Author Archives: Jack Sullivan

Through supplying both rented Redback Roller Reamers and experts in drilling operations to this project, it was found by comparing drilling holes, with and without the aid of our roller reamers, that significant amounts of money were being saved by the use of our drilling tools. 

Originally the company conventionally drilled the 12 ¼” hole Section with three Stabilizers in the assembly which resulted in high torque and caused string stuck, Top Drive damage and bending of the drill pipe and lost time equivalent to $ 60,000.

After consulting Redback Engineering Staff, decision was taken to replace the three fixed blade Stabilizers with Three Redback Roller Reamers. Using Redback Roller Reamers resulted significant decrease in the drilling torque & drag, the 12 ¼” hole section was drilled with the highest Rate of Penetration (ROP) compared to the offset wells and more than $ 65,000 as a direct saving in the 12.1/4” section. Moreover, the indirect saving in Casing & Logging running times.

Upon comparing the original hole to the sidetrack hole, Redback directly saved more than $ 530,000 by drilling the original hole with low torque, drag and faster ROP and saved 265 drilling Hrs.

The Redback Roller Reamer is ideally suited to improve Bit & BHA performance.  It’s ability to reduce torque, drag and vibration contributes to lengthening the drilling time and increasing reliability of the more expensive drilling components.

Many runs, over a period of 500 hours, 9,000 ft of rough drilling were drilled with the Redback in tow.  The effect on the consumable component of the tool, the cutter, was severe yet the tool held together and the drilling assembly withdrawn intact. 

To see how we can optimise your drilling operations, contact us today.

 

 

 

 

Using the MWD Tool, the levels of stick-slip and shocks were measured with and without the aid of the Redback Roller Reamer to compare and contrast the vibration logs between the two runs.  

Drilling through the Hardegsen, Detfurth and Volpriehausen formations, the results were found to be much more favourable in the run where it was aided by the Redback Roller Reamer.  

The vibration levels recorded during the section were the lowest experienced in the four well drilling campaign. 

The low levels of vibration show the significant improvement in the drilling dynamics by replacing the fixed blade stabilizers in the assembly with the Roller Reamers 

For more information on how Redback Drilling Tools can optimise your operations contact us today 

 

 

The operations were measured with and without use of the Redback Roller Reamer using Baker Hughes’ vibration logging tool across multiple wells in the offshore facility.  

These measurements found that when the wells were compared the levels of stick/slip, torsional vibration and backward rotation in the wells without the roller reamer were significantly higher than the ones with it in application.  

As can be seen in the chart above, well SA-F was drilled without the aid of a Redback Roller Reamer and the other five wells were drilled with it. The percentage of circulation was below 15,000 for all the wells drilled with the Roller Reamer in all four measurements (backwards rotation, stick slip Level 6, stick slip level 5 and torsional oscillation). Alternately, the well without this in operation measured the backwards rotation and stick slip level 6 in excess of 25,000.  

The contrasting of these measurements shows that the use of a Redback Roller Reamer greatly decreases these factors when drilling in conditions with high levels of stick/slip and torsional vibration.  

For more information on how Redback can benefit your operations contact us now.