Description
YSJ Type Z Oil Jar
Hydraulic Drilling Jar for Oilfield Fishing, Coring, Workover and Stuck Pipe Recovery
Product Overview
The YSJ Type Z Oil Jar delivers a controlled upward impact for oil and gas well operations. Drilling crews use this hydraulic drilling jar when drill pipe, drilling tools, bottom hole assemblies, fishing tools, coring tools or other downhole equipment become stuck in the wellbore.
This hydraulic up jar builds energy in the drill string through hydraulic time delay. When the tool reaches the release position, it sends a strong up-jarring force to the stuck point. This impact helps crews recover stuck downhole tools, reduce non-productive time and keep drilling, fishing, coring, workover and well intervention operations moving efficiently.
SGPE supplies YSJ Type Z Oil Jar in sizes from 95 mm to 229 mm OD. The tool combines a simple hydraulic structure, stable performance, easy rig-site handling and quick reset for continuous jarring. For difficult stuck pipe jobs, SGPE recommends running it with the ZSJ Type Jar Intensifier to increase impact energy and improve shock transmission.
As a practical oilfield downhole tool, the YSJ Type Z Oil Jar supports stuck drill pipe release, stuck BHA recovery, fishing string operation, coring tool recovery and workover tool recovery in demanding well conditions.
Contact SGPE for YSJ Type Z Oil Jar specifications, technical datasheet, model selection support and a competitive quotation for your oilfield project.
Product Highlights
| Item | Details |
|---|---|
| Product Name | YSJ Type Z Oil Jar |
| Tool Type | Hydraulic drilling jar / hydraulic up jar |
| Main Function | Provides upward jarring force for stuck pipe recovery and downhole tool recovery |
| OD Range | 95 mm to 229 mm |
| Work Stroke | 245 mm to 380 mm |
| Max. Upward Jarring Load | 160 kN to 900 kN |
| Sealing Pressure | 30 MPa |
| Max. Working Temperature | 150°C |
| Common Connections | NC26, NC31, NC38, NC50, 6 5/8 REG, 7 5/8 REG |
| Typical Applications | Oilfield fishing, petroleum drilling, coring, workover, well intervention, stuck BHA recovery |
Key Advantages
High Up-Jarring Force
The YSJ Type Z Oil Jar delivers strong up-jarring force to help free stuck drill pipe, drill collars, BHA components, fishing assemblies and coring tools in oil and gas wells.
Controlled Hydraulic Delay
The hydraulic delay system gives the drill string time to build tension before release. This process transfers impact to the stuck point more efficiently and improves jarring performance during stuck pipe recovery.
Practical Hydraulic Structure
The tool uses a simple hydraulic design with fewer complex components. This structure supports stable downhole performance, easier maintenance and smoother field handling.
Quick Reset for Repeated Jarring
After each impact, the crew can close and reset the jar to the pre-load position. This design allows repeated up-jarring with simple operation, helping crews save valuable rig time during recovery work.
Performance for Harsh Well Conditions
YSJ Type Z Oil Jar supports 30 MPa sealing pressure and 150°C maximum working temperature. It suits petroleum drilling, oilfield fishing, coring, workover and well intervention jobs.
Higher Impact with Jar Intensifier
The ZSJ Type Jar Intensifier stores additional energy and releases it during the jarring action. When crews run both tools together, the assembly can deliver stronger shock in deep wells, heavy drilling strings and severe stuck pipe conditions.
Working Principle
The YSJ Type Z Oil Jar works through hydraulic pressure delay and sudden energy release.
When the crew pulls upward, the piston moves slowly through the cylinder. Hydraulic oil flows through a restricted passage, so pressure rises inside the tool. At the same time, the drill string stretches and stores elastic energy.
When the piston reaches the releasing bore, hydraulic oil flows out quickly. The pressure drops, the piston moves upward at high speed, and the drill string releases stored energy.
Then the jar pad strikes the bottom of the up jar cylinder. This impact travels through the drill string and acts on the stuck point. As a result, the tool helps free stuck pipe, fishing tools, coring tools and other downhole assemblies.
After one jarring cycle, the crew can reset the jar and continue the operation.
Oilfield Applications
YSJ Type Z Oil Jar fits many petroleum drilling and well service operations.
| Application | How It Helps |
|---|---|
| Oilfield fishing operation | Helps recover stuck fish, BHA parts, fishing tools and downhole assemblies |
| Stuck pipe recovery | Sends upward impact to drill pipe, drill collars and heavy drilling strings |
| Petroleum drilling | Helps crews respond when drilling tools become stuck in the wellbore |
| Coring operation | Helps release stuck coring tools and supports core recovery jobs |
| Workover operation | Assists with stuck tubing tools, service tools and workover strings |
| Well intervention | Supports downhole tool recovery in oil and gas well service jobs |
| Jar intensifier assembly | Works with ZSJ Type Jar Intensifier for higher impact output in difficult wells |
The tool also suits drilling string jarring, fishing string jarring, stuck BHA recovery, downhole fishing tool recovery and oilfield tool string recovery when crews need controlled upward impact instead of steady pulling force.
Specifications of YSJ Type Z Oil Jar
| Parameter / Model | YSJ95B | YSJ108B | YSJ114B | YSJ121B | YSJ159B | YSJ178B | YSJ203B | YSJ229B |
|---|---|---|---|---|---|---|---|---|
| O.D. (mm) | 95 | 108 | 114 | 121 | 159 | 178 | 203 | 229 |
| I.D. (mm) | 28 | 32 | 38 | 38 | 57 | 57 | 71 | 76 |
| Work Stroke (mm) | 245 | 254 | 289 | 290 | 380 | 380 | 380 | 380 |
| Max. Work Torque (kN·m) | 4 | 4.5 | 4.9 | 7.8 | 15 | 19.6 | 22 | 25 |
| Max. Upward Jarring Load (kN) | 160 | 180 | 200 | 300 | 600 | 650 | 800 | 900 |
| Sealing Pressure (MPa) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Max. Working Temperature (°C) | 150 | 150 | 150 | 150 | 150 | 150 | 150 | 150 |
| Connection | NC26 | NC31 | NC31 | NC38 | NC50 | NC50 | 6 5/8 REG | 7 5/8 REG |
| Length (mm) | 2450 | 2450 | 2660 | 3065 | 3340 | 3340 | 3500 | 3500 |
Send your required OD, connection type, wellbore size and operating depth to SGPE. Our team can help recommend a suitable hydraulic up jar for your well condition.
Model Selection Guide
The right hydraulic jar depends on wellbore size, drill string design, stuck point depth, pulling capacity, connection type, working temperature and required jarring load.
Small OD Models
YSJ95B, YSJ108B and YSJ114B suit smaller wellbores and light-duty fishing, drilling or coring jobs. These models offer compact dimensions and reliable up-jarring performance.
Medium OD Models
YSJ121B, YSJ159B and YSJ178B fit common oilfield drilling, workover and well service operations. They provide higher torque capacity and broader application coverage.
Large OD Models
YSJ203B and YSJ229B suit large wellbores, heavy drilling strings and demanding stuck pipe recovery jobs. These models deliver higher jarring load for challenging oil and gas well conditions.
For accurate selection, SGPE recommends confirming the well size, operating depth, drill string layout, stuck condition and connection requirement before ordering. Customers can also share the expected fishing operation, stuck pipe condition, BHA design or workover tool string layout for a more suitable recommendation.
Product Features for Oilfield Buyers
Efficient Energy Transfer
The hydraulic delay mechanism allows the drill string to build energy before release. This improves impact efficiency and helps transfer more force to the stuck point.
Continuous Up-Jarring Capability
The jar resets quickly after each impact. Crews can continue jarring until the stuck pipe or downhole tool starts to move.
Wide Model Range
SGPE offers OD sizes from 95 mm to 229 mm. Buyers can choose suitable models for drilling assemblies, fishing strings, coring strings and workover strings.
Stable Downhole Performance
The jar supports 30 MPa sealing pressure and 150°C working temperature, so it can handle many harsh downhole environments.
Common Oilfield Connections
Available connections include NC26, NC31, NC38, NC50, 6 5/8 REG and 7 5/8 REG. These options help customers match the jar with existing drilling tools, fishing tools, coring assemblies and workover tools.
Easy Rig-Site Handling
The simple hydraulic structure helps crews operate, reset and maintain the jar more easily. This supports faster handling and smoother field operation.
Recommended Tool Combination
For difficult stuck pipe recovery, SGPE recommends using the YSJ Type Z Oil Jar together with the ZSJ Type Jar Intensifier.
The ZSJ Type Jar Intensifier stores extra energy during the pulling process and releases it during the jarring action. As a result, the hydraulic jar can deliver a stronger impact to the stuck point and improve the chance of freeing stuck pipe, stuck drilling tools or other downhole assemblies.
This tool combination is especially suitable for deep oil and gas wells, heavy drilling strings, severe stuck pipe conditions and demanding oilfield fishing operations. It also works well in workover and well intervention jobs where the tool string needs higher impact energy to recover stuck downhole equipment.
Why Choose SGPE as Your Hydraulic Drilling Jar Supplier?
SGPE supplies oilfield drilling tools, fishing tools, cementing tools and downhole equipment for drilling contractors, oilfield service companies, workover teams and petroleum equipment distributors.
When customers choose the SGPE YSJ Type Z Oil Jar, they can select from multiple models for different oil and gas well sizes. The tool delivers reliable hydraulic up-jarring performance and uses a practical structure that supports easier rig-site operation. Its quick reset design also helps crews carry out repeated jarring during stuck pipe recovery operations.
SGPE provides common oilfield thread connections to help customers match the jar with drilling strings, fishing strings and coring assemblies. In addition, SGPE offers technical support for model selection, tool matching and connection confirmation according to the actual well condition, operating depth and drill string layout.
For project orders and bulk purchases, SGPE can also support export packing, international delivery and quotation service. Customers choose SGPE for its wide model range, common oilfield connections, technical selection support, export packing and quotation service. With SGPE, customers can get a suitable hydraulic drilling jar solution for oilfield fishing, coring, workover and stuck pipe recovery operations.
Ordering Information
To help SGPE recommend the correct hydraulic drilling jar, please provide the following information before ordering:
| Required Information | Details |
|---|---|
| Required model or OD | Such as YSJ159B, YSJ178B or required outside diameter |
| Top and bottom connection | Such as NC31, NC38, NC50, 6 5/8 REG or 7 5/8 REG |
| Wellbore size | Helps confirm suitable jar outside diameter |
| Operating depth | Helps evaluate downhole working condition |
| Drill string or fishing string configuration | Helps match jar size, load and connection |
| Stuck condition | Such as stuck drill pipe, stuck BHA, stuck fishing tool or stuck coring tool |
| Working temperature | Helps confirm temperature suitability |
| Required quantity | Helps prepare quotation and delivery plan |
| Special requirements | Such as connection confirmation or project-specific needs |
Contact SGPE to get the technical datasheet, model recommendation and quotation for YSJ Type Z Oil Jar.
Related Oilfield Tools
To build a complete fishing or stuck pipe recovery assembly, customers can also explore other SGPE oilfield tools that work well with the YSJ Type Z Oil Jar. For higher impact performance, the tool can be used together with the ZSJ Type Jar Intensifier. Customers who need different jarring solutions can also review SGPE Hydraulic Drilling Jar and Mechanical Drilling Jar options.
SGPE also supplies Oilfield Fishing Tools, Drill Collars, Drilling Stabilizers, Downhole Tools, Workover Tools and Cementing Tools for drilling, fishing, workover and well service operations. These products help customers build a more complete oilfield tool string according to well conditions, operating depth and recovery requirements.
For stronger internal SEO, the related product names in this section should link to their corresponding SGPE product pages or category pages.
Frequently Asked Questions about YSJ Type Z Oil Jar
1.What does the YSJ Type Z Oil Jar do in oil and gas well operations?
The YSJ Type Z Oil Jar helps drilling crews release stuck pipe, drilling tools, BHA components, fishing tools, coring tools and other downhole assemblies. Crews often use this hydraulic drilling jar in oilfield fishing, petroleum drilling, coring, workover and well intervention jobs when steady pulling force is not enough to move the stuck point.
2.How does the YSJ Type Z hydraulic drilling jar work?
The tool uses hydraulic oil to control release time. When the crew applies upward pull, the piston moves slowly inside the cylinder, and the drill string builds tension. Once the piston reaches the release bore, hydraulic oil flows out quickly. Then the jar releases stored energy and creates a sharp upward impact that travels through the drill string to the stuck point.
3.What are the main advantages of the YSJ Type Z Oil Jar?
The YSJ Type Z Oil Jar offers strong up-jarring performance, simple structure, quick reset and stable hydraulic operation. Its delay system helps the drill string build energy before impact. The tool also supports repeated jarring cycles, so crews can continue the operation without complex handling.
4.When should drilling crews use a hydraulic up jar?
Crews should use a hydraulic up jar when drill pipe, drill collars, BHA parts, fishing tools or coring tools become stuck in the wellbore. In many stuck pipe jobs, this tool works well when the operation needs controlled upward impact instead of steady pulling force.
5.What is the difference between a hydraulic drilling jar and a mechanical drilling jar?
A hydraulic drilling jar uses hydraulic time delay to build energy before release. This design gives crews smoother control and strong up-jarring action. A mechanical drilling jar usually relies on a latch or spring system. Many crews choose hydraulic jars for controlled release, reliable impact and repeated jarring during stuck pipe recovery.
6.Can the YSJ Type Z Oil Jar work with a jar intensifier?
Yes. SGPE recommends using the YSJ Type Z Oil Jar with the ZSJ Type Jar Intensifier when the well condition needs higher impact energy. For deep wells or heavy drilling strings, this combination can improve shock transmission and help crews handle severe stuck pipe conditions or difficult fishing jobs.
7.Which YSJ Type Z Oil Jar model should I choose?
The right model depends on wellbore size, drill string design, operating depth, connection type, stuck condition and required upward jarring load. Smaller models suit light-duty drilling, fishing or coring jobs. Medium and large OD models fit heavier strings, larger wellbores and more demanding recovery operations.
8.What information should I provide before requesting a quotation?
Before ordering, most buyers confirm the required model or outside diameter, top and bottom connection, wellbore size, operating depth, drill string or fishing string configuration, stuck condition, working temperature and order quantity. These details help SGPE recommend a suitable hydraulic drilling jar and prepare a more accurate quotation.
9.What connections are available for YSJ Type Z Oil Jar?
SGPE offers common oilfield connections for the YSJ Type Z Oil Jar, including NC26, NC31, NC38, NC50, 6 5/8 REG and 7 5/8 REG. These connections help customers match the jar with drilling strings, fishing strings, coring assemblies and workover tools.
10.What working conditions can the YSJ Type Z Oil Jar handle?
The YSJ Type Z Oil Jar supports 30 MPa sealing pressure and 150°C maximum working temperature. Operators can use it in drilling, fishing, coring, workover and well service jobs that need reliable upward impact and stable hydraulic performance in demanding downhole environments.
11.Can operators reset the YSJ Type Z Oil Jar for repeated jarring?
Yes. Operators can reset the jar after each upward impact and continue the next jarring cycle. This quick reset design helps crews save rig time and increases the chance of freeing stuck tools, especially when the stuck point needs several controlled impacts before movement occurs.
12.Why choose SGPE as a hydraulic drilling jar supplier?
SGPE supplies oilfield drilling tools, fishing tools, cementing tools and downhole equipment for drilling contractors, oilfield service companies, workover teams and petroleum equipment distributors. Customers choose SGPE for its wide model range, common oilfield connections, technical selection support, export packing and quotation service.
Final Call to Action
Are you looking for a reliable hydraulic drilling jar supplier for oilfield fishing, coring, workover or stuck pipe recovery?
Contact SGPE today to get detailed YSJ Type Z Oil Jar specifications, a complete hydraulic drilling jar technical datasheet, professional model selection support, connection and size confirmation, competitive factory quotation, export packing details and delivery information.
Send your well condition, required model, connection type and operating requirements to SGPE now.
Our team will help you choose the right hydraulic up jar for your oilfield operation and provide a suitable solution for your drilling, fishing, coring or stuck pipe recovery project.
E-Mail:
info@sgpe.com
