Skip to content 
Drill Pipe 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.
Features
- Robust Construction: Made from high-strength materials designed to withstand harsh drilling conditions.
- Crimped or Welded Design: Centralizers can be crimped or welded to the drill pipe for secure attachment and load transfer.
- API Compliance: Engineered to meet API 10D standards, ensuring reliability and performance in various applications.
- Low Running Resistance: Designed to minimize drag during installation, facilitating smoother operations.
- Versatile Sizing Options: Available in multiple sizes to fit different drill pipe diameters, with custom sizes upon request.
Applications：
Drill pipe centralizers are essential for maintaining well integrity, improving cementing quality, and enhancing overall drilling performance. They help reduce wear on both the drill pipe and wellbore, leading to increased operational efficiency and reduced costs.
| 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 |
