Oil recovery system and method of placing drain material

摘要

Problem to be solved: to provide an oil recovery system capable of maintaining the recovery efficiency of oil and an installation method of a drain material when the oil layer thickness or depth direction changes.The oil recovery system 2 comprises a drain material 3 disposed in the ground 1, a suction hose 5 having one end connected to the drain member 3, and a vacuum suction portion 7 connected to the other end of the suction hose 5.The drain material 3 is divided into drain material 3-1 and 3-2 parallel to the depth direction.The drain members 3-1 and 3-2 are partially formed with water blocking portions 11-1 and 11-2, and the suction portions 9-1 of the drain material 3-1 are different in depth from the suction portions 9-2 of the drain material 3-2.The suction hoses 5-1, 5-2 are coupled to drain materials 3-1, 3-2, respectively.Diagram