Word: overthruster
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...many pockets of the West, the hard hat is edging out the Stetson. From their skyscrapers along Denver's 17th Street, energy company executives are organizing new drillings for oil and gas all along the Overthrust Belt, a wide twist of rocky ground that stretches 2,300 miles from northwestern Montana through southern Arizona. The Overthrust Belt was formed eons ago, when two tectonic plates of the earth's crust heaved and crunched together, crinkling one plate over the other. Geologists have known for decades that the region hid pools of oil and gas some...
...richest and relatively undeveloped new regions being explored is the Western Overthrust Belt, a geological formation of petroleum- and gas-bearing rock running from Canada to Mexico. Other new drilling in the mainland U.S. is under way in the Tuscaloosa Trend of Louisiana, the Permian Basin of West Texas, the Williston Basin of North and South Dakota and Montana, and offshore in the Gulf of Mexico...
...Thus no experts expect any new Spindletops from conventional fields in Texas, Oklahoma and California. Still, the Geological Survey estimates that between 12.5 billion and 38 billion bbl. of oil are waiting to be found offshore. One of the most promising areas on land is the so-called Western Overthrust Belt in the rugged, mountainous area from southern Colorado to the Canadian border. Experts believe the area could contain many fields of 100 million bbl. or more-adding up to perhaps 14 billion bbl. of oil and 52 trillion cu. ft. of natural...
Higher prices have persuaded oilmen to return to and redrill wells in the Williston Basin of North Dakota and eastern Montana, an important producing area in the 1950s. They are also exploring for oil in the Overthrust Belt, which runs down the Rocky Mountains, and they are going after gas in Oklahoma, the Texas Panhandle and central Louisiana. Across the country, small "stripper" wells and others that once would have been abandoned as uneconomic are being kept open...
...most exciting strike was made in 1975 when a drilling crew hit oil and gas deep in northern Utah's Pineview Field in what is known as the "Overthrust Belt." A giant geologic knot that twists from southern Colorado to the Canadian border, the belt was not considered worth serious exploration at previous prices because of the tough and expensive drilling conditions. Pools of oil and gas are randomly located and perched on top of one another, and such formations make traditional exploration and analysis difficult, if not impossible. Says A.B. ("Pete") Slaybaugh, chief of Continental...