EP 2414629 B1 20190911 - TWO COIL GUIDANCE SYSTEM FOR TRACKING BOREHOLES
Title (en)
TWO COIL GUIDANCE SYSTEM FOR TRACKING BOREHOLES
Title (de)
ZWEISPULIGES FÜHRUNGSSYSTEM FÜR DIE VERFOLGUNG VON BOHRLÖCHERN
Title (fr)
SYSTÈME DE GUIDAGE À DEUX BOBINES POUR SUIVRE DES TROUS DE FORAGE
Publication
Application
Priority
- US 2010029328 W 20100331
- US 16644309 P 20090403
Abstract (en)
[origin: US2010256913A1] A method and apparatus for tracking the drilling progress of a borehole such as a horizontal borehole that is drilled under an obstacle along a prescribed path is based upon triangulation from two laterally separated loops of wire lying on the ground, which generate corresponding alternating magnetic fields.
IPC 8 full level
E21B 47/022 (2012.01); E21B 47/024 (2006.01)
CPC (source: EP US)
E21B 47/0232 (2020.05 - EP US)
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
DOCDB simple family (publication)
US 2010256913 A1 20101007; CA 2765719 A1 20101007; CA 2765719 C 20180612; EP 2414629 A1 20120208; EP 2414629 A4 20170614; EP 2414629 B1 20190911; WO 2010114872 A1 20101007
DOCDB simple family (application)
US 75115410 A 20100331; CA 2765719 A 20100331; EP 10759325 A 20100331; US 2010029328 W 20100331