CableShield | SLB

CableShield wireline-compatible acid

Extend the lifetime of wireline cable and improve efficiency during acid spearheading operations

3D illustration of a StreamLINE polymer-locked wireline cable.
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The patent-pending inhibitor chemistry of CableShield™ wireline-compatible acid prevents acid and electrochemical corrosion by depositing a protective coating over any exposed galvanized improved plow steel cable armors. To ensure the cable remains intact and ductile, the formula was developed specifically to protect the zinc layer present in StreamLINE™ polymer-locked wireline cables. CableShield acid also provides electrochemical corrosion protection from produced water, extending the life of surface pressure equipment and treating iron. The acid is compatible with conventional equipment, blending processes, and additives.

Wireline-compatible spearhead acid for hydraulic fracturing in unconventional reservoirs completed with pumpdown perforating

With conventional techniques, wireline cables can break prematurely because of cable armor corrosion. With CableShield acid, the wireline remains intact significantly longer, which enables operators to perform an average of four additional stages of hydraulic fracturing each day on the pad—a 20% to 25% increase in time efficiency that leads to a reduction in operating costs. Additionally, CableShield acid saves approximately 12,500 bbl fluid per well (based on a 2-mi lateral well) compared with conventional spearhead acid. The acid decreases perforation cluster breakdown pressure and eliminates excessive water volumes.

• Patent-pending inhibitor chemistry that prevents acid and electrochemical corrosion

• Protective coating deposition to protect cable armor

• Compatibility with conventional equipment, blending processes, and additives

With 4 additional fracturing stages per day, efficiency increases 20-25% and saves 12,500 bbl fluid.
Photos compare wireline, HCl-corroded wireline, and intact CableShield acid-treated wireline.
The corrosion protection provided by CableShield wireline-compatible acid (1) to wireline cable (2a) is evidenced by comparison of the corrosion produced by exposure to 28% HCl (2b) and the intact cable armors of a cable run with CableShield acid.