Single Piece Centralizer
The Single Piece Centralizer (often called a Solid Body Centralizer) is a robust tool designed to ensure the casing string remains centered within the wellbore. The superior strength and fluid dynamics of the One Piece Centralizer make it the preferred, often required, choice for challenging and high-value wells where a failure in centralization would lead to costly remedial work. Choose Puyang Zhongshi Group Co Ltd to be your reliable partner!
what is a Single Piece Casing Centralizer?
The Single Piece Centralizer (often called a Solid Body Centralizer) is our premium centralization solution, designed to deliver uncompromising casing standoff in challenging drilling environments. Unlike hinged or welded bow-spring centralizers, our Single Piece design is machined from a single piece of high-grade steel, eliminating all weak points and ensuring the highest possible structural integrity and maximum restorative force. When conventional centralizers reach their limit, our Single Piece Centralizer ensures the casing is perfectly centered, guaranteeing a uniform cement sheath and reliable zonal isolation.
key features of one-piece centralizer
- Monolithic Construction: Precisely CNC-machined from a single billet of steel (or composite material). Eliminates risks associated with welds, hinges, or mechanical joints, offering superior resistance to shock and axial loads.
- High Restorative Force: Designed with overlapping vanes that provide maximum standoff and restorative force per API 10D standards. Ensures the casing is perfectly centered even in washouts, soft formations, and high-side horizontal sections.
- Low Friction Running: Vanes are optimized with a steep leading angle and often feature hard-facing or roller systems. Minimizes drag and torque, reducing the risk of sticking and enabling the casing string to reach Total Depth (TD) quickly and safely.
- Enhanced Fluid Dynamics: Spiral, straight, or paddle vanes create a swirling (vortex) motion in the cement slurry. Promotes turbulent flow, effectively displacing mud cake and ensuring the cement covers of the annulus for a perfect bond.
- Designed for Rotation: The robust, continuous structure is inherently suited for high-RPM casing rotation during cementing. Maximizes the mud removal benefits achieved by tools like the Top Drive Rotating Cement Head (TDCH).
one-piece centralizer suitable for
The Single Piece Centralizer is the assurance policy for the most demanding well construction projects. We recommend this premium solution for:
Extended Reach & Horizontal Wells: Where lateral friction and gravity severely challenge casing standoff.
Deepwater and Ultra-Deep Wells: Where high combined axial and compression loads require tools with zero structural weaknesses (API 8C standards support this reliability).
High-Pressure, High-Temperature (HPHT) Wells: Where the tools must maintain performance under intense thermal and mechanical stress.
Wells Utilizing Rotating Cementing: Its superior rigidity and construction are optimized to work seamlessly with the rotation capabilities of a Top Drive Cementing Head (TDCH), maximizing mud displacement.
data sheet of single piece casing centralizer
| Size (in) |
ID | OD (mm) |
ID (mm) |
Length (mm) |
Part No. |
|---|---|---|---|---|---|
| 4 | 5 | 130 | 105 | 300 | HW04120600 |
| 4-1/2 | 5-3/4 | 149 | 118 | 300 | HW04120600 |
| 4-1/2 | 6 | 149 | 118 | 300 | HW04120600 |
| 5 | 6 | 156 | 131 | 300 | HW05000778 |
| 5-1/2 | 8-1/2 | 215 | 143 | 305 | HW05120812 |
| 7 | 8-1/4 | 215 | 183 | 350 | HW07000814 |
| 8-1/2 | 220 | 183 | 350 | HW07000812 | |
| 8-3/4 | 225 | 183 | 350 | HW07000834 | |
| 9-7/8 | 255 | 183 | 350 | HW07000978 | |
| 7-5/8 | 9-7/8 | 255 | 196 | 365 | HW07580978 |
| 8-5/8 | 11 | 282 | 223 | 350 | HW08581100 |
| 12-1/4 | 318 | 223 | 350 | HW08581214 | |
| 9-5/8 | 11 | 285 | 248 | 400 | HW09581100 |
| 11-5/8 | 302 | 248 | 400 | HW09581158 | |
| 11-3/4 | 305 | 248 | 400 | HW09581134 | |
| 12-1/4 | 318 | 248 | 400 | HW09581214 | |
| 10-3/4 | 12-1/2 | 320 | 248 | 400 | HW09581212 |
| 13-1/2 | 350 | 278 | 444 | HW10341214 | |
| 14-3/4 | 375 | 278 | 444 | HW10341312 | |
| 11-3/4 | 14-3/4
15-2/1 |
375 395 |
303 303 |
450 450 |
HW10341434 HW10341512 |
| 13-3/8 | 17-1/2 | 435 | 348 | 450 | HW13381712 |
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Single Piece Centralizer
why choose puyang zhongshi co ltd?
Premier Authority and Most Capable Supplier in Oilfield
Established in 1996 through the SINOPEC Central Plains Oilfield restructure, Puyang Zhongshi Group Co Ltd operates with a registered capital of 130 million RMB and an annual output of 200 million RMB. We employ over 580 staff, including 160+ technical experts.
Our main product is Oil Machinery, supported by over 10 specialized companies (including cementing tools, pumping units, and wellhead systems) and five international trade departments. For cementing tools, we have a robust monthly capacity of 500 sets of float equipment and 30,000 centralizers.
We have built long-term strategic partnerships across major global markets, including USA, Russia, Kazakhstan, Sudan, Indonesia, Iran, and Venezuela.
fully certified by API & ISO
The API (American Petroleum Institute) certifications our company Puyang Zhongshi Group holds are excellent and position us very strongly in the global oil and gas market. They provide an authoritative, third-party validation of our product quality and system reliability.
Having the API Q1 certification immediately places our company Puyang zhongshi group co ltd in the top tier of suppliers. Many smaller manufacturers only hold ISO 9001, but the Q1 certification signals a commitment to the oil and gas industry’s most demanding quality requirements, especially relevant for services and complex equipment.
Supplier of the SLB, Halliburton & Baker Hughes
We are the stable supplier of the International Big Three—Schlumberger, Halliburton, and Baker Hughes. Our established partnership with these global leaders means our products and services are proven to meet the industry’s most rigorous standards. Our clients include many top oil service companies in the world.
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