API Standard Spring Bow Casing Centralizer for Oil Well Drilling
Bow Spring Centralizers
Casing centralizers are used to help center the casing in wellbore, allowing even distribution of the cement around casing during cementing operations. Bow spring centralizers has high restoring capacity, which is determined by the shape and stiffness of its bows.
Slip On Spring Bow Casing Centralizers have smooth continuous bow profile and lack of hinged collar. It is used in most types of well designs and wells with less stringent well design requirements, when increased structural integrity is required, and used in close tolerance well designs.
Features
• The end collars are slip on types for maximum structural toughness;
• Mostly be used in vertical or slightly deviated wells;
• Be anti-corrosive after special coating process;
• Has high restoring force and low starting and running force;
• Be capable to pass through narrow hole sections and expand in the targeted locations.
Parameters
Model
(inch) |
Hooping ID
(mm) |
Hooping thickness
(mm) |
Total length
(mm) |
Max. OD
(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 |
About Us
Zhengzhou Maierda Petroleum Equipment Co., Ltd., located in Central China, is a professional supplier of petroleum tools. We have more than 15 years experiences of manufacturing Cementing Accessories and equipment, and more than 10 years importing & exporting experiences in oil & gas industry.
We are specialized in downhole tools including Slip On Spring Bow Casing Centralizers, casing centralizers, sucker rod centralizers (guides), Stop collars (rings), float equipment, stage collars, cementing plugs, cement heads, cement baskets, casing & tubing couplings, hammer unions, polished rod clamps, sucker rods, pup joints, drill pipes, drill collars, etc.
We guarantee the highest standards in customer service, client satisfaction, and quality product delivery in the oilfield industry.
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