Global Patent Index - EP 0314249 A3

EP 0314249 A3 19900530 - PUMP OFF/GAS LOCK MOTOR CONTROLLER FOR ELECTRICAL SUBMERSIBLE PUMPS

Title (en)

PUMP OFF/GAS LOCK MOTOR CONTROLLER FOR ELECTRICAL SUBMERSIBLE PUMPS

Publication

EP 0314249 A3 19900530 (EN)

Application

EP 88202383 A 19881025

Priority

US 11446887 A 19871028

Abstract (en)

[origin: EP0314249A2] 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

H02P 3/00; F04D 9/00

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)

Citation (search report)

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