OIL RECOVERY SYSTEM

• Main Authors: AOYAMA KAZUFUMI, ISHIGAMI DAISUKE, SEO SHOJI, OTA KEISUKE, KOYANAGI YUYA, OTSUKA SEIJI, UENO YOSUKE, OHASHI MAIKO, MITSUNARI MASAYA, KAWAI TATSUJI
• Format: Patent
• Language: English; Japanese
• Published: 10.06.2021
• Subjects: CHEMISTRY; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; METALLURGY; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

To provide an oil recovery system that can maintain oil recovery efficiency even if the groundwater level fluctuates.SOLUTION: An oil recovery system 2 comprises a well 1a provided in a ground 5 in a site 9 of an oil storage facility 3, an oil recovery drain 15 arranged near a groundwater surface 29 in which an oil layer 31 is present in the well 1a, a suction hose 17 having one end connected to an oil recovery drain 15 and the other end extending, a vacuum suction unit 19 connected to the other end of the suction hose 17, a packer 21 which is closing means through which the suction hose 17 is passed and closes the well 1a at a position above a perforated section 14 of a strainer pipe 13. When the oil layer 31 moves with the movement of the groundwater surface 29, the oil recovery drain 15 is moved up and down in the well 1a to be arranged at the position of the oil layer 31.SELECTED DRAWING: Figure 1 【課題】地下水位が変動しても油の回収効率を維持できる油回収システムを提供する。【解決手段】油回収システム２は、油貯蔵施設３の敷地９内の地盤５中に設けられた井戸１ａと、井戸１ａ内の油層３１の存在する地下水面２９付近に配置された油回収用ドレーン１５と、一端が油回収用ドレーン１５に連結され、他端が延伸している吸引ホース１７と、吸引ホース１７の他端に連結された真空吸引部１９と、吸引ホース１７が通され、ストレーナ管１３の有孔区間１４より上方の位置で井戸１ａを塞ぐ閉塞手段であるパッカ２１とを具備する。地下水面２９の移動に伴って油層３１が移動すると、油回収用ドレーン１５を井戸１ａ内で上下動させて油層３１の位置に配置する。【選択図】図１