500 meters. The state stipulates that it is forbidden to build residential houses within 500 meters of oil wells. The living area of gas well is far away from the edge of well site, which is noisy and harmful to human body. Diamond oil is oil drilling, which uses oil drilling equipment to collect underground oil. The total number of oil and gas reservoirs controlled by a single geological structure (or stratum) in the same oil and gas producing area. Oil and gas fields have one or more oil and gas reservoirs. An oil field that is mainly an oil reservoir in the same area.