SPE logo

Effective Waterflooding—An Integrated Approach

4 – 5 March 2014

London, United Kingdom | Charing Cross Hotel

Provisional Technical Agenda

Tuesday, 4 March, 0915–1045

Session 1: Reservoir Needs

Session Managers: Chris Jones and Andrew Parker

Waterflooding is an integrated cross-discipline activity with the goal of improving oil extraction through the optimal placement of water in the reservoir. Hence, understanding reservoir aspects that lead to a successful flood is vital. This is not only the “reservoir engineering” aspect (i.e. where the wells are drilled, which pattern is selected, and completion type) but also other, perhaps non-traditional attributes, such as geomechanics, biological aspects, the importance of production chemistry, and even particle analysis.

This session will aim to explore the following:

  • Reservoir architecture impacting sweep and pattern selection
  • Injection parameters dictating matrix vs. fracturing injection, including water quality selection for managed fracturing injection
  • Things that can go wrong in the subsurface: souring, loss of containment, and excessive scaling
  • Geochemistry—properties of oil, gas, formation water, and rocks

1345–1515

Session 2: Water Sources and Treatment Processes

Session Managers: Stanton Smith and Frank Zheng

This session puts the water back in waterflood. It is all too easy to forget about injection water quality when the focus is to improve oil production. Yet with waterfloods, these two are inextricably linked together. There have been reports where apparently simple procedures, like blending of production water and seawater prior to reinjection, led to severe production loss. In other cases, the challenges in produced water treatment are often considerable for reinjection into its source reservoir (or whether it is to meet offshore discharge regulations or the typically ‘tighter’ near-shore or onshore regulations). This session will explore some of the aforementioned scenarios and some more conventional water treatment scenarios with a focus on:

  • Experience and optimisation of raw water treatment, including sulphate removal, desalination, bacteria control, and de-oxygenation
  • Produced water treatment for reinjection: specifications for reinjection, produced water treatment technologies specifically targeting reinjection, process integration, and optimisation such as water blending, etc.
  • New technologies: novelty, benefits, integration, and the technology fit into the waterflood market
  • Integrated water decision trees: water source availability assessment (e.g. waste, surface, sea, aquifer, and produced water); water characterisation; and water treatability analysis

Wednesday, 5 March, 0900–1030

Session 3: How Do We Deliver the Injection Water?

Session Managers: Pierre Pedenaud and Colin Smith

This session covers how we deliver injection water by looking at aspects of waterflood system engineering design; construction from water treatment systems through pipelines; and on to injection wells. This session aims to explore the following:

  • Conventional, bespoke, and template waterflood system designs and concepts, with continuity from concept through Front End Engineering Design (FEED); Engineering, Procurement and Construction (EPC) projects; best practice with facilities commissioning and handover; and the drive to improve waterflood efficiency while lowering capital and operational expenditure
  • Materials of construction covering water treatment systems, pipelines and injection wells, with coverage of issues such as integrity management, causes/solutions of equipment, pipeline and tubing failures, facilities maintenance, and corrosion management
  • Waterflood systems operability and availability improvement by design and by operational optimisation practices, with case examples illustrating the lessons learned
  • Water injection and disposal well drilling, completion, workover/stimulation, suspension, conversion, and controls practices in the industry
  • Waterflood system facilities design. Utilising optimal technologies, practices, experience, and equipment, including best-available techniques (BAT) and best environmental practice (BEP), inherently safer design (ISD), hazard and operability study (HAZOP), etc. with a look at different types of waterfloods and subsea/deepwater options, illustrated by examples where possible

1330–1500

Session 4: Operations, Monitoring, and Change Management

Session Managers: Nitika Kalia and Keith Robinson

New facilities are often difficult to operate at best efficiency because the operating conditions (e.g. flow rates, pressures, and stream compositions) are commonly very different from the design basis. From the outset, the operations team has to manage changes. Those changes continue through the field life and become more difficult as facilities age, corrosion and reservoir souring occurs and Enhanced Oil Recovery (EOR) techniques are introduced. Monitoring of water quality, facilities, and reservoir performance are crucial activities to manage the changes, as well as ensure cost-effective, day-to-day oil and gas production. Topics we aim to address in this session are:

  • Operating practices and challenges, quality, health, safety, environmental (QHSE), and training
  • Monitoring of water quality—facility location and complexity, manning, flow rates, technology, reliability, evaluation, and response
  • Monitoring of injection well and reservoir performance (3D, 4D, pressure, conformance and voidage replacement); sensing technologies, and interpretation data analysis
  • Monitoring of producer wells for onset of water front from the injector wells (near wellbore conductivity measurements, new technologies in sensing; reuse criteria)
  • EOR – polymer, Alkaline Surfactant Polymer (ASP), Microbial Enhanced Oil Recovery (MEOR), CO2, Water-Alternating-Gas (WAG), Simultaneous Water and Gas Injection (SWAG), etc. Selection, implementation, and effects on produced fluids (on to PWRI)
  • Failures (facilities, pipelines, wells, and reservoir performance), root-cause analysis, and remediation

1700–1730

Conclusion and Wrap Up