METOCEAN PARAMETERS
FOR OFFSHORE
STRUCTURES
METOCEAN PARAMETERS
FOR OFFSHORE
STRUCTURES
NISARSAC, Ahmedabad
19 Nov 2015
NISARSAC, Ahmedabad
19 Nov 2015
IEOT-ONGC IEOT-ONGC
India’s only Energy Company in Fortune’s ‘World’s Most Admired’ List
ONGC - India’s energy anchorONGC - India’s energy anchor 2
Western Offshore
ONGC operates 265 fixed offshore platforms in western offshore, India
India’s only Energy Company in Fortune’s ‘World’s Most Admired’ List
MUMBAI HIGH
BASSEIN
NEELAM
BS-13 BS-16
BS-12
2080000
2090000
2100000
2110000
2120000
2130000
2140000
2150000
2160000
2170000
2180000
PannaField (JV)
MuktaField (JV)
NQO
BHN
ICW
SH
BPA
BPBB-192
B-45
B-46
B-48B-188
B-105
WO-24
WO-16WO-15
WO-5
B-121/119
D-33
B-15
B-157B-59 B-127
B-147B-149
B-55
VASAI EAST (BSE)
B-172B-178
B-179B-180
B-173AB-193
B-37
B-134
B-22
B-80
B-23AB-28
B-28A
26 " Gas trunk line to Ura
30" X 203 km Oil trunk line to U
36"
X 2
31 k
m G
as tr
unk
line
Bass
ein
to H
azira
42"
X 2
44 k
m G
as tr
unk
line
BPB
to H
azira
BHS
30" X 142 km SHP - HEERA Line
16" X 77 km
B-55 to SHG
28" X 78 km SH - BPB Line
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SBM
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BHE-1
14" OIL12" GAS
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Western Offshore, India
ONGC - India’s energy anchorONGC - India’s energy anchor
Water depth ranges from
55m to 90m
Designed based on API-RP-2A
Design life 25yrs
Requalification necessary forextended production
Change in design premisesaffects re-assessment
Western Offshore - Introduction
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ONGC - India’s energy anchorONGC - India’s energy anchor 5
Design of Offshore Structures
ONGC - India’s energy anchorONGC - India’s energy anchor
Extreme environmental conditions for 1, 10, 50and 100 year return period data. Wave Height and Wave Period Wind Current Tidal descriptions including highest and lowest
astronomical tides Storm Surge
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Met-Ocean Parameters
ONGC - India’s energy anchorONGC - India’s energy anchor 7
Wave exceedance data for fatigue analysis
Met-Ocean Parameters
Data for seasonal variation during the year.Waves (Joint distribution with direction & time
period)Wind Current Tidal variation & Storm Surge
Highest Profit‐Making Company in India
THANK YOU
ONGC - India’s energy anchorONGC - India’s energy anchor 9
ONGC - India’s energy anchorONGC - India’s energy anchor 10
ONGC - India’s energy anchorONGC - India’s energy anchor 11
ONGC - India’s energy anchorONGC - India’s energy anchor 12
ONGC - India’s energy anchorONGC - India’s energy anchor 13
Note: Wave directions are directions from which wave approaches the platform.