The Edwards Limestone is a hot gas play in south Texas, while 110 km to the north, it is the primary water source for nearly 2 million people including the City of San Antonio, the site of this year’s AAPG Annual Convention.
Most of the sub-basins of the North Sea geological province are now considered to be in a mature exploration phase. The supermajors are consequently on their way out. Thanks to various initiatives in both the Norwegian and UK Sectors, however, the pace of exploration is being kept up by a high number of ambitious small companies.
The Bream (17/12-1) and Brisling (17/12-2) oil accumulations in the Egersund Basin of the North Sea were both discovered in the early 1970’s. A few years later, albeit more than 25 years ago, the 18/10-1 oil accumulation was discovered in the same sub-basin.
The disputed area between Norway and Russia in the Barents Sea, equalling the Norwegian North Sea in size, has a different petroleum system than the proven oil and gas provinces to the west and east. With pre-Jurassic source rocks, the most obvious targets are in Triassic clastics and Paleozoic carbonates.
The coastal plain of the Arctic National Wildlife Refuge in Alaska is not likely to be exploited for hydrocarbons in the near future. Nevertheless, this geological province is referred to as the "nation’s single greatest onshore prospect for oil".