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Reservoir Testing: Key Enabler for Accurate Reservoir Characterisation

26 – 27 May 2014

Dubai, UAE | The Address Dubai Marina Hotel

Technical Agenda

Session 1: New Developments in Testing Hardware

Session Chairs: Cidar Mansilla, Halliburton; Jordan Mimoun, ExxonMobil

The primary objective of a well test is the acquisition of reservoir data and fluid samples for reservoir characterisation purposes. To that end, specialised hardware is required to flow reservoir fluids to surface to a drilling rig in a safe and controlled manner. This session will explore the latest technology developments to control a well during testing while acquiring reliable and accurate data that will be subsequently analysed to characterise the reservoir.

Session 2: Development and Evolution of Tight and Unconventional Reservoirs

Session Chairs: Florin Hategan, Devon Canada Corporation; Robert Hawkes, TRICAN

Following the success of Barnett Shale, horizontal drilling, and multi-stage hydraulic fracturing rapidly spread across North America with new emerging shale gas, liquid rich, condensate, and oil plays, changing the industry’s landscaping.

Advancements in drilling and completion technology proved crucial for economic production of hydrocarbon from unconventional shale reservoirs, also referred to as Nano-Darcy reservoirs.

To meet future growing energy demand, exploration of shale reservoirs became high priority for governments, national oil companies, integrated, and independent oil companies, anywhere from the Americas to Europe, Russia, throughout Middle East, Asia, Australia, and Africa.

Development of unconventional reservoirs unleashed significant challenges such as: high drilling and completion costs, evaluation through conventional well testing, representative fluid sampling and characterisation, ability to accurately predict EUR’s, manage uncertainties and risk mitigation, or growing environmental concerns.

This session will address some of the above challenges and share experiences and views gained over the years, while providing some answers and solutions.

Session 3: Well Testing Interpretation and Software

Session Chairs: Muhammad Navaid Khan, ADMA-OPCO; Vikash Kumar, Schlumberger

Increasing global energy demand has led the oil and gas industry to revisit the complex reservoirs for reassessing their development viability. Better reservoir characterisation is a main foundation of an effective field development plan. Today, the advances in well test interpretation techniques along with the powerful data processing software are enabling reservoir engineers to understand those reservoir characteristics which were inexplicable in the past. This session will endeavour to understand the strengths and limitations of new well test interpretation methodologies and learn about recent developments in interpretation software.

Session 4: Complex Wells and Reservoirs

Session Chairs: Minhas Haq, Baker Hughes; Saud A. BinAkresh, Saudi Aramco

The developments in drilling and completion technologies have greatly improved hydrocarbon exploitation from complex reservoirs. Flow control devices, such as ICDs or ICVs, have been increasingly used as an effective completion strategy to optimise production along horizontal wells. Geological complexities in reservoirs exist due to different deposition environment and/or tectonic activities, causing major geological features such as faults and fractures. Complexities are also observed in reservoir fluids as in heavy oil reservoirs, oil reservoirs below the bubble-point pressure, and gas condensate reservoirs below the dew-point pressure. The pressure data from the combined complexities in reservoirs, fluids, and wells can be very challenging to interpret. This session will focus on analysis and interpretation of pressure transient data form complex wells and reservoirs systems such as:

  • Fractured reservoirs
  • Dual permeability/dual porosity systems
  • Faulted and compartmentalised systems
  • Channel sands
  • Composite reservoir system
  • Horizontal and multilateral wells
  • Wells completed with ICDs/ICVs
  • Layered reservoirs
  • Gas condensate reservoirs
  • Heavy oil reservoirs

Session 5: Sampling and Reservoir Fluids, and Flow Assurance

Session Chairs: Emmanuel Delvaux, Schlumberger; Ramiro Berron, Petrofac

Ability to recover representative hydrocarbon samples from the reservoir and obtain various fluid properties data is essential to assess the reservoir potential and to design operation of production facilities. With wells being drilled in harsher environments, reservoir samples are exposed to potential contamination from complex drilling mud systems, and large variation of pressure and temperature. Samples can be acquired during various phases of development, from exploration drilling through well production, and each sample brings some new information which combined together will provide the most accurate reservoir characterisation. From deep-water to desert environment the importance of flow assurance cannot be underestimated to ensure uninterrupted hydrocarbons flow to the production facilities and enable maximum recovery.

This session will aim to cover subjects such as fit-for-purpose sampling for particular application, value of hydrocarbon measurement downhole, at the well site and in the laboratory, benefits of petroleum geochemistry and water chemistry applications, impact of well design and operation based on flow assurance methodologies.

Session 6: Best Practices in Well Testing Operations in Challenging Conditions

Session Chairs: AbdulHakim H. Al-Nahdi, Saudi Aramco; Curtis Wendler, Halliburton

As we explore for more HC potentials in challenging conditions such as complex geological prospects and aggressive environments i.e. high pressure (>10000 psi), high temperature (>400 F deg.), deep water and more hazardous fluid compositions, the well testing operations possess risks and high costs actions. HSE risks are also well thought out during flowing and/or flaring formation fluids. With an ever increasing awareness of the challenges both inside and outside the industry, new technologies and best practices can reduce the burden of well testing in challenging conditions. In this session we will examine the best practices and new technologies to overcome recent challenges in testing operations.

Session 7: Way Forward in Well Testing

Session Chairs: Fikri J. Kuchuk, Schlumberger; N.M. Anisur Rahman, Saudi Aramco

In this session, future technologies that will solve some of the immediate challenges in well testing will be discussed. As the objectives of testing a good number of newer and soon-to-be-found hydrocarbon reservoirs cannot be accomplished using today’s technologies, the demand for innovations is more desperate than ever. Thus, the envelope of the state-of-the-art needs to be pushed. This session will give us an opportunity to appreciate the achievable objectives of tests that are complicated by environmental conditions, logistics, well completions, reservoir geology, and fluid behaviours. We will also examine the development of skilled professionals out of the young graduates, who will be motivated to deal with the challenges of modelling complex reservoir-fluid systems.

Some of the topics of interest include:

  • Trend and target of well testing
  • Expectations in short and long terms
  • Environmental challenges and probable solutions
  • Testing without flaring
  • Cross-discipline collaboration
  • Added value
  • State of research and innovation in the industry
  • Motivating science and engineering graduates