The bow spring casing centralizer undergoes a complete makeover with a newly designed single-piece construction. This integrated steel flexible centralizer is specifically engineered for casing centralization during the cementing process in oil wells. Customized to meet customer requirements, these slip-on centralizers can be manufactured in any diameter.
To ensure robustness and reliability, the blades, top, and bottom rings are seamlessly forged into a single-piece structure. The centralizers adhere to the API Spec 10D standards for starting compression, downhole running, and expansion force. They exhibit remarkable fatigue strength to withstand axial forces and radial side loads during tubular rotation. Moreover, their flexibility surpasses that of conventional spring bow centralizers.
Key features of the single-piece bow spring casing centralizer include:
1. Compliance with API standards for starting and restoring forces.
2. Greater flexibility compared to traditional spring bow centralizers.
3. Enhanced centering efficiency to promote optimal cementing operations.
4. Increased standoff to minimize the potential for problematic fluid channeling.
5. 360° wall coverage, resulting in an expanded load-bearing area for reliable performance.
Available in a range of sizes, these centralizers can accommodate casing diameters from 4-1/2" to 13-3/8".
3. Parameter of Single Piece Bow Spring Casing Centralizer
| Model (in) | Hooping In-Dia. (mm) | Hooping thickness (mm) | Total length (mm) | Max.Out-Di (mm) | Amount of spring (mm) |
| 5-1/2" x 8-1/2" | 142-148 | 3-5 | 650±50 | 225±5 | 5 |
| 7" x 9-5/8" | 181-186 | 3-5 | 650±50 | 255±5 | 6 |
| 7" x 8-1/2" | 181-186 | 3-5 | 650±50 | 235±5 | 6 |
| 8-5/8 x 12-1/4" | 223-228 | 3-5 | 650±50 | 330±5 | 8 |
| 9-5/8 x 12-1/4" | 250-255 | 3-5 | 650±50 | 330±5 | 8 |
| 10-3/4 x 12-1/4" | 274-276 | 3-5 | 650±50 | 330±5 | 9 |
| 13-3/8"x17-1/2" | 342-347 | 3-5 | 650±50 | 450±5 | 11 |
| 18-5/8"x24" | 475-477 | 3-5 | 600±50 | 610±5 | 12 |
| 20"x26" | 509-511 | 3-5 | 600±50 | 660±5 | 12 |
Company Information
Puyang Zhongshi Group Co., Ltd is a professional manufacturer of various oilfield equipments and cementing accessories since 1997, restructured enterprise of SINOPEC. Our group have 10 years export experience and 9 subsidiary factories, more than 500 employees. We are the first-class supplier of resources market of SINOPEC and CNPC.
We have the certificates of API 5CT, API 10D, API 11E, API 6A, API 11AX, ISO 9001 and ISO 14001. Our foreign customers are mainly from America, Central Asia, Russia, Southeast Asia, Middle East, etc.
