Improves ROP in WBM, especially when using PDC bits.
The Spear bit features a bullet shape and smaller-diameter steel body—proven to reduce bit balling and cuttings packing around matrix-body bit blades—and set the benchmark for drilling curve and lateral sections in unconventional shale plays: 10,000 runs since 2011.
Building on this performance, we used the IDEAS integrated dynamic design and analysis platform to engineer the next-generation Spear shale-optimized steel-body PDC drill bit, which delivers improved ROP while maintaining precise directional control.
This significant increase in drilling performance is the result of several key design enhancements:
Unconventional shale applications often produce a poor hydraulic environment: high mud weights, low flow rates, and with a bit hydraulic horsepower (HSI) of less than 0.5. In such conditions, bit nozzle placement is crucial.
An extensive computational fluid dynamics (CFD) analysis was conducted to ensure nozzle placement on the next-generation Spear bit resulted in an improved hydraulic configuration: Cutters are more effectively cleaned and cooled, helping to prolong cutter life and maximize ROP. The Spear bit can be fitted with optional Enduro 360 PDC cutters. This new range of premium cutters has greater thermal stability, impact resistance, and durability.
When compared with the first-generation PDCs, the next-generation Spear bits have improved ROP in curve and lateral sections 40% while providing excellent directional control for accurate wellbore placement.
Push-the-bit RSS drills additional 840 ft in 24-h period, saving a total of 1.3 days.
PDC bit on high build rate RSS drills curve and lateral section in one run, Vaca Muerta formation.
Apache Corp recently commenced horizontal drilling activity to develop shale gas reserves in Neuquen basin, Argentina. On one well, the curve was drilled with a 12 1/4-in PDC bit on PDM. The lateral was drilled with an 8 1/2-in PDC on a point-the-bit RSS
PowerDrive Archer RSS run with electromagnetic telemetry system achieves 128 ft/h only 1 ft to the right and above plan.
Integrated drilling services execute lateral in one run, increase average ROP 61.7%.