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Casing centralizer is a cementing tool which applied to centralize casing to improve the cementing quality.
Bow-spring casing centralizer is mainly used in vertical or slightly deviated wells. Bow-spring centralizer consists of couplings, bow spring strips and pins .Designed for High Restoring Force and Low Starting Force for centralizing the casing pipe in Horizontal and Deviated well.
Premium quality Bows are made of special alloy steel and hot formed in totally controlled heat treatment plant to achieve the uniform hardness all over.
Spec and performance index of bow spring casing centralizer meet API Spec 10D.
The casing centralizer is connected by pin when operation, the unfolded centralizer can be stacked flatly for convenient storage and transportation.
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Centralizer Spec. (in) |
20 |
18-5/8 |
16 |
14 |
13-3/8 |
12-3/4 |
10-3/4 |
9-5/8 |
7-5/8 |
7 |
6-5/8 |
5-1/2 |
5 |
4-1/2 |
|
Casing Size (in) |
20 |
18-5/8 |
16 |
14 |
13-3/8 |
12-3/4 |
10-3/4 |
9-5/8 |
7-5/8 |
7 |
6-5/8 |
5-1/2 |
5 |
4-1/2 |
|
Open Hole Size (in) |
24 26 |
22 24 |
20 22 |
18 |
17-1/2 |
17-1/2 |
12-1/4 |
12-1/4 |
9-7/8 |
8-1/2 |
8 |
1/2 |
6-1/2 |
6 |
|
Max. O.D. (mm) |
650 714 |
590 680 |
550 613 |
484 |
470 |
466 |
370 |
375 |
273 |
252 |
245 |
256 |
190 |
181 |
Bow Spring Centalize:
The Non-Welded Bow Spring Centralizers are made under the sate af art Enineering Techniques and rugged quality system. They are developed to exceed API 10D specification to be used under most demanding condition. These Centralizers are designed for High Restoring Forse and Low Starting Force for centralizing the casing pipe in a Vertical, Horizontal and Deviated well.
Description of Single Piece Bow Spring Casing Centralizer
The Single Piece Bow Spring Casing Centralizer is newly designed integrated steel flexible Centralizer used to centralize casing during the cementing stage of oil wells. Fully integrated (SLIP-ON) centralizers are manufactured in any diameter and as per customer requirements.
The blades, top and bottoms rings are made of one piece to ensure the centralizer s integrity during rig operations.
The specifications comply with API Spec 10D for starting compression, running down hole and expansion force.
These centralizers offer high fatigue strength for axial forces and radial side loads on bows during tubular rotation.
More flexibility as comparison to other spring bow centralizer.
1. Starting and restoring force confirm to API Standard.
2. More flexibility as comparison to other spring bow centralizer
3. Greater centering efficiency
4. Higher Stand Off.
5. 360° wall coverage for increased load bearing area.
Available Size: 4-1/2" to 13-3/8".
The design of double-crested bows produces centralizers that have starting forces far below API 10D along with very low drag forces, allows the centralizer to compress in order to get through tight spots and severe doglegs that may be present down-hole.
Compared to conventional bow spring centralizers, double-crested bow provide better standoff for more effective mud removal, which enhances the primary cement job and zonal isolation.
Shipping way:
1.All products are protected with thread protector
2.Wooden case, or customized packing.
3.Delivery: By truck, train, air, sea,express
How can I place order?
A: You can contact us by email about your order details, or place order on line.
How can I pay you?
A: After you confirm our PI, we will request you to pay. T/T (HSBC bank), L/C, D/P, Western Union are the most usual ways we are using. If you want to use other way, please tell me, we can discuss.
What's the order procedure?
A: First we discuss order details, production details by email or TM. Then we issue you an PI for your confirmation. You will be requested to do pr-epaid full payment or deposit before we go into production. After we get the deposit, we start to process the order. We usually need 7-15days if we don't have the items in stock. Before production has been finished, we will contact you for shipment details, and the balance payment. After payment has been settled, we start to prepare the shipment for you.
How do you take care when your clients received defective products?
A: replacement. If there are some defective items, we usually credit to our customer or replace in next shipment.
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