OPC
Oilfield Production Consultants (OPC) Ltd.
Oilfield Production Consultants (OPC) USA, L.L.C.
Houston - London – Aberdeen - Doha
OPC is a consultancy providing technical and
operational support, and expertise to the
exploration and production business
9001:2008
Registration No. 43049
Company History
Founded 1987
Offices:
 Aberdeen (1997)
 Houston (2002)
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 London (1987)
Turnover £ millions
 Doha (2006)
OPC’s Staff and Associates have worked in over
50 countries around the world, for all the
majors and large independents
Key OPC Personnel
Piers Johnson, OPC’s Managing Director in London, is a Petroleum Engineer with over 29 years of
experience in the UK and international oil industry. He is a Chartered Engineer and a former Chairman
of the Society of Petroleum Engineers (SPE) London Section.
Consultant Services
Mark Tizard (Operations Director), Kasia Stefaniuk, Shobha Sharma and Ada Branfield in
London along with Alan Sleith and Stuart Hart in Aberdeen, Maribel Renteria in Houston and Scott
MacRae (Manager – Middle East) and Jacqui Dabu in Doha have over 55 years’ combined
experience in technical recruitment, consultant placements and contract management in the UK and
international oil and gas industry.
Projects and Studies
John Wright (Technical Director) supported by Dr. Ram Nutakki, a Reservoir Engineer with over 25
years of broad-based experience in reservoir engineering, petrophysics, well test analysis and
operations globally, Byron Johnson (Res. Eng.), Sarah Williams (Geoscience), James Blackman
(Geologist) and Mike Eastgate (Petroleum Production Engineer)
Bill Roberts, OPC USA’s President in Houston, has over 31 years of worldwide broad-based
experience in reservoir engineering, well test analysis and reservoir simulation and is supported by
Jeff Hargrove, an all around Petroleum Reservoir Engineer.
Training
John Austin is Manager of Training with 30 years of oil industry experience most recently as a
petroleum economist.
OPC ORGANIGRAM
Oilfield Production Consultants (OPC) Ltd.
Managing Director
Piers Johnson
EXECUTIVE BOARD
Technical Director
Operations Director
John Wright
Mark Tizard
PROJECTS & STUDIES
John Wright
Techincal Director
CONSULTANTS
Mark Tizard
Operations Director
IT & OFFICE SERVICES
Adrian Cahill
Office Manager
PROJECTS & STUDIES
Bill Roberts
President OPC USA LLC
14
Staff Members
5
Staff Members
9
Staff Members
+
Consultants
Consultants
6000 + Available
60 Working
President OPC USA LLC
Bill Roberts
TRAINING
John Austin
Manager
28 Staff Members
What does OPC do?

Projects & Studies: Well testing / well test interpretation,
reservoir surveillance on intelligent wells, integrated subsurface studies, reserves and asset evaluations.
KINGDOM, ECLIPSE & PETREL available in house.

Provides Consultants and staff: High calibre consultants
from OPC's extensive technical resources. Search for and
selection of permanent members of staff can be entertained

Training: well testing, reservoir engineering, reservoir
management and characterization; off the shelf or clienttailored courses in all E & P disciplines
What does OPC do well?

Retain clients

Look after and retain consultants

Retain in-house technical subsurface and production skills
and to support the consultants with technical expertise

Provide the right people for the right job

Offer a choice to our clients – in-house or in their offices or
on their sites
Partial list of Clients
Agip/ENI
Amerada Hess
Aminex
Anadarko
BG Group
BHP Billiton
BP
Cairn Energy
Centrica
CNR
CanArgo
ConocoPhillips
Devon
ExxonMobil
Europa Oil & Gas
Gaz de France
IPC/Lundin
JKX Oil & Gas
Maersk Oil & Gas
Murphy Oil
Noble Energy
Northern Petroleum
Premier Oil
Mariner Energy
Perenco
Petro-Canada
Qatar Petroleum
RasGas
Repsol
RWE-Dea
Shell
Sibir Energy
SIEP
StatoilHydro
Texaco
Total
Talisman Energy
Tethys Petroleum Ltd.
Tullow Oil
Countries where we have worked
Albania
Algeria
Angola
Argentina
Australia
Azerbaijan
Bolivia
Brazil
Brunei
Chile
China
Colombia
Congo
Denmark
Dubai
Ecuador
Egypt
France
Gabon
Georgia
Germany
Indonesia
Iran
Ireland
Italy
Japan
Kazakhstan
Korea
Kuwait
Libya
Malaysia
Malta
Namibia
Netherlands
Nigeria
Norway
Oman
Peru
Philippines
Poland
Portugal
Qatar
Romania
Russia
Saudi Arabia
South Africa
Spain
Sudan
Tajikistan
Tanzania
Thailand
Tunisia
Turkmenistan
U.K.
U.S.A.
Ukraine
Venezuela
Yemen
…..and others
Contract Positions Examples
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Well Test Engineer
Operations Geologist
Reservoir Engineer
Technical Assistant
Rigless Testing Engineer
Asset Manager
Cost Engineer
HSE Engineer
Operations Manager
Development Geologist
1 month
12 months
9 months
6 months
1 year
Short term
5 day project
2 years
7 years
2 weeks
Asia
Middle East
Aberdeen
Aberdeen
Africa
London
London
UK / Asia
FSU
USA
Reservoir Engineering
 Field development planning/reservoir management
 Reservoir simulation studies
 Material balance
 Well test analysis, planning and supervision
 Reservoir Surveillance with permanent DH gauges
 Phase behaviour/equation of state modelling
 Uncertainty analysis
 Reserves estimation
Reservoir Simulation
 Familiar with most commercial simulators
– Eclipse (in house)
– VIP (Landmark)
– CMG
– Merlin
– MoReS (Shell)
 Upscaling from geological models
– Petrel (in house)
– IRAP RMS
– Stratamodel
3D Geological Modeling and
Seismic Interpretation
 Extensive experience with Petrel and IRAP RMS
 Building complex 3D structural reservoir models
 Mapping of formation tops and thickness and developing
well to well correlations
 Reservoir facies and petrophysical property modelling
 Facies (object) modelling for complex heterogeneous
reservoirs such as fluvial channel reservoirs
 Detailed reservoir volumetrics by zones and segments
 Well planning of deviated, horizontal and multilateral wells
 Creating reservoir models for use in dynamic reservoir
simulation
 Stochastic modelling
 Seismic interpretation
 Seismo-stratigraphic interpretation
 Exploration, development and appraisal interpretation
Reservoir Simulation
 Extensive experience with ECLIPSE, and highly qualified staff
 Black-oil simulation
 Equation of state modelling
 Compositional simulation
 History matching and forecasts
 Modelling of horizontal wells and fractured reservoirs
 Modelling of hydrocarbon, CO2 miscible floods, and water and
steam floods.
 Modelling of gas condensate and tight gas reservoirs
 Upscaling of complex 3D geological models for simulation
 Conversions of data sets between simulators
Recent Projects
 Reservoir simulation of heterogeneous North Sea channel
reservoir evaluating multiple geological realisations
 Geological modelling / reservoir simulation deepwater GOM
 Reservoir study of large shallow Russian heavy oilfield
 Evaluation of gas storage project in North Sea
 Reservoir simulation and evaluation of Middle Eastern gas fields
 Reservoir simulation study of Indian oilfield
 Evaluation of Algerian oil and gas fields
 Reservoir simulation of Hungarian gas fields
 Evaluation of Tunisian oil and gas fields
 Update of reservoir simulation models of Libyan oilfields
 Geological modelling and reservoir simulation of Nigerian oilfields
 Reservoir engineering and AIM floatation for Russian assets
Software (In-house)
FROM NEOTEC
 WELLFLO & PIPEFLO (multiphase wellbore hydraulics
and pipelines software)
 FORGAS (Field wide gas production forecasting software)
FROM PETROLEUM EXPERTS

MBAL – Material Balance software
FROM WELL TEST SOLUTIONS LTD (UK)

PIE - Well test interpretation software
FROM OTHER VENDORS
 Eclipse & Petrel from Schlumberger, Kingdom suite
from SMT
Reserves Audits
OPC has undertaken reserves audits in respect of statutory and fiscal
reporting, floatations and funding. OPC can report to SEC, SPE,
Russian, Norwegian and other standards and is recognized as a
Competent Person by the London Stock Exchange
Reserves Audit Examples:
Client confidential

Independent Petroleum Engineer (IPE) report to support
development funding from a major European Bank
Client confidential

UK company with US assets : Competent Person’s Report for
AIM flotation
Client confidential

UK company with assets in Kazakhstan : Competent Person’s
Report in support of flotation or mezzanine financing
Training
Specialist technical courses offered include:
 Well Test Analysis (Basic and Advanced),
 Reservoir Engineering
 Reservoir Characterization
 Reservoir Surveillance
 Petroleum Economics & Risk Analysis
 Project Management
Integrated training packages for in-house teams
–
Covers all technical & commercial disciplines
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Coordinated work processes and information flows
–
Encourages project teams to operate more effectively
Contacting OPC
Consultants
Mark Tizard in London
Stuart Hart in Aberdeen
Rich Schoen in Houston
Scott MacRae in Qatar
london@opc.co.uk
aberdeen@opc.co.uk
houston@opc-usa.net
qatar@opc.co.uk
Projects and Studies
John Wright in London
Bill Roberts in Houston
london@opc.co.uk
houston@opc-usa.net
Training
John Austin in London
Bill Roberts in Houston
london@opc.co.uk
houston@opc-usa.net
Telephone
Websites
London: +44 (0) 20 7428 1111
Aberdeen: +44 (0) 1224 329 111
FAX: +44 (0) 20 7428 1122
FAX: +44 (0) 1224 329 112
Houston:
Qatar:
FAX: +1 713 243 8754
FAX: +974 495 4649
+1 713 973 2151
+974 495 4648
www.opc.co.uk
www.opc-usa.net