Fluid handling – Systems – Dividing into parallel flow paths with recombining
Reexamination Certificate
2011-03-15
2011-03-15
Hepperle, Stephen (Department: 3753)
Fluid handling
Systems
Dividing into parallel flow paths with recombining
C137S599010, C137S870000, C137S883000
Reexamination Certificate
active
07905251
ABSTRACT:
A high integrity protection system (HIPS) for protection of a pipe downstream of a wellhead includes an inlet connected to the wellhead; outlet connected to the downstream pipe; two sets of two series-connected surface safety valves (SSVs) in fluid communication with the inlet and outlet, the sets being in parallel fluid flow relation to each other, either one or both of the sets of SSVs operable as a flowpath for fluids entering the inlet and passing through the outlet to the downstream pipe; two vent control valves (VCVs), each connected to piping intermediate one set of series-connected SSVs, the VCVs being in fluid communication with a vent line, whereby, upon opening of a VCV, process pressure between the two SSVs is vented; a signal-generating safety logic solver, in accordance with preprogrammed safety and operational protocols; and pressure sensing transmitters attached to piping upstream of the HIPS outlet.
REFERENCES:
patent: 1246803 (1917-11-01), Doti
patent: 4521221 (1985-06-01), Richter et al.
patent: 4848393 (1989-07-01), West
patent: 5730166 (1998-03-01), Ackerley et al.
patent: 6090294 (2000-07-01), Teran
patent: 6739804 (2004-05-01), Haun
patent: 7478012 (2009-01-01), Tewes et al.
patent: 2002/0145515 (2002-10-01), Snowbarger et al.
patent: 2004/0093173 (2004-05-01), Essam
patent: 2005/0199286 (2005-09-01), Appleford et al.
patent: 2006/0150640 (2006-07-01), Bishop
patent: 2006/0219299 (2006-10-01), Snowbarger
patent: 2006/0220844 (2006-10-01), Flanders
International Search Report for PCT/US07/24924, mailed May 29, 2008.
IPRP for PCT/US07/24924, mailed Aug. 4, 2009.
Abelman ,Frayne & Schwab
Hepperle Stephen
McCalister William
Saudi Arabian Oil Company
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