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Help Center4330V G Series Double-acting Hydraulic Drilling Jar QY121、QY127、QY165、QY168、QY178、QY203
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The G series downhole jar is a double-acting hydraulic downhole jar. When the bottom-hole drilling tool is stuck, it can provide additional impact force. It can be designed as a component of the drill string. The main working parameters are as follows:
The jarring force can be adjusted downhole, with a high number of jarring times. The number of jarring times during normal operation is more than 500 times.
It can adapt to high working temperatures, with a temperature up to 200°C. It is resistant to high pressure, with a dynamic pressure difference of 110Mpa and a static pressure difference of 140Mpa.
It can adapt to various mud environments, including oil-based mud (with an oil content of 90%) and is resistant to sulfur.
The pressure drop is low, less than or equal to 0.3Mpa.
The length and diameter of the G series tools are similar to those of drill collars and have compatible connections, so they can be easily placed as part of the BHA. In the conventional drilling mode, the jarring mechanism will not misfire and is not affected by normal drilling conditions or torque.
Product advantages:
Widely used in oil and gas well operations: Drilling, testing, coring, offshore operations, fishing, cementing, remedial measures, offshore services, workover, directional and horizontal drilling
Easily adjustable jarring parameters of downhole tools on the surface: Adjustable characteristics, selective upward or downward jarring, variable jarring time and cycle
Structure for enhanced fishing operations: Fully hydraulic, variable impact, backup sealing system, direct push type
High-strength structure: High-strength 4330V tough material. Key components are specially processed to extend the fatigue life.
It can withstand high-temperature and high-pressure environments, with improved seals.
The improved bearing surface finish can provide better protection for the mandrel.
The improved drive system can relieve torque and impact damage.
New FEA fatigue analysis improvement.
Directional drilling: An excellent tool for use in conjunction with downhole motors in directional/horizontal drilling. Its direct push and pull characteristics will not affect the orientation of the drill string.
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