EP 3128124 B1 20180926 - PUMPING SYSTEM AND METHOD
Title (en)
PUMPING SYSTEM AND METHOD
Title (de)
PUMPSYSTEM UND -VERFAHREN
Title (fr)
PROCÉDÉ ET SYSTÈME DE POMPAGE
Publication
Application
Priority
- US 2015043694 W 20150805
- US 201514956863 A 20151202
- US 201514956527 A 20151202
- US 201514956545 A 20151202
- US 201514956601 A 20151202
- US 201615162459 A 20160523
Abstract (en)
[origin: EP3128124A1] A system can include an actuator with a piston rod that displaces in response to pressure in the actuator, a seal assembly that seals about the piston rod and includes seal cartridges, each including a dynamic seal sealingly engaging the rod, and each including a static seal sealingly engaging a seal assembly housing, and a port providing communication between a housing exterior and a housing interior between adjacent static seals. A method can include preventing leakage from a well with a seal assembly about a piston rod of a hydraulic actuator, the seal assembly including seal cartridges, each including a dynamic seal that sealingly engages the rod, and each including a static seal that sealingly engages a seal assembly housing, enabling communication through a housing sidewall to a housing interior between adjacent static seals, and reciprocably displacing the rod in response to pressure variations in the actuator.
IPC 8 full level
E21B 43/12 (2006.01)
CPC (source: EP US)
E21B 43/126 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 16183125 A 20160805