Submitted by Dan Kelly, AFRED Director.
At Commissioner Porter’s E&P Workshop in Midland, Mark Bruchman, General Manager for Operations with Apache Corporation, described his company’s experience with natural gas engines on drilling rigs and frac spreads. Apache has run 4-5 rigs, both dual-fuel and dedicated, on LNG, CNG, pipeline gas and field gas and two dual-fuel frac pump engines on LNG and CNG.
Results have been generally favorable. Equipment and fuel deliveries were reliable and safe, with 18-25 percent reduction in fuel costs and substitution rates of 50-65 percent in dual-fuel engines. Maximum substitution rates were achieved in transient conditions without loss of power or response.
Bruchman said fuel supply will play a critical role in increasing upstream usage, including regional high-rate CNG stations, regional LNG liquefaction and loading facilities, gas conditioning equipment for field gas use, transportation trailers and on-site offloading equipment, and developing a network of third-party transportation providers.
Click on this link to view or download the complete presentation: Bruchman Midland Presentation .