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What is the difference between a drilling jar, a fishing jar and a coring jar?

April 26, 2017coring difference Drilling fishing jar

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What is the difference between a drilling jar, a fishing jar and a coring jar?

1 Answer

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10 Posted

A22: A drilling jar has an oil lubricated spline and it is an integral part of the drill string. They are designed for long-term use, high torque and as well rotary drilling\mud motor applications. They also have locks so that they can be run anywhere in the drilling assembly and they also feature large bores so directional tools can pass through them.