ULTRA-CLEAN Casing Scraper
Clean wellbore with minimum wear to casing ID
The Sharp Razor ULTRA-CLEAN nonrotating casing scraper is used to remove mud or cement sheath, rust, mill scale, paraffin, and similar substances from the casing inner diameter (ID). This is especially important in precompletion stages where tight tolerance equipment will be run. These scrapers are also a very effective component of the bottomhole assembly (BHA) when making gauge runs.
The tool’s standard operating mode is in the nonrotating position. The 360° coverage blades and stabilizers remain stationary while the drillpipe can be rotated for long periods during circulation to clean the wellbore. This feature allows maximum casing cleaning without wearing the casing ID. In the case that the scraper becomes stuck, straight overpull will shear a ring and allow the safety clutch to engage, putting the scraper in the rotating mode, allowing it to be worked free using torque, overpull, circulation, and jarring.
The tool is designed with ample circulation area to allow for high-rate circulation and bypass of debris. It has a rugged design and contains no external bolts that could work loose under extreme conditions. For this reason, casing scraper is recommended for use when drilling cement on the cleanout run.
The tools can be conveniently converted with dress-off mill to allow for cleaning the liner top and casing ID in one trip.
Application
Unconventional hydrocarbons
Conventional oil and gas
Deep water
Wellbore cleanup
Displacement
Features and Benefits
Nonrotating stabilizers and blades
Eliminates risk of damage to casing when rotating or drilling
Safety clutch design
Allows tool to work free if stuck in hole
No external fasteners
Avoids leaving parts downhole
Blade with 360° coverage
Provides high cleaning effectiveness
Hard metal applied to blade edge
Provides endurance and maximum service
Dress-off mill option
Allows for cleaning casing ID and liner top in one trip
