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Integrated Water Management—Brownfield to Greenfield and Back Again

3 – 5 December 2013

Lisbon, Portugal | Tivoli Lisboa

Technical Agenda

Tuesday, 3 December, 0900-1030

Session 1: Meeting Water Management Challenges in Brownfield Developments—Case Histories

Session Managers: Robin Shields and Alistair Strachan

The first session intends to set the scene for the workshop by providing a number of case histories presented by technologists who have addressed the challenges of water management in brownfield environments. Certain locations may be subject to constraints due to the availability of injection water required to maintain production and the capacity of existing process facilities to cope with the demands of wells. Such challenges ensure that prudent water management is vital to maintain the viability of fields which may be entering a third or fourth decade of production. With case history presentations, the session will provide an opportunity for debate of the issues raised and the sharing of experiences from the audience.


Session 2: Water Management Technology Upstream and Downstream of the Wellhead

Session Managers: Reidun Vold and Fazrie Wahid

“Streamlining processes, integrated analyses, lifecycle water management” are several buzzwords we have all heard in the water management arena, but what does it take for technology users and developers to install “difference makers” in our asset? In this session, we will set the scene using an operator’s experience in designing and putting together suitable and highly advanced technology suites to manage water and consequently oil, upstream, and downstream of the wellhead. Discussions will hinge around separation and water handling, monitoring, automation, management of produced water, the physics and chemistry and its associated engineering needs. Using an actual field scenario, participants will then be broken into small breakout groups where each team will have the opportunity to debate, discuss, and propose technologies that can make a difference, and present their results. Through facilitation, each team will be asked to come up with technological game changers that would make a difference in their own asset to spark further discussion and debate.


Session 3: EOR/Chemicals

Session Managers: Glyn Freeman and Lahcen Nabzar

The successful implementation of EOR requires a fully integrated approach based on well-established workflows. These workflows must take into account process screening for candidate fields, process implementation via laboratory studies for process design/optimisation, modelling/simulation, and piloting whilst taking into account proper water management and the environmental/societal issues.

In this session, the following topics will be considered:

State of art and current understanding and practices of EOR processes such as chemical EOR, CO2-EOR, Foam-EOR

  • How to optimise the process?
  • Cost benefit analysis?

Pilot and field case studies

  • Lessons learned
  • Challenges ahead to come-up with robust economically viable and environmentally sustainable solutions

Which source of water for EOR and which treatment?

  • Water quality specifications for EOR
  • Can we use produced water for EOR operation?

Impact of chemicals on water management cycle?

  • Emulsion issues
  • Impact on oil/water separation and water produced water handling


Session 4: Environmental

Session Manager: Wayne Evans

There are very few facilities with more than ten years operating history that have not had to modify their processes or practises to meet the new environmental drivers, whether these be legislative requirements or corporate goals. This session looks at how the industry has gone about responding to new environmental challenges and what lessons may be learned, particularly when planning production in unconventional oil or gas fields where environmental legislation has not yet fully evolved. Is it possible to plan for the unknown? Operators have huge progress in limiting the environmental impact of the water they use and the water they produce, but this is largely unrecognised by the general public. Should we make more noise about what we have achieved to date? The session will take an introductory look at the achievements to date and will seek to promote a debate about how we tackle the future.

Wednesday, 4 December, 0900-1030

Session 5: How do we Learn From Brownfields? a) Technology Transfer b) Role of Full Lifecycle Planning to Manage Project Uncertainty

Session Managers: Rod Farquhar and Reidun Vold

When a project takes an unexpected turn requiring expensive changes or lost value due to some unforeseen delay or operating constraint we often hear

“… with the benefit of hindsight we would have done things differently”. The brownfields whose water management issues and challenges were discussed in day one were at one time greenfields so this session will explore how we can use those learnings gathered over a mature field’s lifecycle to better anticipate the issues which we need to consider for effective future water management for a greenfield development. What are the critical aspects that need to be accommodated in the field development plan and where is there flexibility required to address challenges later if it is economically or technically prohibitive to future proof a project? Can we map a path for technology development from meeting today’s brownfield challenges to providing more cost effective and efficient solutions to the challenges today’s greenfields will demand as they mature? Can we apply hindsight to deliver an integrated water management approach to effectively manage the lifecycle transition from greenfield to brownfield that creates rather than consumes value?


Session 6: Greenfield Modelling

Session Managers: Glyn Freeman and Alistair Strachan

Development strategies for new fields may be developed based upon data obtained from seismic surveys, exploratory wells (looking and physical analyses), and other properties such as fluid properties and reservoir analogues. Based on what is often limited information, initial plans are defined through simulation studies considering either a probabilistic or stochastic approach to rank options using economic indicators including injection water availability. Decisions made based upon a biased viewpoint in full field life exploitation strategy can result in significant recoverable reserve loss to operators as well as higher than necessary water handling requirements.

In order to mitigate some of the problems associated with full life management various techniques have been developed by the industry. In this session we will explore the current methods, new technology, case histories, the important benefits of smart well completions and “intelligent, integrated well-field systems”.


Breakout Session: Full Circle

Session Managers: Rod Farquhar, Myles Jordan, Owen Vaughan and Fazrie Wahid

The breakout session is aimed at applying integrated water management concepts to a real problem. At the same time, this session will facilitate discussion and knowledge sharing among attendees.

Multidisciplinary teams will be challenged with developing strategies for water management for a large oil field, quantifying the value of their chosen strategy, and making a convincing case to gain approval from management and government representatives. The exercise will be modelled on an actual field case and use “real” data. The teams will consider key decisions that could affect well operability, processing, production chemistry, water injection and disposal, reservoir management, asset integrity, sand management, as well as employment security and bonuses.

Several challenges will be introduced during the exercise which will require teams to respond to changing company priorities, environmental regulation, and commercial agreements which can all have an impact on water management strategy. The teams will present their strategies and justification back to the room before a case study on the actual field is shared with the participants, followed by a discussion to wrap up the session.

Thursday, 5 December, 0900-1030

Session 7: Alternative Use of Water/ True Cost of Water

Session Managers: Wayne Evans and Lahcen Nabzar

Water scarcity is a rapidly growing concern and is becoming a major issue for the oil and gas industry. What steps do we need to take to better understand the true costs of the water we use, in terms of risks to future production and risks to the community? How can we mitigate the water impact that the industry has on its surroundings? As well as being users of water, we produce large volumes of wastewater in the form of produced water, flowback water, etc; what efforts are being made to turn this wastewater into a valuable resource for the benefit of the community or the environment?

The session will include introductory presentations on the true cost of water, on minimising water use (recycling of produced water, flowback water and drilling water) and on beneficial use in the community (river replenishment, irrigation, reuse of industrial effluents), followed by a discussion on how the industry might apply such techniques to make a positive environmental impact.


Session 8: Intelligent Water Design for Full Field Lifecycle Water Management

Session Managers: Myles Jordan and Robin Shields

It is important for greenfield development waterflood projects to think of the whole process upfront and meticulous planning is required in order to make the project as beneficial and cost-effective as possible. Many questions will have to be raised at the Front-End Engineering Design (FEED) stage in order to maximise success. Is there a benefit to running EOR chemicals into the injection system? If so, what process upsets might be encountered? Are these products compatible with other chemicals such as corrosion and scale inhibitors? Are these chemicals going to be back-produced such that any Produced Water Re-Injection (PWRI) strategy could be compromised? Is there going to be any risk to separation on the production side due to EOR chemical breakthrough? Can the use of intelligent well design help in the optimisation of the production and what can we learn from past experience? Are there new technologies on the market that can be deemed ready-for use and if not how, as a company, do we go about getting the technology approved as fit-for-purpose? Will there be benefits for other assets if we can get the technology to work?

This session will aim to tackle these questions using operator and service company experiences and case histories. The session leaders will also be looking to open up discussion in order to find out the experiences of the workshop delegates.