Water and polymer layered injection device suitable for offshore oil fields

• Main Authors: LIU MIN, ZHANG FENGHUI, CHAO SHENGQI, NIU GUIFENG, HUANG ZECHAO, YANG WANYOU
• Format: Patent
• Language: Chinese; English
• Published: 15.02.2019
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention belongs to the technical field of layered polymer injection in offshore oil fields, and discloses a water and polymer layered injection device suitable for the offshore oil fields. The water and polymer separate injection device is mainly composed of an upper joint, an outer cylinder, a lower joint and a central adjustment shaft, a central injection channel and a bridge type injection channel are formed to be separately used as a water injection channel and a polymer injection channel; the two channels are separated by a sealing structure and do not interfere with each other andare separately and correspondingly connected to a water injection port and a polymer injection port; and a measuring and adjusting tool is used for controlling a middle adjusting shaft to move axiallyto change injection channels of different media, the opening, closing and injection quantity control over the water injection port and the polymer injection port are realized, and the layered injection and injection quantity