Shutdown in process plant vesus subsea centrifugal pumping

[dangnm]

In case of shutdown of the process plant what type of safeguards shall be applied/used on subsea centrifugal pump installed at well head ?

How is the impact on the well until the pumping stops?

Thanks.

 

[ICman]

I'm having a hard time understanding your question, and I've worked in process plants and offshore production.

I assume you are shutting down the subsea pump upon a plant ESD, to stop the feed. However, there is usually a valve on the discharge of the pump that is closed, which should almost immediately provide isolation.

The pump should also have a bypass if it cannot withstand the downstream pressure.

As far as I know, there isn't any "impact" on the well until AFTER the pump stops. Then, it might be difficult or impossible to start the well flowing again.

Maybe if you re-worded your question, I might be able to answer it.