Wuxi Saikefu New Material Technology Co., Ltd.: Your Leading Stop Collar Supplier

 

 

We are a high-tech enterprise committed to innovation and breakthrough in the field of new materials. We focus on the research and development, design and manufacture of high-performance new material products, aiming to provide cutting-edge solutions for the global lightweight aviation and oil fields. Our products mainly include well completion tools, oilfield tool accessories, cementing tools, titanium products, magnesium products, stop collar, etc.

 

 

Why choose us
 

Professional team
We have a research and development team composed of industry experts, senior engineers and young talents. They have profound professional knowledge, rich practical experience and keen insight.

 

Continuous innovation
Through continuous technological innovation and research and development investment, we continue to launch new material products with independent intellectual property rights and lead the development direction of the industry.

 

High quality
The products we produce have excellent water resistance, corrosion resistance and high temperature resistance, and can maintain stable performance under extreme conditions, providing reliable technical support for oil and gas drilling, production and transportation.

Design of Stop Collars

 

The design of a hinged set screw stop collar incorporates several key elements that enable its functionality and reliability. Here are the main design components:

 

Material construction
Material construction is a crucial aspect of the hinged set screw stop collar design. It determines durability and performance. They are commonly crafted from robust materials such as stainless steel or aluminum. Stainless steel offers excellent corrosion resistance and strength. Aluminum provides a lightweight alternative with good resistance to oxidation. Both materials ensure longevity and reliability in various applications. This makes them suitable for securing components in demanding environments. The choice of material directly impacts the collar's ability to withstand mechanical stresses and environmental factors. This ensures precise and consistent component positioning over time.

 
 

Hinged mechanism
The hinged mechanism is integral to the functionality of the set screw stop collar. It allows for easy installation and adjustment on shafts or rods. This design typically includes a pair of interlocking halves that are connected by a hinge. This permits the collar to open and close around the shaft. Once in place, the collar can be secured using set screws. They are positioned along the inner circumference. These screws press against the shaft to hold the collar firmly in place. The hinged design simplifies the process of fitting the collar onto the shaft without the need for specialized tools or extensive disassembly of the assembly. This is particularly useful in applications where space is limited or where components need to be frequently adjusted or repositioned.

 
 

Set screws
Set screws are vital in securing the hinged set screw stop collar to the shaft. This collar relies on these screws to achieve a secure and stable attachment. They are typically arranged in a circular pattern along the inner surface of the collar. They exert radial pressure on the shaft when tightened. This forms a frictional bond that prevents relative movement between the collar and the shaft. The number and placement of the set screws are engineered to ensure even distribution of pressure. This minimizes the risk of slippage or loosening due to vibration or dynamic loads. The selection of high-strength steel or alloy screws enhances the connection's integrity. This ensures that the collar remains fixed in position under varying operational conditions.

 
 

Adjustability and locking mechanism
Adjustability and locking mechanisms are pivotal in ensuring precise positioning and secure fixation of components within various assemblies. This design typically incorporates a series of predefined adjustment points. This allows the collar to be moved along the length of the shaft in small increments. Once the desired position is achieved, a locking mechanism is engaged. This often consists of set screws or bolts that are tightened against the shaft to firmly secure the collar in place. The locking mechanism must be robust enough to withstand dynamic loads and vibrations. This prevents unintended movement over time. This design approach offers versatility in component spacing and alignment. This makes it well-suited for applications requiring frequent adjustments and reliable, repeatable locking capabilities.

 

 

Product Specifications

 

 

Specification(in)

ID(mm)

OD(mm)

Height (mm)

Holding Force(KN)

20 “

513

527

200

40

13 3/ 8”

338

350

200

40

10 3/ 4”

272

284

120

40

9 5/ 8”

245

257

80

40

8 1/ 8”

206

218

80

40

7 5/ 8”

193

285

80

30

7”

177

189

80

30

6 5/8″

171

182

50

30

5 1/ 2”

139

151

50

30

5”

126

138

50

24

4 1/ 2”

114

126

50

24

 

Application of Stop Collar
Model D Hinged Spiral Nail Stop Collar
Model D Hinged Spiral Nail Stop Collar
Model C Hinged Set Screw Stop Collar
Model A Nylon Set Screw Stop Collar

Casing running services
Casing stop collars are widely used in casing running services and are helpful in stabilizing different casing sections while they are being set into the wellbores. This comes in handy especially when dealing with deep wells or horizontal sections where there is uncertainty of slippage or movement between the casing joints.

 

Multi-zone completions
These are situations where oil and gas wells have been constructed in such a way that multiple reservoir zones have to be accessed. Casing stop collars are used to assist in the deployment of perforation assemblages or isolation packers. This ensures that only the intended reservoir zones are produced from while maintaining desired completions.

 

Offshore environments
Casing stop collars find profound usage in offshore environments, for instance, contributing to the structural routine of platform jacket legs or assisting in securing subsea tree assemblies. This enhances the functionality and reliability of the deep offshore drilling and production systems.

 

Cementing operations
At times, there is a need to control the cement flow during the cementing operations. Casing stop collars are used to create predetermined flow pathways or to limit cement displacement into specific zones. This helps in ensuring proper cement placement and sealing of annular spaces.

 

Able bodied backups
Even with the best efforts, casing collars might sometimes be damaged or develop an imperfection. Casing stop collars come in handy as backups or emergency supporters. They are strategically placed to salvage the situation and retain the integrity of the well structure while further investigations take place.

 

Ordering Process
1

Set a strategy

Determine quantity, style and delivery time.

2

Sign contract

Provide efficient, high-quality services.

3

Production

Strict control and quality control at all levels.

4

Delivery

Delivery to customers according to contract time.

 

Corporate Clients

 
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FAQ

 

Q: What materials are your stop collars made from?

A: Our stop collars are typically made from high - strength alloy steel, which provides excellent durability and resistance to wear and tear in wellbore applications.

Q: What are the standard sizes available for stop collars?

A: We offer stop collars in a range of standard sizes, from 2 - 7/8 inches to 9 - 5/8 inches in diameter, which are commonly used in oil and gas well casing applications.

Q: How does the stop collar ensure proper gripping on the casing?

A: The stop collar has a serrated or toothed inner surface that bites into the casing when tightened. This provides a secure grip to prevent movement along the casing string.

Q: Are your stop collars suitable for high - pressure applications?

A: Yes, our stop collars are designed to withstand high - pressure environments. They are engineered and tested to hold firmly under pressures up to [X] psi, depending on the specific model.

Q: Can the stop collars be used in deviated or horizontal wells?

A: Absolutely. Our stop collars are designed to function effectively in deviated and horizontal wells. Their grip mechanism works regardless of the wellbore orientation.

Q: What is the maximum weight that a stop collar can support?

A: Our standard stop collars can support casing weights of up to [X] pounds per foot. However, we also have heavy - duty models that can handle even greater weights for specialized applications.

Q: Do you offer different types of finishes on the stop collars?

A: Yes, we offer stop collars with various finishes such as galvanized for corrosion resistance, and black oxide for a more durable surface in certain applications.

Q: How are the stop collars installed?

A: The stop collars are typically installed by threading them onto the casing string at the desired location and then tightening them using appropriate tools. Some models may also be welded in place for added security.

Q: Are your stop collars compatible with other wellbore components?

A: Yes, they are designed to be compatible with common wellbore components such as tubing, couplings, and other casing accessories.

Q: What is the tolerance in the sizing of your stop collars?

A: Our stop collars have a very tight tolerance in sizing. The diameter tolerance is typically within ±0.01 inches to ensure a proper fit on the casing.

We're well-known as one of the leading stop collar manufacturers and suppliers in China. Please rest assured to wholesale cheap stop collar from our factory. Good service and quality products are available.

Model C Hinged Set Screw Stop Collar, Model G Slip On Super Heavy Duty Set Screw Stop Collar, Model E Slip On Set Screw Stop Collar
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