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Well Completion Types

  • Date Submitted: 09/17/2014 01:24 AM
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Well Completions  Well Completions

Completion ‐ Completion Definition
• • After a well is drilled and the hydrocarbon bearing reservoirs have been  After a well is drilled and the hydrocarbon bearing reservoirs have been established, it needs to be completed to allow the hydrocarbons to flow  from the reservoir to surface. Completions are the interface between the reservoir and surface  Completions are the interface between the reservoir and surface production. The role of the completion designer is to take a well that has  been drilled and convert it into a safe and efficient production or injection  conduit. The ideal completion is the lowest cost completion (considering initial and  operating cost) that meets or nearly meets the demands placed upon for  most of it life. f i lif The aim of completion design is obviously to deliver optimal quantities of  fluid with maximum safety and efficiency throughout the life of the well. Completion design is a mix of physics, chemistry, mathematics,  C l i d i i i f h i h i h i engineering, geology, hydraulics, material science and practical hands‐on  wellsite experience.

• • • •

Completion ‐ Completion Categories
• Completions are categorised in several ways,  common criteria include: • Wellbore/reservoir interface
–O Open hole or cased hole h l dh l

• Production method
– Natural flowing or pumped production

• Number of producing zones Number of producing zones
– Single or multiple zone completion

Open Hole Completion Open Hole Completion
The term open hole covers a variety of completion techniques: Th t h l i t f l ti t h i • Bare foot completions – no tubulars across the reservoir face. • Pre‐drilled and pre‐slotted liners. • Open hole sand control techniques such as stand‐alone screens,  open hole gravel packs and open hole expandable screens. open hole gravel packs and open hole expandable screens. • Many of the simpler multilateral systems use open hole reservoir  techniques. • The Open hole...

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