Jarring Operations & Procedure In Oil & Gas
Jars are approximately thirty feet long. Heavy-duty lift subs for tapered shoulder elevators are typically used for handling.

Jar Safety Clamp

When handling the Drilling Jar above the rotary table, the safety clamp must be on the Jar. This keeps the Jar in a safe, extended position while being handled. The safety clamp is removed when the Jar is lowered into the hole; see the Figure below

Picking Up The Jar

Step 1:

Place the lower drill assembly in the slips.
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