Oil and gas activity in Wyoming in 1963 and so far in 1964 was highlighted by interesting discoveries and developments which could have a far-reaching effect on future exploration in the state. In the way of what might be termed new and startling were: a Cretaceous Lewis Sandstone oil discovery at a rank wildcat in the Hanna basin; stratigraphic Tensleep accumulation discovered on the north side of the Big Horn basin; two widely separated Cretaceous Lakota Sandstone discoveries in the Powder River basin; a flurry of shallow Cretaceous Turner Sandstone drilling, also in the Powder River basin; experimental fire flooding and steam flooding at several places in the state; and two deep wells, Shell's 20,000-foot Madison test at Pavillion in the northwest portion of the Wind R ver basin and Texaco's 15,000-foot Jurassic Nugget gas well at Table Rock field in the Washakie basin.

The old standbys continued to furnish new reserves--the Minnelusa, Muddy, and Fall River (Dakota) reservoirs in the Powder River basin, and the Tertiary and Late Cretaceous oil and gas sandstones on the Big Piney La Barge platform in the Green River basin. At the Timber Creek field in the Powder River basin, discovered late in 1962, 1.5 million barrels of oil was produced during 1963. At Birch Creek, also discovered in 1962, on the La Barge platform, over 1.1 million barrels of oil was produced in 1963.

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