Techcore Oil Tools Co.,Ltd,
Professional Provider & Manufacture of DST tools, Coiled Tubing Tools & Wireline Tools
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Well Bore Clean Tools Junk Sub For Oil Well Drilling Fishing Tools
Junk Sub is the component of well bore clean tools. The junk sub is normally run just above the drill bit which has a cup for catching object too heavy to be completely circulated out of the hole. This is particularly advantageous in junk milling operations.By running a Junk Sub above a Scraper, operators can get quicker, cleaner scraping jobs. Junk Sub is constructed from high quality steel, and features a rib guide which prevents the cup from becoming crushed and helps guide the tool through tight places upon withdrawal from the hole.
Technical parameter of Junk sub
| Model Size | Standard top connection | Diameter of Bore /inch | Length of cup /inch | Total Length / inch |
| 4” to 5 5/8” | 2 3/8 REG | 3 /4 | 10 | 29 |
| 20 | 4 | |||
| 30 | 53 1/2 | |||
| 4 5/8” to 4 7/8” | 2 7/8 REG | 1 1/4 | 10 | 29 1/2 |
| 20 | 44 | |||
| 30 | 54 | |||
| 5 1/8” to 5 7/8” | 3 1/2 REG | 1 1/2 | 10 | 30 1/2 |
| 20 | 45 | |||
| 30 | 55 | |||
| 6” to 6 3/8” | 3 1/2 REG | 1 1/2 | 10 | 30 1/2 |
| 20 | 45 | |||
| 30 | 55 | |||
| 6 1/2” to 7 1/2” | 3 1/2 REG | 1 1/2 | 10 | 30 1/2 |
| 20 | 45 | |||
| 30 | 55 | |||
| 7 1/2” to 8 1/2” | 4 1/4 REG | 2 1/4 | 10 | 31 1/2 |
| 20 | 46 | |||
| 30 | 56 | |||
| 8 5/8” to 9 5/8” | 4 1/4 REG | 2 1/4 | 10 | 31 1/2 |
| 20 | 46 | |||
| 30 | 56 | |||
| 9 5/8” to 11 5/8” | 6 5/8 REG | 3 1/2 | 10 | 33 |
| 20 | 48 | |||
| 30 | 58 | |||
| 11 1/2” to 13” | 6 5/8 REG | 3 1/2 | 10 | 33 |
| 20 | 48 | |||
| 30 | 58 | |||
| 14 3/4” to 17 1/2” | 7 5/8 REG | 4 | 10 | 36 |
| 20 | 50 | |||
| 30 | 60 |
Advantage of Techcore Oil Tools
Techcore Oil Tools has committed to the design of downhole tools for more than ten years.With the professional Research and Development (R&D) department and skilled engineers, Techcore improves the advanced technology in design and manufacture of the downhole oil tools .
In order to meet different requirement of downhole operation, in recent years, we joint with other factory who have accumulated abundant experiences in design and development the well completion tools, to manufacture and supply the oil well downhole tools, so that Techcore can offer one-stop purchasing service of downhole operation tools in well testing, well perforation, well completion.
Product Scope
Drill Stem Testing Tools: RTTS packer, RTTS circulating valve, RTTS safety joint, Downhole tester valve, Select tester valve, LPR- N Valve, Tubing String Tester Valve, Omni valve, Multi-cycle circulating valve, RD Circulating valve, RD safety Circulating Valve, Hydraulic Circulating Valve, Hydraulic jar, vertical shock absorber, radial shock absorber, RD safety circulating valve, high pressure retrievable packer with bypass, CHAMP packer, IPO valve, Sleeve type drain valve, rupture disk sampler, super safety valve with control panel, BOP safety valve for downhole operation and so on.
Well Bore Clean Tools: Casing Scraper, Junk Sub, Junk Basket etc.
Coiled Tubing Tools: Motorhead assy, Check valve, Washing over tool, Connector, Hydraulic jar.
Wireline tools: Wireline BOP, Slickline connector, swivel joint, Knuckle joint, Rope socket etc.