EP 2554778 A2 20130206 - Systems and Methods for Directional Pulsed Electric Drilling
Title (en)
Systems and Methods for Directional Pulsed Electric Drilling
Title (de)
Systeme und Verfahren für direktionales Impuls-Elektrobohren
Title (fr)
Systèmes et procédés de forage électrique pulsé directionnel
Publication
Application
Priority
US 201161514304 P 20110802
Abstract (en)
Pulsed-electric drilling systems can be augmented with a steering mechanism that shifts at least a portion of a bit relative to a borehole centerline. Illustrative mechanisms include ball-and-socket joints(82), pivot-and-hinge joints, rotary steerable systems, and bent subs. As the bit (26) detaches formation material using electric pulses, the detached material being flushed away by a flow of drilling fluid, the shifting of the bit from the centerline causes the borehole to turn in the direction of the bit.
IPC 8 full level
CPC (source: EP US)
E21B 7/067 (2013.01 - EP US); E21B 7/15 (2013.01 - EP US)
Citation (applicant)
- US 4741405 A 19880503 - MOENY WILLIAM M [US], et al
- WO 2008003092 A2 20080103 - TETRA CORP [US], et al
- WO 2010027866 A2 20100311 - TETRA CORP [US], et al
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
DOCDB simple family (publication)
EP 2554778 A2 20130206; EP 2554778 A3 20151202; US 2013032399 A1 20130207
DOCDB simple family (application)
EP 12179100 A 20120802; US 201213564252 A 20120801