Simple, effective device for freeing a stuck tool string during openhole logging
Halliburton's LockJar® Multi-Conductor E-Line Jar and Enhancer provide a simple way to help avoid time-consuming and expensive stuck strings and fishing jobs in wireline logging operations. Available in 3.5-in. and 2.75-in. OD, the LockJar hydraulic jar can be activated multiple times in multiple intervals to free a stuck tool string and preserve a logging run without costly delays.
Rated as high as 500°F (260°C) and 30,000 psi (207 MPa), the versatile LockJar hydraulic jar uses hydraulic time delay that overcomes the limitations of mechanical tools to maximize available force through surface pull.
LockJar® Mono-Conductor E-Line Jar
Halliburton's LockJar® Mono-Conductor E-Line Jar provides a simple way to protect against time-consuming and expensive stuck strings and fishing jobs in cased-hole logging and perforating operations.
Available in 1.6875-in. OD and 2.75-in. OD sizes, the mono-conductor LockJar has proven to be extremely effective for releasing stuck perforating guns and bridge plugs and can be activated multiple times in multiple intervals to free a stuck tool string and preserve a logging run without costly delays.
Rated up to 500°F and 30,000 psi, the versatile LockJar® hydraulic jar is hydraulically actuated and equipped with a mechanical lock that can be manually adjusted during shop assembly to trigger at a desired over pull. This provides a simple, yet very effective, means of freeing a stuck tool string and significantly reduces risk when perforating a well or recovering pipe.