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Regulations
Kap. XI. § 60. Discharge of oily water to environment
Water containing oil has to be purified before discharge.
The technology applied has to be evaluated including chemical consumption.
Oil in water should be as low as possible and not exceed 30 mg/ltr.
(Some operators has internal requirement <15 ppm)
2007
PPM 0
20
40
60
PPM OIL GLOBAL
PPM OIL OSPAR
Discharge regulations
How Can Treat This Water Efficiently?
4
New Waste Water Treatment
Technology (R & D program launched in 2006)
DESIGN CRITERIA :
Easily applied technology
Easy installation of systems
Smaller footprint
Ability to handle diverse slop water
Automatic operation which reduces man power
No / minimum consumables
Low maintenance
Can be operated by rig personnel
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The Tangential Flow Filtration Efficiency
Water Monovalent
Ions
Multivalent
Ions
Dispersed
oil
Bacteria Suspended
solids
Membrane Process Characteristics
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Water Monovalent
Ions
Multivalent
Ions
Dispersed
oil
Bacteria Suspended
solids
Organic
content
Organic
content
Water Monovalent
Ions
Multivalent
Ions
Dispersed
oil
Bacteria Suspended
solids
Water Monovalent
Ions
Multivalent
Ions
For offshore and onshore treatment to remove oils and solids
2nd step for onshore treatment to remove heavy metal and organic content
Dispersed
oil
Bacteria Suspended
solids
Organic
content
Organic
content
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Start of Development (2006)
CONCENTRATE/
RETENTATE
TEST 1 SLOP:
83000 ppm
OIL
MEMBRANE
PERMEATE (CLEAN)
TEST 2 PERMEATE:
<0.2 ppm OIL
13 FOOT CONTAINER
Unit in Kistiansund, Norway
Water after treatment Water before the treatment
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In operation since June 2008
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The Offshore Unit
• Processing capacity of 6-8 m3/hour of waste water
• Footprint: 13 ft. Container
• This optimised layout was applied onto Norsok S-002,DNV 2.7.1.
In Container or as Skid based
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GEN 4 CONTAINER UNIT
• Simplification of mechanical and electrical hook up
• Purged enclosure enables one power source &
Variable frequency drive of motors
• Easier maintenance of circulation pumps
• Separate loop sections for backup
• Measures Oil / Solid / Water ratio % on slop feed
• Measures PPM OIW on outlet, linked to 3-vay valve
• Easier inspection of membrane sealings
• Automatically measures state of membranes after wash
Easy Maintenance - PLC Operation Panel
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RENAPURE-SW
INTERFACES:
• El.
• Rig Air
• Slop in
• Concentrate out
• Clean line to sea
• Water
SLOP
TANK
Feed from rig
Clean water to sea. oil < 3ppm
Installation Diagram
Concentrate to shore. 5 +/- %
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Tank to be
cleaned
Slop tank Feed
tank
Feed for pump
Vacuum cleaning system including
collection tank and discharge
system
Washing machines
Integrated system supplied by RT.
HP pump for
Washing Machines
To sea
RenaPure-SW
Slop
tank
Feed
tank
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Higher Capacity Option for Treating PW
Processing capacity 150-300 m3/hour of produced water
Foot print: 20 ft container
Depending on composition of water and requirements to end product NA may be required
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Unit including Nano
filtration to remove heavy
metals and organic
content.
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LATEST 12 MONTH EXPERIENCE
0,00
0,50
1,00
1,50
2,00
2,50
0
200
400
600
800
1000
1200
1400
1600
1800
2000
Kov.13 Bal.13 Geg.13 Bir.13 Lie.13 Rgp.13 Rgs.13 Spl.13 Lap.13 Grd.13 Sau.14 Vas.14
PPM
m3
Kov.13 Bal.13 Geg.13 Bir.13 Lie.13 Rgp.13 Rgs.13 Spl.13 Lap.13 Grd.13 Sau.14 Vas.14
M3 discharged 354 963 1052,9 1423,5 590 1224 906 1209 1146 1877 1741 1375
Quantity of backloaded water m3 5 43 195 40 0 12 26 36 30 27 31 18
Total treated m3 359 1006 1247,9 1463,5 590 1236 932 1245 1176 1904 1772 1393
Oil in water (PPM) 1,12 1,20 1,17 1,19 1,24 1,24 1,17 1,25 1,01 1,14 1,45 2,21
12 month rolling Discharge, treated, backloaded and PPM
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0
2000
4000
6000
8000
10000
12000
14000
16000Accumulated discharge (m3)
50,00%
55,00%
60,00%
65,00%
70,00%
75,00%
80,00%
85,00%
90,00%
95,00%
100,00%
Reduction of waste (%)
Start up
COSL Promotor
LATEST 12 MONTH EXPERIENCE
EXPERIENCE
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0
100
200
300
400
500
600
700
800
Alternative 1
Treatment on MG,
RenaPureSW
Alternative 2
Treatment onshore
Thermal
Treatment
Tank Boat
Trailer
Waste Water
Treatment
Supply Vessel
Reduction in CO2 emmisions: 675 MT
(one well,1000 m3/slop)
925 mt
250 mt
CO2 emission's worldwide development
0
100
200
300
400
500
600
700
800
Alternative 1
Treatment on MG
RenaPure-SW
Alternative 2
Treatment onshore
Thermal
Treatment
Tank Boat
Trailer
Waste Water
Treatment
Supply Vessel
Maersk Gallant 13/12 2011
Reduction in CO2 emmisions: 675 MT
925 mt
250 mt
CO2 emissions Cost saving 400 NOK / mt CO2
= 270 000.- NOK
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• RenaPure-SW, Slop Water Treatment, 4 – 8 m3/h
• RenaPure-PW, Produced Water Treatment, 150-200 m3/hr
• RenaPure-NA, Removal of HVY metals / organic content, 4-10 m3/hr
Competive edge, Renapure-SW
Compliance with the strictest regulations.
No consumable's for treatment
Easy to install / integrate
Small foot print: 13 ft. Container
Capacity , 130 m3. day. (ref. Deep Sea Atlantic)
Automatic operation (1 Operator pr. 24 hr.)
Oil in discharge typically < 1 ppm
0
20
40
60
80
100
Contamination(solids & oil)
Waste reduction
Concentrate
26
Thank You
Questions Please…
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