CO2 enhanced oil recovery offers an economic and environmental win-win.

Brookeland and Giddings fields are back in the news, as superior commodity prices have revived interest in the Gulf Coast’s polemical Austin Chalk reservoir.

Utah’s Mancos shale gets strong attention from Uinta Basin operators.

­Horizontal drilling in North Dakota’s enormous Bakken resource play is yielding astonishing volumes of oil.

Unconventional wells are producing unexpected payoffs.

The Illinois Basin’s New Albany shale has been a tough nut to crack, but start-up of a new field in Kentucky and the kick-off of a basin-wide research consortium are positive fracs.

Two Canadian firms have made offshore discoveries that keep toes tapping in Trinidad and Tobago, a top gas exporter in swinging growth mode.

Highlights include Norway, Mexico and Brazil.

Canada’s first big shale play looks to be a doozey. In British Columbia’s remote Horn River Basin, Muskwa and Horn River shales show multi-Tcf promise.

Utah exploration has come alive with fresh success in conventional reservoirs in its central Hingeline and in resource plays in the Paradox Basin’s salt and clastic Paradox formation.

A shale that's enjoying a shot in the arm is the Cretaceous Baxter in the Greater Green River Basin.

Lower Huron and Marcellus Devonian gas shales are invigorating the Appalachian Basin, the world’s original producing province.

Highlights from Wayne County, Mich., New York's Yates County and more.

Explorations from Anderson County and Hidalgo County, Texas, and much more.

Discoveries near the Prudhoe Bay in Alaska, and Froid in Montana.

Highlights include Canada, Brazil and India.

Three Texas Panhandle, Ark-La-Tex and Appalachia formations have uncommonly fine responses to multiple stimulations in horizontal wells.

Northernmost Alaska is offering new explorationists wonderful promises and breathtaking challenges.

Houston-based ATP Oil & Gas Corp. has created a valuable asset out of a marginal deepwater field in the Gulf of Mexico. The Gomez Field is in approximately 3,000 feet of water on Mississippi Canyon Block 711.