Middle East Energy

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Middle East Energy

• INERT
• CENTRALIZER SYSTEMS
• FOR THE
• DRILLING INDUSTRY

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Necessity of Invention
Metal manufactured centralizers appear capable of
ensuring that the casing is correctly centered
prior to the cementation. However, it is often
the case that a significant number of the
centralizers are rendered useless during the
installation process. This is because many of
the bows will flatten against the casing when
encountering a slight obstruction/protrusion from
the formation wall, key seats, ledges or when the
weight of the casing exceeds the tensile strength
of the mild steel. Either Way, the bow does not
reform, unless constructed from expensive spring
steel. Once some of the centralizer bows are
deformed, there is nothing to stop the casing
from resting against the wall of the hole during
the cementation, resulting in a compromised
cementation job. The section of casing adjacent
to the thinner or even non-existent parts of the
cement sheath, will almost always be the first
part of the casing to fail over time due to
corrosion, particularly when that section is
located within an aquifer containing high
salinity water and/or gases.
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Necessity of Invention

• A second major flaw of mild steel centralizers is
  the vulnerability of the centralizer itself to
  corrosion.
• Whilst it is true that the function of a
  centralizers is usually to hold the casing
  central in the bore only until the annulus is
  cemented, mild steel centralizers can compromise
  an otherwise perfect cement job as they corrode
  over time.
• Metallic centralizers are in contact with both
  the casing and the wall of the formation, even
  after the annulus has been cemented. As a result,
  groundwater is in contact with the outside edges
  of the steel centralizers and it will often
  completely corrode over time, leaving behind a
  channel or conduit through which the corrosive
  water and/or gases can travel and come into
  direct contact with the production casing.
• In any case, the inevitable result of both
  situations is the eventual complete failure of
  the bore due to corrosion of the casing.
• Corrosion issues aside, most drillers will admit
  to almost having nightmares about the thought of
  any metallic casing centralizer becoming jammed
  and breaking up in the hole during casing
  installation. This scenario is particularly
  worrying when non metallic casing/coatings are
  used (FBE, FRP, uPVC, etc).

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Inert Centralization System
Features and Benefits

• Manufactured as segments from a corrosive
  resistant
• polymer material.
• Ultimate Inventory control Two sizes fit all
  casing
• sizes (2-3/8 to 7 155 Series)(7 to 36
  380 Series).
• Ideal for use on all types of Casing, Tubing,
  Screens,
• Expandables, Chrome, CRAs.
• Pre-set centralizer bows and Annular Spacer
  Fins,
• promoting cement flow and optimum stand-off.
• Corrosion Resistant.
• No Stop collars required.
• Will not damage Casing.
• No Pins, Bolts or Welding.

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Chemical Resistance
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Product Information
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Middle East Energy
Other Products and Services

• Inflatable Packers and Systems from 3/8 to
  6.6ft OD, 100 to
• 10,000Psi.
• Swage/Casing Patches (Partial or complete well
  re-lining).
• Liner Hanger Systems.
• Float and Cementation Equipment.
• Drilling Programs and Software.