Oil companies converting from diesel to natural gas on rig sites

Fuel Fix:
The biggest, baddest engines in the world, long chained to diesel fuel, are on the verge of a mass transformation because of cheap natural gas – with oil field equipment holding particular potential, executives said Thursday during a summit of heavy fuel users and producers.

“Here’s the first reason that large engines are going gas,” said JoelFeucht, director of gas engine strategy for Caterpillar’s energy and power systems division. “Large engines burn the most fuel. I could try to make it harder, but that’s pretty straightforward.”

Oil companies alone use nearly 1.2 billion gallons of diesel fuel a year just for pressure pumping equipment that supports hydraulic fracturing, said David Hill, vice president of natural gas economy operations for Encana Corp. Adding the diesel used to power drilling rigs themselves, the total is more than 2.8 billion gallons annually, said Pierce Dehring, a project engineer for Baker Hughes.

A single fracturing job can involve 7,800 gallons of diesel, at a cost of as much as $5 a gallon at some oil field operations, said Pat Osachuk, an engineer for Encana.

The savings of natural gas, which now is around $2 cheaper for the energy-equivalent of one gallon of diesel, inspired a wave of interest at the High Horsepower Summit 2012, a conference dedicated to natural gas use in high-horsepower applications. Hundreds of company representatives packed into conference rooms at the Royal Sonesta Hotel in Houston to hear about developing engine technology and various uses of natural gas in large engines.

Feucht said that Caterpillar, which makes large engines for oil field operations, mining trucks and other uses, is committed to being a leader in natural gas-powered products.
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This is a move I have favored for some time.  It just makes too much sense for operators to use the fuel their are producing.  It should make producing energy less expensive, and it will probably lead to technological advancements in the building of engines that optimize our most abundant fuel.

There si more on the conversion of large equipment trucks used in mining to natural gas here.  A single mining truck could save $500,000 a year by converting to natural gas.

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