EP 0512331 B1 19960918 - Device for cleaning the well-bore-surrounding-zone
Title (en)
Device for cleaning the well-bore-surrounding-zone
Title (de)
Einrichtung zur Reinigung der bohrlochnahen Zone
Title (fr)
Dispositif pour nettoyer la zone proche du trou de sondage
Publication
Application
Priority
SU 4928469 A 19910506
Abstract (en)
[origin: EP0512331A1] The device for cleaning the well-bore-surrounding zone contains a hollow body (1) in which a unit for generating hydrodynamic vibrations is arranged which is constructed in the form of a swirl chamber (3) having inlet passages (4) which are arranged in its top part and by means of which it is connected to the hollow space of the body (1). The outlet passage (5) of the swirl chamber (3) is made with a conical taper. <IMAGE>
IPC 1-7
IPC 8 full level
E21B 37/04 (2006.01); E21B 7/24 (2006.01); E21B 21/00 (2006.01); E21B 41/00 (2006.01)
CPC (source: EP US)
E21B 7/24 (2013.01 - EP US); E21B 37/00 (2013.01 - EP US); E21B 41/0078 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT
DOCDB simple family (publication)
EP 0512331 A1 19921111; EP 0512331 B1 19960918; DE 59207154 D1 19961024; JP H06257371 A 19940913; US 5311955 A 19940517
DOCDB simple family (application)
EP 92106953 A 19920423; DE 59207154 T 19920423; JP 11381692 A 19920506; US 87847692 A 19920505