The coronavirus pandemic has stalled factories and shut down business around the world, causing a historic drop in oil demand just as production was reaching new highs. WSJ explains the oil price bust that could reshape energy markets. U.S. crude supply is falling at its quickest pace ever, easing a global oil glut and spurring a swift recovery in fuel prices. Yet oil’s push back above $40 a barrel as drivers return to roads isn’t enough for beleaguered shale producers, which until recently were the driving force behind a transformation of the global energy industry. For many of them, prices haven’t risen far enough to help ease the strain of debt taken on during boom times. And the need to cut output in the face of pandemic-hit demand means they can’t pump…