Intelligent layered injection allocation tubular column for water-polymer separation injection well and operation method of intelligent layered injection allocation tubular column

• Main Authors: LIU MIN, HUANG YUXUAN, WEI LAI, NIU GUIFENG, LI YUNFENG, CHENG XINPING
• Format: Patent
• Language: Chinese; English
• Published: 03.02.2023
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; ELECTRICITY; FIXED CONSTRUCTIONS; GENERATION; INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINEDOPTICAL AND ELECTRIC CABLES OR LINES; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention relates to an intelligent layered injection allocation tubular column for a water-polymer separate injection well, which belongs to the technical field of oil field yield increase and injection increase, and comprises an underground double-layer oil pipe, an underground safety valve, a top packer, a cable-passing positioning seal, a double-medium separate injection working barrel, an isolation packer, a cable-passing insertion seal and a round plug, the double-medium separate injection working barrel is connected with a ground controller through a steel armored cable; the operation method comprises the following steps: pigging; if the joint debugging test of the double-medium separate injection working barrel is normal, the tubular column and the steel armored cable are put down; the pipe column is subjected to seal examination; different media are injected separately according to oil reservoir requirements; and fixed-point acidification. According to the invention, online stepless regulation an