This document provides an overview of an emergency shut down (ESD) system. It outlines the objectives of understanding the ESD function, layout, and components. The ESD uses hydraulic actuators located on flow valves and surface safety valves to close quickly in an emergency. It must be used when well pressure is over 5,000 psi, H2S is present, or during high flowrate tests. The ESD panel includes hydraulic pumps, tanks, valves and pilots to activate valve closure from remote stations if pressure increases dangerously.

1. ESD
FTC - SWT
9/30/2022
Emergency Shut Down
system

2. ESD
FTC - SWT
9/30/2022
Contents:
•Layout
•Hydraulic actuator
•POM rule
•Description
•Hi & Lo Pilots
•References

3. ESD
FTC - SWT
9/30/2022
Lecture Objectives,
by the end of this lecture, YOU should be
able to:
- Explain the function of the ESD
- Locate the ESD stations
- Understand the ESD layout (oil & air
circuits)
- List when an ESD is compulsory
To look at “esd” animation

4. ESD
FTC - SWT
9/30/2022
• Close quickly
well in
emergency
(less than 10
sec.)
• allows a flow
line valve to be
safely closed
from a remote
station or from
the ESD

5. ESD
FTC - SWT
9/30/2022
Actuato
r
Located on the
flowline:
• Flow valve of
Flowhead
•Surface Safety Valve
Hydraulic
actuator
Valve
body

6. ESD
FTC - SWT
9/30/2022
Surface Safety
Valve
FlowHea
d
“Fail-safe”
valves, equipped
with an Hydraulic
actuator,
connected to the
ESD panel.

7. ESD
FTC - SWT
9/30/2022
When
to
use?
POM

8. ESD
FTC - SWT
9/30/2022
ESD mandatory when:
• WHP > 5000 psi
• H2S present
• High Flowrate tests
- Gas > 30 MMSCFD
- Oil > 8000 BPD
ESD recommended on all well test
operations.

9. ESD
FTC - SWT
9/30/2022
Layo
ut

10. ESD
FTC - SWT
9/30/2022
Hydraulic valves:
Actuator on the flow valve or/and SSV independent
on the flowline. Hydraulic oil maximum circuit
pressure: 6000 psi (normal operating oil
pressure= 1500 to 3000 psi)
ESD panel:
Hydraulic pump
Hydraulic oil tank
Interface valve
Check valve
Air spare vessel (old
model)
Quick exhaust valve
Reset valve
Bypass valve
Pilots Lo / Hi (around 30psi)
Stations ESD (around 30psi)

11. ESD
FTC - SWT
9/30/2022
Station
s
Located:
• separator
(mandatory)
• safe area
(mandatory)
• rig floor
• near Labcabin, …
Danger: Station
activated

12. ESD
FTC - SWT
9/30/2022
Pilots
Basically located:
• Hi-pilot,
downstream choke
manifold, to protect
low pressure
equipment.
• Lo-pilot, upstream
choke manifold, to
protect against a line
rupture.
Pressure increasing: Hi-pilot
activated

13. ESD
FTC - SWT
9/30/2022
Hi-Pilot & Lo-Pilot principle

14. ESD
FTC - SWT
9/30/2022
ESD-BB (Control panel / FTC north)

15. ESD
FTC - SWT
9/30/2022
References:
. On Line Training
. Animation “esd”
. InTouch: Technical Data Sheet
& Maintenance manual

16. ESD
FTC - SWT
9/30/2022
Emergency Shut Down
system
The End