A device and method for online measurement of gas injection crude oil volume coefficient and solubility

A technology of volume coefficient and solubility, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of bulky, high instrument prices, and high prices, and achieve the effect of improving automation, high precision, and ensuring accuracy
CN105759015BActive Publication Date: 2019-01-18SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2019-01-18

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Abstract

The invention discloses a device for online measurement of a gas injection crude oil volume factor and solubility.The device comprises a gas supply system, a buffer system, a testing system, a gas phase analysis system and a data collection system.The gas supply system comprises a gas cylinder.The buffer system comprises a high pressure buffer container.The buffer container is connected with a gas cylinder high pressure reaction container.The testing system comprises a high pressure reaction container and a temperature controller arranged on the high pressure reaction container.The gas phase analysis system comprises a gas chromatograph.The data collection system comprises a computer, a data collector and a temperature sensor, a pressure sensor and a liquid level sensor which are arranged on the high pressure reaction container.The invention further discloses a method for online measurement of the gas injection crude oil volume factor and solubility.Online testing of PVT data of crude oil before and after gas injection can be achieved, the measured PVT data is utilized for working out the crude oil volume factor and solubility parameters, and convenience and rapidness are achieved.
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Description

technical field

[0001] The invention relates to a test device in the technical field of oil recovery in oilfields, in particular to a device and method for on-line measurement of the volume coefficient and solubility of gas-injected crude oil. Background technique

[0002] Thermal oil recovery (steam huff and puff and steam flooding) is to inject a certain amount of gas into the formation from the oil casing annulus of the oil well. Crude oil is easy to extract. After half a century of research and application, thermal oil recovery technology is recognized as one of the most feasible and effective methods. Before the actual industrial application of thermal oil recovery, it is necessary to use the PVT instrument to measure the physical properties of crude oil, such as the solubility of gas in crude oil, volume coefficient, viscosity and other parameters. The value of PVT testing of crude oil is that it can provide parameters for steam injection operations in reservoirs, pr...

Claims

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