Anti-Wear Couplings, Sucker Rod Diameter-Change Couplings, Tungsten Alloy C

Tubing Couplings and Coupling Material Eccentric Wear

I. Tubing Couplings

Product Features:
Tubing couplings are essential accessories used to connect tubing, typically
made from high-strength metallic materials such as carbon steel or alloy steel.
These materials provide excellent corrosion resistance and fatigue performance.
The design of the couplings effectively disperses stress concentrations in the
wellb, preventing cracks or fatigue damage caused by excessive localized
stress. Common types of tubing couplings include standard couplings, semi-upset
couplings, internally upset couplings, threaded couplings, sealing couplings,
and ultra-high-pressure couplings. Each type offers solutions tailored to
different well conditions and pressure environments.

Application Fields:
Tubing couplings play a crucial role in the oil and natural gas industry,
primarily used to connect tubing to ensure the continuous flow of oil or
natural gas from the wellb to the surface. They are used to connect various
types and sizes of tubing, including straight pipes, transition pipes, elbows,
and other equipment such as floating production storage and offloading systems
and pipeline valves. Additionally, tubing couplings are widely used in
plumbing, petrochemical, heating systems, and construction engineering.

Product Advantages:
1. High Strength and Durability: Manufactured from high-quality materials,
these couplings can withstand high pressure, high temperature, and corrosive
conditions.
2. Sealing Performance: Special thread designs and sealing structures ensure
the tightness of the connection.
3. Multiple Type Options: A variety of types and specifications are available
to meet different application scenarios.
4. Customized Services: Customized solutions can be provided based on specific
customer needs.

II. Coupling Material Eccentric Wear

Product Features:
Eccentric wear of coupling material refers to the wear phenomenon caused by
friction between the sucker rod and the tubing coupling. This wear can reduce
the strength of the coupling and may even cause fractures, affecting the normal
operation of the oil well. To address this issue, various anti-wear
technologies and products have been developed, such as the KZX Sucker Rod Anti-
Wear Centralizer, JY Anti-Wear Device, and Wear-Reducing Tubing Couplings.
These products enhance the wear resistance of the couplings through special
material treatments (such as laser surface hardening and ion implantation N+
treatment) or structural designs (such as wear-resistant and corrosion-
resistant non-metallic composite material coatings).

Application Fields:
Solutions for eccentric wear are mainly applied in the oil and natural gas
extraction industry, especially for wells that require long-term operation and
are at high risk of friction. These anti-wear products effectively reduce the
wear between the sucker rod and the tubing coupling, extending the service life
of the equipment and reducing maintenance costs.

Product Advantages:
1. Enhanced Wear Resistance: Special material treatments and structural designs
significantly improve the wear resistance of the couplings.
2. Reduced Maintenance Costs: Effectively reduces eccentric wear, extends the
service life of the equipment, and reduces maintenance and replacement costs
caused by wear.
3. Increased Production Efficiency: Reduces downtime caused by equipment
failure, ensuring the efficient operation of oil wells.
4. Strong Environmental Adaptability: Maintains good performance in complex
downhole environments.

In the oil and natural gas industry, tubing couplings and solutions for
eccentric wear of coupling material are key components to ensure the safe and
efficient operation of oil wells. By selecting the appropriate products and
solutions, the reliability and service life of the equipment can be effectively
improved, providing strong support for oil extraction.

Additional Information:
- 4-1/2" LT Thread Oil Casing: Oil casing is primarily used for drilling oil
and gas wells and for the transportation of oil and gas. It includes drill
pipes, oil casing, and sucker rods.
- Coupling Manufacturers: Offering extended-length tubing couplings and special
clearance couplings.
- Casing Couplings: Available thread types include ST (Short Round Thread), LT
(Long Round Thread), and BT (Buttress Thread).
- Tubing Couplings: Sizes include 2-3/8", 2-7/8", 3-1/2", 4-1/2" with thread
types NUE and EUE.
- Casing Couplings: Sizes include 4-1/2", 5-1/2", 6-5/8", 7", 9-5/8", 10-3/4",
13-3/8", 20" with thread types ST, LT, BT.

Quality Assurance:
1. Coupling Material Certification: Provide a quality statement for coupling
blanks in accordance with API Spec 5CT (9th Edition) requirements, along with
relevant documentation to ensure that the coupling blanks are produced in
compliance with API standards.
2. Thread Inspection: For casing couplings, the 11th Edition couplings with BT
threads are available as standard stock. Thread processing parameters such as
close tolerance, tooth height, pitch, and taper are inspected in accordance
with API Spec 5CT (9th Edition) and API Spec 5B (15th Edition). All dimensional
and thread parameter inspections should be well documented. The thread surface
should be smooth and free from obvious tearing, tool marks, grinding marks,
shoulders, or any other defects that disrupt the continuity of the thread. The
internal and external chamfers and starting threads should be free from burrs
and sharp edges.
3. Critical Thickness of Couplings: The critical thickness of the couplings
should be specified.
4. Chamfered Casing Couplings: The 11th Edition couplings with BT threads are
available as standard stock. Conversion couplings and thread change couplings
for N80/L80 tubing couplings with 2-7/8" EUE are also available.
5. Chamfered Edges: The internal and external chamfered edges of the coupling
should have a radius of ≥0.5 mm. Chamfering should be applied to the inner and
outer edges of the coupling's load-bearing surface.
6. Thread Inspection: Ultrasonic testing of threads is conducted to ensure
quality.

We sincerely look forward to your call! We are committed to serving you
wholeheartedly!
Contact:Bone
Email:Bone@ , dlpoctg.com
Whatsapp/WeChat /Tel: +86-18222899636

Minimum Order: 1 metric tons

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