API Junk Sub Downhole Tools

• After-sales Service: Provide
• Warranty: 12 Month
• Manufacturing Process: CNC Milling
• Surface Treatment: Oxidation
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• Model NO.: ASSK
• Thread: API
• Type: Junk Sub
• Machine Type: Fishing Tool
• Drill Stringmaterial: Type: High Manganese Steel
• Use: Well Drilling
• Transport Package: Wooden Case
• Specification: According to the custom
• Trademark: Tolian
• Origin: China
• HS Code: 8431431000
• Production Capacity: 1000piece/Year

Product Description

Product description
 

Junk Sub

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 Subs 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 extemal bowl is bigger, the space between the extemal bow 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.

 

Model	Bottom Conn.×Top Conn	OD of cup(mm)	OD of upper end	ID	L of cup(mm)	OAL	Hole size(mm)
				(mm)		(mm)
LB79	2 3/8REG B*2 3/8REG P	79	79	19	250	845	88.9~98.4
LB89	2 3/8REG B*2 3/8REG P	89	78	19	250	845	108~117.5
LB94	2 3/8REG B*2 3/8REG P	94	79	19	250	850	108~117.5
LB102	2 7/8REG B*2 7/8REG P	102	93.5	31.8	250	850	117.5~124
LB114	3 1/2REG B*3 1/2REG P	115	105.5	38.1	250	915	130~149
LB127	3 1/2REG B*3 1/2REG P	127	108	38.1	250	850	152.4~162
LB133	3 1/2REG B*3 1/2REG P	133	108	38.1	250	875	152.4~162
LB140	3 1/2REG B*3 1/2REG P	140	108	38.1	250	875	165~190.5
LB146	3 1/2REG B*3 1/2REG P	146	108	38.1	250	875	168~190.5
LB165	4 1/2REG B*4 1/2REG P	165	140	57.2	250	915	190.5~216
LB168	4 1/2REG B*4 1/2REG P	168	140	57.2	250	915	190.5~216
LB178	4 1/2REG B*4 1/2REG P	178	146	57.2	250	915	219~244.5
LB194	4 1/2REG B*4 1/2REG P	194	146	57.2	250	950	229~273
LB200	4 1/2REG B*4 1/2REG P	200	146	57.2	250	950	229~273
LB219	6 5/8REG B*6 5/8REG P	219	197	76.2	250	950	244~289

Marina  
  
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Liaoning Tolian Technology development Co,. Ltd
Adress:No.45 Shuangde  Street,Tiexi Distrct,Anshan City,Liaoning   Province,China