Automatic metering device for oil, water and gas three-phase flow

An automatic metering and three-phase flow technology, which is applied in the direction of volume flow measuring device, measuring device, volume metering, etc., can solve the problems of reduced measurement accuracy and achieve the effects of high measurement accuracy, simple structure, and wide viscosity range

Inactive Publication Date: 2008-07-30
兰州金里能源科技有限公司
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Problems solved by technology

[0003] In the existing oil field gas-liquid multiphase flow metering technology, a Chinese patent discloses an "oil and gas automatic metering device" (patent number: ZL 200420041937.5) provides an oil and gas automatic metering device, and has been used in onshore oilfields It has been successfully applied in production. However, the measurement accuracy of the above-mentioned device will be significantly reduced for intermittent incoming liquid, especially for the case of relatively large liquid-gas changes. Therefore, its technology has certain limitations.

Method used

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  • Automatic metering device for oil, water and gas three-phase flow
  • Automatic metering device for oil, water and gas three-phase flow
  • Automatic metering device for oil, water and gas three-phase flow

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Embodiment Construction

[0044] The following describes the utility model further in conjunction with the drawings:

[0045] Such as figure 1 As shown, the gas-liquid mixture enters the cyclone centrifugal separator 3 placed in the gas-liquid separation tank 2 from the gas-liquid inlet pipe 1 through the cyclone separator inlet 31, and the gas-liquid separation is initially realized by the cyclone centrifugal separator 3 ; The gas-containing liquid separated by the cyclone centrifugal tube 32 continues to be centrifuged along the guide separation sleeve 33 under the action of inertia-gravity and centrifugal force, and is scattered down to the gas-liquid separation screen placed at the lower end of the guide separation sleeve 33 35, the liquid sieved by the gas-liquid separation sieve 35 flows down the inner wall of the gas-liquid separation tank 2, and the gas flows up to the exhaust pipe 4 on the top of the gas-liquid separation tank 2, and is thus centrifuged by the cyclone centrifugal separator 3. Sep...

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Abstract

The related flux gauging device for oil-water-gas three phase flow comprises: divided by the flange and pipeline, a separation tank with top connected with a gas-liquid inlet pipe and both top and bottom connected with the control tank top and bottom through a gas-release and liquid-release pipe, a control tank with a floating-ball regulating valve inside and a gas / liquid outlet pipe on top / bottom, a liquid flowmeter, a constituent device, a gas meter on a gas release pipe, and a gas-liquid buffer tank, wherein the gas-release pipe and liquid-release pipe conflux at the confluxing pipe. This invention has measuring precision up to +-0.5~2%, fit to run for long term reliably, and has small size and weight for wide application.

Description

Technical field [0001] The invention relates to an oil field gas-liquid multiphase flow metering device, in particular to a three-phase flow metering device for oil, water and gas. Background technique [0002] The study of multiphase flow measurement in oil fields began in the development of offshore oil fields in the 1970s. Large domestic and foreign oil companies and institutions are committed to the research of multiphase measurement technologies and devices. The research methods involve physical principles and the latest measurement technology. And has developed commercial products. Summarizing its product technology can be divided into non-separated mixed multiphase metering and separated phase metering for oil well produced fluid. The metering products that apply gas-free liquid separation technology use mixed metering technologies such as Venturi, gamma ray, capacitance / inductance correlation method, etc. to perform multi-phase metering. This metering product has low mete...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/74G01F7/00G01F15/08
Inventor 寿焕根
Owner 兰州金里能源科技有限公司
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