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landownerPermalink Reply by Checkmateking on July 15, 2010 at 17:00

Approximately 80% the first year.

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Permalink Reply by Chris on July 15, 2010 at 17:29

Are you saying 80% decline in production after the first year?

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landownerPermalink Reply by Henry on July 15, 2010 at 23:13

Chris,
Yes. Many companies have posted decline curves and they all show numbers like this.

However, some companies, led by Petrohawk, are now choking back their wells to reduce production in the first year. The thinking (and evidence) suggests that by choking the well back, the pressure will be maintained longer, and ultimately, the well will produce more total gas. Petrohawk's choked-back wells show fairly constant production for the first 6-8 months. There isn't a lot of data to show what happens at the 1-2 year mark yet.

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Oil & Gas ProPermalink Reply by Skip Peel - Mineral Consultant on July 16, 2010 at 4:44

There are a number of good decline curve discussions in the archive. Here is one:

http://www.gohaynesvilleshale.com/forum/topics/2117179:Topic:114804

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