EP 3363989 A1 20180822 - DRILLING UNIT COMPRISING AN ELECTRIC HEAVE-COMPENSATION SYSTEM
Title (en)
DRILLING UNIT COMPRISING AN ELECTRIC HEAVE-COMPENSATION SYSTEM
Title (de)
BOHREINHEIT MIT EINEM ELEKTRISCHEN HIEV-AUSGLEICHSSYSTEM
Title (fr)
UNITÉ DE FORAGE COMPRENANT UN SYSTÈME DE COMPENSATION DE PILONNEMENT ÉLECTRIQUE
Publication
Application
Priority
EP 17156406 A 20170216
Abstract (en)
The invention relates to a drilling unit (100a, 100b) for mounting on a deck (200) of a floating vessel, the drilling unit (100a, 100b) comprising a drill tower structure (130) with a heave-compensation system for compensating vertical movements of the floating vessel due to waves. The drilling unit (100a, 100b) further comprises a winch (110) mounted at or near the deck (200), a crown block (151) mounted at a top side (140) of the drill tower structure (130) and at least one wire rope (120) provided between the winch (110) and the crown block (151). The heave-compensation system comprises a slideable support frame (150) configured to be moved relative to the drill tower structure (130) in a direction substantially parallel to the axial direction of the drill tower structure (130), wherein either the winch (110) or the crown block (151) is provided within the slideable support frame (150) such that a distance between the winch (110) and the crown block (151) is controllable, wherein the position of the slideable support frame (150) with respect to the drill tower structure (130) is controlled by at least one electric motor or linear actuator (171). Alternatively, the crown block may be dispensed with and the winch (110) is placed in the slideable support frame (150) at the top side (140) of the drill tower structure (130). The invention provides a drilling unit with an improved and overall more compact design of a compensation system.
IPC 8 full level
E21B 19/09 (2006.01)
CPC (source: EP US)
E21B 15/02 (2013.01 - US); E21B 19/006 (2013.01 - US); E21B 19/008 (2013.01 - US); E21B 19/09 (2013.01 - EP US)
Citation (applicant)
- US 7923946 B2 20110412 - WILLIAMS KEVIN R [US]
- FRANK LANGLO'S: "Application of reliability centered maintenance on a drilling system", MASTER THESIS, June 2014 (2014-06-01)
Citation (search report)
- [A] US 2009133881 A1 20090528 - ROODENBURG JOOP [NL], et al
- [A] US 4962817 A 19901016 - JONES ARTHUR B [US], et al
- [A] US 3804183 A 19740416 - DUNCAN A, et al
- [A] WO 2015189368 A2 20151217 - CAMERON SENSE AS [NO]
- [A] NO 20151153 A1 20170309 - WEST DRILLING PRODUCTS AS [NO]
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3363989 A1 20180822; EP 3363989 B1 20190327; US 2019360282 A1 20191128; WO 2018151606 A1 20180823
DOCDB simple family (application)
EP 17156406 A 20170216; NO 2018050041 W 20180215; US 201816479185 A 20180215