1. ........P&ID, PROCESS AND SAFETY SYSTEMS
Nwogu, U.D.

2. ®Copyright Expro 2014 WELL FLOW MANAGEMENT
Ideal Situation
Global Training Course
P&ID, PROCESS AND SAFETY
SYSTEMS

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Content
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 P&ID
 Importance of P&ID
 Terms
 Process system
 Safety systems
 Feed back

4. P&ID
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What is a P&ID?
It is detailed schematic that we use to replicate a well test
setup
It is based on API RP 14C
A P&ID is a diagram in the process industry which shows the
piping of the process together with the installed equipment
and instrumentation.

5. Importance of P&ID
 To standardize process of best practices
 Gives exactly what to replicate on the well test area /field site
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Relief
Valve
Oil Diverter
Manifold
Relief
Valve
PI
PI
Steam Heat
Exchanger
Test Separator
Surge
Tank
Diverter
PI
TI
Relief
Relief
Relief
Relief
Relief
PI S
PI
S
S S S
CI
CI
Plant &
Fittings
Plant &
Fittings
Plant &
Fittings
Plant &
Fittings
Instrumentation
& Fittings
Sampling
points
Manifold
Valves &
Fittings
Importance of P&ID

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Terms
Global Training Course
 Undesirable event
 Cause(s)
 Effect and detectable abnormal condition
 Primary & secondary protection

8. 2 Common Undesirable Events in WT
Process System
 Over pressure
 Leak
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9. Causes of over pressure
Input > output
Restriction
Over flow or gas blow-by
Thermal expansion
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10. Effects of Over Pressure and Detectable
Abnormal Condition
 Sudden rupture
 Confusion and panic
 Leak of HC
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11. .
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Causes of Leaks
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 Corrosion
 Erosion
 Mechanical failure
 Excess temperature
 Rupture from over pressure
 Accidental damage from external forces

13. Effect of Leak and Detectable Abnormal
Condition
 Release of HC to environment
The detectable abnormal conditions are low pressure, backflow,
low level.
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14. Feed back
Comments
Questions!!!
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