Stop Collars
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- Hinged Spiral Nail Stop Collar
PRODUCTS
- Wire Scratcher (WS-055)
- Hinged Set Screw Stop Collar (WS-056)
- Hinged Spiral Nail Stop Collars (WS-057)
- Hinged Bolted Stop Collars (WS-059)
- Slip On Set Screw Stop Collar (WS-060)
Wire Scratcher (WS-055)
Scratchers can be installed to scrape excessive mud cake deposited over permeable hole sections. These accessories are attached between stop rings, allowing a certain amount of ‘travel’ during reciprocation of pipe in the cementing stage. The wire and cable types are most commonly used. The design differs according to the casing cementing mode, i.e. whether or not movement (rotation/reciprocation) is exercised during cement displacement and/or prior circulation.
Available sizes are 4-1/2” to 13-3/8”. Any special sizes as per customer requirement.
Hinged Set Screw Stop Collar (WS-056)
Hinged Set Screw are made up of two pieces and hinged at the two ends making it 180 degrees apart. The gripping force is applied by one of the row of Set screw which tightens the collar to the casing firmly. They can be fastened on to the casing pipe and much easy to install. They are most effective in conditions where there is low annual clearance.
The screw lock gives a firm grip to the stop collar and when tested as per API 10D-2 Specifications they provide high holding force.
Available sizes are 4-1/2” to 30”. Any special sizes as per customer requirement.
Hinged Spiral Nail Stop Collars (WS-057)
Hinged Spiral Nail types has internal grooves onto which the specially designed Spiral nail fasten onto the casing pipe. Collars are hinged at two places 180 degrees apart and one spiral nail in each half is driven between collar and the casing. It can be latched on the casing pipe without having to be slipped on. These are most effective where low annular clearance is encountered.
The spiral nail gives a firm grip to the stop collar and when tested as per API 10D-2 Specifications they provide high holding force.
Available sizes are 4-1/2” to 30”. Any special sizes as per customer requirement.
Hinged Bolted Stop Collars (WS-059)
Hinged Bolted types has cross bolt locking system with one go locking for easy installation. This is a single piece collar and the set crews are provided on the outer circle of the periphery which is meant for installing and is directly installed on the pipe by slipping on the casing without any hassle. It is fabricated using ductile iron therefore it has a good impact and fatigue capability. These kinds of collars are used in place where high axial loads are expected.
The bolt lock gives a firm grip to the stop collar and when tested as per API 10D-2 Specifications they provide high holding force.
Available sizes are 4-1/2” to 30”. Any special sizes as per customer requirement.
Slip On Set Screw Stop Collar (WS-060)
Slip on Set Screw Stop Collar is of one-piece high strength corrosion resistant alloy collar and the gripping force is applied by one row of Set Screws.
The outside ends of these collar are generally tapered to a degree which helps to hold the centralizer and avoid the ends to hit the Bows or Vanes when the centralizers are placed over them.