Abrégé

A cementing device for establishing a false bottom in a well bore for formation of a cement plug in the well bore. The cementing device includes a tool body which has a front end and a rear end. The cementing device further includes at least one propulsion device which is attached to the front end and/or the rear end of the tool body and is adapted for being propelled by a fluid.

Classes IPC  ?

• E21B 33/136 - Corbeilles, p. ex. du type parapluie
• E21B 33/134 - Bouchons d'étrésillon
• E21B 23/10 - Outils spécialement adaptés à cet effet

Abrégé

There is disclosed a cementing device (10) for establishing a false bottom in a well bore for formation of a cement plug in the well bore. The cementing device (10) comprises a tool body (14) which has a front end (15) and a rear end (16). The cementing device (10) further comprises at least one propulsion device (24) which is attached to the front end (15) and/or the rear end (16) of the tool body (14) and is adapted for being propelled by a fluid.

Classes IPC  ?

• E21B 23/10 - Outils spécialement adaptés à cet effet
• E21B 33/134 - Bouchons d'étrésillon
• E21B 33/136 - Corbeilles, p. ex. du type parapluie

Abrégé

There is disclosed a cementing device (10) for establishing a false bottom in a well bore for formation of a cement plug in the well bore. The cementing device (10) comprises a tool body (14) which has a front end (15) and a rear end (16). The cementing device (10) further comprises at least one propulsion device (24) which is attached to the front end (15) and/or the rear end (16) of the tool body (14) and is adapted for being propelled by a fluid.

Classes IPC  ?

• E21B 23/10 - Outils spécialement adaptés à cet effet
• E21B 33/134 - Bouchons d'étrésillon
• E21B 33/136 - Corbeilles, p. ex. du type parapluie

Abrégé

A centralizer system and a method for centralizing a casing in a well bore before cementing of the casing in the well bore is disclosed, where the centralizer system comprises at least one centralizer which is adapted for mounting on the casing where the at least one centralizer comprises a receiving unit capable of receiving a wireless signal in form of a pressure wave and a wireless signal generator for generation and transmission of a wireless signal in form of a pressure wave which the receiving unit of the at least one centralizer is capable of receiving. The at least one centralizer is further configured such that the centralizer is activated for centralizing of the casing when the receiving unit receives a wireless signal transmitted by the signal generator.

Classes IPC  ?

• E21B 17/10 - Protecteurs contre l'usureDispositifs de centrage
• E21B 47/18 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p. ex. pour la diagraphie pendant le forage utilisant des ondes acoustiques à travers le fluide du puits

Abrégé

Disclosed is a landing sub for a wiper. The wiper is adapted for internal removal of drilling mud from a drill string during its pull-out from a borehole. The landing sub is mountable in the drill string, the landing sub includes a longitudinal bore for through-flow of drilling mud and a landing seat for receiving the lower end of the wiper during pumping of drilling mud through the drill string, and the landing seat is equipped with at least one duct or passage for through-flow of drilling mud past the lower end of the wiper during continued pumping of drilling mud in the drill string.

Classes IPC  ?

• E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
• E21B 23/02 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour verrouiller les outils ou autres éléments sur des supports ou dans des retraits entre sections adjacentes du tubage
• E21B 12/06 - Dispositifs de nettoyage mécaniques
• E21B 37/02 - Dispositifs de raclage spécialement adaptés à cet effet