Oil and Gas

Oil and Gas | Reservoir Development

Development Planning For Mature Fields

Course Code: N444
Course Outline:  Download
Format and Duration:
3 days
5 sessions

Next Event

Location: Stavanger
Date:  9 - 11 May. 2023
Start Time: 08:30
Event Code: N444a23C
Fee From: GBP £2,745 (exc. Tax)


Business Impact: This course equips participants with the knowledge and decision-making skills to create a robust development plan for mature fields.

This multidisciplinary course is designed to give participants a broad appreciation of the evaluation and planning activities associated with incremental development planning. This course takes groups through a wide range of associated issues, fills any knowledge gaps in the essential technical fundamentals required for mature field development planning and uses a case-based exercise which will run through the whole course.


"Very well presented and organized course, covering important topics from strategy to probability, economics and planning in a redevelopment project, and more importantly how to work as a team."


Event Code: N444a23C
Duration: 3 days
Instructors: Jerry Hadwin
Dates: 9 - 11 May. 2023
Start Time: 08:30
Location: Stavanger
Fee From
GBP £2,745 (exc. Tax)
Good Availability
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Duration and Training Method

This is a classroom or virtual classroom course comprising a mixture of lectures, discussion, case studies, and practical exercises.

Course Overview

Participants will learn to:

  1. Characterise the overall challenges associated with mature field developments.
  2. Evaluate critical insights from subsurface data and apply this to modelling options and recovery methods.
  3. Assess associated well data, typical late life issues and drilling and completion options for mature developments.
  4. Manage the role of risk and uncertainty when making mature field development planning decisions.
  5. Prepare a strategy and implementation plan.

Mature fields differ from greenfield developments in that major infrastructure is in place, static reservoir data has accumulated from development drilling and a growing volume of production data has become available. Decisions therefore relate to incremental projects, which may be small in scope and are often economically marginal. A firm understanding of the technical fundamentals associated with reservoir, wells and surface facilities is therefore required to make quality decisions in this environment, supported by an understanding of incremental project economics.

Challenges of mature field developments

  • Open discussion covering smaller target sizes, costs, efficiencies, perceptions

Mature field development strategies

  • What is strategy? The difference between green and brownfield decision making
  • Framework (choices, boundaries, selection criteria, framing decisions)
  • Evaluation methods
  • Workflows, overview of tools

Mature oil fields

  • Subsurface: getting insights from data (surveillance mapping), recovery mechanisms, modelling options (analytical, sector, full field), history matching, EOR
  • Wells: understanding well data, typical late life issues (flow assurance), drilling and completion options (including workovers)
  • Surface: understanding surface data (including allocation), surface options e.g. debottlenecking

Mature gas fields

  • Subsurface: insights from data, modelling options, gas condensate issues e.g. condensate banking
  • Wells: gas issues e.g. liquid loading
  • Surface: gas issues e.g. late life compression


  • Typical economic decision making criteria
  • The importance and pitfalls of incremental economics
  • Finding the optimal development strategy

Decision making

  • Evaluation methods
  • Dealing with risk and uncertainty
  • Biases in decision making
  • How to make the best decision



Implementing and development managing the selected plan

  • Building the plan
  • Managing the plan when it goes off track


The course is designed for mid-career subsurface professionals, specifically petroleum engineers and geoscientists who play a part in evaluating, screening and maturing oil and gas field development opportunities in mature fields. Participation would also benefit technical team leaders and managers who want to gain an insight into the challenges, uncertainties and preparations involved in development planning for mature fields.

Mark Bentley

Mark has over 30 years industry experience, initially as a production geologist with Shell, working in the UK, Oman and the Netherlands and subsequently training and consulting with TRACS. He has spent most of his career working in integrated study teams on a wide variety of reservoir assets. His specialist fields of expertise are 3D reservoir modeling and scenario-based approaches to handling subsurface uncertainty and risk. He publishes widely on the topic and co-authored the reference text 'Reservoir Model Design' with Phil Ringrose.

In addition to his role as Training Director at TRACS, he is also an Associate Professor in the Institute of GeoEnergy Engineering at Heriot-Watt University, holding a Chair in the field of Mature Field Management.

Affiliations and Accreditation
PhD University College of Wales, Aberystwyth - Structural Geology
BSc University College of Wales, Aberystwyth - Geology
Fellow of the Geological Society, London
Fellow of the Society of Petroleum Engineers
EAGE Member

Courses Taught
N033:  Characterisation, Modelling, Simulation and Development Planning in Deepwater Clastic Reservoirs (Tabernas, Spain)
N106:  Advanced Reservoir Modelling (Elgin, Scotland)
N310:  Carbonate Reservoir Modelling and Field Development Planning (Provence, France)
N356:  Production Geoscience (Pembrokeshire, UK)
N386:  Reservoir Model Design (Pembrokeshire, UK)
N427:  Reservoir Model Design
N444:  Development Planning For Mature Fields
N548:  Reservoir Modelling for Storage

Mark Cook

Mark Cook is a Principal Reservoir Engineer for TRACS International. His specialties are reservoir engineering, petroleum economics, and risk analysis and field development planning, subjects in which he has developed and delivers training courses to advanced levels.

Mark graduated with a degree in Chemical Engineering and has worked in the oil and gas industry since 1981, spending the first eleven years with Shell International as a reservoir engineer on field development projects, equity negotiations and operations in the UK, Oman, Tanzania and Holland. He then co-founded TRACS International in 1992, setting out to provide training and consultancy to the upstream industry. He built the business over time as Petroleum Engineer and Director, before taking on his current part-time role as Principal Reservoir Engineer.

He runs the SPE Short Course in Field Development Econmics, and has been an SPE Distinguished Lecturer in Risk Analysis. He is a guest lecturer at Heriot Watt Univeristy. He is co-author and editor of "Hydrocarbon Exploration and Production" (Jahn, Cook, Graham, 2008) and has written "Petroleum Econmics and Risk Analysis", published by Elsevier in January 2021.

Affiliations and Accreditation
MBA, Henley Management College
BSc, University of Nottingham, Chemical Engineering
Director, Delta-T Energy Consultancy Ltd. (Dublin)

Courses Taught
N006: An Introduction to Reservoir Engineering for Geoscientists
N014: Petroleum Economics and Risk Analysis
N444: Development Planning For Mature Fields

Jerry Hadwin

Jerry Hadwin has over 30 years of upstream experience, and able to operate at all levels both technically and commercially. He enjoys new challenges, providing innovative solutions to complex problems and enabling optimum business decisions. Jerry has worked in a number of locations world-wide, with core expertise in reservoir engineering, in a variety of roles and projects; exploration prospect evaluation, field development planning and management, corporate business planning and drilling operations, as well as business management. He has completed many petroleum engineering projects throughout his career, from reservoir modelling through to reserves audit for a range of companies internationally, and has led many PE study teams to successful conclusions. Jerry also conducted reservoir engineering and commercial training for both national and international oil company staff.
Projects include:
• Reservoir Engineering support for Petrochina on the Ahdeb Field in Southern Iraq
• Director of India Projects – Marketing and development of opportunities in India
• Economic Evaluation of reserves for Hibernia Field for CHHC
• Reservoir Engineering, Economics and Reserves Evaluation for Mnazi Bay Gas Field, Tanzania for Maurel et Prom
• Review of production forecasting for Korean company asset in northern British Columbia
• Evaluation of sale proposal for waterflood asset in Western Canada for potential buyer.
• Acid Gas Disposal regulatory approval submission for Paramount
• Petroleum Engineering support for Mexican bidding round for small independent
• Development and delivery of Reservoir Engineering and Reserves Evaluation Training Courses
• Reservoir Engineering and Economic evaluation of Hibernia Field for Reserves Evaluation
• Due diligence, M&A support for Western Canadian assets

Affiliations and Accreditation
M.Eng. Heriot Watt University - Petroleum Engineering
BSc Nottingham University - Chemical Engineering

Courses Taught
N422: Reservoir Engineering for Non-Engineers
N444: Development Planning for Mature Fields
N997: Applied Reservoir Engineering


Richard Oxlade


Richard Oxlade is an oil and gas industry advisor with a petroleum engineering background. He has over 35 years of oil and gas industry experience with a major operator (BP) and a consultancy (TRACS) in a range of technical, commercial, and leadership roles. He is recognised as a very strong analytical thinker who can cover strategic issues and deal with complexity and detail. He is respected for providing business advice at all levels of the organisation up to CEO level. He has a track record of working with multi-disciplinary teams, complemented by an enthusiasm for developing others through coaching and teaching.

Courses Taught
N006: An Introduction to Reservoir Engineering
N014: Petroleum Economics and Risk Analysis
N310: Carbonate Reservoir Modelling and Field Development Planning (Provence, France)
N444: Development Planning For Mature Fields

CEU: 2.1 Continuing Education Units
PDH: 21 Professional Development Hours
Certificate: Certificate Issued Upon Completion
RPS is accredited by the International Association for Continuing Education and Training (IACET) and is authorized to issue the IACET CEU. We comply with the ANSI/IACET Standard, which is recognised internationally as a standard of excellence in instructional practices.
We issue a Certificate of Attendance which verifies the number of training hours attended. Our courses are generally accepted by most professional licensing boards/associations towards continuing education credits. Please check with your licensing board to determine if the courses and certificate of attendance meet their specific criteria.