QY Hydraulic Drilling Jar

Hydraulic drilling jars are expertly crafted with two pistons separated by a valve, creating a dynamic system that responds to applied tension or compression. As force is exerted on the armed hydraulic jar, fluid in one piston is compressed, flowing to the other piston against robust flow resistance. This sophisticated mechanism controls the arming time, with increased pulling or pushing forces resulting in a quicker armament. The precision-engineered stroke measures the distance of movement, and upon reaching a critical position, compressed fluid rapidly releases through a bypass valve. This refined action propels fluid toward the second piston, instantly balancing the pressure and generating a formidable jarring force-the greater the force applied, the more compressed the fluid, and the stronger the impact.

In the event of the Drill String becoming stuck on the bottom while drilling, or encountering twist-offs, the jar delivers a powerful upward release motion. Should the pipe find itself stuck off-bottom within key seats or due to other factors, a downward jarring motion achieves the necessary release. This innovative approach allows for effective use of upward reaming methods to recover the entire drill string seamlessly.

When dealing with differential sticking, regaining rotation and circulation by mobilizing the stuck pipe becomes imperative. In such situations, jars adeptly move up and down uninhibited, without disturbing the drillstring's directional orientation. This makes them invaluable as neutral tools in downhole motor directional drilling and directional jetting, ensuring precision and efficiency.

Jars provide unmatched versatility across multiple operations, excelling in fishing and cutting jobs, drilling, and production tools, as well as cementing and coring operations. This makes them indispensable for a wide range of demanding downhole tasks.

The Full Hydraulic Drilling Jar Type QY boasts a cutting-edge needle valve type structure, offering hydraulic impact in both upward and downward motions with seamless tonnage adjustments. This advanced design not only enhances drill string protection but also extends service life. Featuring a patented hydraulic energy storage mechanism, it promises remarkable stability. With a delay time range of 30s to 240s and a working temperature range of -40ºC to 180ºC, it adopts new special materials to deliver superior performance and safety. Its applications span drilling, coring, workovers, fishing, and beyond.

QY type Hydraulic Drilling Jar

Application

It is suitable for all conventional wells, inclined wells and large displacement wells at all temperatures not higher than 160℃ .

Features

The superior machine structure is to further improve the machine maintainability.

The better sealing materials are selected to improve the reliability of sealing

The core mechanism adopts the seal oil bath design to reduce the wear and tear of the moving parts and improve the life of the whole machine.

The overflow area of the release channel is increased to reduce the running resistance and greatly improve the shock effect.

The operating force of hydraulic releasing mechanism can be controlled on the ground by driller, and can be flexibly adjusted according to the downhole situation.

The optional mechanical locking module is added to meet the needs of some special users. Increase the fast recovery function of the upward and downward strokes.

The mandrel moves back to the middle position, and then the jar will do jarring again in either of the two directions.

QY type Hightemperature Hydraulic Drilling Jar

Application

It is suitable for all conventional wells, inclined wells and large displacement wells at all temperatures not higher than 204℃.

Features

The superior machine structure is to further improve the machine maintainability. The unique sealing structure is designed to improve the temperature resistance and improve the sealing reliability. The core mechanism adopts the seal oil bath design to reduce the wear and tear of the moving parts and improve the life of the whole machine.

The overflow area of the release channel is increased to reduce the running resistance and greatly improve the shock effect.

The operating force of hydraulic releasing mechanism can be controlled on the ground by driller, and can be flexibly adjusted according to the downhole situation.

The optional mechanical locking module is added to meet the needs of some special users.

The optional mechanical locking module is added to meet the needs of some special users.

Increase the fast recovery function of the upward and downward strokes. The mandrel moves back to the middle position, and then the jar will do jarring again in either of the two directions.

QYSZ III Double Acting Hydraulic Drilling Jar

1.The mechanical locking mechanism prevents unnecessary wear of the internal parts during the working process, and improves the working life.

2.The mechanical locking mechanism is functional safety and reliability, which is made by special process. The friction resistance is small, and the locking force is linear stability.

3.The locking mechanism can avoid the failure jarring caused by misoperation when connect simple root to the drill string or contact the hole bottom.