- Electro-chemical/chemical surface treatment process
- No changes required to normal pipe handling equipment/procedures
- Water-based
- Non-toxic, after application
SCIN Application
SCIN directly addresses the issue of steel hydrophobicity and steel-cement interfacial bond strength. By creating a super-hydrophilic surface, SCIN chemically reacts to Portland cement to create a more effective adhesion on steel pipes.
In addition, SCIN-treated steel significantly improves the accuracy of acoustic cement evaluation results, showing a consistent improvement in acoustic coupling between casing and cement.
Field Tests
Interfacial Bond Strength
Cement barriers provide zonal separation between well bore and casing pipe. Uniform cement-casing pipe interface is required, but often this bonding is disrupted for a variety of reasons.
Steel Hydrophobicity
Steel is naturally hydrophobic, with water droplet contact angles of 90 degrees or more. This hydrophobicity creates poor adhesion of water-based cement to steel or mill-varnished steel.
SCIN-Treated Steel
SCIN dramatically improves the wettability and adhesion of treated steel. In tests, the contact angle of water droplets was reduced to 20 degrees, improving the interfacial bond between cement and steel.
SCIN Characteristics
SCIN has successfully field tested in both unconventional and deepwater environments, applied to over 5200 ft. of pipe ranging from 5-inch to 16-inch diameters.
- Stable & functional under extreme pressures
- Stable & functional under extreme temperatures
- Non-insular, transfers heat
- Applicable to all metallic surfaces/substrates
- Oleophilic
- Hydrophilic
- Improvement in acoustic cement evaluation
- Scalable process for tubulars, valves, and components
SCIN Cost Savings
Oil and gas operators spend millions of dollars per year on unnecessary remedial cementing attempts
Sonic cement evaluation logs have been used since the late 1950s to quantify the presence of cement behind casing. The bond between casing and cement placed in the annulus is a critical component of wellbore construction. Bond integrity is inferred after the cement has cured, using acoustic methods well-known in the industry. This evaluation is dependent on the acoustic coupling between the cement and the pipe.
However, if the acoustic coupling is weak, non-existent, or has been damaged by operations such as pressure testing or stimulation treatments, the cement may be present but cannot be properly evaluated, leading to ambiguous conclusions and ultimately unnecessary remedial cementing.
In addition to vast bond-strength improvement, SCIN-treatment significantly improves the accuracy of acoustic cement evaluation results, eliminating unnecessary cement remediation costs which can range from $100k to well over $10M per well.
Get in touch about Oceanit products
If you have any questions about SCIN, please send us a message using the form to the right.
To learn more about any of Oceanit’s other functional coatings & surface treatments, or our any of our other products, please visit Oceanit’s corporate website.
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