Oil and gas interface tension measurement device and method

A technology of oil and gas interface and measuring device, applied in the direction of surface tension analysis, etc., can solve the problems of inflow of oil droplets, inability to effectively drive the flow control box, inability to effectively control the injection of oil droplets, etc.

Active Publication Date: 2019-10-18
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

The inventors found that this method has the problem of rapid pressure breakthrough. When the pressure at the injection end is too low, the flow control box cannot be effectively driven, causing the pressure to be suppressed at the injection end. Once the pressure breaks through, a large number of oil droplets will flow into the
This method cannot effectively control the amount of injected oil droplets

Method used

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  • Oil and gas interface tension measurement device and method

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Embodiment Construction

[0036] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0037] figure 1 A schematic diagram of an oil-gas interfacial tension measuring device according to an exemplary embodiment of the present invention is shown.

[0038] As shown in the figure, the oil-gas interfacial tension measurement device includes:

[0039] Oil-gas interfacial tension measurement unit 1, crude oil supply unit 2, CO 2 Supply unit 3; crude oil supply unit 2 and CO 2 The supply unit 3 is respectively connected to the oi...

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Abstract

The invention discloses an oil-gas interface tension determination apparatus and an oil-gas interface tension determination method. The oil-gas interface tension determination apparatus comprises an oil-gas interface tension determination unit, a crude oil supply unit and a CO2 supply unit, wherein the crude oil supply unit (2) and the CO2 supply unit (3) are respectively connected to the oil-gasinterface tension determination unit (1), and the crude oil supply unit comprises a gas cylinder end pressure gauge, a probe end pressure gauge, a differential pressure flow sample injection pump anda high-pressure liquid-state CO2 gas cylinder. According to the present invention, the oil droplet injection volume can be precisely controlled through the differential pressure sample injection of the crude oil supply unit, such that the stable liquid droplet can be formed at the probe position so as to quantitatively and stably inject the sample; and by using the pre-filled oil-gas balance method, the experimental conditions are close to the formation conditions, such that the interfacial tension test results close to the formation conditions can be obtained.

Description

technical field [0001] The present disclosure relates to interfacial tension measurement technology, and more specifically, to a device and method for measuring oil-gas interfacial tension. Background technique [0002] There are many methods for measuring interfacial tension, mainly including capillary method, detachment method, hanging sheet method, bubble maximum pressure method, pendant drop method and spinning drop method. Among them, the hanging plate method, rotating drop method and pendant drop method are the most widely used. The principle of hanging plate method is to use the balance of interfacial tension and tension, and use the method of direct force measurement, which is suitable for two phases with little difference in density. The measurement of interfacial tension between fluids; the spinning drop method is to put the two-phase fluid into a horizontal tube and rotate at high speed, and use the balance of centrifugal force and interfacial tension to measure i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N13/02
Inventor 王欣吕成远伦增珉王锐赵淑霞王友启王海涛张栋
Owner CHINA PETROLEUM & CHEM CORP
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