Wireline Engineering News
Launch of new Hi Deviation Roller Bogie® Jar - 07.06.10
For years Wireline Engineering’s Roller Bogie® conveyance tools have increased the envelope for running conventional wireline toolstrings at extreme deviations, even in near horizontal wells. However, limitations in existing wireline jar technology have inhibited effective mechanical jarring at higher deviations ... until now.
Wireline Engineering has designed and successfully field tested a completely new and unique approach to mechanical jar design – the new Hi Dev Roller Bogie® Jar.
Used in conjunction with Roller Bogie® conveyance tools, the Hi Dev Roller Bogie® Jar incorporates patented Roller Bogie® technology and virtually eliminates the principal barrier to efficient jarring ... friction. Not only is friction removed between the jarring toolstring and the tubing it is moving within but internal friction between the jar rod and housing is also greatly reduced by a combination of maintained axial alignment and internal rollers systems to guide and glide the opening and closing of the tool.
The result is radically better jarring performance in deviated wells. The greater the deviation, the greater the advantage over conventional mechanical jars ... better impact force, better operator control.
Available in a range of sizes, the Hi Dev Roller Bogie® Jar was put through rigorous pre-release testing at our Aberdeen test facility. In a series of performance tests in an enclosed fluid environment, a 3.000” tool double-sheared a 3/16” brass pin @ 80 degrees deviation after only two hits and with only 60kg of weight above the Jar.
More recently, during a job in the UKCS, a 3.600” Hi Dev Roller Bogie® Jar delivered excellent performance at deviation in remedial operations to manipulate a stuck sliding sleeve. Jarring operations were carried out at 15500ft with a deviation of 72 degrees. On the first run the Hi Dev Roller Bogie® Jar required only 5 hits to shear a 5/16” steel double shear pin (rated to 16,000lbs). On a second run, a 5/16” inconel double shear pin (rated to 30,000lbs) was sheared after only 15 hits.