Enel Green Power, had drilled a 17.5-in section of a geothermal well at low ROP, requiring two bit runs—an approach that was inefficient and costly. To improve operational efficiency and cost-effectiveness, the operator sought new technology capable of drilling the entire section in a single run at a higher penetration rate.
By leveraging the Spyder bit, Enel Green Power was able to drill the entire section in a single run, eliminating the need for a second bit run, saving costs and rig time. This new technology delivered a 91% increase in ROP, achieving an average of 4.21 m/h compared to 2.2 m/h (average ROP for a well at the same location). The Spyder bit redefines drilling performance by combining a fixed cutter cutting structure with a roller cone cutting structure. The fixed cutter component improves penetration rates by cutting more efficiently, while the roller cone cutting structure lowers reactive torque, enabling better toolface control when used with a steerable motor BHA. The success of this operation sets a new benchmark for efficiency in geothermal drilling.
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