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

6

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.