Saudi Arabian Oil Company

Mohammad R Khunaizi

Rashid D Al Hajri

Fathi BuGubaia

Khalid Al Ghamdi

Khalid Al Subaie

Zayed Qahtani

Ali N Meshaikhis

Luay H Al-Awami

The disclosure describes hydrocarbon flowline corrosion inhibitor overpressure protection. Such a protection system includes a fluid flow pathway fluidically coupled to a corrosion inhibitor injection pump that injections corrosion inhibitor into a hydrocarbon carrying flowline. When the injection pump pressure exceeds a threshold flow pressure, the corrosion inhibitor is flowed through a first branch of the fluid flow pathway to relieve the excess pressure. The first branch is fluidically isolated from a second branch. When a rupture disc in the first branch fails, then the corrosion inhibitor is diverted to flow through the second branch and the first branch is isolated from the corrosion inhibitor flow.

Hydrocarbon flowline corrosion inhibitor overpressure protection

A valve system includes a bellows-type pressure relief valve and an attachment assembly. The bellows-type pressure relief valve includes a main housing defining a main chamber, an inlet opening, and an outlet opening, a bonnet housing defining a bonnet chamber and a bonnet vent in the bonnet housing, and a bellows structure defining a bellows chamber fluidly connected to the bonnet chamber. The attachment assembly is coupled to the bonnet vent to selectively plug the bonnet vent. The attachment assembly include a coupling to couple to the bonnet vent, a pressure sensor to detect a pressure in the bonnet chamber, and a vent structure including a vent valve to selectively open in response to an applied force or in response to the pressure sensor detecting a pressure in the bonnet chamber reaching a pressure threshold.

Bonnet vent attachment

Growing community of inventors

Dammam, Saudi Arabia

Mohammad R Khunaizi