CN106768121A - Oil gas water three phase automatic gauge experimental provision - Google Patents

Abstract

The invention relates to a metering device for water flooding experiments, in particular to an oil-gas-water three-phase automatic metering experiment device; in general: it includes a transparent glass cylinder placed on an electronic scale, and a U-shaped feeder is fixed in the transparent glass cylinder. tube; the outlet end of the U-shaped tube for feeding is inserted into the bottom of the transparent glass oil collecting pipe, a scale line is arranged on the outer wall of the transparent glass oil collecting pipe, and a balance floating plate made of foam is set in the middle of the outer wall of the transparent glass oil collecting pipe; During the experiment, put water into the transparent glass cylinder, the liquid level of the water is higher than the outlet end of the feeding U-shaped pipe, and the balance floating plate will center the scale line on the outer wall of the transparent glass oil collecting pipe to 0 scale line under the action of buoyancy. Keep it at the liquid level; the top of the transparent glass oil collecting pipe has a sealing plug, and a gas flowmeter is arranged on the exhaust pipe passing through the sealing plug and communicating with the top of the inner cavity of the transparent glass oil collecting pipe. The advantages of the present invention due to the structure are: the natural separation of oil, gas and water is sufficient, the measurement is accurate and the experimental error is greatly reduced.

Description

Oil-gas-water three-phase automatic metering experimental device

technical field

The invention relates to a metering device for water flooding experiments, in particular to an oil-gas-water three-phase automatic metering experimental device with sufficient separation of oil, gas and water and accurate metering.

Background technique

With the exploration and production of oil and natural gas, the development of oil and gas processing and measurement technology, the accurate measurement of liquid oil and natural gas provides reliable raw data for production monitoring and gas reservoir management. During the water flooding experiment, the high-efficiency oil-gas-water separation metering device plays an important role in collecting the experimental results.

However, the gas-liquid separation metering devices used in existing production tests and in the teaching process of petroleum and natural gas majors generally use the difference in oil-water density and the natural separation of gas. Under specific experimental conditions, there is a problem of insufficient oil-water separation. , which cannot meet the experimental conditions, resulting in errors in the experimental results. In the process of water flooding oil or oil flooding water experiment, affected by the displacement speed, the distribution of oil, gas and water at the outlet of the device is not uniform, there will be columnar oil-water mixed liquid and air bubbles, and there may be foamy oil droplets. Some metering structures simply cannot be accurately metered.

Contents of the invention

The purpose of the present invention is to provide an oil-gas-water three-phase automatic metering experimental device with sufficient separation of oil, gas and water and accurate metering.

The technical solution adopted to achieve the above purpose is as follows, that is, an oil-gas-water three-phase automatic metering experimental device; in general: it includes a transparent glass cylinder placed on an electronic scale, and a feeder U is fixed in the transparent glass cylinder. The inlet end of the feeding U-shaped tube is higher than its outlet end, the inlet end of the feeding U-shaped tube protrudes from the top of the transparent glass tank, and the outlet end of the feeding U-shaped tube is located in the middle of the inner cavity of the transparent glass tank ;

The outlet end of the feeding U-shaped pipe is inserted into the bottom of the transparent glass oil collecting pipe, the outer wall of the transparent glass oil collecting pipe is provided with a scale line, and the middle part of the outer wall of the transparent glass oil collecting pipe is equipped with a balance floating plate made of foam;

During the experiment, put water in the transparent glass tank, the liquid level of the water is higher than the outlet end of the feeding U-shaped pipe, and the balance floating plate will center the scale line on the outer wall of the transparent glass oil collecting pipe to 0 scale line under the action of buoyancy. keep at the liquid level;

There is a sealing plug on the top of the transparent glass oil collecting pipe, and a gas flow meter is arranged on the exhaust pipe passing through the sealing plug and communicating with the top of the inner cavity of the transparent glass oil collecting pipe.

The advantages of the present invention due to the above structure are: sufficient separation of oil, gas and water, and accurate measurement.

Description of drawings

The invention can be further illustrated by the non-limiting examples given in the accompanying drawings.

Fig. 1 is a structural schematic diagram of the present invention.

detailed description

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

Referring to accompanying drawing 1, the oil-gas-water three-phase automatic metering experimental device among the figure; Wherein: comprise the transparent glass cylinder 2 that is placed on the electronic scale 1, in transparent glass cylinder 2, be fixed with a feeding U-shaped pipe 3, this supply The inlet end of the feed U-shaped tube 3 is higher than its outlet end, the inlet end of the feed U-shaped tube 3 protrudes from the top of the transparent glass cylinder 2, and the outlet end of the feed U-shaped tube 3 is located in the middle of the inner cavity of the transparent glass cylinder 2 ;

The outlet end of the feeding U-shaped pipe 3 is inserted into the bottom of the inner cavity of the transparent glass oil collecting pipe 4, and the outer wall of the transparent glass oil collecting pipe 4 is provided with a scale mark 5, and the middle part of the outer wall of the transparent glass oil collecting pipe 4 is covered with foam. The balance floating plate 6;

During the experiment, water is filled in the transparent glass cylinder 2, and the liquid level of the water is higher than the outlet end of the feeding U-shaped pipe 3. 5, the 0 scale line is kept at the liquid level;

There is a sealing plug 7 on the top of the transparent glass oil collecting pipe 4 , and a gas flow meter 9 is arranged on the exhaust pipe 8 passing through the sealing plug 7 and communicating with the top of the inner cavity of the transparent glass oil collecting pipe 4 .

In order to ensure the balance of the transparent glass oil collection pipe 4 on the balance floating plate 6, in the above-mentioned embodiment, preferably: the upper pipe section of the transparent glass oil collection pipe 4 is funnel-shaped with a large upper part and a smaller bottom part. The diameter of the lower pipe section of 4 is the same as the diameter at the smallest diameter of the upper pipe section. The lower pipe section of the transparent glass oil collection pipe 4 is a separation pipe section I10 for separating water from oil and gas, and the upper pipe section of the transparent glass oil collection pipe 4 is oil and gas. Separated separation pipe section II11; the 0 scale line is located at the minimum diameter of the upper pipe section of the transparent glass oil collecting pipe 4; the outlet end of the feeding U-shaped pipe 3 is inserted into the inner cavity of the separation pipe section I10.

In order to ensure that the gas in the medium input by the water flooding experimental device is dissolved in the water of the transparent glass cylinder 2 as little as possible, and further reduce the final experimental error, in the above-mentioned embodiment, preferably: the feed U-shaped pipe 3 The outlet end is inserted into the middle and upper part of the lumen of the separation pipe section I10.

In the foregoing embodiment, during the experiment, after filling water in the transparent glass cylinder 2, the quality M ₁ is read out from the electronic scale 1, and then the inlet end of the feeding U-shaped pipe 3 is connected to the outlet of the water-displacement experimental device. End connection, the medium [the medium is a mixture of water, oil and gas] enters the bottom of the inner cavity of the transparent glass oil collecting pipe 4 through the feeding U-shaped tube 3 [that is, in the separation pipe section I10], and the water and oil and gas are naturally separated [the oil is always on the water surface] , the gas quickly enters the upper part of the inner cavity of the transparent glass oil collecting pipe 4, and the water level in the transparent glass cylinder 2 rises, but under the action of the balance floating plate 6, the 0 scale line in the scale line 5 on the outer wall of the transparent glass oil collecting pipe 4 remains at the liquid level The oil-gas mixture enters the upper part of the inner cavity of the transparent glass oil collecting pipe 4 [that is, in the separation pipe section II11]. The gas is discharged to the atmosphere through the exhaust pipe 8 and is measured by the gas flow meter 9 to obtain V _gas ; when the gas flow meter 9 is not measuring When working, it means that all the separation work is completed. At this time, the mass M ₂ is read from the electronic scale 1, and the mass M of oil and water in the medium is _always M ₂ -M ₁ ;

Read off the scale line 5 to get the oil volume V _oil , M _oil = V _oil × ϱ _oil

In the formula, ϱoil is the density of _oil used in the water flooding experiment;

The quality of water in the medium M _water = M _total - M _oil , the volume of water in the medium V _water = M _water ÷ ϱ _water ;

The mass of gas in the medium M _gas = V _gas × ϱ _gas , where ϱ _gas is the density of gas used in the water flooding experiment.

The above-mentioned structure is simple, each data is extracted accurately during the experiment, and the quality of oil, gas and liquid or other related extended information can be obtained through simple calculation, and oil, gas and water are naturally separated without external energy.

Apparently, all the above-mentioned embodiments are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present invention.

In summary, due to the above structure, the natural separation of oil, gas and water is sufficient, the measurement is accurate and the experimental error is greatly reduced.

Claims (3)

1. a kind of oil gas water three phase automatic gauge experimental provision；It is characterized in that：Including being placed on electronic scale（1）On transparent glass Glass cylinder（2）, in clear glass cylinder（2）In be fixed with a feed U-tube（3）, the feed U-tube（3）Entrance point be higher than its The port of export, feed U-tube（3）Entrance point stretch out clear glass cylinder（2）Top, feed U-tube（3）The port of export be located at it is saturating Bright glass jar（2）Inner chamber middle part；

The feed U-tube（3）The port of export insertion clear glass oil collecting pipe（4）Bottom, in clear glass oil collecting pipe（4）'s Outer wall is provided with graduation mark（5）, in clear glass oil collecting pipe（4）Outer wall middle part be set with the balance kickboard that foam is made（6）；

During experiment, in clear glass cylinder（2）Middle loading water, the liquid level of water is higher by feed U-tube（3）The port of export, the balance Kickboard（6）By clear glass oil collecting pipe under buoyancy（4）Graduation mark on outer wall（5）In 0 graduation mark be maintained at liquid level position Put place；

The clear glass oil collecting pipe（4）Top there is sealing-plug（7）, through sealing-plug（7）And with clear glass oil collecting pipe （4）The blast pipe of inner cavity top connection（8）On be provided with gas flowmeter（9）.

2. oil gas water three phase automatic gauge experimental provision according to claim 1, it is characterised in that：The clear glass collection Oil pipe（4）Upper tubular section be up big and down small funnel-form, the clear glass oil collecting pipe（4）Lower tubular section diameter with thereon Diameter at portion's pipeline section minimum diameter is identical, the clear glass oil collecting pipe（4）Lower tubular section for water and Oil-gas Separation point From pipeline section I（10）, the clear glass oil collecting pipe（4）Upper tubular section be oil with qi leel from separating pipeline section II（11）；Described 0 Graduation mark is located at clear glass oil collecting pipe（4）Upper tubular section minimum diameter at；The feed U-tube（3）The port of export insert Enter to separate pipeline section I（10）Inner chamber in.

3. oil gas water three phase automatic gauge experimental provision according to claim 2, it is characterised in that：The feed U-tube （3）The port of export insertion separate pipeline section I（10）Inner chamber middle and upper part.