Brand:qingdaozhifeng
Model:double
cementing tools of bow spring centralizer
Our company is the original factory in Qingdao Petroleum Machinery Factory, and in 2008 passed American petroleum institute quality management system of preference API SPEC Q1 (REGISRATION NO.Q1-0637)and ISO/TS 29001(REGISRATION NO.TS-0469) and ISO9001(REGISRATION NO.0885)international quality system certification.
Centralizer
The casing centralizer is divided into rigid casing centralizer, roller rigid centralizer, aluminium
centralizer used in horizontal well, single or double bow spring centralizer. Rigid centralizer is
casted by 45# steel with aluminium alloy steel, the non-welded bow spring centralizer
are made by special alloy steel 65Mn, it is woven to avoid the mass defect by welding!
Roller rigid centralizer
In the cementing , the wheel roll between the casing and wall of well to reduce the friction,
which ensure the casing can be put in the designed place smoothly!
Bow spring centralizer
specification mm (in) | Well diameter Mm (in) | Wide of spring(mm) | Thickness of spring | Amount of spring | remark |
114(4 1/2) | 152,159,200 (6, 6 1/4, 7 7/8) | 30 | 4 | 5 |
|
127 (5) | 171,200 (6 3/4,7 7/8) | 30 | 4 | 5 |
|
140(5 1/2) | 200,222,251 (7 7/8,8 3/4,9 7/8) | 30 | 4 | 6 |
|
168 (6 5/8) | 222 (8 3/4) | 30 | 4 | 6 |
|
178 (7) | 222,251 (8 3/4,9 7/8) | 35 | 4 | 6 |
|
194 (7 5/8) | 244,251 (9 5/8,9 7/8) | 40 | 4 | 6 |
|
219 (8 5/8) | 311 (12 1/4) | 40 | 4 | 8 |
|
244 (9 5/8) | 311 (12 1/4) | 40 | 4 | 8 |
|
273 (10 3/4) | 375 (14 3/4) | 45 | 4 | 10 |
|
298 (11 3/4) | 394 (15 1/2) | 45 | 4 | 10 |
|
340 (13 3/4) | 444 (17 1/2) | 50 | 4 | 10 |
|
