Hydraulic drilling jar with mechanical jars

General Description

Hydralic jar with mechanical latch (HJML) is a double acting jar.

Designed to deliver hydraulic delay when jarring up or down equipped with mechanical lock in each direction.

The HJML incorporates a latch mechanism to keep the jar locked in the neutral position and eliminate unexpected jarring while tripping or racking back on the derrick.

Features & Benefits

The HJML is hydraulically controlled and jars in both directions with impact force controlled by the operator.

Impact force is controlled by a metering device that ensures consistent delay times over the full range of operating temperatures

The HJML operates via a simple up and down motion and is unaffected by torque.

Specifications

Imperial	HJML475	HJML650	HJML800	HJML950
Nominal 0D	4.88 in	8.15 in	8. 5 in	9.48 in
Thru Bore	2.2 in	2.76 in	2.76 in	3 in
Length in open position	18 ft	22.3 ft	22.3 ft	22.3 ft
Length in fixed position	16 ft	20.3 ft	20.3 ft	20.3 ft
Free stroke after hydraulic delay during extension	7.28 in	7.87 in	7.87 in	7.87 in
Free stroke after hydraulic delay during compression	7.28 in	7.87 in	7.87 in	7.87 in
Hydraulic delay test load *	40780 – 47 400 lbs	94 800 – 103 600 lbs	94 800 – 103 600 lbs	03 600 – 112 400 lbs
Hydraulic delay time *	30 -150 sec	30 -150 sec	30-150sec	30-150sec
Jar working area	12.4 in.sq.	30.7 in.sq.	30 7 in.sq.	41-2 in.sq.
Maximum tensile (compressive) load during hydraulic delay	77 150 lbs	242 500 lbs	242 500 lbs	242500 lbs
Maximum tensile load during pulling out of hole	286 600 lbs	804 700 lbs	804 700 lbs	1197 100 lbs
Maximum torque	13 000 ft-lbs	60 700 ft-lbs	60 700 ft-lbs	122 960 ft-lbs
Connecting threads	NC38	6 5/8 Reg	6 5/8 Reg	7 5/8 Reg
Make up torque	6 680 -10 120 ft-lbs	47 000 – 50 600 ft-lbs	47 000 – 50 600 ft-lbs	57 850 – 65100 ft-lbs
Maximus operating temperature ***	248 °F	248 °F	248 °F	248 °F
Weight	705.5 lb	2425 lb	2425 lb	3 307 lb
Overhaul period, hours below the rotary table **	500 hours	750 hours	750 hours	750 hours

* Actual values are indicated in the tool test repon
** Tool should be sent for maintenance when cumulative time below rotary table reaches 250 hours, in case is used in drilling fluid with chlorides content of more than 50,000 mg/l.
***As per special request tools can be manufactured in HT version with working temperature of up to J50°C (302°F).

Metric	HJML475	HJML650	HJML800	HJML950
Nominal 0D	124 mm	207mm	207mm	241 mm
Thru Bore	56 mm	70 mm	70mm	76 mm
Length in open position	5 500 mm	6 800 mm	6 800 mm	6 800 mm
Length in fixed position	4 900 mm	6 200 mm	6 200 mm	6 200 mm
Free stroke after hydraulic delay during extension	185 mm	200 mm	200 mm	200mm
Free stroke after hydraulic delay during compression	185 mm	200 mm	200 mm	200 mm
Hydraulic delay test load *	18 500 – 21 500 kgf	43 000 – 47 000 kgf	43 000 – 47 000 kgf	47 000 – 51 000 kgf
Hydraulic delay time *	30 -150 sec	30 -150 sec	30 -150 sec	30-150sec
Jar working area	80 sm.sq.	198 sm.sq.	198 sm.sq.	266sm.sq.
Maximum tensile (compressive) load during hydraulic delay	35 000 kgf	110 000 kgf	110 000 kgf	110000kgt
Maximus tensile load during pulling out of hole	130 000 kgf	3ó5 000 kgf	365 000 kgf	543 000 kgf
Maximus torque	1 800 kgf*m	8 400 kgf*m	8 400 kgf*m	17 000 kgf*m
Connecting threads	NC38	6 5/8 Reg	6 5/8 Reg	7 5/8 Reg
Make up torque	1 200 – 1 400 kgf*m	ó 500 – 7 000 kgf*m	6 500 – 7 000 kgf*m	8 000 – 9 000 kgf*m
Maximus operating temperature ’**	120 °C	120 °C	120 °C	120 °C
Weight	320 kg	1100 kg	1100 kg	1 500 kg
Overhaul period, hours below the rotary table	500 hours	750 hours	750 hours	750 hours

* Actual values are indicated in the tool test repon
** Tool should be sent for maintenance when cumulative time below rotary table reaches 250 hours, in case is used in drilling fluid with chlorides content of more than 50,000 mg/l.
***As per special request tools can be manufactured in HT version with working temperature of up to J50°C (302°F).