Description
JYSZ Double Acting Hydraulic Mechanical Drilling Jar
Double Acting Drilling Jar for Stuck Pipe Recovery, Directional Wells and Deep Oilfield Drilling
The SGPE JYSZ Double Acting Hydraulic Mechanical Drilling Jar helps drilling teams release stuck drill string components in demanding oil and gas wells. It provides hydraulic delay for up jarring and mechanical release for down jarring, allowing operators to deliver strong impact force when the drill string, drill collar, stabilizer or bottom hole assembly becomes stuck.
This downhole tool combines the controlled energy build-up of a hydraulic drilling jar with the quick response of a mechanical drilling jar. During upward jarring, the hydraulic delay system gives the drill string time to store elastic energy before release. During downward jarring, the mechanical release system creates a fast and dependable impact. This design gives operators better control when they face stuck pipe, high drag, tight hole sections, difficult wellbore contact or complex BHA conditions.
SGPE supplies the JYSZ series for stuck pipe recovery, directional drilling, deep well drilling, horizontal drilling, extended-reach drilling and high-torque oilfield operations. With multiple sizes, standard API connection options and strong load capacity, this double acting drilling jar helps drilling contractors maintain progress in challenging petroleum wells.
Need help choosing a model? Send SGPE your hole size, API connection, well depth, working pull force and torque requirement. Our team will help you select a suitable JYSZ drilling jar for your drilling project.
Product Overview
The JYSZ Double Acting Hydraulic Mechanical Drilling Jar delivers upward and downward impact force through the drill string. Operators use it when downhole sticking occurs due to differential sticking, key seating, cuttings accumulation, wellbore instability, high friction or difficult contact between the drill string and the borehole.
For up jarring, the hydraulic delay mechanism allows the operator to build surface overpull before release. This process helps the drill string store energy and gives the crew better control over the final impact force. For down jarring, the mechanical release system allows the jar to deliver quick downward impact after the operator applies enough compression force.
Because the tool works in both directions, drilling teams gain more options during stuck pipe events. They can jar upward, jar downward or repeat the jarring cycle according to the stuck point, well condition and BHA response. This makes the JYSZ series a practical choice for drilling programs that require stable release, strong jarring force and reliable performance under repeated downhole loads.
Key Features of JYSZ Double Acting Drilling Jar
Double Acting Up and Down Jarring Performance
The tool delivers impact force in both upward and downward directions. This double acting function helps crews respond to different stuck pipe conditions without pulling out of hole to change tools.
When the stuck point needs upward impact, the hydraulic delay system supports a controlled release. When the operation requires downward impact, the mechanical release system provides fast down jarring action. This design helps operators react quickly during unexpected downhole problems.
Hydraulic Delay for Controlled Up Jarring
During up jarring, the hydraulic delay system allows the drill string to store elastic energy before impact. The operator can adjust surface overpull during the delay period and control the expected jarring force more accurately.
This feature works especially well in deep wells, directional wells and high-friction wellbores where crews need a stable and predictable upward blow.
Mechanical Release for Reliable Down Jarring
During down jarring, the operator applies downward force to compress the spring and store energy. When the force reaches the required release value, the locking mechanism releases and the jar delivers downward impact through the drill string.
This mechanical release structure gives the crew a fast response and supports repeated jarring cycles in difficult petroleum downhole conditions.
Strong Jarring Force for Harsh Oilfield Conditions
The JYSZ series covers sizes from 121 mm to 241 mm OD and provides maximum jarring force up to 1250 kN. This model range helps customers match the jar with different hole sizes, BHA designs, well depths and operating loads.
For smaller hole sections, customers may choose a compact model. For deep wells, horizontal wells or high-load drilling conditions, SGPE can recommend a heavy-duty model with higher tensile and torque capacity.
High Tensile Load and Torque Capacity
Oil and gas drilling often involves heavy drill collars, high tensile loads, torque fluctuation and repeated impact. The JYSZ series supports these conditions with maximum tensile load up to 5400 kN and maximum torque load up to 129 kN·m, depending on the selected model.
These load ratings help the tool perform reliably in drilling programs where strength, stability and repeatable operation matter.
Repeatable Jarring Cycles
After each impact, the operator can close the jar again and repeat the jarring cycle. This repeatable operation helps the crew continue working on the stuck point until the drill string releases or the drilling plan changes.
Working Principle
Up Jarring
Before up jarring, the operator lowers the drill stem and makes sure the drilling jar fully closes in the locking position.
The operator then slowly increases the lifting force on the drill stem. As the pull force rises, the drill string stores elastic potential energy. When the pull force overcomes spring resistance and starts the hydraulic delay, the operator can adjust surface overpull to control the expected impact force.
When the mandrel reaches the trigger position, the resistance drops suddenly. At that moment, the stored energy in the drill string changes into upward jarring impact energy. The tool then delivers a strong upward blow to help free stuck drill string components in the wellbore.
After the impact, the operator applies enough downward force to close the jar back into the locking position. The crew can then repeat the up jarring cycle as required.
Down Jarring
Before down jarring, the operator lifts and lowers the drill stem to confirm that the drilling jar has fully closed in the locking position.
The operator then applies enough downward force to compress the spring and store elastic energy. When the force inside the jar becomes greater than the required unlocking force, the grapple moves away from the mandrel and releases the locking mechanism.
The jar then performs the down jarring action. The operator can repeat the same procedure to generate continuous downward impact during oilfield drilling operations.
Oilfield Applications
The SGPE JYSZ Double Acting Hydraulic Mechanical Drilling Jar fits a wide range of oil and gas drilling applications. Drilling teams often use it for stuck pipe recovery, directional well drilling, deep oil and gas wells, horizontal wells, extended-reach wells, high-drag wellbores and high-torque drilling operations.
The tool also performs well in complex petroleum wellbores where the drill string or BHA may face high friction, tight hole sections, difficult contact conditions or unexpected sticking problems. In many drilling programs, operators install this jar as part of the bottom hole assembly to support stuck BHA release and emergency jarring operations.
With both upward and downward impact capability, the JYSZ series helps drilling contractors reduce downtime, improve stuck pipe response and maintain drilling progress in demanding oilfield conditions.
Benefits for Oil and Gas Drilling Operations
Faster Stuck Pipe Recovery
Stuck pipe can lead to drilling delays, fishing operations, sidetracking risk and high non-productive time. This drilling jar helps the crew apply strong impact force to the stuck point and improves the chance of releasing stuck components faster.
Better Operational Flexibility
Different stuck pipe events require different jarring directions. The double acting design allows operators to jar upward or downward according to the downhole situation. This flexibility helps the crew respond faster during emergency drilling conditions.
Lower Non-Productive Time
A reliable drilling jar can help drilling teams recover from sticking incidents more efficiently. With controlled and repeatable impact force, the JYSZ series supports smoother drilling operations and helps reduce NPT caused by downhole sticking.
Practical Fit for Different Drilling Programs
SGPE offers several JYSZ models with different OD, ID, API connection, tensile load, torque capacity, working pull force and jarring force. Customers can choose the right model according to hole size, well depth, drill string design and operating conditions.
Strong Support for Heavy-Duty Downhole Loads
The JYSZ series suits drilling applications where downhole tools must handle heavy loads, torque stress, repeated impact and complex mechanical conditions. This makes it a strong option for deep wells, directional wells, horizontal wells and other demanding petroleum drilling environments.
Technical Specifications
JYSZ Double Acting Hydraulic-Mechanical Drilling Jar
| Model | JYSZ121 | JYSZ159 | JYSZ165 | JYSZ178 | JYSZ203 | JYSZ241 |
|---|---|---|---|---|---|---|
| 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 | 740 | 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. Jarring Force (kN) | 350 | 700 | 700 | 800 | 1000 | 1250 |
| 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 |
Get model selection support from SGPE.
Send your hole size, API connection, well depth, working pull force, torque requirement and quantity. SGPE will help you select a suitable JYSZ drilling jar and provide technical specifications for your project.
Model Selection Guide
Choosing the right double acting drilling jar depends on the well condition, drill string design and operating requirements. SGPE can help customers select the proper model according to actual drilling parameters.
Hole Size and Tool OD
The OD of the drilling jar must match the wellbore and BHA design. The JYSZ series includes models from 121 mm to 241 mm, covering different drilling tool sizes for oil and gas wells.
Required Jarring Force
Different stuck pipe conditions require different impact force levels. Smaller drilling assemblies may use JYSZ121, while larger and deeper wells may require JYSZ203 or JYSZ241 for higher jarring force.
Tensile Load and Working Pull Force
The selected model should match the expected drill string load. Customers should compare maximum tensile load and working pull force with planned drilling parameters before final selection.
Torque Requirement
Directional wells, deep wells and extended-reach wells often involve high torque. Operators should choose a model with suitable maximum torque load and working torque to support safe operation.
API Connection
The JYSZ drilling jar supports common API connections, including NC38, NC46, NC50, 6 5/8 REG and 7 5/8 REG. Customers can select the connection according to their drill string configuration and BHA design.
Quality and Supply Support
SGPE focuses on practical and reliable oilfield drilling tools for international customers. For the JYSZ Double Acting Hydraulic Mechanical Drilling Jar, SGPE supports customers throughout model selection, technical communication and export supply.
SGPE offers different drilling jar models to match various hole sizes, BHA designs and drilling requirements. The JYSZ series supports standard API connection options, so customers can select a suitable connection according to their drill string configuration and project conditions.
Before order confirmation, SGPE can provide technical specifications and help customers review key parameters such as tool size, API connection, working pull force, torque capacity and required jarring force. This support helps customers choose a suitable model based on real drilling conditions rather than only product size.
For international oilfield projects, SGPE can arrange export packaging and provide product documentation according to project needs. Customers can also request technical datasheets, connection confirmation and project communication support before order placement.
For projects with special requirements, customers can contact SGPE before ordering to discuss connection type, operating parameters, well conditions and application requirements. This allows SGPE to recommend a more suitable double acting hydraulic mechanical drilling jar for the specific drilling operation.
Why Choose SGPE JYSZ Drilling Jar
SGPE supplies oilfield drilling tools and petroleum downhole equipment for demanding drilling operations. The JYSZ Double Acting Hydraulic Mechanical Drilling Jar gives customers a practical solution for stuck pipe recovery, directional drilling, deep well drilling and complex wellbore applications.
Customers choose SGPE because the JYSZ series combines double acting jarring function, controlled hydraulic delay, reliable mechanical release, strong jarring force and multiple model options. These features help drilling crews handle different stuck pipe conditions while keeping the operation simple and efficient.
SGPE also helps customers select the right model before ordering. Customers can share hole size, API connection, well depth, expected working load, torque requirement and application condition. SGPE will review these details and recommend a suitable drilling jar for the project.
When you need a double acting drilling jar, hydraulic mechanical drilling jar, oilfield drilling jar, petroleum downhole tool or stuck pipe recovery tool, SGPE can help confirm the right model, check key operating parameters and prepare quotation details before order placement.
Information Required for Quotation
To receive a faster and more accurate quotation, customers can send SGPE the required model or outside diameter, hole size, API connection and quantity. It is also helpful to provide the well depth, expected working pull force, torque requirement and required jarring direction or operating condition.
Customers can also share the drilling application, such as directional well drilling, deep well drilling or horizontal well drilling, together with the delivery destination.
E-Mail:
info@sgpe.com
FAQ about Double Acting Hydraulic Mechanical Drilling Jar
1. What is the JYSZ Double Acting Hydraulic Mechanical Drilling Jar?
The JYSZ Double Acting Hydraulic Mechanical Drilling Jar is a downhole drilling tool for oil and gas wells. It helps drilling teams release stuck drill string components by delivering impact force in both upward and downward directions.
The tool combines hydraulic up jarring and mechanical down jarring in one body. During up jarring, the hydraulic delay system helps the drill string store energy before release. During down jarring, the mechanical release system creates a fast downward impact. This double acting design gives operators more control during stuck pipe recovery, directional drilling, deep well drilling and complex wellbore operations.
2. What does a double acting drilling jar do in oil and gas drilling?
A double acting drilling jar helps the drilling crew apply impact force in two directions. It can jar upward when the stuck point needs pulling force, and it can jar downward when the operation requires compression force.
In real oilfield drilling operations, stuck pipe problems may come from differential sticking, key seating, cuttings build-up, high drag, poor hole cleaning or complex wellbore contact. A double acting jar gives the crew more response options. Operators can choose up jarring, down jarring or repeated jarring cycles according to the downhole condition.
3. How does hydraulic up jarring work?
During hydraulic up jarring, the operator first closes the jar in the locking position. Then the operator slowly increases the lifting force on the drill string.
As the overpull rises, the drill string stores elastic energy. The hydraulic delay system gives the operator time to adjust surface pull force before the tool releases. When the mandrel reaches the trigger position, resistance drops suddenly. The stored energy then changes into upward impact force.
This controlled process helps the tool deliver a strong upward blow to the stuck point. It works especially well in deep wells, directional wells and high-friction wellbores where operators need stable up jarring performance.
4. How does mechanical down jarring work?
During mechanical down jarring, the operator applies downward force to the drill string. This force compresses the internal spring and stores energy inside the tool.
When the compression force reaches the required release value, the grapple moves away from the mandrel and releases the locking mechanism. The tool then delivers downward impact through the drill string.
This mechanical release action gives the crew a quick down jarring response. It helps when the stuck condition requires downward impact, especially in wells with complex BHA contact, high drag or difficult hole conditions.
5. Where can the JYSZ drilling jar be used?
The JYSZ Double Acting Hydraulic Mechanical Drilling Jar can serve a wide range of oil and gas drilling applications. Drilling teams often use it for stuck pipe recovery, directional well drilling, deep oil and gas wells, horizontal wells, extended-reach wells, high-drag wellbores and high-torque drilling operations.
It also performs well in complex petroleum wellbores where the drill string or bottom hole assembly may face high friction, difficult contact conditions or unexpected sticking problems. In many drilling programs, operators install this jar as part of the BHA to support stuck BHA release and emergency jarring operations.
With both upward and downward impact capability, the tool helps drilling contractors reduce downtime, improve stuck pipe response and maintain drilling progress in demanding oilfield conditions.
6. Is the JYSZ drilling jar suitable for directional, deep and horizontal wells?
Yes. The JYSZ drilling jar works well in directional wells, deep wells, horizontal wells and extended-reach wells. These drilling environments often create high friction, high torque and complex contact between the drill string and the wellbore.
Because the tool can jar in both directions, it gives the crew more flexibility when the drill string becomes stuck. The hydraulic delay system supports controlled up jarring, while the mechanical release system supports reliable down jarring. This combination helps operators handle difficult downhole conditions with better control.
7. How do I choose the right JYSZ drilling jar model?
To choose the right JYSZ drilling jar model, customers should consider the hole size, BHA design, drill string load, torque requirement and expected jarring force.
SGPE offers several models, including JYSZ121, JYSZ159, JYSZ165, JYSZ178, JYSZ203 and JYSZ241. Smaller drilling assemblies may use a compact model such as JYSZ121. Larger deep well or high-load applications may require JYSZ203 or JYSZ241.
Before selection, customers should compare the tool OD, ID, API connection, tensile load, working pull force, torque capacity and maximum jarring force. SGPE can also help recommend a suitable model according to the drilling parameters.
8. What information should I provide before requesting a quotation?
To receive a faster and more accurate quotation, customers can send SGPE the required model or outside diameter, hole size, API connection, quantity and well depth. It is also helpful to provide drill string design, BHA information, expected working pull force, torque requirement and required jarring force.
In addition, customers can share the drilling application, such as directional well drilling, deep well drilling or horizontal well drilling, together with the delivery destination. These details help SGPE understand the actual operating condition, select a suitable double acting hydraulic mechanical drilling jar, and provide more accurate technical support and pricing for the project.
9. What API connections are available for the JYSZ drilling jar?
The JYSZ drilling jar supports common API connections for oilfield drilling strings. Available connections include NC38, NC46, NC50, 6 5/8 REG and 7 5/8 REG, depending on the selected model.
Customers should choose the connection according to their drill string configuration and BHA design. If the project has special connection requirements, customers can contact SGPE before ordering. SGPE can discuss the tool size, connection type and operating parameters according to the drilling program.
10. What are the main advantages of the JYSZ Hydraulic Mechanical Drilling Jar?
The JYSZ drilling jar offers several advantages for oil and gas drilling operations. It delivers both up jarring and down jarring force, so the crew can respond to different stuck pipe situations. The hydraulic delay system helps operators control the up jarring impact more accurately, while the mechanical release system gives fast and reliable down jarring action.
In addition, the JYSZ series offers multiple sizes, strong jarring force, high tensile load and reliable torque capacity. These advantages make it suitable for stuck pipe recovery, deep well drilling, directional drilling, horizontal drilling and demanding downhole operations.
11. Can the JYSZ drilling jar work with other BHA tools?
Yes. The JYSZ drilling jar can work as part of the bottom hole assembly together with drill collars, stabilizers, heavy weight drill pipes and other downhole drilling tools.
In many oilfield operations, crews place the jar in the BHA to prepare for possible sticking problems. When the drill string or BHA becomes stuck, the operator can activate the tool and apply impact force through the drill string. This setup helps improve stuck pipe response and supports safer drilling progress in complex wells.
12. Why choose SGPE for JYSZ Double Acting Hydraulic Mechanical Drilling Jar?
SGPE supplies oilfield drilling tools and petroleum downhole equipment for international drilling projects. For the JYSZ Double Acting Hydraulic Mechanical Drilling Jar, SGPE can provide model selection support, technical specifications, export packaging and responsive quotation service.
Customers can send SGPE their hole size, API connection, working load, torque requirement and drilling application. SGPE can then help match a suitable drilling jar model. Whether the project involves stuck pipe recovery, directional drilling, deep well drilling or horizontal well drilling, SGPE can support customers with practical product information and reliable supply service.
Request a Quote
Contact SGPE for JYSZ Double Acting Hydraulic Mechanical Drilling Jar
Looking for a reliable Double Acting Hydraulic Mechanical Drilling Jar for your oil and gas drilling operation?
Send SGPE your required model, hole size, API connection, quantity, working load, torque requirement and drilling application. Our team will help you select a suitable JYSZ drilling jar and provide a competitive quotation.
E-Mail:
info@sgpe.com
