Specification
| Size | Casing size (mm) | Hole Size (mm) | Inner Diameter (mm) | Outer Diameter (mm) | Height(mm) |
| 4″ | 102 | 104 | 118 | 80 | |
| 4-1/2″×6″ | 114 | 152 | 119 | 146 | 100 |
| 5″ | 127 | 130 | 151 | 120 | |
| 5-1/2″×8-1/2″ | 140 | 216 | 142 | 210 | 120 |
| 7″×8-1/2″ | 178 | 216 | 182 | 210 | 120 |
| 7″×9-1/2″ | 178 | 241 | 182 | 236 | 120 |
| 9″ | 229 | 247 | 305 | 120 | |
| 9-5/8″×12-1/4″ | 244 | 311 | 249 | 308 | 120 |
| 10¾” | 273 | 276 | 308 | 120 | |
| 13″ | 330 | 343 | 400 | 130 |
Description
Composite Centralizer Casing are unique special purpose centralizers because of its design. These centralizers are designed for running casing in unusually irregular wellbores, for guiding the casing and providing the maximum flexibility for the casing string. These centralizers are not fixed to the casing. It rotates up and down by the use of Stop Collar. It somehow works like a bearing and greatly reduce the torque which is necessary to rotate the casing. All Centralizers are stored painted or coated with polyester powder. They are available in all sizes ranging from 3 1/2″ to 20″ for any hole combination. Any special size can be made available on request.
The Composite centralizer is made of advanced composite that has a low coefficient of friction and is heat resistant and highly durable. This material performs reliably in extreme wellbore conditions. With its smooth, durable, tapered construction.
The centralizer can easily pass obstructions in the wellbore, so it is well suited for horizontal applications.
Composite Casing Centraliser is the ultimate in down-hole centralisation, offering field proven lower friction coefficients leading to superior drag and rotational torque reduction. High abrasion resistant proprietary engineered polymer ensures maximum stand-off at TD. Robust enough to meet the challenges of today’s most demanding wells.
Feature
- 1.The one-piece composite construction can withstand high-impact loading and resist wear in high temperatures;
- 2.The passive blade configuration capitalizes on the sled effect to minimize drag forces while running pipe. The blades glide smoothly on the low side of the wellbore and freely over obstructions;
- 3.The hydrodynamic shape of the blades enables optimal displacement during primary cementing, which minimizes pressure drop and increases local turbulences across the centralizer;
- 4.The composite is ultra hard and extremely durable, which enables the centralizer to maintain integrity in extreme wellbore temperatures;
- 5.The lightweight construction allows for easier and safer handling when making up casing.
Application
- Vertical, deviated, and horizontal wells
- Extended-reach wells and wells with high dogleg severity
- Wells with temperatures up to 350°F (177°C)