Bow Spring Centralizer
Description
Designed to equip pipe-type casing strings in compliance with TU 14-161-163-96 and GOST 632 for centralization during going in the well and cementing of the hole sections.
Centralizer ZHB 10.25.00.000/(А) is designed to run liner Ø4 in (102 mm) in borehole Ø4.882 in (124 mm).
Centralizer ZHB 20.41.00.000/(А) is designed to run liner Ø4-1/2 in (114 mm) in borehole Ø5.630 in (143 mm).
Characteristics
| No. | Parameter | Value | ||||||||||
| ZHB 10.25.00.000 | ZHB 10.25.00.000А | ZHB 10.25.00.000 B | ZHB 20.41.00.000 | ZHB 20.41.00.000 А | ZHB 20.41.00.000 B | |||||||
| 1 | Starting load, lbf (kgf), not more than | 404.7 (183.5) | 449.6 (204) | |||||||||
| 2 | Radial load, lbf (kgf), not less than | 449.6 (203.9) | 1,416 (642.4) | 449.6 (203.9) | 1,416 (642.4) | |||||||
| 3 | Inner diameter, in (mm), not more than | 4.095 (104) | 4.567 (116) | |||||||||
| 4 | Outer diameter, in (mm), not more than | 5.512 (140) | 6.181 (157) | |||||||||
| 5 | Length, ft (mm) | 1.312 (400) | 1.477 (450) | |||||||||
| 6 | Number of ribs, ea | 6 | 6 | |||||||||
| 7 | Weight, lb (kg), not more than | 5.072 (2.3) | 5.513 (2.5) | 5.072 (2.3) | 5.513 (2.5) | 5.072 (2.3) | 5.513 (2.5) | |||||
| 8 | Fastening screws availability | - | + | - | - | + | - | |||||
| No. | Parameter | Value | ||
| ZHB 20.42.00.000 | ZHB 40.25.00.000 | ZHB 40.25.00.000А | ||
| 1 | Starting load, lbf (kgf), not more than | 449.6 (203.9) | 517.1 (234.5) | |
| 2 | Radial load, lbf (kgf), not less than | 449.6 (203.9) | 1,686 (764.8) | |
| 3 | Inner diameter, in (mm), not more than | 4.567 (116) | 5.118 (130) | |
| 4 | Outer diameter, in (mm), not more than | 6.496 (165) | 7.008 (178) | |
| 5 | Length, ft (mm) | 1.477 (450) | 1.641 (500) | |
| 6 | Number of ribs, ea | 6 | ||
| 7 | Weight, lb (kg), not more than | 6.395 (2.9) | 7.718 (3.5) | 6.395 (2.9) |
| 8 | Fastening screws availability | - | - | + |