Unibody Bow Spring Casing Centralizers Flexible-spring Centralizers for 13 3/8 Casing STD
Brand Name:ZS
Certification:API 11B
Model Number:ZS
Minimum Order Quantity:1
Delivery Time:15says
Payment Terms:T/T
Contact Now
Add to Cart
Verified Supplier
Address:
Room2212, B Building, Tiandi Times Square, Weiyang District, Xi'an City, Shaanxi P.R., China
Supplier`s last login times:
within 28 hours
Product Details
Company Profile
Product Details
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.
Technology
Here's how centralizers contribute to minimizing casing wear:
- Preventing Eccentricity: Eccentricity, or the off-center positioning of the casing within the wellbore, can lead to uneven wear on the casing as it rubs against the formation. Centralizers help maintain the casing in the center of the wellbore, minimizing the risk of eccentricity and ensuring uniform wear distribution.
- Minimizing Contact: Centralizers create a consistent gap between the casing and the wellbore wall, reducing the likelihood of direct contact between the two surfaces. By minimizing contact, centralizers help mitigate abrasive wear caused by friction between the casing and the formation.
- Enhancing Cement Coverage: Proper centralization of the casing during cementing operations is essential for achieving uniform cement coverage around the casing circumference. A robust cement sheath provides additional protection to the casing, reducing the risk of mechanical wear and corrosion from exposure to formation fluids.
- Supporting Weight and Pressure Distribution: Centralizers distribute the weight of the casing string evenly across its length, preventing localized stress concentrations that can lead to casing deformation or failure. By supporting the weight of the casing, centralizers help minimize the risk of buckling and fatigue-related wear.
- Facilitating Fluid Movement: Centralizers facilitate the movement of drilling fluids and cement slurry around the casing during operations. Proper fluid flow helps flush away debris and drilling cuttings, reducing the abrasive effects of particle erosion on the casing surface.
- Improving Wellbore Stability: Wellbore instability can exacerbate casing wear by creating irregularities in the wellbore wall that increase friction and abrasion. Centralizers contribute to maintaining wellbore stability by preventing casing buckling, sticking, and other forms of mechanical failure that can lead to excessive wear.
Detailed Images
Packaging & Shipping
Rigid Roller centralizer used in deep water Horizon Well packing: wooden case
Company Information
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.
Unibody Bow Spring Casing Centralizers Flexible-spring Centralizers for 13 3/8 Casing STD
Inquiry Cart
0