Global Patent Index - EP 0565141 A2

EP 0565141 A2 19931013 - Acoustic data transmission through a drill string.

Title (en)

Acoustic data transmission through a drill string.

Title (de)

Akustische Datenübertragung über ein Bohrgestänge.

Title (fr)

Transmission de données acoustiques au travers d'un cordon de tube de forage.

Publication

EP 0565141 A2 (EN)

Application

EP 93111079 A

Priority

  • EP 93111079 A
  • US 18432688 A

Abstract (en)

Acoustical signals are transmitted through a drill string by canceling upward moving acoustical noise and by preconditioning the data in recognition of the comb filter impedance characteristics of the drill string. <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 FR GB NL

DOCDB simple family (publication)

EP 0565141 A2 19931013; EP 0565141 A3 19931020

DOCDB simple family (application)

EP 93111079 A 19890421