EP 4348002 A1 20240410 - MEASURING DEVICE FOR A CASING STRING OF A DEEP BOREHOLE
Title (en)
MEASURING DEVICE FOR A CASING STRING OF A DEEP BOREHOLE
Title (de)
MESSVORRICHTUNG FÜR EINE ROHRTOUR EINER TIEFENBOHRUNG
Title (fr)
DISPOSITIF DE MESURE POUR COLONNE DE TUBAGE D'UN TROU DE SONDE PROFOND
Publication
Application
Priority
- DE 102021113965 A 20210531
- EP 2022061658 W 20220502
Abstract (en)
[origin: WO2022253500A1] The application relates to a measuring device (100, 300, 400) for a casing string (450) of a deep borehole, comprising: - at least one electrical measurement cable (102, 202, 402), which can be inserted into the casing string (450) and which has a first cable end (311) connectable to at least a measurement apparatus (110, 310) of the measurement device (100, 300, 400) and has an additional cable end (110, 210); - at least one measurement head (104, 204, 404, 504), which is disposed at the additional cable end (110, 210) and which has at least one electrically conductive connection element (106, 206, 406), comprising a contact end (108, 208, 408), designed for contacting an inner wall (474) of the casing string (450); - at least one ground contact element (114, 414), which can be connected to the measurement apparatus (110, 310); wherein the measurement apparatus (110, 310) is designed to measure at least one electrical measurement variable which is dependent on at least one electrical protection variable applied to the casing string (450).
IPC 8 full level
E21B 47/00 (2012.01); C23F 13/04 (2006.01); E21B 41/02 (2006.01)
CPC (source: EP US)
C23F 13/04 (2013.01 - EP); E21B 41/02 (2013.01 - EP US); E21B 47/00 (2013.01 - EP US); E21B 47/017 (2020.05 - US); G01N 17/006 (2013.01 - US); F16L 2101/30 (2013.01 - US); G01M 3/40 (2013.01 - US); G01N 27/041 (2013.01 - US)
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)
DE 102021113965 A1 20221201; EP 4348002 A1 20240410; US 2024084693 A1 20240314; WO 2022253500 A1 20221208
DOCDB simple family (application)
DE 102021113965 A 20210531; EP 2022061658 W 20220502; EP 22727055 A 20220502; US 202318510010 A 20231115