The most typical type of pump involved in the field is the pump that actually brings up the oil from the ground. Once the drilling rig is able to locate the oil reservoirs beneath the earth’s surface, they will begin to pump the oil from the hole. The pump can help to control the oil coming to the surface, and it can actually help remove oil that’s trapped in the ground. Most of the time, the oil doesn’t have enough pressure to burst from the hole, so the oil producers utilize pumps.