United States Shale Gas Plays Map
View Larger
Map
Haynesville Shale
The Haynesville Shale, is a black, organic-rich shale of Upper
Jurassic age that underlies much of the Gulf Coast area of the
United States. "Haynesville Shale" is a drillers term for shale
rock units within the Haynesville Formation.
The Haynesville Formation is underlain by the Smackover Formation
and overlain by rocks of the Cotton Valley Group. It was deposited
about 150 million years ago in a shallow offshore environment.
Geologists have long known that the Haynesville Formation contained
natural gas. However, because of its low permeability the
Haynesville was originally considered to be a gas source rock
rather than a gas reservoir.
Today, natural gas production from the Haynesville occurs from
rocks about two miles beneath northwestern Louisiana, southwestern
Arkansas and eastern Texas. The most productive areas have been
Caddo, Bienville, Bossier, DeSoto, Red River and Webster Parishes
of Louisiana plus adjacent areas in southwest Arkansas and east
Texas.
Comment by RED FOX on March 11, 2011 at 7:27pm 
You need to be a member of Drilling Ahead to add comments!
Join Drilling Ahead