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The Use of Modern Technology in the

Ceiba Field and Okume Complex

Hess Equatorial Guinea, Inc.Presented by: Mike Guerra, Operations Manager 

November 6, 2008

NOT AN OFFICIAL UNCTAD RECORD

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November 6, 2008 Hess Equatorial Guinea, Inc.

Ceiba Field – General Layout

C4

750m WD

C5

800m WD

C3

660m WD

C1

700m WD

C2725m WDCC

775m WD

RSS

90m WD

•~7 km

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Ceiba Field – Framo Subsea Multiphase Pumps

Purpose of the Pump:• provides pressure boost to assist with displacementof well fluids (oil, water & gas) to the FPSO.

• maximum pressure differential is 45 bar, maximum

volume throughput for a Phase II skid is 38,000 bfpd.

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Ceiba Field – Framo Subsea Multiphase Pumps

Phase II Multiphase PumpTypical Phase II Pump Skid

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Ceiba Field – Framo Subsea Multiphase Pumps

C26

C25

W/O

C24

C22

C21

CCPUMP

C1 CLUSTER

PUMPC1

PUMP

PUMP

C2

C7

C CLUSTER

C4 CLUSTER

C2 CLUSTER

C3 CLUSTER

C5 CLUSTER

C8

C5

C10

C1

C4

C4

C3

C19 ST2

C5PUMP

C13

C31

C-33

C-34

C30

C36

C38

C-35

Single Pump Skid

Dual Pump Skid - Two Pumps

Dual Pump Skid - One Pump

Layout includes –• twin pumps (Phase II) at C1, C5, CC

with a December 2003 startup

• single pump (Phase I) at C3, C4

with a October 2002 startup

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Ceiba Field – FRIEND (Framo Interactive Enabling Diagnostics)

Internet

ServiceProvider 

FramoEngineer Sandsli

HessEngineer Bata/Hou.

Subsea Pump Stations

►Condition monitoring through real-time streaming of data

►24hr, 7 days a week coverage.

► Allows for proactive maintenance and improved pump operations

►Communication functionality, documents and status reports

►Remote expert analysis and online advice

►Reduced operating cost & increased oil production

FRIEND

Portal

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Ceiba Field – Framo: FRIEND Support Room in Norway

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November 6, 2008 Hess Equatorial Guinea, Inc.

Ceiba Field – Flowline Gas Lift

C-19 Gas Inj

C-22 Gas Inj

Ceiba Flowline Gas Lift

- provides 22 mmcfg/d of gas lift at 4 clusters.- provides injection of gas for future use.- assists flow when Framo MPP fails.- reduced head gives Framo MPPs less wear.

- reduced suction pressure means more reserves.

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November 6, 2008 Hess Equatorial Guinea, Inc.

Ceiba Field – Flowline Gas Lift

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November 6, 2008 Hess Equatorial Guinea, Inc.

Ceiba Field – Subsea Tree Installation on Wire

Subsea tree resting on deck

of intervention vessel

Subsea tree as it is lowered via crane into the sea

• less time spent means $3 million savings• eliminates the requirement to pull and rerun

the marine riser, an inherently risky operation

Lowering of the subsea tree on wire instead ofrunning on drillpipe accomplishes:

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November 6, 2008 Hess Equatorial Guinea, Inc.

Okume Complex

Okume Complex:

• discovered in May 2001, located within the Rio Muni Basin• Ceiba FPSO is 24 km from Okume Complex central facility• water depth ranges 50 m to 650 m• field is about 190 km2 in size

Field Layout:

• 2ea. mini-Tension Leg Platforms (TLP)• at Okume and Oveng fields

• production & water injection• all dry tree• 3ea. fixed wellhead platforms at Elon

• A-WHP, water injection (WI)• B-WHP, production & WI• D-WHP, production• all dry tree

• crude oil export to Ceiba FPSO

Sendje CeibaFPSO

Mini-TLP

Satellite 1

Central

Processing

Facility

Satellite 2

Satellite 3CeibaCeibaOkumeOkume

EbanoEbanoOvengOveng

ElonElon

Mini-TLP

Ok C l L t

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November 6, 2008 Hess Equatorial Guinea, Inc.

Okume Complex - Layout

F E  A B&C

DSendje Ceiba,

FPSO

Ok C l T i Mi i T i L Pl tf (TLP)

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November 6, 2008 Hess Equatorial Guinea, Inc.

Okume Complex, Twin Mini-Tension Leg Platforms (TLP)

Tension Leg Platforms (Oveng, Okume) aboard dry tow vessel arrive in Equatorial Guinea.

• TLP floats under tension while fastened to the seafloor via steel tendons.• smaller footprint, lighter weight, faster construction time means less cost.• riser tensioning system allows for dry tree installation, reduced cost versus subsea.

• tender assist drilling rig versus semisubmersible means less cost.

Ok me Comple Tender Assist Drilling Rig ne t to Ok me TLP

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November 6, 2008 Hess Equatorial Guinea, Inc.

Okume Complex – Tender Assist Drilling Rig next to Okume TLP

Okume Complex ‘SMART’ Well Design

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November 6, 2008 Hess Equatorial Guinea, Inc.

Okume Complex – SMART Well Design

Oil Producing

Zone ‘A’

Oil ProducingZone ‘B’

“SMART’ Well Design:• provides isolation between multiple pay zones• allows individual zone testing

• allows either zone to be isolated• allows downhole choking on both zones

Downhole manipulation is accomplished

via hydraulics through control lineslocated at the wellhead.

Hess has successfully manipulated adownhole control valve via ROV onCeiba subsea well C-33.

Okume Complex and Ceiba Field

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November 6, 2008 Hess Equatorial Guinea, Inc.

Okume Complex and Ceiba Field

other operations and projects driven by technology

• at Okume• water injection (125 kbd) helps to sustain reservoir pressureand insure maximum reserve recovery.

• a water-alternating-gas project will start soon with theobjective of increasing sweep efficiency and increasing the

utilization of associated gas production.• gas compression is used to provide gas lift gas to individual

producing wells including those on and both TLPs.

• at Ceiba• water injection (120 kbd) helps to sustain reservoir pressure

and insure maximum reserve recovery.