EP 2666096 A1 20131127 - WELLHEAD HIPS WITH AUTOMATIC TESTING AND SELF-DIAGNOSTICS
Title (en)
WELLHEAD HIPS WITH AUTOMATIC TESTING AND SELF-DIAGNOSTICS
Title (de)
BOHRLOCHKOPFSTANGEN MIT AUTOMATISCHER PRÜFUNG UND SELBSTDIAGNOSE
Title (fr)
SYSTÈME HIPS POUR TÊTE DE PUITS AVEC TEST AUTOMATIQUE ET AUTODIAGNOSTIC
Publication
Application
Priority
- US 201161434051 P 20110119
- US 2012021856 W 20120119
Abstract (en)
[origin: WO2012100044A1] A method for diagnostics of a high integrity protection system (HIPS) for protection of a pipeline downstream of a wellhead includes: monitoring for initiation of an automatic trip or manual safety shutdown or full shut-off test; determining the process safety time (PST) that elapses between the time at which the upstream pressure reached the trip setpoint and the time at which the upstream pressure reaches the maximum allowable piping pressure (MAPP) of the downstream pipeline; and verifying that the safety critical isolation valves stroked to the fully closed position within ½ PST and that the downstream pressure did not exceed the MAPP. If the verification is successful, no action is required, whereas if the verification shows that either of those parameters are not met, then the HIPS signals an alarm to operators, and in the case of a manual safety shutdown or full shut-off test, resets the pressure trip setpoint to a lower level.
IPC 8 full level
G06F 15/00 (2006.01)
CPC (source: EP)
E21B 34/06 (2013.01); E21B 43/00 (2013.01)
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)
WO 2012100044 A1 20120726; BR 112013018250 A2 20161108; CA 2823258 A1 20120726; CA 2823258 C 20160322; CN 103493033 A 20140101; CN 103493033 B 20160316; EA 022908 B1 20160331; EA 201391058 A1 20140130; EP 2666096 A1 20131127; EP 2666096 A4 20170802; MX 2013008445 A 20131206
DOCDB simple family (application)
US 2012021856 W 20120119; BR 112013018250 A 20120119; CA 2823258 A 20120119; CN 201280005883 A 20120119; EA 201391058 A 20120119; EP 12736989 A 20120119; MX 2013008445 A 20120119