Casing Repair | SLB

Casing Repair

Restore completion integrity after casing damage

Concrete blue texture

Use through-tubing technology to rapidly remediate corroded and worn casing

Casing damage is often considered a problem of mature wells, suffered only after years or decades of corrosion, erosion, or wear fatigue, However, it is increasingly occurring in newer wells because of the wear incurred while installing initial casing in long horizontal and tortuous wellbores.

Casing repair options depend on the size and condition of the casing, the depth and extent of the leak or damage, and the productivity (economics) of the well. Schlumberger offers a full range of casing isolation, repair, and replacement technologies.

A pipe cut with PowerCutter.

Isolate the Damage

Squeeze cement into the damage to restore isolation without impeding wellbore ID, or place a cement plug or mechanical packer or plug to isolate the damaged zone.

  • SqueezeCRETE slurry penetrated and filled the entire narrow slot providing a complete, effective seal during the 120-um narrow-slot test
    Remedial cementing solution

    Repair extremely small gaps or fractures in wellbores at the microscale. View

  • BluePlug Max CMR high-pressure wireline- or tubing-set cement retainer
    BluePlug Max CMR
    High-pressure wireline- or tubing-set cement retainer

    Bidirectional barrier in cased hole wells for well abandonment or remedial cementing below the retainer. View

Patch the Casing

Run a patch through tubing across the damaged zone, and isolate the damaged casing by cementing it in place or inflating it to create a complete seal while retaining nearly full wellbore ID.

  • Downhole expansion tool positioned within a Saltel expandable steel patch.
    Expandable Steel Patches
    Repair and remediation solutions

    For oil and gas well casing leak repair, perforation shutoff, and tubing repair and geothermal well integrity restoration. View

Shut Off Perforations

Save time and reduce costs and emissions by using an expandable steel patch to reliably seal off a perforated zone without restricting production from neighboring perforations or access to the wellbore below.

  • Perforation Shutoff Using Expandable Internal Casing Patches: Web page
    Perforation Shutoff Using Expandable Internal Casing Patches

    Field-proven, sustainable, lower-cost alternative to cement squeezing using a rig, snubbing unit, or CT. View

Cut and Reconnect the Casing

Cut off the damaged casing and leave a stub that can be connected to a new casing string.

  • PowerCutter, precision tubular cutter.
    Precision tubular cutter

    Cleanly cut tubing or drillpipe with no moving parts or chemicals. View

  • Casing reconnect system in previous casing string.
    Casing Reconnect
    Metal-to-metal, gas-tight casing repair system

    Simplify casing repairs to keep drilling programs on schedule and secure well integrity for P&A. View