Dear Prakash,
According to pre-commissioning report for multiple well CP system New Coated Oil Well
HRDH-355, Existing Bare Oil Wells HRDH-240 & HRDH-207 are protected as per SAES-X700.
As Per Pre-commissioning Report:
TR Rating
Operating Output
Operating Resistance
Max. Allowable Circuit Resistance (90% of
TR Rating).
Total Number of Anode (TA-4)
50V/50A
17.13V/37.50A
0.456 Ohms
0.90 Ohms
12TA-4 ( New AGB-003), 10TA-4 ( Existing AGB1) & 6TA-4 ( Existing AGB-2)
Current measurement at well casing:
Negative
Cable
F/L
Casing
Minimum Design
Current Require As
Per SAES-X-700
(Amps)
New Well HRDH355 (Coated Oil)
3.83
(+)1.83
5.66
1-3
Protected
Ex. Well HRDH207 ( Bare Oil)
13.34
(+)0.50
13.84
12-15
Protected
Ex. Well HRDH240 ( Bare Oil)
20.18
(-)6.78
13.40
12-15
Current (Amps)
Well / FL No.
Status
Protected
Recommendation:
.
All wells are protected and anode ground beds having enough anodes to deliver TR rated
current. Hence precommission report is accepted.
Regards
Mohamed Mahfouz
Engineering Manager (NACE-CP4)
Abdulla Fouad Impalloy Ltd. Co.
Office: (+966) 13 810 1945