US 12,264,554 B2
Valve arrangement
Alan David Brodie, Abu Dhabi (AE); and Rylan Paul D'Souza, Abu Dhabi (AE)
Assigned to PETROLEUM TECHNOLOGY COMPANY AS, Stavanger (NO)
Appl. No. 17/623,728
Filed by PETROLEUM TECHNOLOGY COMPANY AS, Stavanger (NO)
PCT Filed Jun. 24, 2020, PCT No. PCT/NO2020/050177
§ 371(c)(1), (2) Date Dec. 29, 2021,
PCT Pub. No. WO2021/002757, PCT Pub. Date Jan. 7, 2021.
Claims priority of application No. 20190835 (NO), filed on Jul. 3, 2019.
Prior Publication US 2022/0170343 A1, Jun. 2, 2022
Int. Cl. E21B 34/02 (2006.01); F16K 31/12 (2006.01)
CPC E21B 34/02 (2013.01) [F16K 31/12 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A valve arrangement for a wellhead of a hydrocarbon well, the valve arrangement comprising:
a valve comprising a threaded connection configured to mount sealingly and removably, the valve in a port of the wellhead,
an actuator device configured to actuate the valve to move between a closed position and an open position, the actuator device comprising:
a housing having a through channel extending between a first end, at which the valve is mounted, and a second end, the housing comprising at least one first port extending through a sidewall of the housing and leading into the through channel,
an actuator rod movably arranged in the through channel and configured to open the valve by the actuator rod being movable between at least a first position and a second position,
a control device arranged to control the movement of the actuator rod,
wherein the through channel comprises a first part and a second part,
wherein a piston-cylinder arrangement is arranged in the second part of the through channel in a sealing manner,
wherein the first part of the through channel is delimited by the valve at one end and by the piston-cylinder arrangement at the other end,
wherein the at least one first port is a bleed off port and/or connectable to an external injection fluid source and it leads into the first part of the through channel, wherein the valve arrangement is configured such that:
when the valve is in the open position, there is fluid communication between the at least one first port and the wellhead, and
when the valve is in the closed position, the valve blocks flow of fluid between the wellhead and the at least one first port, and
wherein the valve is configured to move to the open position by a supply of pressurized fluid to the first part of the through channel.