Carpinteria Field Waterflood

Carpinteria Field Carpinteria Field WaterfloodWaterflood

AgendaAgenda

• Objective• Phillips injection results• Geologic aspects of waterflood• Injection water supply

o Quantityo Quality

• Water treatment• Injection equipment

Waterflood ObjectiveWaterflood Objective

• OCS-P 0166

• Increase Oil Recovery by 10 to 15% of OOIP

• 16 – 20 MM bbls additional oil recovery

Carpinteria Offshore FieldCarpinteria Offshore Field

Waterflood ObjectiveWaterflood Objective

• OCS-P 0166

• Increase Oil Recovery by 10% of OOIP

• 16 – 20 MM bbls additional oil recovery

Waterflood ObjectiveWaterflood Objective

• OCS-P 0166

• Increase Oil Recovery by 10% of OOIP

• 16 – 20 MM bbls additional oil recovery

OOIP DataOOIP Data

Date Source OOIP(MM bbls)

Method

1968 Phillips 227181

VolumetricVolumetric

1998 PACOPS 157 Volumetric

166 Material Balance

2008 PACOPS 161-198 Decline Curve

The Phillips Water Disposal ProgramThe Phillips Water Disposal Program

• Pilot Disposal Test March – June 1973 217,846 bbls into Well A-32

• 5-year Limited SWD 1973 - 1978 12,000,000 bbls into 5 Wells 300,000 – 500,000 STB from 8 offset producers Severe channelingOil recovery was not maximized

• Enhanced oil recovery study 1983.

The Phillips Water Disposal ProgramThe Phillips Water Disposal Program

• Pilot Disposal Test March – June 1973 217,846 bbls into Well A-32

• 5-year Limited SWD 1973 - 1978 12,000,000 bbls into 5 Wells 300,000 – 500,000 STB from 8 offset producers Severe channelingOil recovery was not maximized

• Enhanced oil recovery study 1983.

The Phillips Water Disposal ProgramThe Phillips Water Disposal Program

• Pilot Disposal Test March – June 1973 217,846 bbls into Well A-32

• 5-year Limited SWD 1973 - 1978 12,000,000 bbls into 5 Wells 300,000 – 500,000 STB from 8 offset producers Severe channelingOil recovery was not maximized

• Enhanced oil recovery study 1983.

Repetto Producing SandsRepetto Producing Sands

Water Injection Wells, Top of F-1Water Injection Wells, Top of F-1

Water Injection Wells, Top of F-1Water Injection Wells, Top of F-1

Block MBlock M

Cross Section - Block MCross Section - Block M

South NorthA-2A-4

A-46ST1

A-1ST1

A-49WB1

A-43ST1

A-52ST1

F-1

F-3

F-2

F-4

Block – M Log ComparisonBlock – M Log ComparisonA-2 A-4 A-46ST1 A-52ST1

SWD System at La Conchita PlantSWD System at La Conchita Plant

SWDRetention Tank

Quintaplex Pumps

Mixing Tank

Media Filters

To 4” line

SWD Rates Discharge to OceanSWD Rates Discharge to Ocean(250 total days from 6/2007 to 2/2008)

0

20

40

60

80

100

120

1

Num

ber o

f Day

sN

umbe

r of D

ays

52

62

52

3

14

110

44%

21% 25%Num

ber o

f Day

s

Barrels per Day

Injection Water QualityInjection Water Quality

• Total Suspended Solids (TSS) Around 1 micron or less

• Critical Cations Calcium 66 ppm Barite unmeasurable Magnesium 80 ppm

• Other 0.5 ppm or less H2S 0.37 ppm dissolved O2

Water TreatmentWater Treatment

• Scale Inhibitor LSI: 0.4 – 1.53

• Biocide SRBs

• Corrosion Inhibitor Treat

• Oxygen scavenger TBD

Equipment Layout at Platform HoganEquipment Layout at Platform Hogan

Sampling point

ChemicalInjection

Centrifugalpump

Flowmeter

Low level

High level

VariableChoke Variable

Choke

4” line from La Conchita Plant

DisposalTube

Stabilizing Tank

Flow Control

Filter Bank

Pres

sure

gau

ge

Pressure gauge

Pressure gauge

Pressure gauge

Pressure gauge

Water Injection Wellhead and Manifold LayoutWater Injection Wellhead and Manifold Layout

3” Master Valve

3” Well Manifold

Kerotest valve

Pressure gauge

Sampling point

3” Actuated Wing Valve 3” Crown Valve

Flow Tee or Cross

3” Choke Valve

3” Manifold Isolation Valve (MIV) 3” Bowen Union

Continuous Electronic Pressure Monitor

Continuous ElectronicFlowmeter

61 MM

52 MM

EL

OPEX $1.5 MM/MoOil Price $75/bbl

68 MM52 MM

EL