EP 2981673 A4 20161116 - DOWNHOLE WHIRL DETECTION WHILE DRILLING
Title (en)
DOWNHOLE WHIRL DETECTION WHILE DRILLING
Title (de)
ERKENNUNG VON WIRBELN IN EINEM BOHRLOCH WÄHREND DES BOHRENS
Title (fr)
DÉTECTION DE TOURBILLON DE FOND DE TROU PENDANT LE FORAGE
Publication
Application
Priority
- US 201361806897 P 20130331
- US 201313874814 A 20130501
- US 2014032042 W 20140327
Abstract (en)
[origin: WO2014165389A1] A method for making downhole whirl measurements in a drill string includes rotating a sensor set in a borehole. The sensor set is deployed in the drill string and includes at least one cross-axial accelerometer and at least one cross-axial magnetometer. Sensor measurements, including a plurality of accelerometer measurements and a plurality of magnetometer measurements made at predetermined measurement intervals, may be obtained while drilling and used to compute a whirl magnitude.
IPC 8 full level
E21B 47/12 (2012.01); E21B 44/00 (2006.01); E21B 47/00 (2012.01); G06F 19/00 (2011.01)
CPC (source: EP US)
E21B 44/00 (2013.01 - EP); E21B 47/007 (2020.05 - EP); E21B 47/01 (2013.01 - EP US); E21B 47/013 (2020.05 - EP)
Citation (search report)
- [XI] US 2012222900 A1 20120906 - RODNEY PAUL F [US], et al
- [A] US 2011186353 A1 20110804 - TURNER WILLIAM EVANS [US], et al
- [A] US 5864058 A 19990126 - CHEN CHEN-KANG DAVID [US]
- See also references of WO 2014165389A1
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 2014165389 A1 20141009; EP 2981673 A1 20160210; EP 2981673 A4 20161116
DOCDB simple family (application)
US 2014032042 W 20140327; EP 14778107 A 20140327