Solution
We used the PurpleSeal™ all-composite frac plug, which is rated up to 10,000 PSI and has proprietary high-strength composite materials to ensure uniform performance and durability. Interlocking castellations on the slips and end caps and a contoured slip-to-cone interface eliminates component rotation to ensure even, concentric slip expansion. With minimal metallic content (approximately 1%), PurpleSeal™ frac plugs consistently drill out in 8 minutes or less.
Immediately after the fracturing operation was successfully completed, the operator drilled out more than 100 composite frac plugs in a single trip in less than 88 hours. No motor stalls were reported, and plug debris size was ideal and consistent from the first plug to the last.
After the job, the bit showed normal wear on the inserts. PurpleSeal™ frac plugs delivered similar drill-out performance in four additional wells on the same pad. The same drilling BHA and procedure were used for all the wells.
Number of plugs
98 PurpleSeal™ 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
10,270 ft
Casing
5-1/2-in., 20 lb/ft
Work string
Threaded pipe with a 3-1/8-in. downhole motor
Drill bit
Taurex 4-5/8-in. JZ Bore Haug™ tri-cone bit
