Press Esc to close



For full content view: Log in Now!

  • Coalbed methane activity cools off

    D. M. Cohen

    A weak commodities market, increasing production costs, slow permit turnaround and rising natural gas inventories have contributed to a slowdown of North American coalbed methane activity during the past 12 months, continuing a trend seen last year. Production stayed level in 2006, and CBM drilling is predicted to drop for the first time in 2007. This slowdown of activity occurs as reserves figures rose in 2006 with the addition of the Alaskan North Slope to the US Geological Survey’s CBM recoverable reserves estimate, increasing the figure 27% to 85 Tcf from 67 Tcf. The San Juan basin retained the greatest part of these reserves with 24.24 Tcf, followed by the Alaskan North Slope with 18.06 Tcf, the Powder River basin with 14.26 Tcf and the Appalachian basin with 8.40 Tcf. The US Department of Energy’s proved reserves rose considerably less, to 19.89 Tcf from 18.39 Tcf.

This area of the site is restricted. In order to gain access, please either Log In, or subscribe to World Oil.

Two options are available to you for creating an account.

1. Get a Free Trial Subscription to World Oil Magazine and gain immediate access to select content on World Oil Online.

Start a Free Trial Subscription and gain immediate access to the complete current issue of World Oil Magazine. Plus, you’ll receive 3 upcoming issues of World Oil Magazine in print or digital format.* You also receive access to the Energy Events Calendar, Industry Statistics and WO Wire’s news and industry coverage.

Free Trial

2. Purchase a subscription to World Oil magazine and gain immediate and complete access to World Oil Online. As a Total Access subscriber you will have access to all areas of the site available to registered users and free subscribers as well as having access to such premium content areas as:

  • The Archives section containing over ten years of complete magazine archives,
  • The WO DataHub's engineering tables and directories,
  • The World Oil annual forecasts, including past predictions,
  • Select World Oil technical handbooks,
  • And much, much more!


Physical copies of this content may be available for purchase. Visit the Reprints & Back Issues section.

If you are already a paid subscriber and do not have access, please email



Engineering Data Tables

World Oil's specialized upstream Engineering Data Tables featuring the Drill Bit Classifier, Tubing Tables and more. Get Total Access today.


2013 Fracturing Technology

2013 Fracturing Technology