John S. Herold Inc., the trusted independent research firm, has once again provided OGFJ with updated production data for our periodic ranking of US-based private E&P companies. Once again, these rankings are based on operated production only within the United States.

Not much has changed since we published the list in our January issue. The only difference in the rankings is that JMA Resources Inc./ Energy Co. LLC has moved up one spot from No. 85 on our list to No. 84. Pioneer Exploration Co. recorded a loss in barrels of oil equivalent (boe) from 1,827,891 in January to 1,808,309 in April. This moves the company down one spot from No. 84 to No. 85.

One change came from No. 55-ranked Nadel and Gussman LLC. The company was previously listed as Nadel & Gussman and a change was made to our April list to reflect the more accurate company name. The company also supplied the journal with the names of its top executives, as is shown in the alphabetical listing. James Adelson, president and Steve Heyman, partner were added to the list.

One company on the list, Leor Energy, has made much progress since the last printing of the 100P. The company achieved a more than 10-fold increase in natural gas production in Amoruso field in Robertson County, Tex., since April of 2006. At the end of 2006, gas production from the field exceeded 90 MMcf/d gross. This was a result of another successful Deep Bossier completion for Leor and its operational partner, a subsidiary of EnCana Corp.

Leor and EnCana continue to enjoy a 100% success rate in wells drilled in Amoruso field. One of Leor’s most successful wells at the field, completed in late June 2006, is still operating at a flow rate around 30 MMcf/d from one completed zone. Leor believes this well to be among the largest gas wells in North America producing from a single completed zone.

Recently, Leor Energy entered into a $150,000,000 3-year senior secured, revolving credit facility with JPMorgan Chase Bank. In addition, Leor Exploration & Production LLC, the parent company of Leor Energy LP, has closed a $150,000,000 private placement of equity securities with Merrill Lynch PCG, a proprietary investment group within Merrill Lynch & Co. Inc.

OGFJ and John S. Herold will continue to update the information as new production figures become available. Future issues of OGFJ will contain production volumes broken down into total gas production and total liquids production, as well as news and relevant information regarding individual companies.

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OGFJ100P company update

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