Schlumberger

Technical Paper: Alternate Path Completions: A Critical Review and Lessons Learned From Case Histories With Recommended Practices for Deepwater Applications

Society: SPE
Paper Number: 86532
Presentation Date: 2004
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Abstract

Since its introduction, over 700 alternate path sand control completions have been implemented around the world ranging from single zone cased hole gravel-packs to multi-zone fracpacks and fibre optic (DTS) enabled open hole horizontal completions. Over the last six years, the alternate path system has been field proven to provide high reliability in achieving complete packs as well as additional features allowing simultaneous cake cleanup, shale bypass and other contingencies that enable doing it right the first time in deep-water/subsea completions where interventions tend to be economically and logistically prohibitive.

This paper provides a critical review of those completions, capturing both successes and failures, along with the lessons learned in their design, execution and evaluation in relation to completion efficiency in sanding reservoirs. Furthermore, it details future development work and enablers that will allow the use of alternate path technology as the mainstay of intelligent well solutions, geometrical design improvements to provide optimal aspect ratios in the wellbore and its applicability in conjunction with water packing.

Alternate Flow Path Reduces Risks of Gravel-Pack Failure

Alternate Path Technology

The Alternate Path system allows multiple zones to be isolated and gravel packed in a single trip with a single pumping operation.
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