Jysz Double Acting Hydraulic-Mechanical Drilling Jar

• Manufacturing Process: CNC Milling
• Surface Treatment: Spray-Paint
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• Connection: Nc31,Nc50
• Transport Package: Wooden Box
• Model NO.: JYSZ121
• Specification: 121mm, 178mm, 203mm, 207mm
• Trademark: TIANHE
• Origin: China
• HS Code: 8431431000
• Production Capacity: 5000piece/Year

Product Description

 

Product Description

(The drilling jar is a double acting jar) This drilling jar is designed to deliver hydraulic delay when jarring in the up direction, and mechanical release when jarring in the down direction. It provides excellent functional stability and strong jarring forces in both jarring direction. It is used to free stuck drill string components and is recommended for directional/deep wells drilling application.

Working principle

• Up Jarring

Lower the drill stem to ensure that drilling jar is closed completely (in locking position). Up jarring is achieved by slowly increasing the lifting force on the drill stem, until there is sufficient pull force to overcome the spring resistance and initial hydraulic time delay. During the time delay, the overpull at surface can be adjusted to vary the desired impact force. When the mandrel reaches the trigger position, there is a sudden release in resistance, the elastic potential energy stored within the drill string will be transmitted to forward up jarring impact energy. After impact, apply a downward force sufficient to close jar in locking position, then repeat the jarring cycle as required.

• Down Jarring

Lift and lower the drill stem to ensure that the drilling jar is closed completely (in locking position). Down Jarring is achieved by applying sufficient downward force to compress the spring and store elastic potential energy. When the pressure of the jar is greater than the desired unlocking force, the grapple will slide away from the mandrel to release the locking, performing down jarring action. Repeat the procedures to produce continuous down jarring action.

Detailed Photos

Product Parameters

Specifications - JYSZ Double Acting Hydraulic-Mechanical Drilling Jar

Model	JYSZ121	JYSZ159	JYSZ165	JYSZ178	JYSZ203	JYSZ241
Product Code	1708000	1710000	1711000	1713000	1715000	1717000
O.D. (mm)	121	159	165	178	203	241
I.D. (mm)	51	57.2	57.2	64	71.4	76.2
API Connection	NC38	NC46	NC50	NC50	6 5/8 REG	7 5/8 REG
Overall Length (mm)	4670	5300	5300	5880	5830	6250
Total Weight (kg)	295	620	665	850	1120	1770
Up Jarring Free Stroke (mm)	152	152	152	152	152	152
Down Jarring Free Stroke (mm)	152	152	152	152	152	152
Max. Up Jarring Force (kN)	350	700	700	800	1000	1250
Max. Rated Release Force for Up Jarring (kN)	180	400	400	400	420	440
Rated Release Force for Down Jarring (kN)	80	180	180	180	190	200
Max. Tensile Load (kN)	1600	3400	3400	3700	4400	5400
Working Pull Force (kN)	1100	2000	2000	2400	2800	3500
Max. Torque Load (kN•m)	20	51	51	60	100	129
Working Torque (kN•m)	15	25	25	30	35	40
Pump Area (cm²)	55	100	100	110	176	238
Length of Flexible Joint (mm)	3555	4265	4265	3710	3510	3410
Total Length (mm)	8120	9450	9450	9460	9210	9530

  

Certifications

 

 

Packaging & Shipping

 

All the packing will be suitable for export packing. All precautions will be taken to protect the cases from damage during overseas transportation,so as to receive them under proper conditions at the final destination.

Company Profile

Tianhe Oil Group Huifeng Petroleum Equipment Co., Ltd is a modernized medium-scale enterprise specialized in production of oil and gas tools.

As an API-Certified established manufacturer and supplier of a comprehensive range of downhole equipment with related accessories, we are committed to providing the highest Quality products for the Petroleum and natural gas industry since 1973.

Tianhe Oil Group strongly believes and promotes Total Quality Management, implement the ISO quality management system and HSE management system and API Standard, which has been deeply implanted into every person's thought and carried out into every aspect of work.

So far, Tianhe Oil Group has established strong business relationships with over 200 international oil & gas companies in supporting the top 50 oil producing countries.

We take pride in delivering superior performances and reliability. Our objective is to exceed your expectations, improve your economics and be an integral part of your strategies.