New geothermal drillbit
This new Kaldera advanced roller cone bit is suited for geothermal and high-temperature drilling applications.
Seals are made from fabric reinforced fluoroelastomer composites providing thermal stability and wear resistance. The company notes that a grease compound was developed from synthetic base oils and functional additives to increase load capacity at elevated temperatures to help ensure adequate lubricity of the bearing sealing system.
Field trials of the bits demonstrated improvements in reliability over conventional roller cone drilbits, the firm reports. In a geothermal well in Italy, where temperatures can exceed 277o C., bits with the new sealing system were successfully run. A field high was recorded, drilling 77 hr in a single run, marking a 37% increase of on-bottom drilling hours when compared with offset runs. At the end of the run, all seals and bearings were graded as still effective, the firm notes.
Source: Smith Bits, 5599 San Felipe, 17th Floor, Houston, TX 77056.
New bit offers accuracy, helps shorten run time
The new Talon 3D high-efficiency vector-accurate polycrystalline diamond compact drillbit promises to help shorten the time it takes to drill a well.
It offers users directional control necessary to drill curve and lateral sections in a single run.
The ability of the bit to provide a high rate of penetration enables operators to improve performance in difficult-to-drill formations. The bit is designed to handle wear and tear of drilling environments through the use of an efficient bit profile, application-specific cutting structures, and superior hard-facing material. Proprietary polished cutters also help reduce balling to eliminate buildup on the cutting face and aid the evacuation of cuttings to improve overall drilling efficiency.
Large-volume junk slots provide hydraulic efficiency in low horsepower per square inch situations, while patented torque management technology and a shorter bit length help operators drill directional wells quickly and accurately. These features work together to help provide enhanced directional control, cut through tough formations, and the ability to efficiently hit the pay zone, the company points out.
Source: Baker Hughes Inc., 2929 Allen Parkway, Suite 2100, Houston, TX 77019.
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