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An introduction to expandable completions

overview. what are expandable completions?expandable completions ? the visioncomparing expandable completions with conventional sand control completionsthe expandable completions market place ? what is availablekey technology themes for high performance expandable completionsqualification and assurancesummary.

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An introduction to expandable completions

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    1. an introduction to expandable completions Phil Smith and Jennifer Reese, EPTG Completions & Sand Control

    2. overview what are expandable completions? expandable completions – the vision comparing expandable completions with conventional sand control completions the expandable completions market place – what is available key technology themes for high performance expandable completions qualification and assurance summary

    3. what are expandable completions? A mechanical method for installing a sand control completion No gravel placement issues – none required! Run the sand screen to bottom – expand it to meet the borehole wall Borehole contact/support prevents sand movement Good potential for zonal isolation and selective completion

    4. expandable completions – a vision the system components: Expandable Liner Hanger Expandable Solid Pipe Expandable Isolation Packer Expandable Sand Screen

    5. expandable completions – a vision the system components: Expandable Liner Hanger Expandable Solid Pipe Expandable Isolation Packer Expandable Sand Screen

    6. expandable completions – compared

    7. the expandables marketplace

    8. key vendors Market leader with more than 200 expandable screen installations

    9. vendors systems summary

    10. technology themes

    11. effective sand control

    12. how important is the gap? expandable screens - what is different? annular gap is significantly reduced by design amount of annular flow is significantly reduced (change in flow regime) amount of strain relaxation of formation may start to become a reasonable % of this ‘gap’ depending upon rock failure mode (granular failure vs. shards of rock), this ‘gap’ may be quickly blocked / filled rock - sediment interaction dynamics depending upon the gap, the screen-sediment may begin to behave as a coupled system i.e. as gap fills with failed formation/sediment, this in turn, may change how further sediment fails / subsequently transported to the screen

    13. efficient installation - main drivers number of trips required for completion installation single trip installation provides a very efficient completion installation option Primary driver for efficient installation expansion speed for long intervals can have a significant impact on completion installation time secondary driver for efficient installation

    14. cased hole functionality - benefits zonal isolation in open hole potential provided by borehole contact differential pressure rating of isolation able to set plugs in pre-determined sections of the completion ability to install selective completions integration of DHFC zonal isolation & flow control equipment other issues e.g. injection flow path & rates

    15. qualification and assurance Process Outline FUNCTIONAL SPECIFICATIONS: Set expectations by defining minimum functional requirements FMECA: Apply aerospace reliability practices to ensure potential failure modes are understood and appropriately addressed. TESTING PROTOCOLS: Set, or approve, the standards to which expandable screen equipment will be tested, in order to show that specifications are met. QA/QC: Ensure that an adequate and auditable product acceptance process is in place with potential suppliers and that it is actively assessed. QUANTITATIVE RISK ANALYSIS: Assess the suitability of expandable completion systems in candidate wells using a suitable QRA method. INSTALLATION ASSURANCE: Provide job assurance using central engineers and ensure effective data acquisition for all jobs in the medium term.

    16. summary expandable completions provide: a fundamentally different method of achieving sand control a step change in sand control completion installation efficiency functionality not previously available in sand control completions equipment development: is being addressed with a range a expansion technologies is being subjected to significant industry led qualification is still happening at pace - rapid technology change still occurring current status still a new technology, but results are showing significant potential market place competition still developing

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