API Oil Well Drilling Accessories Bow Centralizer for Casing
Bow Centralizer
Casing centralizer is used to help center the casing in wellbore, allowing even distribution of the cement around casing during cementing operations. Bow centralizer has high restoring capacity, which is determined by the shape and stiffness of its bows.
Bow centralizer has 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. is a manufacturer and supplier of casing accessories, cementing tools and downhole tools. Our factories have many years experiences of manufacturing oilfield equipment and accessories. We have over 10 years importing & exporting experiences in oil & gas industry.
Our main products:
1. Casing centralizers: bow spring centralizers, rigid centralizers, semi-rigid centralizers, one piece centralizers, polymer centralizers, hollow vane centralizers, aluminum centralizers, roller centralizers, slip on centralizers, hinged centralizers, welded/non-welded centralizers, stop collars, etc.
2. Cementing tools: float equipment (float collar, float shoe, guide shoe), cementing plugs, cement baskets, cement heads, stage collars, etc.
3. Downhole tools: casing & tubing couplings, pup joints, sucker rod guides (centralizers), sucker rods, drill collars, etc.
We are committed to providing high-quality and cost-effective products and services to our customers in oilfield industry.
Hope to establish a long-term partnership with you!
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