Hydraulic / Mechanical Drilling Jar (HMJ)

Quantity	2 - 100
Price	1500

MOQ	1 1
Port	Tianjin
Packaging	Customized packaging

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Quick Details (View All)

Type	Drilling jar	Use	Well Drilling
Color	Customized	Applicable Industries:	Energy & Mining
Warranty	1 year	Marketing Type	Ordinary Product
Material:	Carbon steel	O.D (mm):	121 - 241
Product name	API 7-1 Mechanical-Hydraulic Drilling Jar/drill tools	Connection	NC38....7 5/8 REG
Advantage	High Performance	Certification	API 7-1

Product Details

1.Hydraulic drill jar

Hydraulic drill jar is an integral hydraulic jar with up jarring and down jarring.when downhole drilling tools are stuck,the jar can provide a huge impact to unfreeze with up jarring. Thus normal drilling operation can be recovered quickly.

When the jar is used. Operators can adjust to picking up it or slacking off it on surface to create up jarring impact or down jarring impact(without addition to the torque or adjustment to the outside part) and adjust impact from very small range to the biggest range needed. The jar can be operated easily and conveniently with high reliability and applied to many downwhole activities of drilling. Coring, fishing, workover etc.

OD	ID	Connection	Max working load(lbf)	Tensile Yield Strength(lbf)	Torsion yield strength(lbf-ft)	Up Stroke	Down Stroke
4 3/4”	2 1/4”	NC38	80,000	440,000	20,000	8”	7”
6 1/4”	2 3/4”	NC50	150,000	650,000	50,000	8”	7”
6 1/2”	2 3/4”	NC50	175,000	850,000	60,000	8”	7”
7”	2 3/4”	NC50	200,000	1,050,000	65,000	8”	7”
8”	3”	6 5/8REG	300,000	1,500,000	118,000	8”	7”
9 1/2”	3”	7 5/8REG	500,000	1,900,000	180,000	8”	8”

Other sizes available under customer needs,

2.Double Acting Hydraulic-Mechanical Drilling Jar

This is a jarring and stuck releasing tool, it integrates the up jar and down jar impact and can release the stuck accident occurring during drilling operation. According to the requirement, the tool can automatically control the impact strength and times of jarring Moreover, it is an ideal tool for vertical well and deflecting well.

OD	ID	Connection	Max working load(lbf)	Tensile Yield Strength(lbf)	Torsion yield strength(lbf-ft)	Up Stroke	Down Stroke
4 7/8”	2 1/32”	NC38	110,160	440,000	20,000	9”	6”
6 3/8”	2 1/4”	NC46	139,380	610,000	50,000	9”	6”
6 3/4”	2 1/4”	NC46	139,380	850,000	75,000	9”	6”
7”	2 1/4”	NC50	139,380	1,050,000	100,000	9”	6”
8”	2 13/16”	6 5/8REG	183.000	1,500,000	150,000	9”	6”

Other sizes available under customer needs.

Jarring Up

When jarring up apply overpull to overcome the latch setting, which initiates the hydraulic delay. During this hydraulic delay sequence the jar can be pulled harder if required which increases the impact force. See the Jar specifications to determine maximum pull during delay.

Pick up string weight above the jar + any hole drag above jar + Jar’s latch setting, the jar will now come out of latch.

Example; String weight above jars 120,000 lbs. + hole drag above jars 20,000 lbs. + Jar’s latch setting 85,000 lbs. = 225,000 lbs. required to pull jar out of latch and begin hydraulic delay.

After impact, apply a down force to close jar re-engage latch, then repeat jarring cycle if needed.

Jarring Down

When jarring down apply weight to Jars to overcome Down latch setting and pump open force, at this point the latch will release in the jar allowing it to fire downwards.

Example; Slack off drill string overcoming latch setting, Down Lock setting 45,000 lbs. + pump open force (if pumps are on) 20,000 lbs. = 65,000 lbs. Jars will fire down.

After impact, pick up drill string to re-latch jars and repeat if needed.