A device for separating water-gas mixture

 

(57) Abstract:

The invention relates to the oil industry, in particular, to methods for transporting and separating the products of oil wells in the collection, preparation and transportation of oil. Provides increased speed and quality of cleaning oil. The inventive device consists of a pipe made of diameter dTr>2/2,61, containing the input, middle and output sections. The middle portion of the filled beam longitudinally oriented thin pipes. The output section contains the nodes of the sampling fractions for gas, oil and water. To n holes formed on diametrically opposite forming the side surface of the input section of the pipeline in increments of lW1/lge attached nozzles with waveguide flanges length ln/4 and a diameter of dn>2/3,41, containing dielectric radiotransparent sealing inserts length (ln- dn/2)ldlnwith a tapered bore from the side flange depth 0h<l, the angle at the vertex 0<90and base diameter 0din<d. To waveguide flanges connected n generators of super-high frequencies (UHF). Waveguide flanges of the pipes, is deployed relative to each other along the axis of the nozzle angle = 90where n is an integer 1,2,3. ..; - wavelength signal generator microwave; - damping coefficient of the electromagnetic wave in the pipe with water-gas emulsion. 2 Il.

The invention relates to the oil industry, in particular to methods for transporting and separating the products of oil wells in the collection, preparation and transportation of oil.

It is known a device for separating water-gas mixture, ( see directional depositor design time Vniisptneft. Survey information. A series of Petroleum engineering. Improving the process of oil separation and collection of oil gas fields in Western Siberia. - M.: VNIIEM, 1979, page 23), consisting of inclined depositor, through which pass water-gas mixture, and units of selection are separated phases of oil.

The prototype of the invention is a Device for separating water-gas mixture" (see the book of the hydrographic system of Latushkin. Collection and preparation of oil, gas and water. - M.: Nedra, 1979, page 143, Fig. 52), consisting of a pipeline containing three sections - input, middle and output, the middle portion of the filled longitudinally oriented thin beam pipe, the outlet pipe is made sloping and contains nodes selection faction is built cleanup of oil due to the high viscosity and strong intermolecular bonds in gazoochistnoe mixture.

Solved the technical problem is to improve the speed and quality of cleaning oil.

Solve the technical problem in the device for separating water-gas mixture, consisting of a pipeline containing three sections - input, middle and output, while the middle portion of the pipe filled with longitudinally oriented thin beam pipe, the output pipe section contains the nodes of the sampling fractions of the water-gas mixture, is achieved by the fact that the input section of the pipeline, with a diameter of dTr>2/2,61 through n of holes formed on diametrically opposite forming its lateral surface with a stepW1/lge by n nozzles with waveguide flanges length ln/4 and a diameter of dn>2/3,41, containing dielectric radiotransparent sealing inserts length (ln-dn/2)ldlnwith a tapered bore from the side flange depth 0h<l, the angle at the vertex 0<90and base diameter 0din<dconnected n generators of super-high frequencies, with waveguide flanges of pipes placed on diametrically opposite forming the side surface of the inlet pipe of the pipeline razvernutye microwave generators, the attenuation coefficient of the electromagnetic wave in the pipe with water-gas emulsion.

In Fig. 1 shows a device for separating water-gas mixture.

In Fig. 2 shows a cross-section of pipe with fittings and dielectric radiotransparent sealing liners.

The device (Fig. 1, 2) consists of a pipe 1 made of diameter dTr>2/2,61, containing the input section 2, the middle portion 3 and the outlet pipe 4. The middle portion 3 of the pipe 1 is filled by the beam longitudinally oriented thin tube 5, and the output section contains the nodes of the sampling fractions for gas 6 oil 7 and water 8. To n holes 9 made by forming diametrically opposite side surface of the inlet pipe 2 pipe 1 in increments of lW1/lge attached nozzles 10 with waveguide flanges 11 of length ln/4 and a diameter of dn>2/3,41, containing dielectric radiotransparent sealing liners 12 length (ln-dn/2)ldlnwith a conical recess 13 from the side of the flange 11 depth 0h<l, the angle at the vertex 0<90and base diameter 0din<d. To waveguide flanges 11 connected n geonetworking forming a side surface of the inlet pipe 2 pipe 1 is deployed relative to each other along the axis of the pipe 10 angle = 90where n can take the values n= 1, 2, 3.....

Consider the proposed device in the work.

Water-gas mixture from the wells to the input of the pipeline 1 at its input section 2 and flows past the holes with pipe 10, where in the pipeline 1 is supplied to the electromagnetic microwave (MW) energy. Minimum cross-section of the pipe 1 and the branch pipe 10 is limited by the condition of existence in an empty pipe of the lower modes of vibration of electric and magnetic waves H11and E01and is dTr>2/2,61.

The separation into different fractions gazoochistnoe mixture in the pipe occurs under the action of gravitational forces when the unperturbed laminar flow of fluid along it. This process when exposed to microwave energy for the water-gas mixture is accelerated by heating to 60-80oAnd the weakening of the intermolecular bonds in the water-gas mixture under the influence of an intense electromagnetic field.

The nozzle 10 with the flanges 11 and dielectric liners 12 perform the role of matching microwave transitions from the generators to the pipeline 1. Sealing radiotransparent dielectric liners 12 with a conical recess 13 are eye-range of changes in the composition of the water-gas mixture, filling the pipeline 1. The length of the pipe 10 is selected as the implementation of a matching transition from the generator 14 to the pipe 1, for example a quarter-wave transition ln/4, and its diameter is determined by the condition of its existence, the main type oscillations of the electromagnetic wave H11dn>2/3,41. The pipe 10 must be filled radiotransparent dielectric liner 12 so that the pipe 10 would not remain stagnant oil, and microwave energy would interact with running water-gas emulsion in the pipeline 1, which is guaranteed if the length of the dielectric radiotransparent sealing liner 12 ldequal (ln-dn/2)ldln. The implementation of the matching device on the basis of the dielectric liner 12 is carried out by means of a tapered undercut 13, providing a smooth transition from air, inlet pipe 10, to the water-gas mixture in the pipeline 1. This should not disrupt the integrity of the pipe 10. This is achieved when the depth of the undercut 13 h, is equal to 0h<lconical in shape with the angle at the vertex 0<90and base diameter 0din<d.

The uniformity of heating of the mass of oil is STI to minimize convection transverse motion of the fluid, caused by the heterogeneity of the distribution of the temperature field. Under these conditions, under the action of gravitational forces most effectively is the delamination of the oil mixture.

To implement such a heat flow of the mixture in the pipe 1 in the cross section of the pipe you need to create a more uniform distribution of the electromagnetic field. For this waveguide flanges 11 of the nozzle 10 on the opposite lateral surfaces of the tubes are expanded relative to each other along the axis of the nozzle 10 on the 90o. This provides conditions for the excitation of the orthogonal types of waves (E and H types). Improving the uniformity of distribution of electromagnetic energy in the cross section of the pipe 1, and is provided by the polarization separation generators ultra-high frequency (UHF) 14 placed against each other. Isolation of generators 14, spaced along the generatrix of the inlet pipe 2 pipe 1, is ensured by the choice of the interval - lWbetween the holes 9 on the side surface of the input part of the pipeline 2 lW1/lge, when this limit is guaranteed field weakening neighboring generator 14 at a distance of lWnot less than 10 dB. This will protect the generators 14, SS="ptx2">

Further, the heated flow of oil takes place in the middle part of the pipe 3 through the beam longitudinally oriented thin tube 5. In thin tubes 5 small gas bubbles and globules of water merge into a larger education and at the outlet of the middle section 3 of the pipe 1 are merged into streams separate factions in the output section of the pipeline 4, make the selection of the separated fractions.

Tests of the experimental setup showed that the use of microwave heating reduced the cleaning time of oil in two and a half three times and this has increased the quality of cleaning oil, which comes up to 40-50 mg/l of oil, compared 70-100 mg/l in the prototype.

A device for separating water-gas mixture, consisting of a pipeline containing three sections - input, middle and output sections, the output section of the pipeline contains the nodes of the sampling fractions of the water-gas mixture, characterized in that the middle section of the pipeline filled longitudinally oriented thin beam pipe, to the input section of the pipeline with a diameter of dTr>2/2,61 through n of holes formed on diametrically opposite forming its lateral surface with a stepW1/lge by n nozzles with waveguide flanges ledisi length (In- dn/2)ldlnwith a tapered bore from the side of the flange, the depth 0h<l, the angle at the vertex 0<90and base diameter 0din<dconnected n generators of super-high frequencies, with waveguide flanges of pipes placed on diametrically opposite forming the side surface of the input section of the pipeline is deployed relative to each other along the axis of the nozzle angle = 90where n is an integer 1,2,3,. . . . ; - wavelength signal generator of ultra high frequency; is the coefficient of attenuation of electromagnetic waves in the pipe with water-gas emulsion.

 

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