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Junk Sub/Fishing Cup
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.
Model | OD of lower end × OD of upper end (mm) | Bottom Conn. × Top Conn. |
ID (mm) |
L of cup (mm) |
OAL (mm) |
Hole size (mm) |
Product Code |
LB79 | 79×79 | 2 3/8 REG B*P | 19 | 250 | 845 | 88.9-98.4 | L14-7900 |
LB89 | 89*78 | 2 3/8 REG B*P | 19 | 250 | 845 | 108-117.5 | L14-8900 |
LB94 | 94*79 | 2 3/8 REG B*P | 19 | 250 | 850 | 108-117.5 | L14-9400 |
LB102 | 102*93 | 2 7/8 REG B*P | 31.8 | 250 | 850 | 117.5-124 | L14-10200 |
LB114 | 115*105 | 3 1/2 REG B*P | 38.1 | 250 | 915 | 130-149 | L14-11400 |
LB118 | 118*105 | 3 1/2 REG B*P | 38.1 | 250 | 875 | 139.7-149 | L14-11800 |
LB127 | 127*108 | 3 1/2 REG B*B | 38.1 | 250 | 850 | 152.4-162 | L14-12700 |
LB127 | 127*108 | 3 1/2 REG B*P | 38.1 | 250 | 915 | 152.4-162 | L14-12710 |
LB133 | 133*121 | 3 1/2 REG B*NC38 B | 38.1 | 250 | 775 | 152.4-162 | L14-13300 |
LB133 | 133*108 | 3 1/2 REG B*P | 38.1 | 250 | 915 | 152.4-162 | L14-13310 |
LB133 | 133*121 | 3 1/2 REG B*NC38 P | 38.1 | 250 | 875 | 152.4-162 | L14-13320 |
LB133 | 133*121 | NC38 P*B | 38.1 | 250 | 875 | 152.4-162 | L14-13330 |
LB140 | 140*121 | 3 1/2 REG B*NC38 B | 38.1 | 250 | 775 | 165-190.5 | L14-14000 |
LB140 | 140*108 | 3 1/2 REG B*P | 38.1 | 250 | 850 | 165-190.5 | L14-14010 |
LB140 | 140*121 | NC38 B*P | 50.8 | 250 | 915 | 165-190.5 | L14-14020 |
LB146 | 146*121 | 3 1/2 REG B*NC38 B | 38.1 | 250 | 915 | 168-190.5 | L14-14600 |
LB146 | 146*108 | 3 1/2 REG B*P | 38.1 | 250 | 875 | 168-190.5 | L14-14610 |
LB165 | 165*152 | 4 1/2 REG B*NC46 B | 57.2 | 250 | 915 | 190.5-216 | L14-16500 |
LB165 | 165*140 | 4 1/2 REG B*P | 57.2 | 250 | 915 | 190.5-216 | L14-16510 |
LB168 | 168*146 | 4 1/2 REG B*B | 57.2 | 250 | 915 | 190.5-216 | L14-16800 |
LB168 | 168*152 | 4 1/2 REG B*NC46 B | 57.2 | 250 | 915 | 190.5-216 | L14-16810 |
LB168 | 168*140 | 4 1/2 REG B*P | 57.2 | 250 | 915 | 190.5-216 | L14-16820 |
LB178 | 178*159 | 4 1/2 REG B*NC50 B | 57.2 | 250 | 915 | 219-244.5 | L14-17800 |
LB178 | 178*165 | 4 1/2 REG B*NC50 B | 57.2 | 250 | 915 | 219-244.5 | L14-17810 |
LB178 | 178*159 | 4 1/2 REG B*NC46 B | 57.2 | 250 | 915 | 219-244.5 | L14-17820 |
LB178 | 178*146 | 4 1/2 REG B*P | 57.2 | 250 | 915 | 219-244.5 | L14-17830 |
LB178 | 178*165 | NC50 P*B | 57.2 | 250 | 940 | 219-244.5 | L14-17840 |
LB194 | 194*165 | 4 1/2 REG B*NC50 P | 71.4 | 250 | 950 | 229-273 | L14-19400 |
LB219 | 219*178 | 6 5/8 REG B*NC50 B | 76.2 | 250 | 915 | 244-289 | L14-21900 |
LB219 | 219*197 | 6 5/8 REG B*P | 76.2 | 250 | 915 | 244-289 | L14-21910 |
LB219 | 219*203 | 6 5/8 REG B*P | 76.2 | 250 | 915 | 244-289 | L14-21920 |
LB241 | 241*203 | 6 5/8 REG B*P | 76.2 | 250 | 950 | 292-330 | L14-24100 |
LB245 | 245*203 | 6 5/8 REG B*B | 76.2 | 250 | 915 | 292-330 | L14-24500 |
LB245 | 245*203 | 6 5/8 REG B*P | 76.2 | 250 | 950 | 292-330 | L14-24510 |
LB245 | 245*203 | 6 5/8 REG P*B | 76.2 | 250 | 940 | 292-330 | L14-24520 |
LB273 | 273*203 | 6 5/8 REG B*P | 76.2 | 250 | 945 | 330-375 | L14-27300 |
LB327 | 327*241 | 7 5/8 REG B*B | 76.2 | 250 | 950 | 375-444.5 | L14-32700 |
LB327 | 327*241 | 7 5/8 REG B*P | 76.2 | 250 | 965 | 375-444.5 | L14-32710 |
LB327 | 327*241 | 7 5/8 REG P*B | 76.2 | 250 | 1040 | 375-444.5 | L14-32720 |
Established in 1973 as a state-owned Mudanjiang Petroleum Machinery Factory. After 50 years a new private company(Tianhe) was registered and established in 2006. At present, Tianhe Group has 5 sales companies, including Chengdu, Beijing, Shanghai, Yanan, Mudanjiang branches. 2 large factories, in cluding Mudanjiang and Shanghai factory, controlling the important sales territories in China. The company is also actively expanding its business overseas. Currently, more than 50 countries and regions around the world, as well as over 200 well-known oil companies and service company customers, are using products under the Tianhe brand. Tianhe has become one of the most popular Asian oil brands.
1.The company has over 50 years of professional production experience and is capable of independently manufacturing a complete range of downhole tools, including: drill pipes, drill collars, stabilizers, jars, fishing tools, etc.
2. We have a strict quality control system, conducting strict quality checks from raw materials to finished products.
3.The company has obtained ISO9001 quality system certification and holds API certificates such as 5CT, 5DP, 7-1, Q1, etc.
4.The minimum order quantity is 1, and the delivery cycle can be strictly controlled.
5.Our export products have been recognized by customers in more than 50 countries and regions.
1.Q:Are you a factory or trading company?
We are a factory and the Top 3 of oildrilling equipment manufacturer.
2.Q:Where is your factory located?
We locate in Heilongjiang Province, China.
3. Q:What do your factory do regarding quality control?
From material to products, we inspect each process to keep good quality.
And SGS inspection can be accepted.
4.Q:How about MOQ ?
We have stock of common sizes at hand, so even few ton is accepted.
5.Q:How about payment ?
Both T/T and L/C can be accepted.
6.Q: How long does your warranty?
We can assured the quality within 90 days after receiving the cargoes.