EP 2864576 A4 20160727 - DETECTING A DRILL STRING WASHOUT EVENT
Title (en)
DETECTING A DRILL STRING WASHOUT EVENT
Title (de)
ERKENNUNG EINES AUSSCHWEMMUNGSEREIGNISSES EINES BOHRSTRANGS
Title (fr)
DÉTECTION D'UN ÉVÉNEMENT DE FUITE DE TRAIN DE TIGES DE FORAGE
Publication
Application
Priority
- US 201261663240 P 20120622
- US 2013046678 W 20130620
Abstract (en)
[origin: WO2013192365A1] A method for detecting a drill string washout event. The method includes locating a drill string in a wellbore formed in a subterranean formation. A drilling fluid is pumped into the drill string. The drill string includes a turbine that spins in response to the drilling fluid flowing therethrough. A comparison is made between a rate that the drilling fluid is pumped into the drill string and a spin rate of the turbine. A defect is determined to be formed in the drill string based upon the comparison.
IPC 8 full level
E21B 21/08 (2006.01); E21B 4/02 (2006.01); E21B 47/008 (2012.01); E21B 47/10 (2012.01)
CPC (source: EP US)
E21B 4/02 (2013.01 - US); E21B 21/08 (2013.01 - EP US); E21B 47/117 (2020.05 - EP US)
Citation (search report)
- [X] US 2925251 A 19600216 - ARPS JAN J
- [X] US 2004124009 A1 20040701 - HOTEIT LEILA [FR], et al
- [XI] WO 2009102735 A2 20090820 - BAKER HUGHES INC [US], et al
- [X] US 4941951 A 19900717 - SHEPPARD MICHAEL [US], et al
- See references of WO 2013192365A1
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 2013192365 A1 20131227; WO 2013192365 A8 20141231; CA 2876895 A1 20131227; EP 2864576 A1 20150429; EP 2864576 A4 20160727; US 2015184504 A1 20150702
DOCDB simple family (application)
US 2013046678 W 20130620; CA 2876895 A 20130620; EP 13806487 A 20130620; US 201314406223 A 20130620