Matrix type centralized wellhead oil extraction method and oil extraction wellhead groove

According to the matrix type centralized well mouth oil extraction method and the oil extraction well mouth groove, oil extraction well mouths are arranged in a dense-interval matrix mode, waterproof separation walls are arranged at the two ends of the well mouth groove respectively, and the bottom of the well mouth groove, box-type structure groove walls and the waterproof separation walls are integrally poured through anti-seepage reinforced concrete; a plurality of well mouth grooves are arranged side by side, the box-type structure groove wall is arranged between two adjacent well mouth grooves, drainage ditches and water collecting tanks are arranged in the well mouth grooves, during drilling operation, a drilling machine stretches across the well mouth grooves, the vehicle passing cover plate is buckled on the well mouth grooves except a drilling machine operation area, and after drilling is completed, steel grating plates are completely laid on the well mouth grooves. The device is simple in structure,