Double-piston type liquid production capacity metering device and method for oil well

• Main Authors: LIU JUN, SONG JUNSHU, CAI QUAN, LU YUQING, WANG ZHEN
• Format: Patent
• Language: Chinese; English
• Published: 01.12.2020
• 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 discloses a double-piston type liquid production capacity metering device for an oil well. The double-piston type liquid production capacity metering device comprises a main pipeline anda liquid outlet pipeline, wherein the liquid inlet end of the main pipeline is communicated with a buffer gas distribution device for separating gas in crude oil; the liquid outlet end of the main pipeline is communicated with a metering device for metering the crude oil production capacity of the oil well; the liquid outlet end of the metering device is communicated with the liquid outlet pipeline; and the buffer gas distribution device and the metering device are controlled by a monitoring system. According to the double-piston type liquid production capacity metering device, crude oil produced by a single oil well can be degassed, the situation that accurate metering of the liquid production capacity of the crude oil is affected due to the fact that gas exists in the crude oil is avoided, the liquid production