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Water Well Drill Bit

Star Tornado covers sizes from 4 1/2” to 17 1/2”, and has more than 100 varieties of TCl and steel tooth roller cone bits, which are suitable for extremely soft to extremely hard formations, and are also suitable for conventional drilling and other different drilling techniques.

FOR BROCHUREGET A QUOTE
Cost-Effective Type: W Series Water Well Drill Bit

Positioning

Tailored for shallow, soft to medium‑hard formations and budget‑sensitive projects, pursuing ultimate cost‑effectiveness.

Product Features:

  1. The cones and lugs of this series are made from conventional alloy structural steel, meeting the operational requirements for soft to medium‑hard formations.
  2. This series incorporates reinforced hardfacing on the shirttail, alloy tooth protection on the cutter lug, and heel row teeth on the cone, enhancing the bit's ROP and gauge holding capability.

Product Advantages:

  1. Wide Applicability:
    Covers most common conditions for shallow water wells.
  2. High Cost‑Effectiveness:
    Achieves the job with a low cost per meter drilled within the target formations.

Application Scenarios:

  1. Agricultural irrigation wells, rural drinking water wells.
  2. Shallow holes for geological exploration, dewatering wells for construction.
  3. Fast drilling in homogeneous medium‑hard formations.

➤ Selection Table

Bit Size API Thread Bit model
in mm in
5 1/8 130.2 2 7/8 WHA517
5 1/2 139.7 3 1/2 WHA117、WHA537、WHA637
5 5/8 142.9 3 1/2 WHA417、WHA517、WHA537、WHA617
5 7/8 149.2 3 1/2 WHA117、WHV517、WHV537
6 152.4 3 1/2 WHV117、WHV417、WHV517、WHV537、WHV617
6 1/8 155.6 3 1/2 WHA117、WHV117、WHV417、WHV517、WHV537、WHV617
6 1/4 158.8 3 1/2 WHA117
6 1/2 165.1 3 1/2 WHA117、WHA417、WHA437、WHV517、WHV537、WHV617、WHV637
6 3/4 171.5 3 1/2 WHA117、WHA537、WHV437、WHV517、WHV537、WHV617、WHV637
7 1/2 190.5 4 1/2 WHV117、WHV217、WHV417、WHV437、WHV517、WHV537、WHV617
7 7/8 200 4 1/2 WHV117、WHV217、WHV417、WHV437、WHV517、WHV527、WHV537、WHV617、WHV637
8 1/2 215.9 4 1/2 WHA517、WHV117、WHV137、WHV217、WHV417、WHV437、WHV537、WHV617、WHV637
8 3/4 222.3 4 1/2 WHA117、WHV517
9 7/8 250.8 6 5/8 WHA117、WHA517、WHA527、WHA537、WHA617、WHV117、WHV217、WHV417、WHV437、WHV637
10 5/8 269.9 6 5/8 WHV117、WHV217、WHV417、WHV437、WHV517、WHV527、WHV537、WHV617、WHV637
11 279.4 6 5/8 WHV417、WHV437、WHV517、WHV537、WHV617、WHV637、WHV837
11 5/8 295.3 6 5/8 WHA117、WHA437、WHA517、WHA527、WHA537、WHA617
11 7/8 301.6 6 5/8 WHA437、WHA517、WHA527、WHA537、WHA617
12 1/4 311.2 6 5/8 WHV117、WHV217、WHV417、WHV437、WHA517、WHA527、WHA537、WHA617、WHA637、WHA737
13 3/8 339.7 6 5/8 WHV437、WHV517、WHV647
13 5/8 346.1 6 5/8 WHA437、WHA517、WHA537、WHA617
13 3/4 349.3 6 5/8 WHA117、WHA417、WHA437、WHV517、WHV537、WHV617
14 3/4 374.7 7 5/8 WGA115、WGA415、WGA515、WGA535
15 381 7 5/8 WGA435、WGA535、WGA635
16 406.4 7 5/8 WGA515、WGA535
17 1/2 444.5 7 5/8 WGA115、WGA415、WGA535、WGA615、WGA625

Note: Tricone bits can be designed and produced according to the customer's requirements should no bit model found in the above selection table

Pioneering Type: S Series Water Well Drill Bit

Positioning

Engineered for the most extreme and severe conditions, pursuing ultimate penetration capability and ultra‑long service life. It represents the culmination of technology for tackling high drilling depths and difficulties.

Product Features:

  1. This series utilizes high‑strength alloy structural steel, further enhanced by customized heat treatment plans to improve the cones' and lugs' adaptability to extreme conditions.
  2. The bearing surfaces in this series are specially strengthened to withstand high‑impact and high‑load conditions.
  3. This series features comprehensive protection on the back of the lugs, improving lug stabilization and further reinforcing gauge holding capability.

Product Advantages:

  1. Unparalleled Rock‑Breaking Ability:
    Maintains efficient crushing rates even when facing the hardest rock.
  2. Ultra‑Long Service Life:
    Top‑tier materials and manufacturing processes ensure maximum single‑run working time, making it particularly suitable for ultra‑deep well operations.
  3. Extreme Reliability:
    Delivers stable performance under high‑temperature, high‑pressure conditions, providing you with the most dependable assurance.

Application Scenarios:

  1. Ultra‑deep water wells.
  2. Geothermal wells, hot dry rock drilling.
  3. Extremely hard, highly abrasive, or severely fractured complex formations.

➤ Selection Table

Bit Size API Thread Bit model
in mm in
5 1/8 130.2 2 7/8 SHA517、SHA537、SHA617
5 1/4 133.4 3 1/2 SHA517、SHA537、SHA617、SHA637
5 1/2 139.7 3 1/2 SHA117、SHA417、SHA437、SHA517、SHA537、SHA617、SHA637
5 5/8 142.9 3 1/2 SHA517、SHA537、SHA617
5 7/8 149.2 3 1/2 SHA117、SHA517、SHA537、SHA617、SHJ537
6 152.4 3 1/2 SHA517、SHA537、SHA617、SHA637、SHV117、SHV417、SHV437、SHV517、SHV537、SHV617、SHV637、SHJ537、SHJ617、SHJ637
6 1/8 155.6 3 1/2 SHA517、SHV117、SHV417、SHV437、SHV517、SHV537、SHV617、SHV637
6 1/4 158.8 3 1/2 SHA517、SHA537、SHA617、SHV117
6 1/2 165.1 3 1/2 SHA437、SHA537、SHA617、SHA637、SHV117、SHV517、SHV537、SHV617、SHV637、SHJ537、SHJ617、SHJ637
6 3/4 171.5 3 1/2 SHA517、SHA537、SHA617、SHA637、SHV117、SHV417、SHV437、SHV517、SHV537、SHV617、SHV637、SHJ537
7 1/2 190.5 4 1/2 SHV117、SHV437、SHV517、SHV537、SHV617
7 5/8 193.7 4 1/2 SHV537、SHV617
7 7/8 200 4 1/2 SHV117、SHV417、SHV437、SHV517、SHV527、SHV537、SHV617、SHV637、SHJ527、SHJ637
8 1/2 215.9 4 1/2 SHA437、SHA517、SHV117、SHV437、SHV517、SHV527、SHV537、SHV617、SHV637、SHJ517、SHJ537、SHJ617、SHJ637
8 3/4 222.3 4 1/2 SHA447、SHJ537、SHJ637、SHV117、SHV437、SHV517、SHV527、SHV537、SHV617、SHV637
9 1/2 241.3 6 5/8 SHA127、SHV117、SHV127、SHV437、SHV517、SHV537、SHV617、SHV637
9 5/8 244.5 6 5/8 SHV117、SHV437、SHV537、SHV547、SHV637
9 7/8 250.8 6 5/8 SHV117、SHV417、SHV437、SHV447、SHV517、SHV527、SHV537、SHV617、SHV637、SHJ617
10 5/8 269.9 6 5/8 SHV117、SHV417、SHV437、SHV517、SHV527、SHV537、SHV617、SHJ537、SHJ637
11 5/8 295.3 6 5/8 SHA117、SHA127、SHA437、SHA517、SHA527、SHA537、SHA617、SHA637、SHJ637
11 7/8 301.6 6 5/8 SHA117、SHA527、SHA617、SHA637
12 1/4 311.2 6 5/8 SHA117、SHA127、SHA217、SHA417、SHA437、SHA517、SHA537、SHA547、SHA617、SHA637、SHJ537、SHJ637、SHV517、SHV537、SHV617
13 3/8 339.7 6 5/8 SGA545
13 5/8 346.1 6 5/8 SHA517、SHA537
13 3/4 349.3 6 5/8 SHA517、SHA617
14 3/4 374.7 7 5/8 SGA115、SGA415、SGA435、SGA515、SGA535、SGA615、SGA735、SGA835、SHA417
15 381 7 5/8 SGA415、SGA435、SGA535、SGA635
15 1/2 393.7 7 5/8 SGA425、SGA515、SGA535、SGA635
15 3/4 400.05 7 5/8 SGA415、SGA435、SGA515、SGA535
16 406.4 7 5/8 SGA515、SGA535
17 1/2 444.5 7 5/8 SGA115、SGA415、SGA425、SGA515、SGA535、SGA615、SGA625、SGA735

Note: Tricone bits can be designed and produced according to the customer's requirements should no bit model found in the above selection table

Recommendations for Tricone Bit Parameters
Bit Type IADC Recommend parameter Apply formation
Pulldown (kN/mm) Rotation speed (r/min)
Rubber sealed 117 0.35~0.90 150~80 Extremely soft formations with low compressive strength and high drillability, such as soft shale, clay, salt rock, etc.
127 0.35~1.00 150~70 Low compressive strength, high drillability soft formation, such as shale, clay, salt rock, soft limestone, etc.
417 0.35~0.90 140~70 Extremely soft formations with low compressive strength and high drillability, such as shale, clay, sandstone, conglomerate, etc.
437 0.35~0.95 140~60 Extremely soft formations with low compressive strength and high drillability, such as shale, clay, sandstone, conglomerate, etc.
447 0.35~1.00 140~60 Soft formations with low compressive strength and high drillability, such as shale, clay, salt rock, sandstone, soft limestone, gypsum, etc.
517 0.35~1.05 120~50 Soft formations with low compressive strength and high drillability, such as shale, clay, sandstone, soft limestone, etc.
527 0.35~1.05 120~50 Soft formations of compressive strength, such as shale, clay, sandstone, soft limestone, salt rock, anhydrite, etc.
537 0.35~1.05 110~40 Compressive strength, medium soft, with hard abrasive interlayer, such as hard shale, anhydrite, soft limestone, sandstone, etc
617 0.35~1.05 80~40 High compressive strength, medium to hard, with thick hard intercalations, such as hard shale, limestone, dolomite, sandstone, etc.
637 0.70~1.20 70~40 High compressive strength, high abrasive and medium hard formations such as limestone, dolomite, sandstone, flint, etc.
647

Note: The maximum pull down and rotation speed in the table is not recommended to be used at the same time.

Selection of Nozzles

Nozzle of the Tornado oil bit is made of cemented carbide. The name of the nozzle includes three parts: nozzle type, size code and outlet diameter.

➤ Example S3‑12 is as follows:

Nozzle type. S stands for standard type

The nozzle size code is 3

The nozzle outlet diameter is 12mm

➤ Nozzle selection table

Nozzle size code Bit Size Nozzle diameter (mm) Nozzle assembly length (mm) Nozzle outlet diameter (mm)
(in) (mm)
1 3 1/2~5 1/2 88.9~139.7 20.3 17.48 4~14
2 5 5/8~7 3/8 142.9~187.3 23.5 19.05 5~17
3 7 1/2~8 1/4 190.5~209.6 29.74 20.62 6~22
4 8 3/8~15 5/8 212.7~396.9 32.89 26.97 6~26
5 15 3/4~26 400.1~660.4 40.84 26.97 6~26

Note: Special nozzles of medium length, micro length and diamond can be provided