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1 247 852 documents amended

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EP 0526246 A2 19930203 - Data transmission along a borehole.

Title (en)

Data transmission along a borehole.

Title (de)

Datenübertragung entlang eines Bohrloches.

Title (fr)

Transmission de données le long d'un puits de forage.

Publication

EP 0526246 A2 19930203 (EN)

Application

EP 92307022 A 19920731

Priority

GB 9116487 A 19910731
GB 9120420 A 19910925

Abstract (en)

Data from an effector at the end of a pipe in a borehole is transmitted to the surface as acoustic compression waves in the pipe. Similarly instructions can be passed from the surface to the end effector by acoustic compression waves in the pipe. <IMAGE>

IPC 1-7

E21B 47/12

IPC 8 full level

E21B 47/16 (2006.01)

CPC (source: EP)

E21B 47/16 (2013.01)

Designated contracting state (EPC)

DE DK FR NL

DOCDB simple family (publication)

EP 0526246 A2 19930203; CA 2075130 A1 19930201

DOCDB simple family (application)

EP 92307022 A 19920731; CA 2075130 A 19920731