Schlumberger
Oilfield Glossary
Oilfield Glossary
Language:
Search by Discipline
Terms beginning with:
# A B C D E F
G H I J K L M
N O P Q R S T
U V W X Y Z
Tools

mechanical jar

1. n. [Well Workover and Intervention]
A type of jar that incorporates a mechanical trip or firing mechanism that activates only when the necessary tension or compression has been applied to the running string. In slickline operations, the term is often used to describe any jar that does not contain a hydraulic trip mechanism, such as link and tubular jars that do not incorporate a firing mechanism.