Puyang Zhongshi Group Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 5000 |
| Delivery Time | 15says |
| Packaging Details | wooden case |
| Brand Name | ZS |
| Model Number | ZS |
| Certification | API 11B |
| Place of Origin | China |
View Detail Information
Explore similar products
Hinged Welded Bow Spring Centralizer Bow 4~12 For Oilfield Cementing Equipment
Thermal Plastic Centralizer Shock Resistance Low Friction Low Density
Well Cementing Solid Stemped Spiral Vane Centralizer High Anti-Impact
Heat Treated Drill Pipe Centralizer Alloy Material High Tensile Strength
Product Specification
| Payment Terms | T/T | Supply Ability | 5000 |
| Delivery Time | 15says | Packaging Details | wooden case |
| Brand Name | ZS | Model Number | ZS |
| Certification | API 11B | Place of Origin | China |
Unibody Bow Spring Centralizers
For horizontal wells with long laterals, tortuous boreholes, and severe well geometries (including high doglegs), a one piece, non-welded centralizer is the ideal choice. The unibody construction eliminates weak points. This means that the casing string can be rotated and reciprocated with more confidence when running to bottom in tight wellbore situations. During casing rotation operations, the centralizer is designed to remain in place, while the pipe rotates inside of it. This ability to agitate the pipe during cementing operations improves cement bond and long-term cement integrity. Unibody bow springs act as a semi-rigid centralizer, designed to be slightly under gauge minimizing drag while offering both flexibility and high restoring force. As the centralizer navigates restrictions, it is designed to compress and deform to a near-flat condition. As the borehole restriction is traversed, the centralizer reverts to its original form and shape without permanent deformation or damage.
Bow-spring centralizers, with their flexible design and high restoring force, are particularly effective in enhancing cement coverage by conforming to irregularities in the wellbore and ensuring consistent standoff. Solid body centralizers offer enhanced stability and durability, making them ideal for vertical or mildly deviated wellbores where casing rotation is limited.
In summary, centralizers reduce wear on the casing by promoting proper centralization, minimizing contact between the casing and the wellbore wall, enhancing cement coverage, distributing weight and pressure evenly, facilitating fluid movement, and improving overall wellbore stability. By optimizing casing support and positioning, centralizers play a critical role in extending the operational life of the casing and ensuring the integrity of oil and gas wells.
Here's how centralizers contribute to minimizing casing wear:
Rigid Roller centralizer used in deep water Horizon Well packing: wooden case
Puyang Zhongshi Group Company Ltd was founded in 1996,which is the restructured enterprise of Central Plains oilfield branch company of SINOPEC . The company registered capital is 6083 million yuan,with annual output value 200 million yuan, 580 employees, including more than 160 technical and administrative staff. Oil machinery is our main products, the leading products include pumping unit,subsurface sucker rod pump, wellhead (Christmas Tree), pressure vessels,drilling solid control series products and cementing accessories, We had attained ISO 9001 in 1998 and API Certificates in 2002 .
We have 9 factories, more than 500 employees, and many kinds of production equipments.
We have certificates of API 5CT,6A,10D,11AX,11E, ISO 14001 and 9001.
With 10 years exporting experience,we have exported to more than 30 countries such as America,Canada,Russia,Venezuela,Columbia,Thailand,Indonesia ,UAE,Saudi Arabia,Kazakhstan etc.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
1997
Total Annual:
5 million-10 million
Employee Number:
570~600
Ecer Certification：
Verified Supplier
Puyang Zhongshi Group Co., Ltd., restructured from SINOPEC in 1997 has 20 years experience on manufacturing petroleum machinery products . The company registered capital is 10 million U.S. dollars, with annual export 30 million U.S. Dollars. We have competitive price of o... Puyang Zhongshi Group Co., Ltd., restructured from SINOPEC in 1997 has 20 years experience on manufacturing petroleum machinery products . The company registered capital is 10 million U.S. dollars, with annual export 30 million U.S. Dollars. We have competitive price of o...
Get in touch with us
Leave a Message, we will call you back quickly!