CN100460626C - Ultrasonic crude oil, gas, sand separation device - Google Patents

Abstract

The invention relates to an ultrasonic crude oil, gas, and sand separation device, which is aimed at the process of oil field tertiary extraction in the petroleum industry, and is used for the extraction of crude oil from the ground before it enters the measuring instrument or pipeline network for collection and transportation of water vapor, natural gas, etc. It is a pre-treatment equipment for ultrasonic degassing of gas and removal of silt and bauxite entrained in crude oil. It will directly enter the crude oil containing impurities such as gas, mud, sand, and bauxite into the separation device tank through the crude oil inlet for three-stage degassing, that is, degassing umbrella, degassing ladder, ultrasonic degassing vibrator plate degassing, degassing The degassed crude oil enters the sediment filter tank through the conical crude oil collector for sediment filtration, and the degassed and desanded crude oil enters the metering system through the oil pump from the crude oil outlet or directly enters the gathering and transportation pipeline network. It improves the efficiency of oil recovery operations, and is suitable for field work. The working temperature is -50°C to 120°C; the degassing efficiency is high, which can reach more than 99%.

Description

Ultrasonic crude oil, gas, sand separation device

Technical Field: The present invention relates to a separation device in the petroleum industry, in particular to an efficient on-line gas and sand separator for separating gas and sand from crude oil during oil collection or oil gathering and transportation.

BACKGROUND OF THE INVENTION: In each oil field, when the underground oil storage is developed to a certain stage, steam injection, oil injection, water flooding and other processes are usually used to collect oil. Regardless of the process, the gas in the crude oil will cause the measurement of the metering device to fail, cavitation will occur in the oil transmission power equipment, and the pipeline will be damaged by the impact of the gas. The sediment and bauxite in the crude oil will cause the power equipment to be stuck, the motor will be burned, the equipment will be shut down, the pipeline will be blocked, and the wear and tear of the pipeline and equipment will be accelerated, which will increase the cost of oil production and operation.

After checking some gas and sand separation equipment in oil collection and related fields, the working principles are nothing more than the following three:

采用压差解析法去除气体，如；真空解析法。

The gas is removed by differential pressure analysis, such as; vacuum analysis.

加热解析法脱气，如：将液体整体升温使气体在液体中溶解度变小，从而达到脱气目的。

Degassing by heating analysis method, such as: raising the temperature of the liquid as a whole to make the solubility of the gas in the liquid smaller, so as to achieve the purpose of degassing.

自然解析脱气法，如：自然静置使液体中悬浮的气体逸出。

Natural analytical degassing method, such as: natural standing to let the gas suspended in the liquid escape.

Among the above three methods, the first kind of equipment and facilities is more complicated, and it is more troublesome to implement, and it is not suitable for the degassing work of scattered oil wells in multiple places. The second method consumes too much energy to implement, and is not suitable for the degassing work of scattered oil wells in multiple places. Even if it is applicable, the investment is too large and the operating cost is too high. The third method cannot meet the needs of socialized large-scale production, that is, the continuous crude oil extraction process cannot be realized.

Invention content:

Purpose of the invention: The present invention provides an ultrasonic crude oil, gas and sand separation device, the purpose of which is to provide a high-efficiency, energy-saving and low-cost oil well that is suitable for setting up scattered oil wells in multiple places, and is suitable for working in the field. Seed gas, sand separation equipment.

Technical solution: the present invention is achieved through the following technical solutions:

An ultrasonic crude oil, gas, and sand separation device, which is mainly composed of a tank body of the separation device, an oil inlet pipe arranged in the tank body of the separation device, a crude oil inlet at the lower end of the oil inlet pipe, and a crude oil outlet connected to the outlet pump at the lower end of the tank body of the separation device It is characterized in that: a degassing umbrella, a degassing ladder, and an ultrasonic degassing vibrator plate are arranged in the tank of the separation device, the upper end of the degassing umbrella and the degassing ladder is arranged on the upper end of the oil inlet pipe, and the ultrasonic wave is arranged under the degassing ladder and the oil inlet pipe. Degassing vibrator plate, ultrasonic degassing vibrator plate is connected with ultrasonic signal generator, degassing umbrella, degassing ladder, ultrasonic degassing vibrator plate and oil inlet pipe form a three-stage degassing structure, the lower part of the separation device tank is a conical crude oil collection The outlet of the crude oil collector is connected with the crude oil outlet through the sediment filter tank and the export oil pump; the tank body of the separation device is provided with a heating pipe; the upper part of the tank body of the separation device is an exhaust port.

The degassing umbrella, degassing ladder and ultrasonic degassing vibrator plate are arranged from top to bottom in the tank body of the separation device. The oil inlet pipe is vertically arranged in the tank body of the separation device, and the upper end is the crude oil outlet; the degassing ladder is set around the oil inlet pipe. Spiral structure; the degassing umbrella is in the shape of a folding fan. The ultrasonic degassing vibrator plate is composed of two semi-circular plates on the left and right, and the ultrasonic degassing vibrator plate is horizontally placed in the lower part of the tank body of the separation device, and the vibrator in the ultrasonic vibrator plate emits sound waves in the direction of the exhaust port.

The heating pipe is in the shape of a serpentine, and it is coiled on the outer surface of the conical crude oil collector at the lower part of the tank body of the separation device.

The upper part of the separation device tank is provided with a conical gas collector, and the exhaust port is arranged at the upper end of the conical gas collector; the corresponding conical gas collector at the outlet of the upper end of the oil inlet pipe is provided with an umbrella-shaped baffle.

Advantages and effects: Through the implementation of the technical solution of the present invention, it can well solve the problem that traditional facilities for separating gas and sediment from crude oil are relatively complex, or consume too much energy, or cannot realize continuous crude oil extraction process, and are not suitable for Scattered oil well degassing and desedimentation works in many places often cause damage to gathering and transportation equipment. The invention can well remove the gas and sand in the crude oil, and can obtain better guarantee in terms of metering, transportation and oil quality, and is an indispensable pretreatment equipment in the process of oil collection.

The present invention has the characteristics of high efficiency, energy saving, low-cost operation and decentralized work, and also has the following advantages:

①.Separate and remove the sediment in the crude oil that can block the meter, so that the meter can work normally, and reduce the error of 300% before using the separation device to 0.5%;

②. Separation of water vapor, natural gas and other gases in crude oil can make the production measurement of single oil well more accurate, and the accurate single well production data can accurately judge the downhole oil storage status and determine the workover time and other oil well working conditions ;

③. After using the separation device, it is impossible to accurately judge when to inject gas, when to overhaul, etc., so that the time of various tasks can be judged in a timely and accurate manner, and the accuracy rate is increased from the original 30% to more than 95%;

④. Solve the problem of jamming and blocking of meters, oil pumps, pipe networks and other facilities caused by sand and stone in crude oil, and prolong the service life of the system;

⑤. Improve the efficiency of oil recovery operations and reduce the cost of oil recovery by about 10% to 15%;

⑥.Suitable for field work Working temperature - 50 ℃ ~ 120 ℃ can work;

⑦. High degassing efficiency, which can reach more than 99%;

⑧. The effect of removing sediment is good, and there is no meter, pump jamming and pipeline blockage;

⑨. The separation device has good energy-saving effect, low operating cost, and the energy consumption of the whole machine is 500W, which is far lower than that of similar products; it occupies a small area, and the system has no transmission equipment, which avoids complicated maintenance, no leakage, and does not pollute the environment .

BRIEF DESCRIPTION OF THE DRAWINGS: Accompanying drawing 1 is a structural schematic diagram of an ultrasonic crude oil, gas, and sand separation device of the present invention;

Accompanying drawing 2 is the schematic diagram of the side view structure of the ultrasonic degassing vibrator plate of the present invention;

Accompanying drawing 3 is the structural schematic diagram of the top view of the ultrasonic degassing vibrator plate of the present invention;

Accompanying drawing 4 is the structural representation of degassing umbrella of the present invention;

Accompanying drawing 5 is the partial cut-away structural diagram of the degassing umbrella of the present invention.

Detailed ways:

The present invention is aimed at performing ultrasonic fine degassing work on water vapor, natural gas and other gases contained in crude oil and degassing the crude oil contained in crude oil before the crude oil is extracted from the ground and enters into measuring instruments or pipeline network collection and transportation Pretreatment equipment for removing entrained sediment and bauxite.

The equipment includes a separation device tank body, a three-stage degassing structure composed of a degassing umbrella 13 inside the separation device tank body, a degassing ladder 12, an ultrasonic degassing vibrator plate 10 and an oil inlet pipe 14, and the lower part of the separation device tank body 4 is equipped with The conical crude oil collector 5, the sediment filter tank 8, the oil pump 7 and the crude oil outlet 6 are composed of a desilting structure; a snake-shaped heating pipe 3 is installed on the tank body 4 of the separation device; The exhaust port 1 is arranged on the shaped gas collector 2; the lower part of the separation device tank body 4 is connected with the conical crude oil collector 5 sediment filter tank 8 crude oil outlet 6 oil pump 7; the inner center of the separation device tank body 4 is equipped with a 11 The degassing umbrella 13 and the degassing ladder 12 that are connected to and supported by the oil inlet pipe 14. The degassing umbrella 13 degassing ladder 12 ultrasonic degassing oscillator plate 10 in the tank body 4 of the separation device is arranged from top to bottom, and the crude oil is also degassed from top to bottom, and the degassing umbrella 13 is in the shape of a folding fan. The ultrasonic degassing vibrator plate 10 is composed of two left and right semicircular annular plates, and the ultrasonic degassing vibrator plate 10 is placed horizontally at the lower part of the tank body 4 of the separation device. The direction in which the vibrator 17 in the ultrasonic vibrator board 10 emits sound waves points to the direction of the exhaust port 1 .

This equipment is to directly enter the crude oil containing impurities such as gas, mud, sand, and bauxite into the tank of the separation device through the crude oil inlet for three-stage degassing, namely degassing umbrella, degassing ladder, ultrasonic degassing vibrator plate degassing , the degassed crude oil enters the sediment filter tank through the conical crude oil collector for sediment filtration, and the degassed and desanded crude oil enters the metering system from the crude oil outlet through the oil pump or directly enters the gathering and transportation pipeline network.

The present invention is described below in conjunction with the accompanying drawings, but the present invention is not limited by specific embodiments.

Example 1:

In the figure: 1. Exhaust port; 2. Conical gas collector; 3. Serpentine heating pipe; 4. Separation device tank; 5. Conical crude oil collector; 6. Crude oil outlet; 7. Oil pump; 8 , mud and sand filter tank; 9, ultrasonic signal generator; 10, ultrasonic degassing vibrator plate; 11, crude oil inlet; 12, degassing ladder; 13, degassing umbrella; 14, oil inlet pipe; 15, baffle plate.

As shown in accompanying drawing 1, a kind of ultrasonic crude oil of the present invention, gas, sand separation device, it is mainly by separation device tank body 4, the oil inlet pipe 14 that is provided with in the separation device tank body 4, the crude oil inlet 11 of oil inlet pipe 14 lower ends, The crude oil outlet 6, which is located at the lower end of the separator tank 4 and connected to the outlet oil pump 7, is composed of a degassing umbrella 13, a degassing ladder 12, an ultrasonic degassing vibrator plate 10, a degassing umbrella and a degassing The upper end of the ladder is set on the upper end of the oil inlet pipe 14, and the ultrasonic degassing vibrator plate 10 is arranged under the degassing ladder and the oil inlet pipe. Gas structure, the lower part of the tank body 4 of the separation device is a conical crude oil collector 5, the outlet of the crude oil collector 5 communicates with the crude oil outlet 6 through the sediment filter tank 8 and the export oil pump 7; the tank body 4 of the separation device is provided with a heating pipe 3 ; The upper part of the separation device tank body 4 is an exhaust port. The degassing umbrella 13, degassing ladder 12 and ultrasonic degassing vibrator plate 10 are arranged from top to bottom in the tank body 4 of the separation device. An umbrella-shaped baffle 15 is provided on the top, as shown in Figures 4 and 5, the degassing umbrella 13 is in the shape of a folding fan. The ultrasonic degassing vibrator plate 10 is composed of two semicircular annular plates on the left and right, and the ultrasonic degassing vibrator plate 10 is horizontally placed in the lower part of the tank body 4 of the separation device, as shown in Figures 2 and 3, the vibrator in the ultrasonic vibrator plate 10 17 The sound wave emission direction points to the direction of the exhaust port 1, and the ultrasonic vibrator board 10 is connected to the external ultrasonic signal generator 9. The heating pipe 3 is in the shape of a serpentine, and it is coiled on the outer surface of the conical crude oil collector 5 at the bottom of the tank body 4 of the separation device. The exhaust port on the upper part of the separation device tank body 4 is formed by setting the exhaust port 1 at the upper end of the conical gas collector 2 .

When using the separation device of the present invention to process crude oil, the crude oil produced underground enters the oil inlet pipe 14 in the tank body 4 of the separation device through the crude oil inlet 11, and the crude oil is sprayed onto the baffle plate 15 along the oil inlet pipe 14 and falls back to degassing On the umbrella 13, the folding fan texture on the degassing umbrella 13 makes the crude oil flow outward along the radial direction of the umbrella to the degassing ladder 12, and the degassing ladder 12 guides the oil to the ultrasonic degassing vibrator in the lower part of the separator tank 4 On the plate 10, and form a certain liquid level, the ultrasonic degassing vibrator plate 10 generates a strong ultrasonic cavitation field under the action of the ultrasonic signal generator 9, completely separates the dissolved gas and suspended gas in the crude oil, and the separated gas, The conical gas collector 2 on the upper part of the separation device tank body 4 is collected to the exhaust port 1 for unified recovery, and the degassed crude oil enters the sediment filter tank 8 through the conical crude oil collector 5 for sediment separation, and then Then through the oil pump 7 and the crude oil outlet 6, it enters into the metering device or the pipeline network.

In order to obtain efficient and stable working conditions, the inventor used the following measures during the implementation of manufacturing design;

(1). The baffle is directly fixed on the conical gas collector to prevent the baffle from falling off due to oil impact;

(2). The degassing umbrella is fixed on the oil inlet pipe, and the diversion umbrella is made into a fan texture to guide the oil flow without reducing the degassing area;

(3). Crude oil flows down from the circumference of the degassing umbrella into the degassing ladder. The degassing ladder is fixed on the oil inlet pipe and guides the oil to flow down in a spiral shape, which further increases the precipitation time of the gas in the oil and expands the analysis of the gas in the oil. area;

(4). The ultrasonic degassing vibrator plate installed in the lower part of the tank of the separation device is made into two ring shapes, which is convenient for installation and maintenance, and can completely separate the gas trapped in the crude oil at the same time;

(5). The conical crude oil collector is made into a conical shape to facilitate the flow of thicker crude oil to increase the filtration of mud and sand;

(6). In the lower part of the tank of the separation device, a snake-shaped heating tube is installed on the tank, which can be heated by electricity or by steam to prevent the oil in the tank from condensing;

To sum up, the ultrasonic crude oil gas and sand separator of the present invention does not use transmission equipment, so there is no maintenance problem of wearing parts, and the internal structure is safe and reliable during more than three years of use, and the equipment operates stably.

Claims (5)

1. a ultrasonic crude-oil, gas, sand separating device, it is mainly by separator tank body (4), the oil inlet pipe (14) that is provided with in the separator tank body (4), the crude oil import (11) of oil inlet pipe (14) lower end is located at crude exports (6) formation that separator tank body (4) bottom is connected with outlet oil pump (7); It is characterized in that: be provided with degassing umbrella (13) in the separator tank body (4), degassing ladder (12), ultrasonic degas oscillator plate (10), degassing umbrella and degassing ladder upper end are arranged on the upper end of oil inlet pipe (14), below degassing ladder and the oil inlet pipe ultrasonic degas oscillator plate (10) is set, ultrasonic degas oscillator plate (10) is connected with ultrasonic signal generator (9), degassing umbrella (13), degassing ladder (12), ultrasonic degas oscillator plate (10) and oil inlet pipe (14) are formed three grades of degassing structures, separator tank body (4) bottom is the former oil interceptor of taper (5), and the outlet of former oil interceptor (5) is communicated with crude exports (6) through silt filtering tank (8) and outlet oil pump (7); Separator tank body (4) is provided with heating tube (3); Separator tank body (4) top is provided with exhaust opening.

2. according to right 1 described a kind of ultrasonic crude-oil, gas, sand separating device, it is characterized in that: degassing umbrella (13), degassing ladder (12) and ultrasonic degas oscillator plate (10) are provided with from top to bottom in the separator tank body (4), oil inlet pipe (14) vertically is arranged in the separator tank body (4), and its upper end is crude exports; The helicoidal structure of degassing ladder (12) for being provided with around oil inlet pipe (14); Degassing umbrella (13) is the folding fan shape.

3. according to right 1 described a kind of ultrasonic crude-oil, gas, sand separating device, it is characterized in that: ultrasonic degas oscillator plate (10) by about two blocks of semi-round ring shape plates form, and ultrasonic degas oscillator plate (10) level is placed in the bottom in the separator tank body (4), and oscillator (17) the emission sound wave direction in the ultrasonic oscillator plate (10) is pointed to exhaust opening (1) direction.

4. according to right 1 described a kind of ultrasonic crude-oil, gas, sand separating device, it is characterized in that: heating tube (3) is the snake dish type, and it is coiled on the external surface of the former oil interceptor of separator tank body (4) lower taper (5).

5. according to right 1 described a kind of ultrasonic crude-oil, gas, sand separating device, it is characterized in that: the top of separator tank body (4) is provided with conical gas gatherer (2), and exhaust opening (1) is arranged on the upper end of conical gas gatherer (2); The conical gas gatherer (2) of exit, oil inlet pipe upper end correspondence is provided with umbrella deflection plate (15).

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