EP 0314249 A2 19890503 - Pump off/gas lock motor controller for electrical submersible pumps.
Title (en)
Pump off/gas lock motor controller for electrical submersible pumps.
Title (de)
Motorsteuerung zum Abschalten der Pumpe bei Gasblockierung für elektrische Unterwasserpumpe.
Title (fr)
Commande d'un moteur pour l'arrêt d'une pompe lors d'un blocage par le gaz de pompes électriques submersibles.
Publication
Application
Priority
US 11446887 A 19871028
Abstract (en)
A pump off/gas lock motor controller for electrical submersible pumps (ESP) uses a flow rate or flow/no-flow sensor to shut down the ESP when it no longer is pumping fluid so that damage to the ESP is avoided.
IPC 1-7
IPC 8 full level
E21B 43/12 (2006.01); E21B 47/00 (2012.01); F04D 15/02 (2006.01)
CPC (source: EP US)
E21B 43/128 (2013.01 - EP US); E21B 47/008 (2020.05 - EP US); F04D 15/0227 (2013.01 - EP)
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
EP 0314249 A2 19890503; EP 0314249 A3 19900530; AU 2440088 A 19890504; DK 593888 A 19890429; DK 593888 D0 19881026; NO 884801 D0 19881027; NO 884801 L 19890502
DOCDB simple family (application)
EP 88202383 A 19881025; AU 2440088 A 19881027; DK 593888 A 19881026; NO 884801 A 19881027