Title (en)

ELECTRICAL WELL HEATING SYSTEM AND METHOD

Title (de)

ELEKTRISCHES BOHRLOCHHEIZSYSTEM UND -VERFAHREN

Title (fr)

SYSTEME ET PROCEDE DE CHAUFFAGE ELECTRIQUE PAR FORAGE

Publication

EP 1381753 A1 20040121 (EN)

Application

EP 01994611 A 20011011

Priority

• EP 01994611 A 20011011
• EP 0111819 W 20011011
• EP 0104641 W 20010424

IPC 1-7

E21B 36/04; E21B 43/24

IPC 8 full level

E21B 36/04 (2006.01); E21B 43/24 (2006.01)

Citation (search report)

See references of WO 02086284A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family (publication)

EP 1381753 A1 20040121; EP 1381753 B1 20051228

DOCDB simple family (application)

EP 01994611 A 20011011