Solution
Repeat Precision proposed using the PurpleSeal™ frac plug, which has proprietary high-strength composite materials that ensure uniform performance and durability. Interlocking castellations on the slips and end caps and a contoured slip-to-cone interface eliminate component rotation to ensure even, concentric slip expansion.
The drill-out consisted of using a Deep Well snubbing unit to apply the force required to get the pipe to reach the end of the long lateral section, as well as a new WOS 7 bpm downhole motor and a Varel 4.5” SlipXtreme hybrid roller cone bit. The entire drill-out was completed in a single trip lasting approximately 5.5 days. No short trips or motor stalls were reported, and the plug debris size was manageable from the first plug to the last.
After the job was completed, the bit only showed normal wear on the inserts. This project proved to be a tremendous success, as multiple runs are normally expected with a standard plug-and-bit combination.
Number of plugs: 109 PurpleSeal™ frac plugs
Total drill-out time:Less than 88 hours
PurpleSeal™ plug drill-out time: 6.5 minutes average
PurpleSeal™ plug wash time: 27 minute average
Lateral length: 21,483 ft
Casing: 5-1/2-in., 20 lb/ft
Drill Bit: Varel SlipXtreme
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