02.1
Steady flow at the bit
Drilling fluid normally leaves the bit's nozzles as a steady stream. In sticky formations cuttings build up on the bit face and slow the drilling down.
Drilling performance · Downhole
Jet Bit Sub
Also known as: Bit Jet Enhancement Sub · Bit Jet Enhancement Tool
Developed with
Coil Solutions Inc.
A drilling-performance sub with no moving parts, run between the motor and the bit. It turns steady flow into a pulsating, turbulent jet at the bit face to keep the bit clean and cool and to lift cuttings.
50+wells drilled and counting
4hole sections drilled: 17-1/2, 12-1/4, 8-1/2 and 6 in slim hole
02How it works
Pulsation and high jetting force at the bit face.
02.2
From steady flow to helical pulsation
Run between the motor and the bit, the Jet Bit Sub manipulates the flow rate to produce a helical pulsation. It has no moving parts.
02.3
A hammer-drill effect
The pulsed, highly turbulent flow leaves through the ports of the bit and acts like a hammer drill, while keeping the bit face cooler.
02.4
Cuttings cleared, bit balling prevented
Agitated flow improves hole cleaning, helps prevent bit balling and reduces drilling vibrations, which prolongs the life of the bit.
03In the BHA
Where it sits in the BHA
The sub is threaded between the motor or drill string above and the bit below. It is compatible with mud motor, rotary steerable and rotary assemblies.
- Drilling BHA
- Motor
- Jet Bit Sub
- PDC drill bit
03Jet Bit SubMO ENERGY04PDC drill bit04Specifications
Built for the job, specified per well.
- No moving parts, so minimal risk of downhole failure.
- Compatible with all BHAs: mud motor, rotary steerable system or rotary assembly.
- Helps prevent bit balling, reduce drilling vibrations, prolong PDC bit life and improve hole cleaning.
- Pulsating action creates a hammer-drill effect and keeps the bit face cooler.
- Local manufacturing in Oman supports in-country value.
Available in sizes from 8-7/8 in down to 5-1/2 in. The table shows the 8 in tool; tables for the other sizes will follow.
8 in Jet Bit Sub
- Max. O.D.
- 8" in
- Service
- Standard
- Top connection
- 6-5/8" REG pin
- Bottom connection
- 6-5/8" REG box
- Suggested make-up torque
- 50,000 ft-lbs
- Flow area
- 1.203 sq in
- Body length
- 9-1/8" in
- Working pressure
- 15,000 psi
- Weight
- 129 lb
Three 2026 pilots with an onshore operator in the region (Abu Dhabi, UAE): on-bottom ROP 22% to 49% higher than similar wells on the same rigs, and 23% to 55% higher than the field average.
An Omani operator
Rate of penetration, best well of the campaign
55% higher rate of penetration with the JET BIT SUB
Oman, with the JET BIT SUB
An Omani operator
Rate of penetration, 8-1/2 in section
27 m/hr against an offset average of 15 m/hr; 13 hours saved
8-1/2 in section, Oman, with the JET BIT SUB
An onshore operator in the region (Abu Dhabi, UAE)
On-bottom ROP, 17-1/2 in section
160.45 ft/hr against 107.65 ft/hr for similar wells on the same rig: 49% higher (23% above the field average of 130.46 ft/hr)
17-1/2 in section, June 2026, 1,501 ft of open hole, with the JET BIT SUB
Figures as reported from field runs; results depend on the well and conditions.
05See it explained