Steel-Cement Interfacial Nanobond Surface Treatment
SCIN is a nanocomposite surface treatment for enhancing the interfacial bond between steel and cement. In the energy exploration field, poor interfacial bonding can result in dangerous well blowouts with catastrophic accidents. In addition, monitoring of the steel-cement bond is dependent upon acoustic measurements and accuracy of Cement Bond Logs (CBL).
SCIN creates a permanent, extremely hydrophilic surface which improves CBL accuracy and can prevent unnecessary cement remediation operations. By increasing the wettability of the exterior of oil well casing, SCIN acts as chemically active surface that binds to Portland cement. SCIN vastly improves the acoustic steel-cement coupling, enabling far more accurate acoustic bond integrity measurements.
SCIN doubles the wettability of steel when treated, which helps improve a cement bond strength by more than 30%. SCIN also imparts 10% better corrosion resistance to the treated substrate and significantly improves CBL result clarity.
Working with Shell, Oceanit has successfully scaled and field tested SCIN in both unconventional and deepwater environments. Production was scaled rapidly within existing Shell facilities and in under 15 months was able to support successful trials in the Marcellus play in Appalachia and the Gulf of Mexico. SCIN has been applied to over 7000 ft. of pipe ranging from 5-inch to 16-inch diameters. Post-job cement evaluation logs by a variety of techniques show a consistent improvement in acoustic coupling between the steel well casing and Portland cement.
