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Cementing tools hinged non bow spring Rigid centralizer/welded spring casing centralizer.
Casing centralizer as a cementing tool is applied in vertical, deviated and horizontal wells to centralize casing for improving the cementing quality. The cement could be concreted firmed between casing and borehole wall. It can be installed on casing joint or any position working with stop collar for centralizing.
Description Of 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 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. Spring Centralizer Main Features • The hinged bow spring centralizer combines collar and bow, the bow is a good role in restoring force.
• Traditional bow spring centralizer, the features are low price, easy installation and shipment.
• There are two kinds of bow spring centralizers, hinged type and slip on (Non weld).
• We have hinged non welded bow spring centralizer and hinged welded bow spring centralizer.
• We have single bow spring centralizer and double bow (dual contact) bow spring centralizer, although these two kinds of centralizers have a similar function, many customers use the single bow spring centralizer as their first choice.
• Powder baking coating.
Popular Specifications of Bow Spring Centralizers
Size (inch) | Bow Quantity | Outside Diameter | Inner Diameter | Overall Length |
4-1/2" × 6" | 4 | 160 | 116 | 450/575 |
4-1/2" × 6-1/4" | 4 | 167 | 116 | 450/575 |
4-1/2" × 7-7/8" | 4 | 210 | 116 | 450/575 |
4-1/2" × 8-1/2" | 4 | 230 | 116 | 450/575 |
5" × 6" | 4 | 160 | 128 | 450/540 |
6" × 6-3/4" | 4 | 180 | 128 | 450/575 |
5" × 7-7/8" | 4 | 210 | 128 | 450/575 |
5-1/2" × 7-7/8" | 5 | 210 | 140 | 450/575 |
5-1/2" × 8-1/2" | 5 | 216/245 | 140 | 450/575 |
5-1/2" × 8-3/4" | 5 | 222/250 | 140 | 450/575 |
5-1/2" × 9-7/8" | 5 | 251/264 | 140 | 450/575 |
5-1/2" × 9-1/2" | 5 | 242/264 | 140 | 450/575 |
7" × 8-1/2" | 6 | 216/230 | 179 | 450/575 |
7" × 8-3/4" | 6 | 222/233 | 179 | 450/575 |
7" × 9-1/2" | 6 | 242/264 | 179 | 450/575 |
7" × 9-7/8" | 6 | 251/264 | 179 | 550/650 |
9-5/8" × 12-1/4" | 8 | 346 | 245 | 550/650 |
9-5/8" × 13-3/8" | 8 | 346/352 | 245 | 550/650 |
9-5/8" × 12-13/16" | 8 | 378 | 245 | 550/650 |
10-3/4" × 14-3/4" | 9 | 405 | 275 | 550/650 |
10-3/4" × 15-1/2" | 9 | 374 | 275 | 550/650 |
13-3/8" × 17-1/2" | 10 | 440/466 | 342 | 550/650 |
13-5/8" × 17-1/2" | 12 | 440/466 | 342 | 550/650 |
20" × 26" | 12 | 696 | 510 | 550/610/650 |