EOG Resources Inc. (NYSE: EOG) is one of the largest independent natural gas producers in the United States. EOG’s reserves are primarily located in major basins within the United States, but the firm also has international operations in Canada, Trinidad, the United Kingdom, and the North Sea. 
With approximately 85% of its production in natural gas, EOG has responded to the depletion of conventional sources of this commodity by shifting its focus to unconventional deposits such as the Barnett Shale near Fort Worth, Texas. The difficult process of extracting gas from unconventional resources has only become economically feasible in recent years, and EOG has become highly efficient in these operations. In the Barnett Shale, it has reduced costs by cutting the time it takes to drill a well in half, and it plans to apply lessons learned at this unconventional field to other shale-based resources in the next two years.
The Barnett Shale has become one of North America's "hot spots" for natural gas and EOG owns about 610,000 acres of this area. In general, EOG avoids pricey acquisitions and relies on its ability to develop existing operations in order to keep costs low. Although EOG’s competitors have generated more impressive production growth, EOG maintains one of the industry’s lowest-cost asset bases. The firm has also outlined plans to build its own gathering, processing, and transportation infrastructure for its resources in Texas and North Dakota, which will create vertical efficiencies and maximize margins in the long term.
Traditional oil and natural gas deposits are being depleted and the importance of developing new technologies and discovering new basins is at the core of EOG’s ability to sustain economic growth since they do not rely on expensive acquisitions to grow. EOG’s decision to avoid acquisitions has kept the company from enjoying impressive production growth but allowed it maintain efficient operating margins. In comparison with some of its leading competitors such as XTO Energy and Devon Energy, EOG has not grown as rapidly which might lead some investors to think the company's success has been congruent with its growth. However, EOG’s low cost mentality in its holdings in some of the most productive and promising areas for natural gas (the Barnett Shale) has allowed it to generate better margins and returns than other companies with properties in the same regions.
As of 2007, EOG’s estimated net proved natural gas reserves were 6,095 Bcf and estimated net proved crude oil, condensate and natural gas liquids reserves were 118 million barrels. Approximately 60 percent of EOG’s reserves on a natural gas equivalent basis were located in the United States, 20 percent in Canada, 20 percent in Trinidad and less than 1 percent in the United Kingdom North Sea. 
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