Companies contributing most to U.S. onshore oil production are expected to cut capital spending as the weak oil market endures, a federal energy report said. West Texas Intermediate, the U.S. benchmark for crude oil prices, closed Thursday at $48.89 per barrel, more than 17 percent below the start of July and more than 50 percent below peak prices in June 2014. Most oil companies are cutting spending on exploration and production and shedding staff. Though some sectors are performing well, the economy in Texas , the No. 1 oil producer in the nation, is feeling pressure from the downward trajectory for crude oil prices. The U.S. Energy Information Administration analyzed financial data from 44 companies focused heavily on shale oil production in the United States. […]