Caterpillar launches dynamic gas blending kit for well stimulation

Posted on 13 May 2013

Caterpillar Global Petroleum has developed a dynamic gas blending (DGB) retrofit kit for use on the Cat 3512C (HD) engine for well stimulation applications. “Our frac system is going to be able to substitute up to a little over 60% of the diesel fuel with natural gas,” said Scott Roberts, Caterpillar Global Petroleum well service product marketing manager in an exclusive meeting with Drilling Contractor. The system is capable of achieving maximum substitution at various speeds between 1,400 and 1,900 rpm and above 20% engine load over the full operating range.

Along with significant fuel cost savings by substituting diesel fuel with natural gas, operators can run the system with CNG, LNG, as well as field gas with a lower heating value between 850 and 1,250 Btu.

“It can detect the changes in the fuel quality and adjust itself without someone having to go fix settings or recalibrate anything,” Mr Roberts said. “Most importantly, we can do all this while maintaining the Tier 2 emissions that the engines have already been certified to.” A combined muffler and Cat Diesel Oxidation Catalyst included in the DGB kit help the engine sustain US EPA Tier 2 level emissions.

The DGB system is fully integrated with the engine control system, optimizing engine performance and ensuring that the engine always operates within safe parameters while blending diesel and natural gas.

Caterpillar introduced its Cat DGB system for land drilling and production last year at OTC. The latest system Cat 3512C (HD) engine will be commercially available in June 2013.

Cat is a registered term of Caterpillar.

Leave a Reply

*

FEATURED MICROSITES


Recent Drilling News

  • 17 December 2014

    Saudi Aramco: Four factors for a sustainable drilling business

    Despite the modest growth in demand and drop in oil prices today, the long-term outlook for industry is healthy. “Our industry will need to add around 40 million bbl per day for new capacity...

  • 16 December 2014

    Ensco development program produces driller in 3 years

    Ensco’s Accelerated Development Program (ADP) takes a “green” individual and, within a three-year period, trains them to become a driller. In response to personnel shortages in various areas, including drilling...

  • 16 December 2014

    Saudi Aramco: ‘Industry cannot afford to lose talent when the economy is down’

    Industry is facing a human resources challenge in two areas: the ageing workforce and the shortage of skills, Mohammed Al Sellemi...

  • 16 December 2014

    Nanotechnology has potential to improve tool performance in extreme environments

    In terms of temperature stability and corrosion, tools have limitations, especially in extremely challenging drilling environments. Jothibasu Ramasamy...

  • 16 December 2014

    Colville: WCI provides forum to evaluate practical, economical advances in well control practices

    Major players throughout industry are joining forces under the Well Control Institute (WCI). The mandate of WCI is “to provide the definitive forum...

  • Read more news