SU349414A1 - CENTRIFUGE (TURBOCYCLON) FOR DECLINING - Google Patents

Description

A lime centrifuge (turbo-cycloi) for desliming washing liquids during the drilling of oil and gas wells, including a rotor located in the chamber, made in the form of a pipe with holes, having hydraulic closures on the loading and drainage ports.

The proposed centrifuge differs from that known in that the holes in the walls of the rotor are angled, for example 45 °, to the radius with an external outlet in the direction opposite to the direction of rotation of the rotor.

This embodiment provides a reduction in specific energy consumption.

Pa the drawing shows the proposed centrifuge.

A rotor 2 is fixed to the shaft / center of triphagi. It is made in the form of a pipe with holes, at the ends of which centrifugal hydraulic locks 3 are fixed, consisting of an impeller of radially located blades 4 and a circulating chamber 5, which serve to keep the suspension in the rotor cavity at the level of the drain neck 6

measures 8 for placing centrifugal hydraulic valves therein.

Chamber 7 with the help of pipeline 9 is connected to a hydrocyclone 10, the drain pipe

}} which is connected to the hopper 12 of the centrifuge.

The filing of the slimey mud in a centrifuge can be carried out caMOTCKOjM through the hopper 12. According to

as the mud in the rotor cavity progresses from the feed neck 13 to the drain neck, centrifugal forces expel the mud from the coarse particles and, in the form of fine desilicated mud, is discharged through the slle neck, the drain ring groove 14 and the drain pipe 15.

Coarse particles of solid rock,

in the cavity of the rotor, under the influence of centrifugal force move in the radial direction, reach the walls of the rotor drum and through the holes 16 are thrown into the chamber 7, the circular in the annular space of which is shifted in the direction of increasing its radius, i.e. they thicken in the broadened part of the chamber 7

a cyclone from which, after additional condensation, is continuously discharged through a sand nozzle. The hydrocyclone discharge, being somewhat more crude than the rotor discharge, returns to the centrifuge but the pipeline 11 as a recycled product. The ribbon spiral 17 on the inner surface of the rotor prevents the pulp from lagging behind the rotation of the rotor and promotes the movement of the purified solution to the drain neck.

The arrangement of the holes at an angle of, for example, 45 ° to the radius with an external exit in the direction opposite to the direction of rotation of the rotor, provides quieter hydrodynamic conditions in the cavity of the rotor, since hydraulic disturbances and turbulence of the pulp in chamber 7 are not transmitted through these holes inwards separating cavity of the rotor (turbine).

This contributes to a more complete separation of the sludge from the treated washing liquid, as well as reducing the specific energy consumption.

Subject invention

Centrifuge (turbo-cyclop) for desliming liquid washing liquids in the process

oil and gas wells, comprising a rotor located in the chamber, made in the form of a pipe with holes, having hydraulic gates on the feed and drain necks, characterized in that

In order to increase the efficiency of desliming and decrease the specific energy consumption, the holes in the rotor walls are located at an angle, for example, 45 ° to the radius with an external exit in the direction opposite to the direction of rotation of the rotor.

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