In this photo from Monday, Dec. 22, 2014, a well pump works at sunset on a farm near Sweetwater, Texas. At the heart of the Cline, a shale formation once thought to hold more oil than Saudi Arabia, Sweetwater is bracing for layoffs and budget cuts, anxious as oil prices fall and its largest investors pull back. (AP Photo/LM Otero)
In this photo from Monday, Dec. 22, 2014, a well pump works at sunset on a farm near Sweetwater, Texas. At the heart of the Cline, a shale formation once thought to hold more oil than Saudi Arabia, Sweetwater is bracing for layoffs and budget cuts, anxious as oil prices fall and its largest investors pull back. (AP Photo/LM Otero) LM Otero AP
In this photo from Monday, Dec. 22, 2014, a well pump works at sunset on a farm near Sweetwater, Texas. At the heart of the Cline, a shale formation once thought to hold more oil than Saudi Arabia, Sweetwater is bracing for layoffs and budget cuts, anxious as oil prices fall and its largest investors pull back. (AP Photo/LM Otero) LM Otero AP