API Bowen Equivalent Zjs Jar Intensifier, Downhole Fishing Jar

• Customization: Available
• After-sales Service: Support
• Warranty: Support
• Model NO.: ZJS31B
• Manufacturing Process: CNC Milling
• Surface Treatment: Spray-Paint
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• Thread Type: Reg,Nc50,Fh,Nc#*
• Transport Package: Wooden Box
• Specification: 121mm, 178mm, 203mm, 207mm
• Trademark: TIANHE
• Origin: China
• HS Code: 8431431000
• Production Capacity: 5000piece/Year

Product Description

 

Product Description

 

The ZJS type jar intensifier is a type of downhole fishing jar designed to increase the top jar's jarring force. It runs in conjunction with either YSJ type hydraulic top jar or CSJ type super jar. Its main function is to supply acceleration to the upper end of the jar during the free jarring stroke. The intensifier is essentially a fluid spring that stores strain energy under compression. When the strain is removed,the stored energy is released, accelerating and intensifying the top jarring action.

The top jarring action thus creates a direct impact on the fish. In addition, the fluid helps to absorb the shock from the rebounding drill string after the jarring stroke,protecting both the drill tools and fishing tools from damage.

Working Principle

Normally, the jar intensifier is connected on top of drill collar and on the lower end of the drill stem. When the fishing tool engages with the fish, the drill tool is lifted.A large amount of energy was thus stored in the intensifier when the silicone oil in the top chamber of the piston was compressed. As the tool is lifted, when the top jar reaches it's free impact stroke, the stored energy in the jar intensifier is suddenly released, accelerating the drill collars and jars upward. When the top jar reaches its maximum stroke, a strong top jarring action will impact on the fish, resulting in one time jarring force.

The ZJS type jar intensifier is easy to assemble, operate and maintain. No high pressure pre-loading is required.

Features/Benefits

- User-friendly - Safe to assemble, use, and maintain
- Versatile - Valuable in deep, deviated holes and at shallow depths
- Absorbs shock - Protects tools and string from damage by absorbing shock of rebounding string after jarring stroke

Detailed Photos

Product Parameters

Specifications - ZJS Jar Intensifier  

Parameter / Model	ZJS31B	ZJS34B	ZJS36B	ZJS42B	ZJS44B	ZJS46B	ZJS62B	ZJS64B	ZJS70B	ZJS76B	ZJS80B	ZJS90B
Product Code	0501000	0502100	0503000	0505000	0506000	0508000	0510000	0511000	0513000	0514000	0515000	0516000
O.D. (mm)	79	89	95	108	114	121	160	165	178	197	203	229
I.D. (mm)	25.4	28	28	32	38	38	57	57	57	71.4	71.4	76
Overall Length Of Pull Down (mm)	2991	3120	3110	3240	3340	3340	4500	4500	4000	4010	4010	4070
Stroke (mm)	215	215	215	250	250	250	330	330	310	330	330	330
Connection	2 3/8 REG	NC26	NC26	NC31	NC31	NC38	NC50	NC50	NC50	6 5/8 REG	6 5/8 REG	7 5/8 REG
Max.Tensile Load Downhole (kN)	300	400	550	700	800	900	1500	1500	1800	2100	2200	2500
Max.Work Torque (kN.m)	3	3.5	4	6	7	8	15	15	17	20	20	22
Sealing Pressure (MPa)	30	30	30	30	30	30	30	30	30	30	30	30
Pull Down Full Stroke Force (tf)	13~15	15~18	17~20	25~30	25-30	30~35	60~65	60~65	75~85	62~67	62~67	75~85
Weight (kg)	120	150	170	190	200	230	530	560	600	860	900	1030

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.