Marginal Field Development and Optimisations


Green fields today mostly can be regarded as marginal fields and successfully developed. This one-day course elaborates the strategies for green field development. It covers the complete assessment of the oil and gas recovery potential from reservoir structure and formation evaluation, oil and gas reserve mapping, their uncertainties and risks management, feasible reservoir fluid depletion approaches, and to the construction of integrated production systems for cost effective development of the green fields.

Session 1: Do you know your Green Field?

  • How marginal is your field? Basic definitions and challenges.
  • Reservoir structure, connectivity, and uncertainties
  • Drive mechanisms and development strategy (phasing)
  • Managing the development risks

Session 2: Where are the oil and gas reserves?

  • Oil and gas distribution and uncertainties
  • Determination of potential reserve
  • Decision tree and scenario definitions to handle low case
  • Clustering small fields

Session 3: How to deal with uncertainties?

  • Well placement, optimisation, and design
  • Early production systems
  • Surface and subsurface integration to save cost
  • Role of new technology and data acquisition

Session 4: Can you add value and lower cost?

  • Well design and completion: A life saver!
  • Low cost well architecture
  • Smart well completion
  • Surface production system integration

Who Should Attend

  • Reservoir engineers
  • Geologists and petrohysicists
  • Drilling and completion engineers
  • Production engineers
  • Well integrity engineers
  • Field development managers
  • Oil field investment financial analysts


Engineers are responsible for enhancing their professional competence throughout their careers. Licensed, chartered, and or/ certified engineers are sometimes required by government entities to provide proof of continued professional development and training. Training credits are defined as Continuing Education Units (CEUs) or Professional Development Hours (PHD).

Attendees of SPE training courses earn 0.8 CEUs for each day of training. We provide each attendee a certificate upon completion of the training course.


Abdolrahim Ataei

Abdolrahim Ataei is currently a principal reservoir engineer at Petroleum Resource Development at PETRONAS and has more than 24 years of industrial and academic experiences. He has worked in several positions in the E&P business, including offshore operation and production as well as well completion design and drilling. He has also worked on several FDP projects for brown field and green field in Malaysia. As a member of PETRONAS Technical Review Committee for the past 6 years, he was involved in several field development plans for green and brown field developments and their challenges. He will share some of those examples with the audience.

Ataei is also collaborating with UTP (University technology PETRONAS) by supervising the MSc and PhD projects as well as supporting the academic programs. He has published more than 20 technical papers in various international journals and conferences on different area in reservoir description and characterisation. His areas of interest are reservoir dynamics, EOR, reservoir connectivity, and well deliverability estimation. He is also expert in gas condensate reservoir behavior and condensate banking modeling and evaluation.