| Customization: | Available |
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| Certification: | ISO 9001:2000, ISO 9001:2008 |
| Surface Treatment: | Spray-Paint |
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Fuction of casing centralizer:
1. Take casing to designed position by reducing sticking while casing going down.
2. Centralize casing in well.
3. Balance liquid pressure in annular space by reducing adhesion phenomenon.
4. Improving replacing ratio of mud and boosting cementing quality by reducing channeling effect.
Casing centralizers help center the casing in the wellbore during the cementing operations, allowing the cement to be evenly distributed around the casing string. The degree to which the casing is centered (standoff) depends on the performance of centralizer and the spacing between the centralizers installed on the casing OD.
7) Function
a. Take casing to designed position by reducing sticking while casing going down.
b. Centralize casing in well.
c. Balance liquid pressure in annular space by reducing adhesion phenomenon.
d. Improving replacing ratio of mud and boosting cementing quality by reducing channeling effect.
8) Features of Bow Spring Casing Centralizers:
a. Designed for high restoring force and low starting & running force
b. The larger bows provide complete centralization in vertical or slightly deviated wells.
c. Due to the flexibility of bows, they can pass through narrow hole sections and expand in the targeted locations.
d. Undergo special coating process to prevent from rust
e. For hinged bow spring casing centralizers, end collars are designed with self-locking action, which are easy to assemble and can be shipped in half assembled condition for less shipping and storage costs.
9) Features for Solid Rigid Casing Centralizers:
a. Shock, impact and corrosion resistant.
b. High tensile and yield strengths.
c. Available with straight or spiral blades.
d. Helps ensure positive centering in deviated or horizontal holes.
e. Helps prevent differential sticking while running casing.
The purpose of the Bow Spring Centralizer, both welded and non-welded, is to help center the casing in the wellbore, allowing even distribution of the cement around the casing during cementing operations. The degree to which the casing is centered depends on the performance of the centralizer and the spacing between the centralizers installed on the casing OD. Bow Spring Centralizers also help reduce casing drag in the wellbore during running operations and prevent differential stroking of the casing. They increase fluid turbulence at the tool, helping to move filter cake from the wellbore. Both welded and non-welded Bow Spring Centralizers can be run through hole restrictions in the bore hole or smaller casing strings that are cemented in the well, which in turn centers the casing below the restriction
Our composite centralizers provide the following benefits:
Reduce total well construction costs - eliminate the need for expensive casing couplings
Enables casing or screen deployment in longer reach wells - industry leading low friction factors reduce torque and drag, enabling the user to reach total depth
Zero corrosion - totally non-metallic material removes the contamination risk to carbon or expensive hi-chrome content steel tubulars and completion equipment
Low wear and material loss - low friction factors and advanced material formulations result in low wear
High impact and side load resistance - longer lasting
Light weight - the size to weight ratio is significantly lower than metallic centralizers which reduces freight and handling costs
Specific OD's can be accommodated - composite material can be machined down to meet requirements.
Features
Spiral blade configuration - provides for optimal stand-off and assists turbulent flow during cementing operations
Zero porosity construction
Suit casing ranges from 4.5 to 10.75 inches
Manufactured to strict ISO 9001-2000 quality standards
Tested to API 10TR5
main specifications for reference:
| Model(in) | Hooping In-Dia.(mm) | Hooping thickness (mm) |
Hooping height(mm) | Total Length(mm) | Max. Out-Dia.(mm) | Spring Pieces |
| 5-1/2*8-1/2 | 142-148 | 3-5 | 90-120 | 650±50 | 225±5 | 5 |
| 7*9-5/8 | 181-186 | 3-5 | 90-120 | 650±50 | 255±5 | 6 |
| 7*8-1/2 | 181-186 | 3-5 | 90-120 | 650±50 | 235±5 | 6 |
| 8-5/8*12-1/4 | 223-228 | 3-5 | 90-120 | 650±50 | 330±5 | 8 |
| 9-5/8*12-1/4 | 250-255 | 3-5 | 90-120 | 650±50 | 330±5 | 8 |
| 10-3/4*12-1/4 | 274-276 | 3-5 | 90-120 | 650±50 | 330±5 | 9 |
| 13-3/8*17-1/2 | 342-347 | 3-5 | 90-120 | 650±50 | 450±5 | 11 |
| 18-5/8*24 | 476±1 | 3-5 | 90-120 | 600±50 | 610±5 | 12 |
| 20*26 | 510±1 | 3-5 | 90-120 | 600±50 | 660±5 | 12 |
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