Produced Water ProjectSan Juan Generating Station

ZeroNet Perspective

PNM Water Issues in the San Juan Basin…..

San Juan Generating Station (SJGS) consumes 22,000 acre-feet of water per year (467,600 BPD or 13,640 gpm).SJGS needs a reliable source(s) of water to operate.There are continuing political pressures to use less water in New Mexico.SJGS is a long-term energy production site – it will be there 25 years from today.PNM has negotiated short-term and long-term water contracts to ensure supply.Endangered species in the San Juan River will reduce the reliability of water supply.If SJGS uses less water through conservation and obtains alternative supplies (e.g. produced water), more water will be available for others in the San Juan Basin.

Project Benefits…..

Conserve river water for other beneficial uses in New Mexico.Reduce the diversion of water from the San Juan River for cooling at San Juan Generating Station.Enable the San Juan Generating Station to be more drought resistant.Reduce the volume of produced water that must be handled and injected by producers.Reduce produced water handling and injection costs.Establish an infrastructure to minimize produced water injection in the San Juan Basin.Establish area-wide opportunities to reduce produced water handling and injection costs.

San Juan Basin

UtahArizona

ColoradoNew Mexico

San Juan Basin

FruitlandPetroleumSystem

Farmington

New Mexico

Albuquerque

Santa Fe

Farmington

San Juan Basin

SJGS

20 miles 510 0

13W 7W 6W 5W 4W12W 11W 10W 9W 8W 3W14W15W16W

32N

31N

30N

29N

27N

28N

Township Grid

Produced Water Project – Base Map of Study Area

San Juan Generating Station

San Juan River

San Juan River

Anim

as R

iver

N

13W 7W 6W 5W 4W12W 11W 10W 9W 8W 3W14W15W16W

32N

31N

30N

29N

27N

28N

ColoradoNew Mexico

64 64

550

550

Farmington

Kirtland

Bloomfield

Aztec

SJGS

Produced Water Project –Extent of ProductionNew Mexico Oil Conservation Division, 2002

20 miles 510 0

Each circle represents a production well or well cluster

Fruitland Petroleum System

Total Produced Water = 61,775 BPD

N

San Juan River

San Juan Rive

r

Animas

Rive

r

Navajo Reservoir

San Juan C

ounty

Rio A

rriba County

Produced Water Daily Volume (BPD) – All ProducersHigh Volume Townships (highlighted blue)New Mexico Oil Conservation Division, 2002

20 miles 510 0

13W 7W 6W 5W 4W12W 11W 10W 9W 8W 3W14W15W16W

32N

31N

30N

29N

27N

28N

ColoradoNew Mexico

64

550

550

64

1,480 652 190 461 587 1,597 547 1,322 707 243 0

376 176 135 78 898 3,034 1,095 2,482 2,502 112 0

5221,058 740 97 249 629 553 671 679 108 1,227324 4,868

685701 229 116 283 149 289 120 25 15520246

203 279 152 777 343 73 475 58 107 55 70 00

307 228 155 1,034 38 130 415 123 64 45 1090 00

3,915182

0

Township Grid

Total Produced Water = 42,934 BPDHigh Volume Townships = 34,963 BPD

SJGS

SWD Injection Well

FarmingtonKirtland

Bloomfield

Aztec

N

San Juan River

San Juan Rive

r

Animas

Rive

r

Navajo Reservoir

San Juan C

ounty

Rio A

rriba County

Produced Water Project –Phases 1 & 2PNM – San Juan Generating Station

SJGS Produced Water/Project Scope/PRRC ZeroNet PW Presentation

San Juan Generating Station

Treated Water toGeneral Plant Use

ProducedWater

TreatmentSystem

Bloomfield AreaProduced Water

Produced WaterCollection &

Pre-Treatment

32-mile Pipeline

Close-In CBMProduced Water(Kirtland Area)

1,890 AF/yr1,170 gpm40,000 BPD

615 AF/yr380 gpm13,000 BPD

2,505 AF/yr1,550 gpm

53,000 BPD

3,760 AF/yr2,330 gpm

79,740 BPD

195 AF/yr120 gpm4,110 BPD

Waste Brine toEvap Ponds

ProcessWastewater

1,450 AF/yr900 gpm

30,850 BPD

Phase 1 Phase 2

Produced Water Project – Component Schematic – Phase 1PNM – San Juan Generating Station

SJGS Produced Water/Project Scope/PRRC ZeroNet PW Presentation

Pipeline

BHP

Praxair

Richardson

Dugan

Producers PNM

Treated Water toGeneral Plant Use

Reactor-ClarifierSludge to Scrubbers

Waste Brine to Evap Ponds

ProducedWater

TreatmentSystem

ProcessWastewater

11 miles

San Juan Generating Station

615 AF/yr380 gpm13,000 BPD

800 gpm

60 gpm

15 tpd

1,120 gpm

Produced Water Project – Component Schematic – Phase 2PNM – San Juan Generating Station

SJGS Produced Water/Project Scope/PRRC ZeroNet PW Presentation

Bloomfield AreaProduced Water

BurlingtonResources

PNM

Lift Station

Charge Pumps

Produced WaterCollection &

Pre-Treatment

ReclaimedOil (trucked)

Off-Spec Water toDisposal (trucked)

21 miles

To SJGS1,890 AF/yr1,170 gpm

40,000 BPD

Produced Water Project – Component Schematic – Phases 1 & 2PNM – San Juan Generating Station

Bloomfield AreaProduced Water

BurlingtonResources

PNM

Pipeline

Lift Station

Charge Pumps

Produced WaterCollection &

Pre-Treatment

BHP

Praxair

Richardson

Dugan

Producers PNM

SJG

S

Treated Water toGeneral Plant Use

Reactor-ClarifierSludge to Scrubbers

Waste Brine to Evap Ponds

ProducedWater

TreatmentSystem

ProcessWastewater

Phase 2Phase 1

ReclaimedOil (trucked)

Off-Spec Water toDisposal (trucked)

11 miles 21 miles

SJGS Produced Water/Project Scope/PRRC ZeroNet PW Presentation

McGrath SWD

Produced Water Daily Volume (BPD) – All ProducersHigh Volume Townships (highlighted blue)New Mexico Oil Conservation Division, 2002

20 miles 510 0

13W 7W 6W 5W 4W12W 11W 10W 9W 8W 3W14W15W16W

32N

31N

30N

29N

27N

28N

ColoradoNew Mexico

64

550

550

64

1,480 652 190 461 587 1,597 547 1,322 707 243 0

376 176 135 78 898 3,034 1,095 2,482 2,502 112 0

5221,058 740 97 249 629 553 671 679 108 1,227324 4,868

685701 229 116 283 149 289 120 25 15520246

203 279 152 777 343 73 475 58 107 55 70 00

307 228 155 1,034 38 130 415 123 64 45 1090 00

3,915182

0

Township Grid

Total Produced Water = 42,934 BPDHigh Volume Townships = 34,963 BPD

SJGS

SWD Injection Well

FarmingtonKirtland

Bloomfield

Aztec

McGrath SWD

N

San Juan River

San Juan Rive

r

Animas

Rive

r

Navajo Reservoir

San Juan C

ounty

Rio A

rriba County

CO2 Gas Line

Hart Canyon Line

Produced Water TreatmentProcess Schematics

ReceivingTank(s) API Oil-Water

SeparatorTransfer Tank

and Pump

HoldingTank(s)

Filter FeedPump

CartridgeFilter(s)

Skimmed OilProduced WaterReceiving

To InjectionWell Pump

SWD Flow SchematicSJGS Produced Water Reuse

Produced Water Pretreatment – Oil Removal – 01 San Juan Generating Station

O/W GravitySeparators(2-100%)

Walnut Shell FilterFeed Tank

Produced WaterReceiving Tanks (2)

EB Feeder Skimmed OilTank

B/W from WalnutShell Filter

40,000 BPDProducedWater

Skimmed Oil

Sludge

Rinse from WalnutShell Filter

SkimmedOil

AETurb

AECond

DP

Walnut Shell Filters(2-100%, 6.0’D)

BackwashHold Tank

BackwashTo Produced

WaterReceiving

Tanks

To Off-SpecHold Tank

To EqualizationBasin

From Walnut ShellFilter Tranfer Tank

Rinse to Walnut ShellFilter Feed Tank

Produced Water Pretreatment – Oil Removal – 02 San Juan Generating Station

Produced Water Pretreatment – Oil Removal – 03 San Juan Generating Station

From WalnutShellFilters

Equalization Basin

Off-Spec WaterHold Tank

Off-Spec WaterWaste Tank

Blend

TruckUnloadingTo OffsiteWaste

To PipelineCharge Pumps

Off-SpecFrom WalnutShellFilters

AETurb

AECond

Record& Alarm

HERO System – Process SchematicSan Juan Generating Station

Degassifier

Ca(OH)2

Na2CO3

Coagulant Aide

H2SO4 NaOCl

Vent

Air

Reactor-Clarifier& Thickener

Weak-Acid CationExchanger (WAC)

Backwash & Spent Regenerant

ThickenedSludge toScrubbers

NaOH

Reverse Osmosis

Permeate to Reuse

Reject to Evaporators

NaHSO3

ProducedWater

Permeate to FilterBW & WAC Regen

Ove

rflow

Wet Surface Air Cooler