Versatile Junk Sub for Management Solutions

• Customization: Available
• After-sales Service: Lifetime Support
• Warranty: Provide
• Model NO.: Junk sub
• Certification: CE, RoHS, ISO 9001:2000, ISO 9001:2008
• Operation Pressure: Atmospheric Pressure
• Applicable Medium: Crude Oil
• Structure: Horizontal
• Material: Alloy
• Transport Package: Wooden
• Specification: 4145H
• Trademark: KAIDI
• Origin: China
• HS Code: 8481300000
• Production Capacity: 50000pieces/Year

Product Description

Product Description

Junk Sub (Fishing Cup) is normally used to catch and remove junks that are too heavy to be circulated preventing them from settling at the bottom of the well-bore. Typical junks are shivers and fallen objects such as carbide tooth, drill bit and bearings which are too heavy to be removed from the well- hole through conventional fluid circulation. Junk Sub's main function is to keep well bottom clean to increase bit service life, reduce and prevent drill bit from unexpected damage.

Structure
As the outer diameter of the external bowl is bigger, the space between the external bowl and the well hole is reduced guiding most of the fluid through the cup. The mandrel diameter at the cup mouth is bigger with larger annular space. Thus, the fluid forms a swirl at the cup mouth as the fluid flows down through the cup with a sudden reduction in capacity at the bottom. Through this working principle, some heavy objects will drop in the cup and be fished out, ensuring that the well-bore bottom is cleaned.

Specifications - Junk Sub

Model	Bottom Conn. × Top Conn	OD of cup(mm)	OD of upper end	ID (mm)	L of cup(mm)	OAL(mm)	Hole size(mm)	Product Code
LB79	2 3/8REG B*2 3/8REG P	79	79	19	250	845	88.9~98.4	L14-07900
LB89	2 3/8REG B*2 3/8REG P	89	78	19	250	845	108~117.5	L14-08900
LB94	2 3/8REG B*2 3/8REG P	94	79	19	250	850	108~117.5	L14-09400
LB102	2 7/8REG B*2 7/8REG P	102	93.5	31.8	250	850	117.5~124	L14-10200
LB114	3 1/2REG B*3 1/2REG P	115	105.5	38.1	250	915	130~149	L14-11400
LB127	3 1/2REG B*3 1/2REG P	127	108	38.1	250	850	152.4~162	L14-12720
LB133	3 1/2REG B*3 1/2REG P	133	108	38.1	250	875	152.4~162	L14-13340
LB140	3 1/2REG B*3 1/2REG P	140	108	38.1	250	875	165~190.5	L14-14030
LB146	3 1/2REG B*3 1/2REG P	146	108	38.1	250	875	168~190.5	L14-14610
LB165	4 1/2REG B*4 1/2REG P	165	140	57.2	250	915	190.5~216	L14-16510
LB168	4 1/2REG B*4 1/2REG P	168	140	57.2	250	915	190.5~216	L14-16820
LB178	4 1/2REG B*4 1/2REG P	178	146	57.2	250	915	219~244.5	L14-17830
LB194	4 1/2REG B*4 1/2REG P	194	146	57.2	250	950	229~273	L14-19410
LB200	4 1/2REG B*4 1/2REG P	200	146	57.2	250	950	229~273	L14-20000
LB219	6 5/8REG B*6 5/8REG P	219	197	76.2	250	950	244~289	L14-21930
LB241	6 5/8REG B*6 5/8REG P	241	197	76.2	250	950	292~330	L14-24110
LB245	6 5/8REG B*6 5/8REG P	245	203	76.2	250	950	292~330	L14-24510
LB245	6 5/8REG B*6 5/8REG P	245	197	88.9	250	940	292~330	L14-24530
LB273	6 5/8REG B*6 5/8REG P	273	203	76.2	250	950	330~375	L14-27300
LB286	6 5/8REG B*6 5/8REG P	286	203	76.2	250	1000	330~375	L14-28600
LB327	7 5/8REG B*7 5/8REG P	327	241.3	76.2	250	1050	375~444.5	L14-32730
LB327	7 5/8REG B*7 5/8REG P	327	225.4	102	250	1000	375~444.5	L14-32740
LB340	7 5/8REG B*7 5/8REG P	340	225.4	76.2	250	1080	381~444.5	L14-34000
LB381	7 5/8REG B*7 5/8REG P	381	241.3	76.2	250	1065	432~508	L14-38100
LB473	7 5/8REG B*7 5/8REG P	473	241.3	76.2	250	1120	508~559	L14-16820

 

Company Profile

 

Mudanjiang Kaidi Petroleum Machinery Co., Ltd is a professional manufacturer in the field of petroleum machinery, boasting rich experience and excellent technical strength in the production of downhole petroleum drilling and production tools.

Our main products are downhole petroleum drilling and production tools, covering a variety of types and specifications, which can meet the various needs of different customers in the process of petroleum extraction. With advanced production equipment and exquisite production technology, we have strong production and machining capabilities, enabling us to efficiently and accurately complete the processing and manufacturing of various complex parts.

Notably, we specialize in custom - made services according to customers' drawings. No matter how unique and complex the customers' requirements are, our professional technical team, with rich experience and innovative ability, can customize products that meet their specific needs according to the drawings and requirements provided by customers, providing personalized solutions for them.

In terms of material processing, we have deep technical accumulation and professional advantages, especially in the processing of special materials such as nickel - based alloys and titanium alloys. These special materials have excellent properties such as high strength, corrosion resistance and high temperature resistance, which are suitable for the harsh petroleum extraction environment. We are proficient in the processing technology of these materials, which can give full play to their performance advantages and ensure the quality and reliability of products.

We always adhere to the business philosophy of "quality first, customer first", and have won the trust and support of our customers with high - quality products and services. In the future, we will continue to focus on technological innovation and product optimization in the field of petroleum machinery, continuously enhance our core competitiveness, and make greater contributions to the development of the global petroleum industry.


Contact for Technical Support:
LAURA Manager

FAQ for Oilfield Machinery Products

Q1:Do your products comply with API/ISO international standards?
Answer: Yes, our products fully comply with API Spec 7-1, API 6A, and are certified with ISO 9001.
Q2:How do we ensure quality?
Answer:Production samples are always made before mass production.
A final inspection is always conducted before shipment.
Q3:: Are you the manufacturer? What petroleum machinery products do you mainly offer?
Answer: Yes, we are a professional manufacturer integrating R&D, production and export with our own production base. Our main products include:
Fishing Tools (e.g., overshots, fishing spears, milling shoes
Drilling Tools (e.g., drill pipes, stabilizers, reamers)
Valves (e.g., gate valves, check valves, safety valves)
Other downhole equipment, etc.
For more details, please contact our sales team We also provide customized OEM solutions.
Q4:What is the warranty period? How to claim it?
Answer: 12-month warranty. Provide the serial number and fault description for a response within 48 hours.
Q5:Do you provide technical training or on-site support?
Answer: Free remote training is available. On-site support costs are negotiable.
Q6: What is the lead time for delivery?
Answer: 30 days for standard products; 60-90 days for customized orders (subject to complexity).
Q7: What shipping methods do you offer? How to track orders?
Answer: Sea express shipping available. Tracking number and link provided after shipment.
Q8: How do you package the products to prevent rust during sea shipping?**  
Answer:Packaging includes anti-rust oil, vacuum sealing, wooden crates, and desiccants.*  
Q9:Do you accept customized orders?
Answer: OEM is accepted. Submit detailed drawings or specifications for a quote.
Q10:How to get your latest product catalog?For any further detailed inquiries, please feel free to contact us .