Global Patent Index - EP 0999347 A1

EP 0999347 A1 2000-05-10 - Acoustic impulse gun

Title (en)

Acoustic impulse gun

Title (de)

Akkustische Impulsvorrichtung

Title (fr)

Dispositif acoustique d'impulsions

Publication

EP 0999347 A1 (EN)

Application

EP 99308253 A

Priority

US 18479498 A

Abstract (en)

An acoustic impulse gun (10) and associated methods of transmitting signals to equipment positioned in a subterranean well permits the signals to be transmitted in a safe, economical, convenient and efficient manner. The acoustic impulse gun (10) includes an accumulator (12), which is momentarily placed in fluid communication with the well when fluid pressure is applied to a device (20) interconnected between the accumulator (12) and the well. The device (20) includes a shuttle (32) which displaces relative to an inlet port (16) in fluid communication with the accumulator (12), and a discharge port (18) in fluid communication with the well. Fluid pressure is applied to the device (20) in a pattern by a signal control system, thereby causing the shuttle (32) to successively and rapidly permit fluid pressure pulses to be applied to the well. <IMAGE>

IPC 1-7 (main, further and additional classification)

E21B 47/18

IPC 8 full level (invention and additional information)

E21B 47/18 (2012.01)

CPC (invention and additional information)

E21B 47/187 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB IE NL

EPO simple patent family

EP 0999347 A1 20000510; AU 5602299 A 20000504

INPADOC legal status


2003-11-19 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030401

2001-01-24 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: DE FR GB IE NL

2000-08-23 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000627

2000-05-10 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IE NL

2000-05-10 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI