EP 4229268 A1 20230823 - ADAPTIVE DRILLSTRING CONDITION DETERMINATION
Title (en)
ADAPTIVE DRILLSTRING CONDITION DETERMINATION
Title (de)
ADAPTIVE BESTIMMUNG DES ZUSTANDS EINES BOHRSTRANGS
Title (fr)
DÉTERMINATION DE CONDITION DE TRAIN DE TIGES DE FORAGE ADAPTATIVE
Publication
Application
Priority
- US 202063093022 P 20201016
- US 2021071906 W 20211015
Abstract (en)
[origin: US2022120176A1] A method can include identifying a threshold value for a drillstring off-bottom condition determination; filtering time series surface data of a post-connection drilling state of the drillstring using the threshold value to generate filtered time series surface data; and statistically determining a drillstring off-bottom condition value using the filtered time series surface data.
IPC 8 full level
E21B 19/16 (2006.01); E21B 44/02 (2006.01)
CPC (source: EP US)
E21B 7/04 (2013.01 - EP US); E21B 44/02 (2013.01 - EP); E21B 47/024 (2013.01 - EP); E21B 47/18 (2013.01 - EP US); E21B 2200/20 (2020.05 - EP US)
Citation (search report)
See references of WO 2022082227A1
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
US 2022120176 A1 20220421; CA 3198834 A1 20220421; CN 117098906 A 20231121; EP 4229268 A1 20230823; WO 2022082227 A1 20220421
DOCDB simple family (application)
US 202117451088 A 20211015; CA 3198834 A 20211015; CN 202180083805 A 20211015; EP 21881335 A 20211015; US 2021071906 W 20211015