Engineered tools for every stage of the well.
A curated range of drilling tools for the bottom-hole assembly — sourced from specialist manufacturers and matched to the demands of deviated, high-friction, and high-temperature wells.
Double-Acting Hydraulic Drilling Jar (HJDA)
Built for reliable defense against stuck drillstrings in highly deviated or high-friction wells, the HJDA delivers sturdy, powerful, bidirectional hydraulic action. Its latch-free design widens jar-placement options and works in tension or compression — an effective option when available force can't jar down with a conventional mechanical jar.
- Latch-free — usable in tension or compression
- Fixed piston keeps fluid and cuttings out of the tool
- Just two oil seal chambers for higher reliability
- Twin metering (Visco Jet) valves for controllable impact
- Convertible to HMDA / HMSA mechanical jars
- Ultimate configuration available for industry-leading overpull
| Type | Nominal OD (in) | Length (ft) | Thru bore (in) | Tensile yield (lb) | Max pull during delay (lb) | Total stroke (in) |
|---|---|---|---|---|---|---|
| Standard | 3⅛ | 14.3 | 1.25 | 240,000 | 50,000 | 21.0 |
| Standard | 4¼ | 16.9 | 2.00 | 300,800 | 70,000 | 25.0 |
| Ultimate | 5¼ | 21.9 | 2.25 | 534,300 | 185,000 | 25.0 |
| Standard | 6¼ | 17.9 | 2.25 | 938,900 | 160,000 | 25.0 |
| Ultimate | 7 | 22.7 | 2.75 | 1,220,000 | 340,000 | 25.0 |
| Ultimate | 8¼ | 18.2 | 2.81 | 1,293,900 | 450,000 | 25.0 |
| Ultimate | 9½ | 24.1 | 3.00 | 1,658,500 | 550,000 | 25.0 |
Shock Sub
A simple, rugged, cost-effective answer to axial bit vibration in hard-rock and hammer-drilling applications. The Wenzel Shock Sub reduces bit vibration without lifting the bit off its point of contact — protecting BHA components and calibrated MWD equipment while extending bit life.
Used alongside anti-friction tools it spreads oscillation along the drill string, cutting drag through the wellbore, improving weight transfer to bit, and extending capability for longer horizontal sections. Offered in a wider range of sizes than most alternatives on the market.
- Reduces bit vibration in hard/abrasive formations
- Improves ROP and extends BHA service life
- Pairs with anti-friction tools to cut string drag
- Protects MWD tools from axial vibration
- Simple design, easy to maintain and re-run
- Widest size range of any shock sub on the market
| Nominal OD (in) | Length (ft) | Thru bore (in) | Tensile yield (lb) | Torsional limit (ft·lb) | Weight (lb) |
|---|---|---|---|---|---|
| 3⅜ | 7.9 | 1.00 | 102,000 | 7,300 | 225 |
| 4¾ | 10.7 | 1.50 | 561,500 | 20,000 | 540 |
| 6¼ | 11.7 | 2.25 | 926,600 | 37,900 | 1,000 |
| 8 | 11.9 | 2.75 | 1,378,800 | 82,200 | 1,690 |
| 9½ | 12.3 | 3.00 | 1,209,000 | 131,000 | 2,500 |
| 12 | 12.0 | 3.00 | 1,628,300 | 227,900 | 3,900 |
| 14 | 14.0 | 3.00 | 2,500,000 | 361,900 | 5,600 |
Multiple Activation Circulating Sub
Multistage circulating sub System is a simple reliable tool enabling increased BHA circulating rates when required. Primarily the Circulating sub System was developed to enable the pumping of aggressive LCM pills and to increase circulating rates when drilling small holes. Alternatively the Circulating sub has found a niche in completion and workover applications, proving most effective when it is imperative to have a clean well bore.
- Multistage circulating sub is an ideal tool used at the wellhead of large Inclination Angle well and horizontal well.
- According to the standards all the circulating sub have two circulating Holes to reduce the risk of blockage.
- Multistage circulating sub allowing Reverse circulation of the total flow Area.
- Before ball arrived catcher joint the circulating Joint will be opened to Prevent the ball from being damage during activation process.
- Tools open and close at least six times.
- Lost circulation
- Hole enlargement applications
- Coring applications
- Well cleanout & Wellhead cleanout
- Horizontal and directional drilling
- Surge protections & Tripping Dry Pipes
Stabilizers
Two stabilizer families covering the BHA, from fixed integral-blade designs to field-serviceable replaceable sleeves — both built to prevent differential sticking, reduce vibration and pipe whirl, and hold trajectory in straight, directional, and horizontal wells.
Integral Blade Stabilizers
A one-piece stabilizer body that keeps drill collars and drill pipe away from the borehole wall, preventing differential sticking while reducing vibration and drill-pipe whirl to maintain drilling trajectory.
- Spiral integral blade stabilizer
- Straight integral blade stabilizer
- Non-magnetic integral blade stabilizer
Replaceable Sleeve Stabilizers
A BHA stabilizer built from an integral mandrel and a separate high-strength steel sleeve, mechanically stabilizing the assembly to avoid unintentional sidetracking and vibration while preserving hole quality.
- Straight or spiraled blade options
- Blades hard-faced for wear resistance
- Sleeve replaceable independent of mandrel
- Available from 5½" up to 36" — the widest range in the group
Roller Reamers
Designed and manufactured by Redback Drilling Tools & Manufacturing, this range of roller reamers improves drilling efficiency and reduces cost. A pressure-equalized, lubricated bearing system keeps cutters running effectively in high-pressure, downhole environments, while cutter seals keep mud and cuttings out of the bearings.
The low torque point of stabilization lets the roller cutters roll around the hole, reducing stick-slip and vibration and raising mean time between failures (MTBF) for the rest of the BHA. Unlike fixed-blade stabilizers, the stepped profile only opens the hole to the reamer's dressed diameter — removing ledges and mini-doglegs with less wall damage, and smoothing the profile for drilling, logging, coring, and casing-running.
- Pressure-equalized, lubricated bearing system
- Sealed cutters keep mud and cuttings out of bearings
- Reduces stick-slip and vibration across the BHA
- Less hole-wall damage than fixed blade stabilizers
- Removes ledges and mini-doglegs from the borehole
- Smoother wall profile aids logging, coring, casing running
PDC Integral Fixed Blade Reamer
A bi-directional, integral fixed-blade reamer body dressed with serrated tungsten-carbide-protected PDC cutters. Built from high-strength carbon steel (120k min. yield) exceeding API Spec 7-1. Not suitable for sour service — should not be used in high H₂S gas or CO₂ wells.
8-3/8" Gauge
BODY 2010 SERIES
| Number of blades | 3 |
|---|---|
| Blade length | 16" |
| Equivalent wrap angle | 270° |
| Min inside bore | Ø2.8125" |
| Total length | 82.5" |
| Top connection | NC50 box — bore back relief |
| Bottom connection | NC50 pin — pin relief groove |
| Flow-by area | 14.5 sq in |
| Blade gauge diameter | Ø8.375" |
| Weight dressed | 303 kg |
| Tensile load rating | 674,289 lb |
| Basic torsional rating | 26,675 ft·lb |
| PDC quantity | 6 per blade (18 total), Ø13mm |
12-1/8" Gauge
BODY 2049 SERIES
| Number of blades | 4 |
|---|---|
| Blade length | 18" |
| Equivalent wrap angle | 288° |
| Min inside bore | Ø3.00" |
| Total length | 94.6" |
| Top connection | 6⅝" Reg box — bore back relief |
| Bottom connection | 6⅝" Reg pin — pin relief groove |
| Flow-by area | 39.1 sq in |
| Blade gauge diameter | Ø12.125" |
| Weight dressed | 565 kg |
| Tensile load rating | 1,150,420 lb |
| Basic torsional rating | 50,704 ft·lb |
| PDC quantity | 10 per blade (40 total), Ø13mm |
Torsional Vibration Mitigation Tool
A mechanical, in-string tool that manages stick-slip and high-frequency torsional oscillation (HFTO) between the rotary system and the bit — engineered by NOV as the PosiTrack™ TVM, giving rotary steerable systems the torsional stability to stay on track.
PosiTrack™ TVM Tool
NOV / DOWNHOLE
A patented, pressure-compensated telescoping mechanism that absorbs torsional oscillations caused by stick-slip, bit overengagement, and inconsistent weight transfer — giving rotary steerable systems the torsional stability to stay on track.
- Reduces stick-slip and helps manage HFTO
- Optimizes drill bit depth of cut
- Absorbs torque spikes from sudden RPM reduction
- Variable, adjustable settings
- High-temperature build available to 450°F on request
- Patented technology
| Parameter | 5 in | 6¾ in |
|---|---|---|
| ID | 1⅜ in | 2¼ in |
| Length | 19.6 ft | 20 ft |
| Weight | 1,020 lb | 1,475 lb |
| Max stroke | 10 in | 7¾ in |
| Torsional yield | 20,400 ft-lb | 41,200 ft-lb |
| Tensile yield | 450,000 lb | 860,000 lb |
| Temp rating | 300°F (150°C) | 300/450°F (150/230°C) |
Specifications compiled from manufacturer technical data sheets and are subject to change without notice. Contact us for pricing, availability, and application-specific configuration.