552 A 20121122
Abstract (en)
[origin: WO2013076184A2] The invention provides a control system and method for limiting vibrations in a drilling system, including a drill string and a drive system for providing a drive torque for rotating the drill string at a reference frequency (Omegaref). The control system comprises: - a sensor module for determining at least one uphole parameter of the drilling system; a model module provided with a model of the drilling system, the model module being adapted to provide modeled parameters of the drilling system using the drive torque as an input; - a model gain module for providing a model gain vector (L) to the model module in response to one or more of the modeled parameters and the drive torque (Tm), the model gain vector enabling the module module to update the model thereby obtaining an updated model; and a control module for providing a torque correction factor (u) to the drive system depending on the modeled parameters, the uphole parameter, the reference frequency (Omegaref ), and the drive torque (Tm).
IPC 8 full level
E21B 44/00 (2006.01)
CPC (source: EP US)
E21B 44/00 (2013.01 - EP US)
Citation (search report)
See references of WO 2013076184A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2013076184 A2 20130530; WO 2013076184 A3 20140327; CA 2856004 A1 20130530; EP 2783070 A2 20141001; US 2014318865 A1 20141030
DOCDB simple family (application)
EP 2012073322 W 20121122; CA 2856004 A 20121122; EP 12788552 A 20121122; US 201214360109 A 20121122