Description

QYSZ Double Acting Hydraulic Drilling Jar

Hydraulic Drilling Jar for Stuck Pipe Recovery, BHA Release and Oilfield Downhole Operations

SGPE designs the QYSZ Double Acting Hydraulic Drilling Jar for oil and gas drilling operations that require controlled impact force to release stuck downhole tools. In petroleum wells, the drill string, bottom hole assembly, drill collars, stabilizers or fishing tools may become stuck because of differential sticking, key seating, tight hole sections, cuttings build-up, borehole instability or difficult formation pressure.

When sticking occurs, the crew needs a dependable downhole impact tool that can respond quickly. The QYSZ jar delivers both upward and downward jarring force, so operators can work from two directions and improve the chance of releasing the stuck assembly.

The tool uses a one-piece double-acting hydraulic structure. This design helps the jar handle repeated impact, high tensile load and heavy drilling assemblies. It also keeps field operation simple. The operator can adjust the jarring force and direction from the surface without torque adjustment.

SGPE offers QYSZ hydraulic drilling jars from 121 mm to 241 mm O.D. Available API connections include NC38, NC46, NC50, 6 5/8 REG and 7 5/8 REG. This model range helps drilling contractors, petroleum operators and oilfield service companies match the jar with different drill strings, BHAs and well conditions.

---

Quick Product Overview

---

Key Features of SGPE QYSZ Hydraulic Drilling Jar

Double-Acting Jarring for Better Downhole Control

The QYSZ jar creates impact in both upward and downward directions. This gives the crew more control when the stuck point responds differently to pull force and set-down force. In many recovery jobs, this flexibility helps operators choose the right impact direction according to actual downhole feedback.

Controlled Hydraulic Impact for Stuck Tool Recovery

The jar stores hydraulic energy during operation and releases it as a sharp impact. This impact helps loosen stuck drill strings, trapped BHAs, drill collars, stabilizers, fishing tools and other downhole components. For crews working in tight holes, unstable formations or difficult wellbores, the QYSZ jar offers a practical stuck pipe recovery solution.

Surface Adjustment Without Torque Setting

The operator can adjust jarring force and direction from the surface. The tool does not require torque adjustment during operation, which reduces handling steps on the rig floor. This feature helps save time when stuck pipe recovery or fishing work requires a fast response.

One-Piece Structure for Heavy Oilfield Service

SGPE uses a one-piece body to improve strength and operating stability. The structure helps the jar withstand high tensile load, repeated jarring impact and heavy drill string loads in petroleum wells. This makes it suitable for deep wells, directional wells, complex wellbores and high-load drilling programs.

Multiple Sizes and API Connection Options

SGPE supplies several QYSZ models for common oilfield drill string configurations. Available API connections include NC38, NC46, NC50, 6 5/8 REG and 7 5/8 REG. These options help drilling engineers select a jar that fits the BHA design, well size and expected load.

---

Need Help Selecting the Right Jar?

Choosing the correct hydraulic drilling jar depends on well size, API connection, drill string design, operating load, torque requirement and required jarring force. Send your well conditions and technical requirements to SGPE. Our team will help you compare QYSZ models and recommend a suitable option for drilling, fishing or stuck pipe recovery.

---

Oilfield Applications

The SGPE QYSZ Double Acting Hydraulic Drilling Jar fits petroleum drilling and downhole service environments where operators need controlled impact force to release stuck tools and recover drilling assemblies. It works in oil and gas well drilling operations, especially when crews face stuck pipe, stuck drill strings, trapped BHAs or tight wellbore sections.

In petroleum wells, operators use the QYSZ jar for stuck pipe recovery, drill string release, BHA recovery and bottom hole assembly impact release. The tool also supports downhole fishing, coring in exploration and development wells, and cementing-related tool release. Because it works in both directions, the crew can loosen stuck tools more effectively and improve recovery efficiency.

The QYSZ double acting hydraulic jar also suits directional wells, deep wells, complex wellbores and high-load drilling conditions. For drilling contractors, oilfield service companies and petroleum operators, it provides a practical jar solution for drilling, fishing, coring, cementing and oilfield tool recovery.

---

Working Principle of QYSZ Double Acting Hydraulic Drilling Jar

Upward Jarring

When the operator lifts the drill string, the drill stem applies upward force to the jar. The upper hydraulic mechanism moves and builds pressure in the working fluid.

After the jar reaches the preset stroke, the hydraulic system releases pressure quickly. This action creates a strong upward impact. The impact acts on the stuck drill string, drill collar or BHA and helps free the downhole tools from the sticking point.

Downward Jarring

When the operator applies downward force, the lower hydraulic mechanism builds pressure in the working fluid. Once the jar reaches the preset stroke, the pressure releases and creates a downward impact.

This downward jarring action helps loosen stuck drilling tools, fishing tools and other downhole components. Together, the upward and downward functions give operators more recovery options during stuck pipe recovery and oilfield fishing operations.

---

Why Choose SGPE as Your Hydraulic Drilling Jar Manufacturer?

SGPE supplies oilfield drilling tools for petroleum drilling and downhole service operations. As a hydraulic drilling jar manufacturer and oilfield drilling jar supplier, SGPE focuses on practical field use, model selection support and dependable tool performance.

The QYSZ jar helps drilling contractors and oilfield service teams reduce downtime when stuck pipe problems occur. Its double-acting function, surface-adjustable operation and wide model range make it a strong choice for oil and gas wells, BHA recovery, fishing work and deep well drilling.

SGPE can also support model selection. Share your well size, API connection, expected overpull, torque requirement and jarring force requirement. Our team will help you select a suitable QYSZ hydraulic drilling jar for your project.

---

Specifications of QYSZ Double Acting Hydraulic Drilling Jar

SGPE offers QYSZ hydraulic drilling jars from 121 mm to 241 mm O.D. The table below helps drilling engineers and procurement teams compare each model by size, connection, stroke, jarring force, tensile load and torque capacity.

---

Available QYSZ Hydraulic Drilling Jar Models

QYSZ121B Hydraulic Drilling Jar

The QYSZ121B model fits smaller oilfield wellbore applications. It uses an NC38 API connection and gives drilling crews a compact option for petroleum drilling jobs that require a smaller jar.

QYSZ159C, QYSZ165B and QYSZ172C Hydraulic Drilling Jars

These models cover many common oil and gas well drilling programs. They use NC46 or NC50 API connections and deliver up to 700 kN upward jarring force and 350 kN downward jarring force. Operators often choose them for drilling, fishing and BHA release work.

QYSZ178B Hydraulic Drilling Jar

The QYSZ178B model offers higher impact capacity for more demanding well conditions. It provides up to 800 kN upward jarring force and 400 kN downward jarring force, which makes it a strong option for stuck pipe recovery and downhole tool release.

QYSZ203B Heavy-Duty Hydraulic Drilling Jar

The QYSZ203B model supports heavy-duty petroleum drilling and fishing operations. With a 6 5/8 REG connection, 1000 kN maximum upward jarring force and 6650 kN maximum tensile load, it fits high-load oilfield service conditions.

QYSZ241 Heavy-Duty Hydraulic Drilling Jar

The QYSZ241 model supports large drill string assemblies and severe drilling conditions. It provides up to 1250 kN upward jarring force, 650 kN downward jarring force and 7350 kN maximum tensile load.

---

Use in Oilfield Bottom Hole Assemblies

The QYSZ Double Acting Hydraulic Drilling Jar usually works as part of the bottom hole assembly. Drilling engineers select the right model by checking wellbore size, drill string configuration, API connection, expected overpull, torque load, jarring force requirement and sticking risk.

Many drilling programs include a hydraulic jar in the BHA before sticking occurs. If the drill string becomes stuck, the jar delivers controlled impact force to the stuck point and helps the crew recover the downhole assembly. Proper model selection improves jarring efficiency, protects the drill string and reduces downtime during oil and gas well operations.

---

How to Select the Right Hydraulic Drilling Jar

To choose the right QYSZ hydraulic drilling jar, the operator should first check the wellbore size, drill string design and API connection type. These factors help confirm whether the jar can match the planned BHA and operate safely in the well.

The crew should then review the expected tensile load, working pull force, upward jarring force, downward jarring force and torque load. These parameters directly affect jar performance during stuck pipe recovery, fishing operations and BHA release.

Well depth and well trajectory also matter. Deep wells, directional wells, complex wellbores and high-load drilling conditions often require a jar with higher load capacity and stronger impact force. The operator should also consider the main job type, such as drilling, fishing, coring, cementing-related tool release or oilfield tool recovery.

SGPE can help you compare the available QYSZ models. Share your well conditions, API connection, expected load, torque requirement and application details. Our team will recommend a suitable hydraulic drilling jar for your oilfield drilling project.

---

Benefits for Oilfield Operators and Drilling Contractors

The SGPE QYSZ Double Acting Hydraulic Drilling Jar gives crews a direct response tool when downhole sticking occurs. Instead of relying only on overpull, the crew can use controlled hydraulic impact to work on the stuck point.

This helps drilling teams respond faster, improve BHA recovery efficiency and reduce the impact of unplanned downtime. The surface-adjustable jarring function also gives the operator better control during upward and downward jarring operations.

For drilling contractors and oilfield service companies, the QYSZ jar supports daily drilling, fishing, coring, cementing-related tool release and downhole recovery work. Its wide model range also helps teams match the jar with different petroleum drilling projects and well conditions.

---

FAQ About QYSZ Double Acting Hydraulic Drilling Jar

1. What is a QYSZ Double Acting Hydraulic Drilling Jar?

The QYSZ Double Acting Hydraulic Drilling Jar is a downhole impact tool for oil and gas well drilling. It helps crews release stuck pipe, stuck drill strings, trapped BHAs and other downhole tools.

The jar can work upward and downward, so operators get more recovery options than a single-direction jar can provide.

2. What does double acting mean in a hydraulic drilling jar?

Double acting means the jar can create impact force in two directions. It can jar upward when the operator pulls the drill string and jar downward when the operator applies weight.

This function helps crews handle different sticking conditions in oil and gas wellbores.

3. How does the QYSZ hydraulic drilling jar help release stuck pipe?

The jar builds hydraulic pressure during operation. When it reaches the preset stroke, it releases the pressure quickly and creates impact force.

This impact acts on the stuck point and helps loosen the drill string, drill collars, stabilizers, BHA or fishing tools.

4. Where can operators use the QYSZ hydraulic drilling jar?

Operators use the QYSZ jar in oil and gas drilling, stuck pipe recovery, downhole fishing, coring, cementing-related tool release and BHA recovery.

It also fits directional wells, deep wells, tight hole sections, complex wellbores and high-load drilling conditions.

5. Can the operator adjust the jarring force from the surface?

Yes. The operator can adjust the jarring force and direction from the surface. This helps the crew react faster when downhole conditions change.

Surface adjustment also reduces handling steps on the rig floor.

6. Does the QYSZ drilling jar need torque adjustment?

No. The QYSZ jar does not need torque adjustment during operation. The operator can control the jarring action without changing torque settings.

This feature helps simplify field operation during urgent stuck pipe recovery work.

7. What sizes and API connections are available?

SGPE offers QYSZ hydraulic drilling jars in 121 mm, 159 mm, 165 mm, 172 mm, 178 mm, 203 mm and 241 mm O.D. sizes.

Available API connections include NC38, NC46, NC50, 6 5/8 REG and 7 5/8 REG.

8. What are the maximum jarring force and load ratings?

The maximum upward jarring force ranges from 350 kN to 1250 kN. The maximum downward jarring force ranges from 200 kN to 650 kN.

The maximum tensile load ranges from 1500 kN to 7350 kN, depending on the selected model.

9. How should I choose the right QYSZ hydraulic drilling jar model?

You should check well size, drill string structure, API connection, expected overpull, tensile load, working torque and required jarring force.

For deep wells, directional wells or high-load jobs, SGPE can help you compare models and choose the right jar.

10. Can the QYSZ hydraulic drilling jar work in deep wells and directional wells?

Yes. The QYSZ jar can support deep well drilling, directional well drilling and complex petroleum well operations when the selected model matches the drilling program.

These wells often create higher sticking risk because of friction, tight spots, cuttings build-up and difficult formations.

11. Why should drilling contractors use a hydraulic jar in the BHA?

A hydraulic jar gives the crew a direct recovery tool when sticking occurs. It helps the crew apply controlled impact force to the stuck point instead of relying only on overpull.

This can improve BHA recovery efficiency and help reduce non-productive time.

12. Why choose SGPE as your hydraulic drilling jar supplier?

SGPE supplies QYSZ Double Acting Hydraulic Drilling Jars for drilling, fishing, coring, cementing and stuck pipe recovery applications.

You can send your O.D., I.D., API connection, well depth, tensile load, torque requirement and jarring force requirement. SGPE will help you select a suitable model and provide a fast quotation.

---

Request a Quote from SGPE

Need a QYSZ Double Acting Hydraulic Drilling Jar for your oilfield drilling project?

Send your technical requirements to SGPE today. Our team can help you select the right hydraulic drilling jar according to your well size, API connection, drill string design, operating load and downhole application. Whether you need the tool for drilling, fishing, coring, cementing-related tool release or stuck pipe recovery, we can recommend a suitable model based on your actual well conditions.

To receive a faster and more accurate quotation, please share your required O.D. and I.D., API connection, well depth, well type, expected tensile load, working torque requirement and required upward and downward jarring force. You can also tell us the application details and order quantity, so our team can better understand your project needs and provide a practical solution.

Contact SGPE now to get technical support, model selection assistance and a fast quotation for the QYSZ Double Acting Hydraulic Drilling Jar.

E-Mail:
info@sgpe.com