Consultant, Field Development Planning.

DONALD A. TWADDLE, P. Geo.,

Over the last several years I have acted as a player/manager in field development planning, field rehabilitation, drilling, facilities renewal and reserves evaluation in teams that include everyone from geoscientists and reservoir engineers through operations and construction engineers. I continue being hands-on as a static modeller and petrophysicist, retaining a very high level of technical competency.

I can offer peer review, advisory and consulting services regarding static modelling, field development planning, reservoir management and reserves evaluation. I can advise on and participate in project planning and management for integrated projects ranging from appraisal through construction.

RELATED EXPERIENCE

INDEPENDENT GEOSCIENCE & FIELD DEVELOPMENT CONSULTANT April 2014 – Present

Geoscience advisor and team leader for TBM in Oskemen, Kazakhstan December 2015- December 2017

Field Development and reservoir management of the Greater Burgan field at the Kuwait Oil Company -- April 2014 to September 2015

GEOSCIENCE DISCIPLINE LEAD MID EAST January 2013 – April 2014

Bakerhughes Reservoir Services

Building geoscience capabilities in a new consulting branch of Bakerhughes RS.

Geoscience lead in a very large fast track project to evaluate the onshore assets for Abu Dhabi to establish equity value for a KNOC.

Recruiting and staff development for geosciences and engineering

GEOSCIENCE ADVISOR November 2011 – December 2012 Bakerhughes, Gaffney Cline & Associates, UK

Evaluation of reserves, resources and exploration prospects in West Africa, Mideast, Kazakhstan and the North Sea for portfolio management and company valuation.

SUBSURFACE MANAGER January 2011 – September 2011

Panoro Energy, Congo

Seconded into SNPC (national oil company of Congo) to manage the development of substantial onshore reserves operated by SNPC, wherein Panoro had 20% working interest. Responsibilities included:

oDirecting a field development team to drill a large number of wells over a 5 to 10 year project. Building alternative 3d models for scenario development.

oDevelopment of the SNPC staff management systems and processes.

The working language was French

WELL EXECUTION COORDINATOR November 2008 – January 2011

Brunei Shell Petroleum

Team leader of an integrated operations/execution team to drill 140+ infill production and water injection wells for the Champion field offshore Brunei. Responsible to ensure that all Subsurface HSSE critical items were addressed and that proper HAZID, HAZOP and SIMOPS were carried out. Budget holder for $300+ million per year.

Optimised the subsurface locations and reduced the number of platforms visited to improve the economics of the project.

Developed rock type and effective porosity models in Petrel & maintained a 3d Model for peer review purposes.

PRINCIPAL GEOSCIENTIST February 2005 – November 2008

Sonangol Pesquise e Produção, Angola (Initially contracted through Schlumberger)

Deputy project manager for infill drilling and field rehabilitation valued at more than $1 billion. Responsible to ensure that all HSSE critical items were addressed. Initiated a Moduspec inspection that resulted in 3 months in dry dock for the rig. This saved considerable lost time in the project.

Advisor for the takeover of operatorship of 130,000 BOPD production from Total and Chevron including more than 26 producing fields.

Evaluation of exploration prospects to take working interest in Libya, Nigeria, Angola, Gabon, Congo and Australia.

Evaluation of the feasibility for development of a super-giant heavy oil field in Iraq. Sonangol has subsequently been successful in obtaining a service agreement.

Mentoring and training of Sonangol P&P petroleum professionals at all levels.

Resourcing of Senior Geoscience Staff

Design of yearly and 5 year plans for field development and studies

Principal development geologist for 5 producing fields ( 80,000+ BOPD)

Static Modelling using Petrel and GeoFrame.

SENIOR PRODUCTION GEOLOGIST January 2003 – February 2005

Petroleum Development Oman

Co-ordinator for studies of a major clastic heavy oil field to determine the viability of water flood and EOR and to provide an FDP. Provided geological back-up for the sector modelling and monitored and reviewed geology provided by Shell consulting groups. These studies involved in-house teams and Shell teams and outside consultants in Aberdeen. Successfully passed VAR2.

Focal point for Al Khlata reservoir geology for the PDO Study Centre.

Deputy Team Leader for the Marmul fields Studies Team.

Peer reviewed other studies and projects within PDO -- both clastic and carbonate.

Mentoring of Junior, Intermediate and Senior Geoscientists for all types of fields within Oman, including fractured carbonates with light oil, and the heavier oils in the south in clastic reservoirs.

Constructed static models for dynamic modelling using Petrel and Seisworks.

PRINCIPAL GEOSCIENTIST, PROJECT MANAGER May 2001 – December 2002 Schlumberger Data & Consulting Services, Angola

Project Manager and Geologist/Modeller for Subsurface Studies, FDP and Operations for the development of a marginal field offshore Angola for Sonangol P&P. During the development extensive use was made of attribute analyses of the seismic data and near real time updates of the predictive simulation model, including multiple realisations. Did interference tests to determine communication in the initial production stages of the reservoir.

Interim Manager of Data and Consulting Services for West and South Africa, May 2001 – October 2001

Interim Manager of Data Services for West and South Africa. May 2001 – January 2002

Startup Manager of a joint venture for data services with Sonangol DPP, the concessionaire in Angola May 2001 – Jan 2002

Manager and business development for Consulting Services in Angola.

Provided Senior Reservoir Engineering (Simulation and field development ) consultants to Total and Sonangol P&P. Negotiated 2 contracts with Sonangol and 1 with Total to allow this.

Provided design for the training program for the Subsurface Group of Sonangol P&P

PRINCIPAL GEOSCIENTIST May 1997 - May 2001 Schlumberger Holditch-DONALD A. TWADDLE, P. Geo.,

19bis Lann Mané, 56330 Camors, France

tel.: +33 (0-689-****** (Roaming Cell)

+33 (0-297-****** ( Home )

E-mail: adowqq@r.postjobfree.com

Over the last several years I have acted as a player/manager in field development planning, field rehabilitation, drilling, facilities renewal and reserves evaluation in teams that include everyone from geoscientists and reservoir engineers through operations and construction engineers. I continue being hands-on as a static modeller and petrophysicist, retaining a very high level of technical competency.

I can offer peer review, advisory and consulting services regarding static modelling, field development planning, reservoir management and reserves evaluation. I can advise on and participate in project planning and management for integrated projects ranging from appraisal through construction.

RELATED EXPERIENCE

INDEPENDENT GEOSCIENCE & FIELD DEVELOPMENT CONSULTANT April 2014 – Present

• Geoscience advisor and team leader for TBM in Oskemen, Kazakhstan December 2015- December 2017

• Field Development and reservoir management of the Greater Burgan field at the Kuwait Oil Company -- April 2014 to September 2015

GEOSCIENCE DISCIPLINE LEAD MID EAST January 2013 – April 2014

Bakerhughes Reservoir Services

• Building geoscience capabilities in a new consulting branch of Bakerhughes RS.

• Geoscience lead in a very large fast track project to evaluate the onshore assets for Abu Dhabi to establish equity value for a KNOC.

• Recruiting and staff development for geosciences and engineering

GEOSCIENCE ADVISOR November 2011 – December 2012 Bakerhughes, Gaffney Cline & Associates, UK

• Evaluation of reserves, resources and exploration prospects in West Africa, Mideast, Kazakhstan and the North Sea for portfolio management and company valuation.

SUBSURFACE MANAGER January 2011 – September 2011

Panoro Energy, Congo

• Seconded into SNPC (national oil company of Congo) to manage the development of substantial onshore reserves operated by SNPC, wherein Panoro had 20% working interest. Responsibilities included:

o Directing a field development team to drill a large number of wells over a 5 to 10 year project. Building alternative 3d models for scenario development.

o Development of the SNPC staff management systems and processes.

• The working language was French

WELL EXECUTION COORDINATOR November 2008 – January 2011

Brunei Shell Petroleum

• Team leader of an integrated operations/execution team to drill 140+ infill production and water injection wells for the Champion field offshore Brunei. Responsible to ensure that all Subsurface HSSE critical items were addressed and that proper HAZID, HAZOP and SIMOPS were carried out. Budget holder for $300+ million per year.

• Optimised the subsurface locations and reduced the number of platforms visited to improve the economics of the project.

• Developed rock type and effective porosity models in Petrel & maintained a 3d Model for peer review purposes.

PRINCIPAL GEOSCIENTIST February 2005 – November 2008

Sonangol Pesquise e Produção, Angola (Initially contracted through Schlumberger)

• Deputy project manager for infill drilling and field rehabilitation valued at more than $1 billion. Responsible to ensure that all HSSE critical items were addressed. Initiated a Moduspec inspection that resulted in 3 months in dry dock for the rig. This saved considerable lost time in the project.

• Advisor for the takeover of operatorship of 130,000 BOPD production from Total and Chevron including more than 26 producing fields.

• Evaluation of exploration prospects to take working interest in Libya, Nigeria, Angola, Gabon, Congo and Australia.

• Evaluation of the feasibility for development of a super-giant heavy oil field in Iraq. Sonangol has subsequently been successful in obtaining a service agreement.

• Mentoring and training of Sonangol P&P petroleum professionals at all levels.

• Resourcing of Senior Geoscience Staff

• Design of yearly and 5 year plans for field development and studies

• Principal development geologist for 5 producing fields ( 80,000+ BOPD)

• Static Modelling using Petrel and GeoFrame.

SENIOR PRODUCTION GEOLOGIST January 2003 – February 2005

Petroleum Development Oman

• Co-ordinator for studies of a major clastic heavy oil field to determine the viability of water flood and EOR and to provide an FDP. Provided geological back-up for the sector modelling and monitored and reviewed geology provided by Shell consulting groups. These studies involved in-house teams and Shell teams and outside consultants in Aberdeen. Successfully passed VAR2.

• Focal point for Al Khlata reservoir geology for the PDO Study Centre.

• Deputy Team Leader for the Marmul fields Studies Team.

• Peer reviewed other studies and projects within PDO -- both clastic and carbonate.

• Mentoring of Junior, Intermediate and Senior Geoscientists for all types of fields within Oman, including fractured carbonates with light oil, and the heavier oils in the south in clastic reservoirs.

• Constructed static models for dynamic modelling using Petrel and Seisworks.

PRINCIPAL GEOSCIENTIST, PROJECT MANAGER May 2001 – December 2002 Schlumberger Data & Consulting Services, Angola

• Project Manager and Geologist/Modeller for Subsurface Studies, FDP and Operations for the development of a marginal field offshore Angola for Sonangol P&P. During the development extensive use was made of attribute analyses of the seismic data and near real time updates of the predictive simulation model, including multiple realisations. Did interference tests to determine communication in the initial production stages of the reservoir.

• Interim Manager of Data and Consulting Services for West and South Africa, May 2001 – October 2001

• Interim Manager of Data Services for West and South Africa. May 2001 – January 2002

• Startup Manager of a joint venture for data services with Sonangol DPP, the concessionaire in Angola May 2001 – Jan 2002

• Manager and business development for Consulting Services in Angola.

• Provided Senior Reservoir Engineering (Simulation and field development ) consultants to Total and Sonangol P&P. Negotiated 2 contracts with Sonangol and 1 with Total to allow this.

• Provided design for the training program for the Subsurface Group of Sonangol P&P

PRINCIPAL GEOSCIENTIST May 1997 - May 2001 Schlumberger Holditch-Reservoir Technologies Ltd., UK

• Project manager and geologist/modeller to describe and develop a field offshore Angola for Sonangol P&P. The project was done in the UK to fast track the development. During the development phase the project was moved to Angola.

• Static modeller, geologist and project manager for integrated projects in Jordan, Qatar, Saudi, Western Siberia, Nigeria, Gabon, Myanmar, Austria, Angola and Libya.

• Responsible for major marketing efforts and proposal preparation for Saudi Aramco and other Mid-Eastern companies.

STAFF PETROPHYSICIST/ RESERVOIR GEOLOGIST March 1989– May 1997

Zueitina Oil Company, Libya

• Leader of a team responsible for step out drilling locations, operational decision making for completion, testing and logging of development wells, detailed reservoir characterisation and mapping projects to build models for reservoir simulation.

• I was personally responsible for:

o Geological models of reef, sabkha and shallow marine reservoirs with complex faulting.

o Design, budgeting, tracking and evaluation of special core analysis projects.

o Budgeting, tracking and evaluation of Reservoir Characterisation projects by consultants

o Evaluation, budgeting, purchase and system administration of log analysis, data basing, geological mapping, geophysical and networking systems and associated hardware; both PC and Unix based.

o Training of junior log analysts, geologists and reservoir engineers.

EXPLORATION ADVISOR April 1988- March 1989

Texaco Canada Resources

* Technical advisor to senior management on completions, testing, well site operations and formation evaluation for onshore, North Atlantic and Arctic offshore, and International projects (Brazil, Mauritania, etc.)

• Focal point for log analyses for the Exploration Department

GEOLOGICAL SUPERVISOR June 1987 - April 1988

Watts, Griffis & McOuat (Client, QIT Fer et Titane)

* Supervised local Geological staff on 1500 hole drilling project at Tolagnaro, Madagascar . The working language was French

* Provided a sedimentological interpretation, constructed a data base and produced maps and sections to evaluate ore content and distribution of a pro-grading beach sand and lagoonal heavy mineral deposit. Geostatistical methods were used for determination of Ilmenite in place

CONSULTANT WELLSITE GEOLOGIST January 1987 - May 1987

* Red Earth, Northern Alberta for Husky Oil Operations

STAFF RESERVE EVALUATIONS GEOLOGIST December 1985 - January 1987

NRG Engineering Ltd.

* Prepared economic reserve evaluation reports for various small and medium sized companies for annual reports and acquisitions with interests in Canada and the US.

SENIOR PETROPHYSICIST January 1982 - December 1985

Husky Oil Operations Ltd

* Operational on-call independent decision making with regard to formation evaluation and logging for onshore and offshore drilling operations

* Participated as technical advisor in committee meetings for offshore wellsite operations, formation evaluation and exploration drilling locations, in both the onshore and offshore environments

* Presented formation evaluation reports and test programs at partnership meetings, and to highest levels of management.

* Computer log analysis for exploration, production and operations departments.

* Computer mapping using Sukar

* Hydrostatic and over-pressure system analysis from drilling, log and test information.

* Member of in house "expert panel" to estimate uncertainties and risks associated with exploration including the use of probabilistic methods (Monte Carlo).

SENIOR UNIT MANAGER January 1981 - January 1982

Baker/Exlog Australia

* Wellsite engineering and geology offshore New Zealand and Australia.

* Designed and taught a basic log analysis course.

OPERATIONS GEOLOGIST November 1979- January 1981

Husky Oil Operations Ltd.

* Responsible for picking DST intervals from open hole logs on a 24 hour on-call basis.

* Responsible for partner liaison with respect to wellsite operations.

* Compiled and disseminated data to partners and within the company.

* Analysed logs and prepared completion programs.

PRESSURE EVALUATION GEOLOGIST June 1978 - November 1979

Baker/Exlog Canada

* Wellsite geology and engineering (computerised) in Canada and Alaska.

GEOLOGICAL/GEOPHYSICAL TECHNICIAN June 1976 - June 1978

Uranerz Exploration and Mining (part-time and summers)

* Designed, constructed and operated airborne radiometric and magnetic systems.

* Maintained and repaired field geophysical equipment in the Canadian Arctic.

* Geological mapping, data compilation and analyses, also in the Canadian Arctic.

ACADEMIC HISTORY

B.Sc. Geology, Minor Economics; University of Calgary, 1978

PUBLICATIONS AND MANUALS

Twaddle, D.A., Basic Well Log Analysis Manual and Course ; Exlog, 1981

Twaddle D.A.; Analysis of the B Q Fm., Bellshill L., Alberta; CWLS Log Analysis Handbook, 1985

Abdulmawla, Dr. Reda, Twaddle, D.A., Advanced Formation Evaluation: National Oil Company sponsored inter-company course, 1995

Abdulamawla, Dr Reda, Sadikoglu, K., Twaddle, D.A., Arbi, M.; Simulation of the Sabah Field, Libya, 9th EAGE Symposium on IOR, the Hague, Oct 20-23rd, 1997

Warren, G; Twaddle, D.A.; Marginal Field Development Offshore Angola; Presented at SPE Meeting, March 2001, London and at the EAGE Symposium, the Hague, June, 2001

Twaddle, D.A.; Taia. E; Martin R.; Hartanto, R; Augustino, A; Integration of Seismic attributes and Petrophysical Data to Model the Reservoir Properties of a Fractured Carbonate Reservoir, Congo Basin, Offshore Angola; Presented at the SPWLA Symposium and at the Angola Geophysical Society Symposium in September and November 2002 respectively, in Luanda, Angola

Fernandes, J; Abdulouahib, Y; Ceyhan. A; Twaddle, D.A.; Field Permeability Measurements using the Dual Packer MDT tool. Presented at the SPWLA Symposium in Luanda, Angola, September 2002: Winner of Best Paper

Ilidio Silva, Joaquim Fernandes, Frederico Domingues, Paula Marinho (Sonangol), Adil Ceyhan, Don Twaddle, Ahmed Abdelouhab, Juan Angel; Measuring In-situ Permeability and Well Communication in the Angola Offshore by using a Formation Tester Tool; Presented at the 44th Annual SPWLA Symposium - June 2003

Alda Agostinho, Ernesto Taia, Donald Twaddle, Ron Martin, Ricardo Hartanto, Joel Le Calvez

"Pacassa Reservoir: Integrated Reservoir Modelling of an Albian Carbonate Ramp Margin, Congo Basin, Offshore Angola"; Presented at: HGS - PESGB: Second Annual International Symposium. Africa: New Plays - New Perspectives, 2004

ASSOCIATION MEMBERSHIP

American Association of Petroleum Geologists (AAPG)

Association of Professional Engineers and Geoscientists of Alberta (APEGA)

Society of Professional Well Log Analysts (SPWLA)

Society of Petroleum Engineers (Peer reviewer) (SPE)

Petroleum Exploration Society of Great Britain (PESGB)

European Association of Geoscientists and Engineers (EAGE)

PERSONAL

Languages: English, French, Basic Portuguese

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