US 12,146,818 B2
Experimental device and method for testing foam fluid properties and defoaming separation effects
Yuxing Li, Qingdao (CN); Qihui Hu, Qingdao (CN); Cuiwei Liu, Qingdao (CN); Wuchang Wang, Qingdao (CN); Lingya Meng, Qingdao (CN); Jinghan Wang, Qingdao (CN); and Hongtao Ma, Qingdao (CN)
Assigned to CHINA UNIVERSITY OF PETROLEUM (EAST CHINA), Qingdao (CN)
Appl. No. 17/774,037
Filed by CHINA UNIVERSITY OF PETROLEUM (EAST CHINA), Shandong (CN)
PCT Filed Nov. 3, 2020, PCT No. PCT/CN2020/126250
§ 371(c)(1), (2) Date Jul. 26, 2022,
PCT Pub. No. WO2021/088827, PCT Pub. Date May 14, 2021.
Claims priority of application No. 201911067678.0 (CN), filed on Nov. 4, 2019.
Prior Publication US 2022/0412862 A1, Dec. 29, 2022
Int. Cl. G01N 13/02 (2006.01); B01D 19/00 (2006.01); B01F 23/235 (2022.01)
CPC G01N 13/02 (2013.01) [B01D 19/0057 (2013.01); B01D 19/0063 (2013.01); B01F 23/235 (2022.01); G01N 2013/0241 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An experimental device for testing foam fluid properties and defoaming separation effects, comprising a foam generation module, an experimental loop, a foam property test module, a foam separation processing module and a defoaming result evaluation module, wherein
a tail end of the foam generation module is connected to the experimental loop, different ratios of oil-water and CO2 gas are mixed in the foam generation module to form a foam fluid, and the foam fluid is transported into the experimental loop;
the foam fluid is developed inside the experimental loop and is respectively transported to the foam property test module and the foam separation processing module at a tail end of the experimental loop;
the foam property test module receives the foam fluid that is sufficiently developed in the experimental loop, and analyzes a foam volume, a half foam life period and a foam quality of the foam fluid that is sufficiently developed;
the foam separation processing module receives the foam fluid that is sufficiently developed in the experimental loop, and separates the foam fluid that is sufficiently developed into gas and liquid; and
the foam separation processing module is provided with the defoaming result evaluation module, and the defoaming result evaluation module analyzes the gas separated by the foam separation processing module to obtain a liquid content in the gas, a droplet size in the gas and an oil content in the gas;
the foam generation module comprises an oil-water mixing kettle, a CO2 gas cylinder and a foam generation device, and the foam generation device is respectively connected to the oil-water mixing kettle and the CO2 gas cylinder through two connecting pipelines; and
the connecting pipeline from the oil-water mixing kettle to the foam generation device is sequentially provided with a second centrifugal pump and a first flow meter according to a liquid flow direction, the connecting pipeline from the CO2 gas cylinder to the foam generation device is sequentially provided with a gas storage tank and a first gas-phase flow meter according to a gas flow direction, and the oil-water mixed liquid in the oil-water mixing kettle and the CO2 gas in the CO2 gas cylinder enter the inside of the foam generation device through a liquid-phase pipeline inlet at a bottom of the foam generation device and a gas-phase pipeline inlet on a side wall of the foam generation device;
the tail end of the experimental loop is sequentially provided with a first bypass pipeline and a second bypass pipeline according to a flow direction of the foam fluid, and a main pipeline at the tail end of the experimental loop is connected to the foam separation processing module;
the foam property test module comprises an analysis tank, a lower end of the analysis tank is provided with a liquid-phase outlet, a side wall of the analysis tank is provided with a gas outlet, a first absorption box and a first sampling valve are sequentially installed outward from the gas outlet, a water-absorbing and oil-absorbing material is placed in the first absorption box, and the first sampling valve is connected to a gas collection bag through a pipeline;
the foam separation processing module comprises a horizontal separator, the horizontal separator is a visualized tank body, and a side wall of the tank body is provided with standard scales;
a lower end of the horizontal separator is provided with a liquid-phase outlet, the periphery of the lower end of the horizontal separator is coated with a second heating jacket, an upper end of the horizontal separator is provided with a gas-phase outlet, and the gas-phase outlet on the horizontal separator is connected to the defoaming result evaluation module;
the upper end of the horizontal separator is also provided with a pipe column type cyclone separator, a lower end of the pipe column type cyclone separator is communicated to the horizontal separator, the main pipeline at the tail end of the experimental loop is also provided with a third bypass pipeline, the third bypass pipeline is connected to the pipe column type cyclone separator, and the foam fluid that is sufficiently developed enters the pipe column type cyclone separator through the third bypass pipeline of the experimental loop, and then flows into the horizontal separator from the pipe column type cyclone separator;
a foam fluid inlet of the pipe column type cyclone separator is provided with a gas-phase outlet, and the gas-phase outlet of the pipe column type cyclone separator is communicated to the gas-phase outlet of the horizontal separator through a gas pipe; and
the gas-phase outlet of the horizontal separator is connected to the defoaming result evaluation module;
the defoaming result evaluation module comprises a droplet size observation window and a second absorption box at a tail end of the droplet size observation window;
a water-absorbing and oil-absorbing material is placed in the second absorption box.