SU1161165A1 - Mixing device - Google Patents

Abstract

1. MIXING DEVICE, mainly for producing foam, comprising a housing provided with an inlet pipe, having an annular protrusion in the opening of which is terminally mounted for axial movement and communicated with another inlet nozzle, coaxially with the mixing chamber and the rod with the conical element, differs : so that, in order to obtain in a wide range of costs, fine-dispersed high stability; a foam for killing and development of wells, nozzles and a hole in the annular protrusion olneny a diffuser shape and the conical member is mounted concentrically with the nozzle. 2. The device POP.1, characterized in that it is additionally provided with a dispersing (L element in the form of a disk with tangential openings, placed on the top of the outlet of the mixing chamber

Description

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The invention relates to devices for mixing various components, in particular, devices for producing foams during plugging, well development and foam acid treatment of both oil and gas wells.

The purpose of the invention is to produce a fine highly stable foam for killing and developing wells in a wide range of costs.

FIG. 1 shows a device, a profile section; in fig. 2 - execution of the dispersing element;

in fig. 3 shows section A-A in FIG. 2. g

The mixing device includes a collection housing 1 consisting of two pipes 2 and 3 connected by a coupling 4, inside which the displacement chamber 5 is located. The collection housing is equipped with inlet pipes 6 and 7 and a discharge pipe 8, inside which is mounted a rod 9 with a nozzle 10 at the end intended to control the feeding of one of the components. To regulate the supply of the other component, there is a hole in the collar lug 11 formed in the form of a diffuser 12 with a concentric nozzle 10. Concentric nozzle 1.0 houses a piston rod 13 with a conical element 14 at the end, designed to regulate the supply of one of the components. The support of the other end of the rod 13 is the dispersing element 15, made in the form of a disk with tangential holes 16.

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The rods 9 and 13 are placed in the housing with the possibility of axial movement relative to the diffuser 12.

The mixing device operates as follows.

Gas and liquid are fed separately into the device through inlet pipes 6 and 7. By moving the rod 13, the required flow rate for gas is established. The flow rate is determined based on the performance of the pumps, and the rate of its flow through the annular gap, filled in the form of a slit and formed by the nozzle 10 and the diffuser 12, by moving the rod 9.

The liquid and gas, the passage through conical coaxially spaced slots, form parallel-flow fan-like parallel flows, which, interacting with each other, form a two-phase flow.

Further, the two-phase flow, the passage through the dispersing element 15, is additionally dispersed and forms a uniform flow, which is directed through the nozzle 8 to the well.

The dispersion of the foam is controlled by moving the rod 9 by creating a certain size of the slit gap, and accordingly, the rate of fluid flow.

The use of a mixing device for producing multiphase foams during plugging, development and foam acid treatments of oil and gas wells in comparison with the prototype will allow obtaining a finely dispersed highly stable foam in a wide range of costs.

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Claims (2)

1. MIXING DEVICE, mainly for producing foam, comprising a housing provided with a supply pipe, having an annular protrusion in the opening of which is axially displaceable axially displaceably communicated with another nozzle supply pipe, coaxial to which there is a mixing chamber and a rod with a conical element, characterized in that, in order to obtain a finely dispersed highly stable foam for killing and developing wells, nozzles and a hole in the annular protrusion in a wide range of costs, in the form of a diffuser and a conical element mounted concentrically nozzle. 2. Device pop. 1, characterized in that it is additionally equipped with a dispersing element in the form of a disk with tangential openings, placed on the rod at the exit ^ from the mixing chamber 1 11611