A device for evaluating the effectiveness of foam oil generation
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A foam oil, effective technology, applied in the direction of material inspection products, etc., can solve the problems of high price, time-consuming, large half-life measurement error, etc., and achieve the effect of convenient operation and simple structure
Active Publication Date: 2016-08-24
CHINA UNIV OF PETROLEUM (EAST CHINA)
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[0005] The above-mentioned experimental method has the following disadvantages: (1) The experimental process is complex and time-consuming, requiring processes such as formation crude oil compounding, setting the pressure drop rate and depressurization; (2) The experimental equipment needs to be resistant to high temperature and high pressure, and has visualization functions, which is expensive; ( 3) Since not all heavy oil reservoirs will produce foamy oil during depressurization and cold recovery, the oil samples used in the experiment are heavy oil from specific places such as China, Venezuela or Canada, which limits the scope of research in this field; (4) the above method generates foam oil by decompression, therefore, when reaching the maximum height to measure the half-life, the bubble generation process cannot be stopped, so that the half-life measurement error is relatively large; The influence of oil stability; (6) The expansion and gas capture ability of foam oil cannot be measured at the same time, so the effectiveness of foam oil cannot be fully evaluated
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[0017] Below in conjunction with accompanying drawing and example the present invention will be further described:
[0018] Such as Figure 1-Figure 5As shown, a device for evaluating the effectiveness of foam oil generation in the present invention includes a digital flow type peristaltic pump I 1, a digital flow type peristaltic pump II 2, a digital flow type peristaltic pump III 3, a gas flow meter I 4, and a gas flow meter III 5. Test bench 6. Gas supply hose III 7. Ferrule joint 8. Sealed connection joint 9. Small diameter needle 10. Non-contact ultrasonic continuous liquid level sensor 11. Experimental container 12. Container cover 13. Large diameter needle 14. Video camera 15, air supply hose II 16, gas flow meter II 17, air supply hose I 18, middle diameter needle 19, test control board 20, main switch 21, computer 22, wherein said digital flow type peristaltic pump I 1. Air supply hose I 18, ferrule joint 8, sealed connection joint 9 and large-diameter needle 14 are ...
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Abstract
The invention relates to an apparatus for evaluating the foam oil generation validity, and a method thereof, and belongs to the technical field of petroleum chemical engineering. The apparatus comprises a digital flow peristaltic pump, a gas flow meter, a sealed connection joint, a small-aperture syringe needle, a non-contact ultrasonic continuous liquid level sensor, an experiment container, a large-aperture syringe needle, a medium-aperture syringe needle, a test control panel and a computer, wherein the digital flow peristaltic pump, a gas supply flexible tube, the sealed connection joint and the syringe needles with different apertures are sequentially connected to form a gas feed experiment branch pipeline, and the digital flow peristaltic pump, the gas flow meter, the non-contact ultrasonic continuous liquid level sensor, the test control panel and the computer form a test control portion. The apparatus has the advantages of simple structure and convenient operation, and the apparatus and the method simultaneously have the advantages of realization of the automatic measurement and control of the computer, visualization of the generation, expansion and disappearance processes of foam oil, evaluation of the stability, the expansion and the gas capture ability of the foam oil, and practicability and capability of evaluation of the oil production enhancing mechanism of the foam oil.
Description
technical field [0001] The invention relates to a device for evaluating the effectiveness of foam oil generation, which belongs to the technical field of petrochemical industry. Background technique [0002] China, Canada and Venezuela are rich in heavy oil resources. The oil produced during depressurization and cold recovery of some heavy oil reservoirs is in a continuous foam state, and the crude oil contains a large number of stable small bubbles. People call the above crude oil foam oil. The reason for foamy oil is that when the formation pressure is lower than the bubble point pressure, the dissolved bubbles escaping from the crude oil are not directly aggregated to form a continuous gas phase, but dispersed in the form of small bubbles because the viscous force of the heavy oil is greater than the gravity. caused by crude oil. A large number of production practices have shown that due to the existence of foamy oil, this type of reservoir has a slower rate of increas...
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