September 2011

Positioned for Growth

2

Production, Reserves & Acreage Asset Base

Gas Production Oil Production

2005 2006 2007 20092008 2010

Long-Term Business Partners

49.6MMboe

Pro

babl

eP

rove

d

Res

erve

s

42.3MMboe

Pro

babl

e

Pro

ved

Res

erve

s

Pro

babl

e35.5MMboe

Pro

ved

Res

erve

s

Pro

babl

e

Country Basin BlockWorking

Interest (%)Area (Acres)

Chile Magallanes Fell 100 440,000

Chile Magallanes Tranquilo 29 1,643,000

Chile Magallanes Otway 25 1,480,000

Chile Magallanes Isla Norte (*) 60 130,000

Chile Magallanes Campanario (*) 50 143,000

Chile Magallanes Flamenco (*) 50 141,000

Argentina Austral Del Mosquito 100 120,000

Argentina Neuquén Cerro Doña Juana 100 19,600

Argentina Neuquén Loma Cortaderal 100 28,300

(*) Subject to Chile Government Approval

2011 (e)

3

People and Technology Capabilities

EXPERIENCED AND SUCCESSFUL TEAM

• Technical and operations focused company

• Objective to differentiate from peers by building highly competent oil and gas finding and development capability

• Core G&G team from Chevron San Jorge (600 + million barrels oil discovered in region and 25 + years working together) and other major companies (BP; YPF; TOTAL; ENAP; Petrobras)

• Team with experience in regional geology and operations

• Built to create opportunities and support future growth

• Good demographics with seasoned and young professionals

• All employees are shareholders

TECHNOLOGY

• 2 drilling rigs in operation

• 2 workover rigs in operation

• Gas treatment facilities

− Dew point plant Kimiri Aike (35 MM SCFD)

− Gas treatment facilities at Pampa Larga, Dicky, Santiago Norte and Monte Aymond

− Maximum gas delivery capacity: 78 MM SCFD (Kimiri Aike and Monte Aymond)

− Gathering system consists of more than 135 km of gas pipelines

• Oil production facilities

− More than 10 separation and storage facilities

− 2 oil treatment plants (Pampa Larga, Kimiri Aike)

San Antonio Drilling Rig

Kimiri Aike Dew Point Plant

Pampa Larga PlantSouthern Cross WO Rig 01

Petreven Drilling Rig

4

2011 Main Highlights

MAJOR STRATEGIC EXPANSION IN CHILE

‒ Successful bid for 3 key blocks on Tierra del Fuego

‒ Blocks are more oil prone than Fell block

‒ Opportunity to expand on existing platform in the region

STRONG FINANCIAL POSITION

‒ Proceeds from the Corporate Bond ($133MM)

‒ Sale of 10% of Chile business to LGI ($70MM)

‒ Agreed second sale of 10% of Chile business to LGI ($78MM)

‒ Estimated total cash on hand for acquisitions/capex of $220MM+

ON-GOING DRILLING SUCCESS ON FELL, ENCOURAGING SIGNS ON TRANQUILO

‒ New oil discovery in the Tobifera (Konawentru- x1) – Fell block

‒ Renoval –x1 in line with pre-drill prognosis (e.700BCF+) –Tranquilo block

‒ Preliminary seismic evaluation identified multiple potential structures – Otway block

FY 2011 ON-TRACK TO MEET PRODUCTION GUIDANCE

‒ After a slow 1H 2011, strong recovery in 2H 2011

‒ Current production is approximately 8,500 boe/d (35% oil)

5

Fell Block Development Steady Organic Growth

Successful Discoveries

Konawentru x-1: Oil (Tobifera)

Copihue x-1: Oil & Gas Field

Mte. Aymond 35: Gas

Munición Oeste x-2 (main reservoir w/o completion)

WO Bump Hill: Oil (Tobifera)

Production mix change towards oil

Appraisal & Development

Guanaco Field Appraisal Alakaluf Enhanced Oil Recovery

KEY

PROBABLE OIL

PROVED OIL

PROVED GAS

POSSIBLE GAS

PROBABLE GAS

PROSPECT

LEAD

POSSIBLE OIL

3D SEISMIC

WELL RESULT

OIL PRODUCER

GAS PRODUCER

NON-PRODUCTIVE

Unsuccessful Efforts

Nika Sur x-2: Gas + Water (inconclusive test)

New Discoveries not yet in production or under evaluation

Williche x-1 (rigless acid job pending)

Alakaluf Este x-1: Gas (Tobifera)

Mte. Aymond 36: Oil (Springhill)

Upcoming Wells

• 4 oil development;

• 3 exploratory oil and

• 1 exploratory gas

19.06 17.49

5.94 8.94

1.081.612.87

5.842.90

2.72

-5

1

7

13

19

25

31

37

1H 2010 1H 2011

$/bo

e

Roy., Sell, & Others G&A G&G OPEX EBITDA

Revenues$/boe 36.62

Revenues$/boe 31.85

6

Financial Results Performance

FINANCIAL HIGHLIGHTS SIGNIFICANTLY HIGHER PRODUCTION IN H2 2011

CONSOLIDATED NETBACKS PER BOE

5,000

5,500

6,000

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

Jan Feb Mar Apr May Jun Jul Agu

2010 2011

boe/

d

99.4

16.7 (33.4)

(8.7)

70.0

144.0

Initial cash Cash flow fromoperations

CAPEX Net borrowings LGIcontribution

Ending cash

CASH FLOW EVOLUTION (IN MILLION OF $)

In $'000 30-jun-10 30-jun-11

Revenues 39,627 41,765

Production Costs -19,337 -21,428

Gross Profit 20,290 20,337

CAPEX 34,285 33,728

Equity 95,634 165,484

Debt 56,591 166,160

Cash 8,526 143,961

7

Tranquilo & Otway Blocks High Impact Exploration

MARCO U_1

49

8A

6

3A

5

MANZANO _2

MANZANO

4

ZURDO _1

E SPERANZA_3

ESPERANZA_2

E SPERANZA_1

GALES

MORRO CHICO5

3

TRANQ UILO _1

SAN_JOSE_1

EL_SALTO_1

DIANA

MARCOU

RENOVAL x-1

DIANA_2

DIANA_1

TN_1

4

98

76 2A2

KERBER_1 / 2

ESPERANZA

S AN_ANTO NIO_1

KERBER

PATOS-1TRES PUENTES-1

LAS HOJAS-1VULCANO_1

PARRILLAR_1

OTWAY_1

MINA_RICA_4

MINA_RICA_3 MINA RICA-2/2A

MINA_RICA_1

COREY_4

COREY_3

COREY_2

COREY_1

PRAT 1

PONSOMBY_1

KON_AIKE_2

KON_AIKE_1

CHILENITA_1CHILENITA_2

TRES BRAZOS-1

LEÑADURA-1

CANELOS 1

EL GANSO 1

PECKET

P-6

P-3

P-4P-5

P-2PECKET 1

CABO NEGRO

GRIMAL_1

ARACELIS_3

ARACELIS_1

RIESCO

10 km

GALES

TRANQUILOBLOCK

OTWAYBLOCK

CHILE

ARGENTINA

KERBER

MARCOU

ESPERANZA

CHILENITA

ARACELIS-Pta. EUGENIA

RIO PESCADO

Total UMR: 1,570 BCF Av. CoS: 17%

Total UMR: 197 BCF Av. CoS: 24% Total UMR: 95 BCF

Av. CoS: 18%

Total UMR: 400+ BCF Av. CoS: 18%

Total UMR: 86 BCF Av. CoS: 18%

ESPERANZA ( Morro Chico )Total UMR: 700+ BCF

CoS: 28%ESPERANZA ( Loreto + El Salto )

Total UMR: 120+ BCF Av. CoS: 28%

Total UMR: 162 BCF Av. CoS: 17%

3D ESPERANZA: 93 km2

3D MARCOU: 70 km2

2D DIANA: 62 km

2D ISLA RIESCO: 175 km

3D CABO NEGRO: 270 km2

2D ESPERANZA-KERBER-GALES:316 km

RENOVAL x-1 WELL

Total Area: 12,613 Km2

2D Seismic: • Otway: 988.5 Km / Tranquilo: 1,428.3 Km

Total Wells: • Otway: 31 / Tranquilo: 23 (drilled before concession started for both)

Type of Contract: CEOP (Contrato Especial de Operacion Petrolera)

Consortium:• Otway: GeoPark 25%, Pluspetrol 25%, Wintershall 25%, IFC 12.5% and

Methanex 12.5%• Tranquilo: GeoPark 29%, Pluspetrol 29%, Wintershall 25% and Methanex 17%

Operator: GeoPark in both blocks

2011 UPDATE

2D seismic

OtwayTranquilo

82 % 60 %

3D Esperanza 100%

3D Marcou 100%

3D Cabo Negro 100 %

Depth 2,950m

Target Morro Chico Sands (Lower Tertiary); Gas

Resources 700BCF + (UMR.); CoS: 28%

RENOVAL X-1 WELL (ESPERANZA STRUCTURE)

Well drilled. Awaiting for completion Q4 2011

2012 PROGRAM OtwayTranquilo

• 1 well 1,700 m 2012 Q2• 1 well 1,600 m 2012 Q4• 1 well 700 m 2012 Q4

• 1 well 2,200 m 2012 Q2• 1 well 3,000 m 2012 Q2

Acquired 2D Seismic up to Sep 2011

Planned 2D Seismic to be acquiredin summer 2011/2012

8

Creating Opportunities Widening our Footprint

LG INTERNATIONAL STRATEGIC GROWTH PARTNERSHIP

LGI Partnership to build a diversified risk-balanced portfolio of upstream projects across Latam

• Side by side acquisitions (initially $100-500MM size)• GeoPark is General Manager of Partnership and Operator of acquired

projects• LGI contributes technical and financial strength• LGI and GeoPark are already partners in Chile and Tierra del Fuego

ATTRACTIVE PROJECT ACQUISITION PORTFOLIO

Multiple Latam projects identified, screened and prioritized

• Formed a team with management and technical staff devoted to growth initiatives

• Teamed-up with a strong financial partner like LGI• Looking for the right combination of value risk and reward• Proved and probable reserves, production revenues, development

opportunities and exploration potential• Company acquisitions, project buy-outs, farm-ins, earned interests

GEOPARK IS BUILT FOR GROWTH

Strategically positioned as a consolidator in Latam

• Successful bid for 3 key blocks on Tierra del Fuego ‒ Opportunity to expand on existing platform in the region‒ Blocks are more oil prone

• Experienced technical team to extract maximum value from assets• Leverage on proven and successful business model• Strong cash position for future Capex / acquisitions

9

Tierra del Fuego Acquisition Replicating Fell Model

CURRENT STATUS

• GeoPark and ENAP executed on September 12th three Participation Agreements, one for each block, and have jointly applied for the three CEOPs to be executed with the Government of Chile as soon as possible

• GeoPark expects to execute the CEOPs and start operations in the blocks during the first quarter of 2012

BlockSize

(km2) Commitments

Isla Norte 527 $16.3MM

Campanario 578 $41.5MM

Flamenco 572 $43.6MM

Total 1,677 $101.4MM (*)

Isla Norte

REFERENCES

Blocks Awarded to GeoPark

Block Awarded to Third Parties

(*) US$ 101.4 MM performance bond requested by the Chilean Government

TIERRA DEL FUEGO – ENAP PARTICIPATION AGREEMENTS

• Private bidding process conducted by ENAP over the past year

• GeoPark has been awarded participation and operatorship of 3 blocks; Campanario (50%), Flamenco (50%) and Isla Norte (60%)

• GeoPark will carry ENAP during the 1st 3-year exploration period

• GeoPark will share incremental production on these blocks above agreed base-line production (which is negligible)

• GeoPark believes these blocks are significantly more oil prone than the Fell block

A summary of the bids presented by GeoPark is shown in the table below

Campanario

Flamenco

San Sebastian

Largo Mercedes

Marazzi

10

LGI + GeoPark Strengthening the Strategic Alliance

MAIN ACHIEVEMENTS OF TRANSACTION

• Cements the LGI Alliance and sets the foundation for a promising long term acquisition partnership

• Increases GeoPark’s cash resources available for future capex/acquisitions

• Sets a valuation benchmark for GeoPark’s Chile business of $780MM

• Allows GeoPark to share the risk on the new Tierra del Fuego blocks

TRANSACTION DESCRIPTION

• GeoPark sold participation in Chile business to LGI:

‒ 10% interest in May 2011 for $70MM; ‒ 10% interest in September 2011 for $78MM (subject to Board

approval)

• Technical Services Agreement entered into by GeoPark in respect of the Sholkara well in Kazakhstan

− GeoPark will earn a 1% Net Profits Interest in Sholkara in the event of a successful development

− GeoPark no longer required to partially fund the Sholkhara well

• LGI to have approximately a 30% share in GeoPark’s Tierra del Fuego subsidiary

11

Balanced Growth Opportunities Investment Case

• Asset Base

− Large operated acreage position – approx. 4.2MM acres including thenew Tierra del Fuego blocks

− 49.6 MMboe 2P reserves (35% oil) and 157 MMboe of 3P reserves

− Current production of approximately 8,500 boe/d (35% oil)

• Capabilities

− Strong technical team – successful track record

− $200MM raised during the past 9 months without dilution (and another $78MM expected)

− Fully funded work program – 2 drilling rigs (25-30 new wells)

• Growth

− Stable organic growth coupled with high impact exploration opportunities and new project acquisitions

− LGI growth alliance

− Leverage on strategic and balanced partnerships

• Culture

− Partner of choice in region with record of excellence with environment and communities

− Committed long term shareholders

− Risk management

− Performance-driven/all employees are shareholders

GEOPARK – A PROVEN BUSINESS MODEL