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Semi-Rigid Centralizer
Bow Spring Centralizers are critical tools used in the oil and gas industry to maintain the central position of casing within a wellbore during cementing operations. Their unique design, resembling a bow, allows for effective stabilization of the casing, ensuring uniform annular clearance and minimizing friction while running casing.
Semi-Rigid Centralizer
- Spring Steel Construction: Bows are made from spring steel and undergo standard heat treatment for enhanced durability and stability.
- Hinged Connection: Allows for local assembly, reducing shipping costs.
- Crimp Connection: Bows are securely attached to end collars using a crimp connection.
- Double Bow Design: Provides improved performance and centralization.
- API Compliance: Products meet API standards.
Options
- Engineering Support: Access to a dedicated engineering support team.
- Custom Configurations: Bow configurations available in various heights and sizes for specialized applications.
- Special Sizes Available: Custom sizes can be manufactured upon request.
| Popular Specifications of Bow Spring Centralizers | ||||
| Size (inch) | Bow Quantity | Outside Diameter | Inner Diameter | Overall Length |
| 4-1/2″ × 6″ | 4 | 160 | 116 | 450/575 |
| 4-1/2″ × 6-1/4″ | 4 | 167 | 116 | 450/575 |
| 4-1/2″ × 7-7/8″ | 4 | 210 | 116 | 450/575 |
| 4-1/2″ × 8-1/2″ | 4 | 230 | 116 | 450/575 |
| 5″ × 6″ | 4 | 160 | 128 | 450/540 |
| 6″ × 6-3/4″ | 4 | 180 | 128 | 450/575 |
| 5″ × 7-7/8″ | 4 | 210 | 128 | 450/575 |
| 5-1/2″ × 7-7/8″ | 5 | 210 | 140 | 450/575 |
| 5-1/2″ × 8-1/2″ | 5 | 216/245 | 140 | 450/575 |
| 5-1/2″ × 8-3/4″ | 5 | 222/250 | 140 | 450/575 |
| 5-1/2″ × 9-7/8″ | 5 | 251/264 | 140 | 450/575 |
| 5-1/2″ × 9-1/2″ | 5 | 242/264 | 140 | 450/575 |
| 7″ × 8-1/2″ | 6 | 216/230 | 179 | 450/575 |
| 7″ × 8-3/4″ | 6 | 222/233 | 179 | 450/575 |
| 7″ × 9-1/2″ | 6 | 242/264 | 179 | 450/575 |
| 7″ × 9-7/8″ | 6 | 251/264 | 179 | 550/650 |
| 9-5/8″ × 12-1/4″ | 8 | 346 | 245 | 550/650 |
| 9-5/8″ × 13-3/8″ | 8 | 346/352 | 245 | 550/650 |
| 9-5/8″ × 12-13/16″ | 8 | 378 | 245 | 550/650 |
| 10-3/4″ × 14-3/4″ | 9 | 405 | 275 | 550/650 |
| 10-3/4″ × 15-1/2″ | 9 | 374 | 275 | 550/650 |
| 13-3/8″ × 17-1/2″ | 10 | 440/466 | 342 | 550/650 |
| 13-5/8″ × 17-1/2″ | 12 | 440/466 | 342 | 550/650 |
| 20″ × 26″ | 12 | 696 | 510 | 550/610/650 |
