First Use of Natural Gas to Power Equipment for Hydraulic Fracturing in Northeastern Pennsylvania

   First Use of Natural Gas to Power Equipment for Hydraulic Fracturing in
                          Northeastern Pennsylvania

PR Newswire


SUSQUEHANNA COUNTY, Pa., May 20, 2013 /PRNewswire/ --Cabot Oil & Gas
Corporation (NYSE: COG) announces the use of Marcellus Shale natural gas to
fracture wells via innovative dual fuel technology. This marks the first time
"field" gas has been used in northeastern Pennsylvania for this purpose. The
process of using clean-burning natural gas can displace up to 70 percent of
the diesel fuel traditionally used to operate fracturing equipment. This
successful effort was a partnership with FTS International (FTSI) and
Caterpillar Global Petroleum (NYSE: CAT).

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Use of dual fuel technology, where the engines operate on a mixture of natural
gas and a small portion of diesel, provides several benefits:

  oReduced air emissions for a cleaner environment, due to a reduction in
    diesel usage
  oReduced truck traffic when field gas at or near the well site is used due
    to a reduction in the transportation of diesel fuel to site
  oReduced costs, as natural gas can be a less expensive fuel option than
    diesel, providing potential cost savings for the industry and for energy

"Cabot is continually searching for ways to utilize cutting-edge,
environmentally friendly technology during our operations," explained Dan O.
Dinges, Chairman, President and Chief Executive Officer for Cabot. "We are
already converting our vehicle fleet and currently have a drilling rig using
natural gas as well, so the next step is to utilize the technology on a
hydraulic fracturing site."

In order to operate using natural gas, FTSI's mobile pressure pumping unit at
the site was retrofitted with a Dynamic Gas Blending (DGB) kit from
Caterpillar. The system enables substitution of diesel fuel with natural gas
during high pressure pumping operations and is compatible with field gas,
compressed natural gas (CNG) and liquefied natural gas (LNG).

FTSI Chief Executive Officer Greg Lanham said, "This is a terrific example of
the oil and gas industry working together to develop and implement innovative
technologies that are both environmentally conscious and operationally
efficient. FTSI has been evaluating dual fuel conversion technologies for the
last year to identify the best solution for our well completion fleets. Our
goal is to increase efficiencies for our customers while ensuring the safety
and equipment reliability our customers expect from FTSI."

"Caterpillar is pleased that the Cat Dynamic Gas Blend system has performed
exceptionally well and met FTSI and Cabot's expectations," Bart Myers
Caterpillar Global Petroleum product director commented. "The Cat well
stimulation DGB system makes no compromise with performance, safety, and
reliability while burning a mixture of diesel and natural gas fuels. User
feedback has been very positive regarding engine performance, and the
integrated safety features of the Cat DGB system."

"We congratulate Cabot on this remarkable accomplishment of using clean and
abundant natural gas from the production process for an extensive hydraulic
fracturing operation," said America's Natural Gas Alliance President and Chief
Executive Officer Marty Durbin. "Cabot's commitment to using natural gas to
power its own operations is another in a long list of cost-effective and smart
decisions ANGA members all over this country are making to use their own
natural gas resources to save money, contribute to air quality improvements,
and put an American fuel to work."

Cabot Oil & Gas Corporation, headquartered in Houston, Texas, is a leading
independent natural gas producer, with its entire resource base located in the
continental United States. For additional information, visit the Company's
Internet homepage at

FTS International (  is a leading provider of well completion
services for the oil and gas industry. Exploration and production companies
use FTSI's products and services primarily to enhance their recovery rates
from oil and gas wells. FTSI's integration provides a competitive edge, as the
company custom manufactures, assembles and produces many key components used
in its operations, including high-pressure hydraulic pumps and mobile pressure
pumping units. FTSI also offers wireline services and water management
services, and owns and operates sand mines and facilities for producing

Caterpillar Global Petroleum, Caterpillar Inc.'s oil and gas division with
headquarters in Houston, Texas, consolidates all the sales and service
activities for Cat oil and gas power solutions. Since the 1930s, Caterpillar
has manufactured engines for the oilfield and today provides premier power
solutions with outputs from 31 to 16,000 kW. The sales and service network
includes more than 2,100 dealer locations world-wide dedicated to support
customers in the drilling, production, well service and gas compression
segments. More information is available at:

SOURCE Cabot Oil & Gas Corporation

Contact: George Stark, Director, External Affairs, Cabot Oil & Gas
Corporation, 412.249.3909,; Pamela Percival, Director
of Corporate Communications, FTS International, 817.862.2068,; Jenna E. Janik, Marine & Oil & Gas Communications,
Caterpillar Global Petroleum, 713.895.1449,
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