Is the Risk of Unproductive Rig Time and
Expensive Fishing Jobs
present in your logging operations?

Then consider including
LockJar^® Wireline Technology
in your next logging string.

Getting stuck during a logging operation can add significant cost to a well. The new wireline jar has proven to be remarkably effective in freeing stuck wireline tools and preventing costly fishing operations. Freeing the tools also provides the opportunity to complete the required data acquisition as the instruments have historically not been damaged by jarring. In addition, the use of the wireline jarring method allows operators to run relatively inexpensive free-fall wireline tools in areas that previously due to sticking problems have gone straight to drill-pipe-conveyed operations or logging while drilling (LWD) methods.

A multi-conductor jar, called the LockJar, has been in use for more than four years. The jarring system utilizes a proprietary design LockJar and Enhancer, both of which remain passive until such time as they are needed. The LockJar can be pulled, without triggering, as hard as desired for durations shorter than the tool's time delay. Slacking off the string resets the LockJar so that it can be pulled again. Experience with this new technology has also led to discovery of valuable best practices for handling stuck tools, which has increased the number of freed tool strings. Among these best practices is the use of properly placed standoffs, particularly in inclined sections of wellbores.

The system is rated for use in wellbore environments up to 400 degrees Fahrenheit and 30,000 psi making it functional in most deepwater and hostile applications.

( . . . System Benefits)