Special Clearance - HRS Centralizer

High Restoring force for Horizontal Wells

This type is special design centralizer for use in highly deviated and horizontal well where zero starting & running force and very high restoring force are required, Asta developed this type centralizer to combined the application in field between closed tolerance and high restoring force required. Available as Slip On and Latch On Type , and available in all sizes ranging from 3 1/2” to 13-3/8” for any hole combination.

Products features include :

  • Designed to far exceed API Specification 10D for high restoring forces.
  • highly deviated and horizontal well where low running force and very high centering force are required.
Table 1: Centralizer Product Specification
Casing Size (in) Hole Size (in) Number of Bow Band ID (in) Average Bow OD (in) Max. Starting / Running Force (lbf) Min. Restoring Force at 67% stand off (lbf)
API Asta API Asta
3-1/2 6 4 3.700 5.950 396 0 396 2800
4 6 4 4.200 5.950 454 0 454 2000
4-1/2 6 4 4.700 5.950 464 0 464 2300
4-1/2 8-1/2 4 4.700 8.450 464 0 454 2000
7 8-1/2 6 7.200 8.450 1040 0 1040 2700
7 9-1/2 6 7.200 9.450 1040 0 1040 2500
9-5/8 12-1/4 6 9.840 12.200 1600 0 1600 300
13-3/8 17-1/2 8 13.600 17.400 2440 0 1220 2600
Notes: Other size & requirement are available based on request.

Ordering Suggestions
To assure the correct size and type of equipment is obtained, please specify:
1. Casing O.D on which the equipment will be used.
2. Hole size or casing I.D in which the equipment will be placed.
3. Any restriction through which the equipment will be run.

Product Picture

Special Clearance - HRS Centralizer