1

2

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

5

The Tangential Flow Filtration Efficiency

Water Monovalent

Ions

Multivalent

Ions

Dispersed

oil

Bacteria Suspended

solids

Membrane Process Characteristics

6

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

7

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

8

In operation since June 2008

9

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

10

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

11

12

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 +/- %

13

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

14

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

15

Unit including Nano

filtration to remove heavy

metals and organic

content.

16

17

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

18

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

19

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…