SU857232A1 - Method of oil demulsifying - Google Patents

Description

one

The invention relates to the field of primary processing of oil and can be used in oil fields to destroy oil emulsions and separate produced water from oil.

Methods are known for oil de-emulsification, 5 based on the destruction of the oil emulsion in a stream of c. the subsequent settling of water C.

However, their implementation requires a lot of time for the separation of water from oil, for this it requires a large amount of equipment.

There is also known a method for the production of crude oil during primary preparation, which involves the inversion of the phases of the emulsion, followed by separation of water, while the surface-active substance (0TAB) is introduced into the emulsion, and mixed with water. Phase circulation in the known method occurs in the cavity of the pumping centrifugal pump and pipeline 12.

The disadvantage of the scraper is that the surface (wall) surface and the pipeline, which is the screen, is comparatively mache and, moreover, not hydrophilic, which limits the possibilities to intensify the process of reversing the phases of the emulsion. Therefore, in order to achieve the required speed and depth of phase inversion, the demulsifier costs are significant, which increases the cost of oil dehydration. But even such measures do not always allow to achieve the required degree of reversing the phases of the emulsion, for example, in the case of crude and heavy viscous oils.

The goal of the invention is to reduce the consumption of the dellulgator.

This goal is achieved by the fact that in the method of de-emulsification of infusion by introducing a demulsifier into the emulsion, mixing in the presence of a solid granular material with a grain size of 2-10 mm with a hydrophilic surface of silicate is similar to that of phase inversion followed by section formation phases.

In addition, glass, porcelain, silnkagel or molecular sieves should be used as a granular material.

The introduction of solid crushed material into the emulsion, which has a surface area, provides a significant increase in the surface of the inverting screen on which the water globules contact. Intensive mixing facilitates the radiation of the contact of the emulsion with the solid material suspended in the flow (suspended) state. The use of a material with a hydrophilic profile creates the best conditions for the contact of water globules and their fusions. Such a surface can also be created on the particles of any material by applying a plastic film. The amount and size of the material is chosen empirically depending on the physicochemical properties of the oil and water, the flow rate and density of the material to be supplied, as well as from the technological considerations (temperature, flow rate, size of the apparatus, pipelines, ease of use). material, flow control, etc.). As a result of this, the ipteisphphic process of the phase reversal process is provided. In connection with this, the rate of formation of the external phase (water) increases, which quickly precipitate from oil. Thereby, the efficiency of the oil de-pulsus method is improved. In addition, a decrease in the consumption of surfactants is simultaneously achieved. The method is carried out in the following way. In the emulsion with a water cut higher than the critical for reversal phases (more than 60-70%), pumped through the pipeline and Yaodlezhruto destruction, a demulsifier in the amount of 20-75 g is injected with a dosing pump / t, and in the case of watering of the head (the same as the critical pump, water is supplied from the settling tank. Then the emulsion enters the apparatus with solid D1 .1M in it, a granular material having a hydraulic surface. ikatny substances, for example glass, itvui porcelain, 1shi silica gel or molecular sieves (natural and synthetic KyccTBeimoro origin {w). In the apparatus, a turbulent mode is maintained, which provides the hydrodynamic conditions necessary for the inversion of the emulsine phases, the regime is created by the flow itself or by using the device, for example, with a stirrer. Due to the highly developed hydrophilic contact surface and intensive mass transfer, a natural, inverse oil emulsion is converted to form a tincture of the oil-in-oil direct emulsion. Yes. The reversed emulsion enters through a pipeline into a sump in which it is separated into oil and water. A portion of the sedimentary water required for reversing the phases is fed through a pipeline to mix with fresh emulsion, and the rest goes to treatment - or is discharged into the sewer system. The process was carried out .i at a low temperature {10-30 ° C). As a result, oil is dewatered to 0-2%. The proposed method of paspymeinw oil emulsions was tested under laboratory conditions. Example. A sample of a 100 ml emulsion with a specified water content is placed in the glass, glass beads, or headlights (|) or cylinders, or granular silica gel, or artefact, 1E molecular sieves (particle size was 2-10 mm) are introduced into it, then mixed with a thinner at 400 rpm. Without discontinuing the change, a 2% desmulgator solution is dripped through dropwise (Separol 5084). The phase reversal moment is fixed by a jump in the electrical conductivity of the emulsion. Using an H-370 recording recorder, similar experiments were carried out without the addition of solid matter. The experiments were carried out at room temperature (18-25 ° C). The results obtained are shown in Tabletha, which show the complete reversal of phases and deep dehydration of oil in the presence of particles of solid, hydrophilic material with significantly lower demulgator costs (2-6 times).

Table continuation

Claims (2)

The use of the proposed method of oil emulsion compression provides, in comparison with the known methods, a significant acceleration and deeper phase formation of the emulsion, an increase in the quality of both oil and a sharp decrease in the consumption of daemunugator (2-6 times), and it will increase the technical and economic efficiency of oil emulsion . Formula of the invention 1. Method of oil demulsification by introducing a demulsifier into the emulsion, mixing to obtain phase reversal, followed by separation of the formed phases, due to the fact that, with a decrease in the consumption of the desmulsifier, permixing is carried out in the presence of solid granular material with a grain size 2-10 mm with hydrophilic surface of ossicative origin. 2. The method according to p. 1, that is, t h in a h and y with the fact that as a solid ee | These materials are used as a stand, porcelain, porcelain, one of the molecules of the P1s sieves. Sources of information that are accepted in the high-level machine during the examination 1.Tronov V, P. Emulsion destruction during the extraction of 1kfga- M., Nedra, 1974, p. 104 2. Kaspar and K.S. Promyslov (preparation tfg, M., Neesch) a, 1966, pp. 83 (prototype).