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Liner hangers provide an efficient and cost-effective means of connecting a liner extending from the hole setting depth to the bottom of the existing casing. Use of liner hangers prevents the need to set the liner on the hole bottom and promotes less stringent casing requirements. This yields greater flexibility when purchasing casing for your drilling program and results in reduced costs.

  • Case-off an open hole below a long intermediate casing string or when casing is being hung off bottom.
  • Reduce off-bottom time by preventing the need to lay down drill pipe and pick up a full casing string.
  • Control water, gas, or sand intrusion after a previous open-hole completion.
  • Protect against down-hole blowouts when drilling abnormal pressure zones.
  • Prevent flow of fluids between zones or intervals.
  • Hold back unconsolidated or sloughing formations and establish high quality cement completions.
  • Prevent loss of circulation in weak upper zones while drilling with normal weighted mud to control normal pressured zones at deeper intervals.
  • To repair damaged casing in closed holes.

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September 2017
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