Frequently asked questions: tight-gas reservoirs are responsible for more than 15% of U.S. natural gas production. Here are answers to some common questions about this burgeoning resource.

Publication: Oil and Gas Investor

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COPYRIGHT 2006 Hart Publications, Inc.

What is tight gas?

"Tight gas" refers to natural gas produced from reservoirs that have very low porosities and permeabilities. Reservoirs are usually sandstone, although carbonate rocks can also be tight-gas producers. The standard industry definition for a fight-gas reservoir is a rock with matrix porosity of 10% or less and permeability of 0.1 millidarcy or less, exclusive of fracture permeability.

How prevalent are tight-gas reservoirs?

Tight-gas reservoirs are found throughout the world and occur in most...

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