EP 2317069 A1 20110504 - Magnetic ranging system for controlling a drilling process
Title (en)
Magnetic ranging system for controlling a drilling process
Title (de)
Magnetisches Abstandsmesssystem zur Steuerung eines Bohrvorganges
Title (fr)
Système de télémetrie par magnétisme pour contrôler un procès de forage
Publication
Application
Priority
EP 09174667 A 20091030
Abstract (en)
The invention relates to a ranging system (1) for controlling a drilling process downhole. The ranging system has a longitudinal direction and comprises a drilling tool (2) for drilling a first borehole (3), the drilling tool having a tool axis (4) and comprising a magnetic field source (5) generating a magnetic field (6) and having a magnetic field source axis (7). In addition, the ranging system comprises a sensing tool (8) arranged in a second borehole (9) for measuring the magnetic field by means of a sensor unit (10). The magnetic field source axis is substantially parallel to the tool axis.
IPC 8 full level
E21B 47/022 (2006.01); G01V 3/26 (2006.01)
CPC (source: EP US)
E21B 7/04 (2013.01 - EP US); E21B 47/0228 (2020.05 - EP US)
Citation (search report)
- [XI] US 2008041626 A1 20080221 - CLARK BRIAN [US]
- [X] US 2009260879 A1 20091022 - CLARK BRIAN [US], et al
- [A] US 5589775 A 19961231 - KUCKES ARTHUR F [US]
- [A] US 2008275648 A1 20081106 - ILLFELDER HERBERT M J [US]
- [A] US 4933640 A 19900612 - KUCKES ARTHUR F [US]
- [A] US 2008018334 A1 20080124 - REIDERMAN ARCADY [US]
- [A] US 2009260878 A1 20091022 - MORLEY JAN S [US], et al
Designated contracting state (EPC)
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 SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2317069 A1 20110504; AU 2010311357 A1 20120412; BR 112012009224 A2 20160823; CA 2774292 A1 20110505; CN 102782250 A 20121114; EP 2494148 A1 20120905; MX 2012004930 A 20120522; US 2012193144 A1 20120802; WO 2011051431 A1 20110505
DOCDB simple family (application)
EP 09174667 A 20091030; AU 2010311357 A 20101029; BR 112012009224 A 20101029; CA 2774292 A 20101029; CN 201080049026 A 20101029; EP 10773066 A 20101029; EP 2010066443 W 20101029; MX 2012004930 A 20101029; US 201013500085 A 20101029