Do wells produce from a lake of oil and/or natural gas under the ground?
No. Oil and/or natural gas wells produce in fields which are geographical areas defined by the geologic limits of a producing interval. Producing intervals are not limitless. Producing intervals can be in the form of sandbars, sand channels, limestone reefs or dense materials that have fracture networks. Each producing interval has its own trend direction that it follows in that specific field. The oil and/or natural gas is contained in the pore spaces when sandstone or limestone is encountered or in the fractures when dense material is encountered with fracture networks. The oil and/or natural gas is trapped under pressure and not able to migrate in any of the four directions. Dense material above and below the producing interval helps to keep the oil and/or natural gas from migrating vertically. The oil and/or natural gas is trapped laterally due to the outlying areas of a field having blockages such as faults and/or producing intervals being too dense to contain oil and/or natural g
