Pressure-balanced automatic dosing device for oil well

• Main Authors: CHANG XUEYI, CHENG WEIXING, XU NING, GUO XUEMIN, JIA YUNFEI, ZHANG HAITAO, SHI YANHUI, WANG FENG
• Format: Patent
• Language: Chinese; English
• Published: 13.09.2022
• 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 utility model relates to the technical field of oil well casing dosing, in particular to a pressure balance oil well automatic dosing device. The device comprises a medicine storage container, a medicine adding container, a balance pipe, a flow meter, a regulating valve and an electromagnetic valve, one end of the dosing container is communicated with the medicine storage container through a pipeline, and the other end is communicated with an oil well casing through a pipeline; one end of the balance pipe is communicated with the dosing container, and the other end is communicated with the oil well casing; and a regulating valve, a flow meter and an electromagnetic valve are sequentially arranged on a pipeline for communicating the dosing container with the oil well casing. According to the chemical feeding device, automatic, continuous and accurate chemical feeding can be achieved, in the chemical feeding process, chemical liquid is added into an oil well casing through the gravity of the chemical liquid