Schlumberger
Oilfield Glossary
Oilfield Glossary
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Tools

tubular jar

1. n. [Well Workover and Intervention]
A downhole tool used on slickline operations. The tubular jar is a relatively simple mechanical jar that is extended or collapsed by manipulation of the slickline at surface. The impact force delivered by the jar depends on the weight of the tool string above the jar, the density of the wellbore fluid and the stroke length of the jar.