CN1261366C - Integrated oilfield production fluid separation and sewage treatment device - Google Patents

Abstract

The present invention provides an integrated oil field producing liquid separating and sewage processing device, comprising a cylindrical horizontal pot, a cyclone arranged in the pot, a labyrinth rectification board, a corrugated board, an inclined plate, an oil overflow weir board, a radio frequency admittance measuring instrument, an air outlet cylinder, an oil absorption chamber, an oil chamber, a modified polypropylene ball, a hydraulic sand cleaning apparatus, a medicine adding pipe, a mixing device, a water outlet, a pump cycling oil absorption opening and an oil outlet. The present invention is characterized in that the upper part of the left end of the cylindrical horizontal pot is provided with a swirl type gas-liquid segregator. The middle part of the cylindrical horizontal pot is provided with an oil distributing apparatus below the gas-liquid segregator in which a polypropylene ball is arranged. The labyrinth rectification board, the corrugated board, a modified organic inclined plate, a small oil distributing apparatus, the modified organic inclined plate, a water outlet chamber, an oil absorption cavity, and an oil storage chamber are arranged in turn on the right side of the oil distributing apparatus. The upper top of the small oil distributing apparatus, a big modified organic inclined plate and the oil absorption chamber is provided with an oil overflow weir board. The right end of the cylindrical horizontal pot is provided with an air filtering cylinder. A hydraulic sand cleaning and discharging apparatus is arranged at the bottom of the pot between the oil distributing apparatus and the small oil distributing apparatus. The bottom sides of the water outlet chamber, the oil absorption chamber and the oil chamber are respectively provided with the water outlet, the oil absorption opening and the oil outlet.

Description

Integrated oilfield production fluid separation and sewage treatment device

1. Technical field

The invention relates to an integrated oilfield production liquid separation and sewage treatment device used in a high water content oilfield oil gas water treatment station.

2. Background technology

Shengli Oilfield is in the late stage of oilfield development, and the water content of the produced fluid has been increasing, reaching an average of over 90%, and the oil-gas ratio is low, with an average oil-gas ratio of about 10. The process of oil and water treatment has not been greatly improved. Crude oil treatment and sewage treatment are set up separately. The sewage separated from the oilfield production fluid is then treated by the sewage treatment process. Such oilfield production fluid oil, gas, water and sand separation and sewage treatment process is complicated. , inconvenient management, large floor area, high investment, and directly affect the quality of oil and water treatment.

3. Contents of the invention

The purpose of the present invention is to provide an integrated oilfield production fluid separation and sewage treatment device, which overcomes the above-mentioned existing technical defects, simplifies the existing process, facilitates management, improves the quality of oil and water treatment, and saves floor area and investment.

Technical scheme of the present invention is realized in the following manner:

The invention consists of a cylindrical horizontal tank, a swirling gas-liquid separator arranged outside the tank, a labyrinth rectifying plate, a corrugated plate, an inclined plate, an oil overflow weir plate, a radio frequency admittance detector, a gas outlet cylinder, and an oil collector. Cavity, oil storage room, modified polypropylene pellets, hydraulic sand washing device, dosing pipe, mixer, water outlet, pump circulation oil collection port, oil outlet, characterized in that the left end of the cylindrical horizontal tank There is a swirling gas-liquid separator vertically on the upper part, and an oil distributor is installed in the middle of the lower cylindrical horizontal tank, which contains polypropylene balls. On the right side of the oil distributor, there are labyrinth rectifying plates and corrugated plates in sequence. , the first modified organic inclined plate, the small oil distributor, the second modified organic inclined plate, the water outlet chamber, the oil collection chamber and the oil storage chamber, the small oil distributor, the second modified organic inclined plate and the oil collection chamber There is an oil overflow weir plate on the upper top of the tank, an air filter tube is installed at the right end of the cylindrical horizontal tank, and a hydraulic sand discharge device is installed at the bottom of the tank between the oil distributor and the small oil distributor. A water outlet, a pump circulation oil collection port and an oil outlet are respectively provided at the bottom of the water outlet chamber, the oil receiving chamber and the oil storage chamber.

At the bottom of the cyclone gas-liquid separator, there is vertically a T-shaped or a rice-shaped or a cross-shaped oil distribution pipe passing through the oil distributor. The lower part of the oil distribution pipe is provided with a liquid outlet hole.

The oil distributor is composed of an upper plate, a lower plate and a rear plate. The upper and lower plates are welded horizontally on the tank wall of the cylindrical horizontal tank and vertically welded together with the rear plate. The upper plate, the lower plate and the rear plate are provided with a number of small holes smaller than the diameter of the modified polypropylene pellets.

The labyrinth rectifying plate is composed of several weir plate groups parallel to the rear plate of the oil distributor to form upper, lower, upper and lower flow channels.

The corrugated plates are interleaved vertically and vertically and hung horizontally in the middle of the horizontal tank layer by layer. The corrugations between the plates are in the vertical direction to form a corrugated plate group. In the middle, a sloping plate group is formed, and its spacing and inclination can be adjusted according to the water quality to achieve the best operating effect.

The small oil distributor is composed of two left and right plates and an upper top weir plate. The left and right plates are welded vertically on the front and rear tank walls. The left and right plates are covered with holes smaller than the diameter of modified polypropylene balls.

On the left side of the small oil distributor, there is a dosing standpipe parallel to the left plate. The standpipe passes through the bottom of the tank vertically as a dosing port and connects with the dosing pipeline. The standpipe is covered with medicine outlet holes.

There are manholes on the top of the tank between the labyrinth rectifying plate and the corrugated plate and the top of the tank on the left side of the small oil distributor, respectively, and ladders are respectively provided at the lower part of the manholes.

There is a radio frequency admittance detector installation port on the tank roof on the right side of the manhole on the left side of the small oil distributor.

Compared with the prior art, the present invention has a simple and reasonable structure. One integrated device replaces the two sets of processes of oil-gas-water separation and sewage treatment, which simplifies the process, saves equipment, saves floor space, saves investment, and facilitates management. The quality of oil, gas and water treatment is improved, so that the water content of crude oil is ≤20%, the oil content of gas is ≤5g/m ³ , the oil content of treated sewage is ≤20mg/l, the suspended matter is ≤20mg/l, and the particle diameter of suspended matter is ≤3μm.

4. Description of drawings

Fig. 1-Structure schematic diagram of the present invention

1-Cylindrical horizontal tank 2-Cyclone gas-liquid separator 3-Labyrinth rectifier plate 4-Oil distributor 5-Corrugated plate 6-Hydraulic sand washing device 7-First and second modified organic inclined plates 8-manhole 9-radio frequency admittance installation port 10-oil overflow weir plate 11-small oil cloth device 12-dosing pipe 13-mixer 14-oil collection chamber 15-air outlet filter cartridge 16-air outlet 17-outlet Water port 18- pump circulation oil receiving port 19- oil outlet 20- oil storage room

5. Embodiment

In order to further disclose the technical solution of the present invention, in conjunction with the accompanying drawings, the detailed description is given through the examples:

The present invention consists of a cylindrical horizontal tank 1, a swirling gas-liquid separator 2 arranged inside and outside the tank, a labyrinth rectifying plate 3, an oil distributor 4, a corrugated plate 5, a hydraulic sand washing and sand discharging device 6, a modified organic inclined Plate 7, manhole 8, radio frequency admittance installation port 9, oil overflow weir plate 10, small oil distributor 11, dosing pipe 12, mixer 13, oil collection chamber 14, air outlet filter cartridge 15, air outlet 16, The water outlet 17, the pump circulation oil receiving port 18, the oil outlet 19, and the oil storage chamber 20 are composed. It is characterized in that a swirl type gas-liquid separator 2 is vertically arranged on the upper part of the left end of the cylindrical horizontal tank, and an oil distributor 4 is arranged in the middle of the lower cylindrical horizontal tank 1, and an oil distributor 4 is arranged sequentially on the right side of the oil distributor. There are labyrinth rectifying plate 3, corrugated plate 5, modified organic inclined plate 7, small oil distributor 11, modified organic inclined plate 7, water outlet chamber A, oil collection chamber B and oil storage chamber 20, in the small oil distributor 11 1. An oil overflow weir plate C is provided on the upper top of the modified organic inclined plate 7 and the oil collection chamber B, and an air filter tube 15 is provided on the upper right end of the cylindrical horizontal tank. The bottom of the tank between them is provided with a hydraulic sand discharge device 6, and the bottoms of the water outlet chamber A, the oil collection chamber B and the oil storage chamber 20 are respectively provided with a water outlet 17, an oil collection port 18 and an oil outlet 19, Modified polypropylene balls are installed in the oil distributor and small oil distributor. In the application, the oilfield production fluid containing oil, gas, water and sand enters the cyclone separator tangentially from the inlet of the cyclone separator, rotates at high speed in the large conical tube, and initially separates the oil, gas, water and sand, and the gas enters the filter cartridge from the top through the pipeline for filtration into the tracheal network. The oil enters the oil distributor, coalesces through the modified polypropylene balls, and the separated water and sand flow to the bottom of the tank. After passing through the oil distributor, the remaining mixed liquid enters the labyrinth rectifying plate through the small hole on the right side for further degassing and dehydration, and comes out Enter the corrugated plate for further dehydration, and then enter the modified organic inclined plate for dehydration. The water from the two plates flows to the bottom of the tank, and the oil continues to flow to the right. The oil on the top of the tank enters the oil storage chamber 20 through the weir plate C, and the oil-water mixture in the middle enters the small The oil distributor, when entering the small oil distributor, the oil-in-water demulsifier is added from the dosing standpipe, the crude oil in the water is continuously extracted, and the modified polypropylene balls are re-coalesced, and then the oil is deoiled through the inclined plate, and the oil is removed. The oil enters the oil collection chamber B and is pumped out through the pump circulation oil collection port, and then enters the cyclone gas-liquid separator 2 for further processing. The separated water enters and exits the water chamber A, enters the sewage reinjection system through the water outlet, the oil in the oil chamber enters the next treatment system through the oil outlet, and the separated sand is discharged through the hydraulic sand discharge device. In the operating condition of the present invention, the radio frequency admittance device and the automatic detection device control the oil-water interface and detect the oil-water treatment effect.

Claims (8)

1, a kind of integrated form oil field mining liquid separates and waste disposal plant, this device is reached the whirlwind-type gas-liquid separator that is provided with inside and outside jar by the cylinder horizontal tank, the labyrinth cowling panel, waved plate, swash plate, oil spill stream weir plate, the radio frequency admittance detector, gas outlet, oil-collecting cavity, accumulator, the modified polypropene bead, the hydraulic sand washing sand removing device, chemical feed pipe, mixing tank, water outlet, pump circulation receiving port and oil outlet are formed, it is characterized in that being provided with a whirlwind-type gas-liquid separator in the upper vertical of cylinder horizontal tank left end, be provided with oil distributor in the middle part of cylinder horizontal tank down at it, interior dress polypropylene pellets, be provided with the labyrinth cowling panel on oil distributor the right by preface, waved plate, the organic swash plate of first modification, small oil distributing, the organic swash plate of second modification, water-supplying chamber, oil-collecting cavity and accumulator, at small oil distributing, the upper top of organic swash plate of second modification and oil-collecting cavity is provided with an oil spill stream weir plate, be provided with a filter inflator in the right part of cylinder horizontal tank, this filter inflator links to each other with whirlwind-type gas-liquid separator top by pipeline, pot bottom between oil distributor and small oil distributing is provided with the hydraulic sand washing sand removing device, in water-supplying chamber, the base of receiving grease chamber and grease chamber is respectively equipped with water outlet separately, pump circulation receiving port and oil outlet.

2, integrated form oil field mining liquid according to claim 1 separates and waste disposal plant, it is M shape or criss-cross cloth oil pipe that the bottom vertical that it is characterized in that the whirlwind-type gas-liquid separator is provided with a T-shaped or a bottom of passing oil distributor, and the bottom of cloth oil pipe is provided with the fluid aperture.

3, integrated form oil field mining liquid according to claim 1 separates and waste disposal plant, it is characterized in that oil distributor is made up of upper plate, lower plate and back plate, two plate levels are welded on the tank skin of cylinder horizontal tank up and down, with back plate vertical weld together, its upper plate, lower plate and back plate are provided with some apertures less than the little spherical diameter of modified polypropene.

4, integrated form oil field mining liquid according to claim 3 separates and waste disposal plant, it is characterized in that the labyrinth cowling panel by some be parallel to plate behind the oil distributor be parallel to each other form about, the weir plate group that goes up, go up next runner down forms.

5, integrated form oil field mining liquid according to claim 1 separates and waste disposal plant, it is characterized in that small oil distributing by about two plates and upper top weir plate form, about two plates be vertically welded in before and after on the tank skin, about be covered with hole on two plates less than the little spherical diameter of modified polypropene.

6, integrated form oil field mining liquid according to claim 5 separates and waste disposal plant, the left side that it is characterized in that small oil distributing is provided with the dosing standpipe parallel with left plate, as dosing mouth, link to each other at the bottom of standpipe vertically passes jar, be covered with the drug aperture on the standpipe with dosing pipe.

7, integrated form oil field mining liquid according to claim 1 separates and waste disposal plant, it is characterized in that the tank top between labyrinth cowling panel and the waved plate and the tank top on the small oil distributing left side are respectively equipped with manhole, and the bottom of manhole is respectively equipped with ladder.

8, integrated form oil field mining liquid according to claim 1 separates and waste disposal plant, it is characterized in that the right tank deck of small oil distributing left side manhole is provided with radio frequency admittance detector installing port.

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