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Dual Fuel For Drilling - apache’s experience

Dual Fuel For Drilling - apache’s experience. Work done by: Sam Goswick Presented by: George King 05/15/2014. Alternate Fuels and E fficiency P rograms: D-F Hythane. Pressure reducer, from ~50psi on line to ~5psi into engine. To gas manifold line

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Dual Fuel For Drilling - apache’s experience

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  1. Dual Fuel For Drilling - apache’s experience Work done by: Sam Goswick Presented by: George King 05/15/2014

  2. Alternate Fuels and Efficiency Programs: D-F Hythane • Pressure reducer, from ~50psi on line to ~5psi into engine. • To gas manifold line • programmable controller, monitors temp/vibration/gen load, adjusts sub rate • E-stop, optional wired into Methane/fire detectors • From kit into intake manifold of diesel engine • CNG manifold in motor house • One kit per generator set

  3. Alternate Fuels and Efficiency Programs: LNG kits • Ambient vaporizer (LNG boils at -260 degrees) • LNG 2TK tri-hull transport trailer • Pressure and choke lines • Buried electrical and gas lines to rig

  4. Alternate Fuels and Efficiency Programs: Dedicated NG • Catalytic Converter for methane escape • Artificial load bank • CAT G3516 generator set • Use with field gas/LNG/CNG (currently on LNG)

  5. Alternate Fuels and Efficiency Programs: CNG kit • Rig unloader • Rig CNG supply trailer • Virtual pipeline refueling trailer

  6. Alternate Fuels and Efficiency Programs: Frac LNG • Electric Vaporizor • “Queen” unit LNG Vaporizer/Transporation trailer • Caterpillar Dynamic Gas Blend (DGB) dual-fuel kits on 12 Q-10, 2000HP Pump trucks

  7. Alternate Fuels and Efficiency Programs: Frac CNG • CNG Virtual pipeline trailer • Frac CNG unloader • Wheeler high-rate CNG station (~4miles north of Wheeler, TX)

  8. conclusion • Adopting natural gas is manageable - requires learning • Dual fuel is flexible, but dedicated natural gas engines yield higher savings • Field gas is preferred where available, but consistency and supply stability trump gas cost savings. • For dedicated natural gas engines, turbines have tested well, but spark ignited engines are plug & play. Load banks will be required in many cases. • Strong conversion economics are needed to justify transition challenges

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