CN203081419U

CN203081419U - Oil well three-phase separator

Info

Publication number: CN203081419U
Application number: CN 201220745825
Authority: CN
Inventors: 戴义明
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-12-31
Filing date: 2012-12-31
Publication date: 2013-07-24
Anticipated expiration: 2022-12-31

Abstract

The utility model discloses an oil well three-phase separator, relates to a mating device used for oil drawing of an oil well and aims at providing a device which is simple in structure and achieves oil, gas and sand three-phase separation in the pit. The oil well three-phase separator comprises an upper core pipe, wherein a base pipe is sleeved outside the upper core pipe, a plurality of liquid inlet holes are formed in a pipe wall of the base pipe, a screen pipe covers outside the base pipe, the upper end of the base pipe is fixed on the lower end of an upper coupling, the upper end of the upper core pipe is communicated with the upper coupling, the lower end of the upper core pipe is communicated with the upper end of a lower spiral pipe, spiral blades are arranged on an outer circumferential face of the lower spiral pipe, the spiral blades are wound on the outer circumferential face of the lower spiral pipe from top to bottom, an oil pipe nipple is sleeved outside the lower spiral pipe, and the upper end of the oil pipe nipple is communicated with the lower end of the base pipe. A blocking head is arranged at the lower end of the oil pipe nipple, and the blocking head is arranged below an opening at the lower end of the lower spiral pipe. The oil well three-phase separator utilizes centrifugal force in the process of oil pump pumping to effectively achieve three-phase separation of the oil, the gas and the sand.

Description

The oil well three phase separator

Technical field

The utility model relates to the kit of a kind of oil field strike the oil, particularly relates to a kind of corollary apparatus that is used for downhole oil, gas, sand three phase separation.

Background technology

At present on the oil field to the separation of oil, gas, sand three-phase in the crude oil of down-hole, or adopt separate oil, gas separating device---gas anchor and sand filter, or the employing back-off packer is hung on the down-hole.Gas anchor separates the liquid in the crude oil, gas with sand filter general using downhole packer, this separate mode can not be suitable for the oil well of some casing deformations, and when using in sand output well, sand is piled up on packer top easily, cause the tubing string card stifled, cause difficulty to well workover; Its tubular column structure complexity of back-off packer, flow chart is many, and the construction working amount is big, has influenced operating efficiency.

The utility model content

The technical problems to be solved in the utility model provides a kind of simple in structure, device of realizing downhole oil, gas, sand three phase separation.

The utility model oil well three phase separator, comprise the core pipe, the described core pipe overcoat parent tube of going up, offer some inlet openings on the described parent tube tube wall, described parent tube outer cover screen casing, described parent tube upper end is fixed on the lower end of box cupling, the described core pipe upper end of going up is communicated with the described box cupling of going up, the described core pipe lower end of going up is communicated with helix tube upper end down, and described helix tube outer circumference surface down is provided with helical blade, and described helical blade is wrapped on the outer circumference surface of described helix tube down from top to bottom, described helix tube overcoat tubing nipple down, described tubing nipple upper end is communicated with described parent tube lower end, and described tubing nipple lower end is provided with plug, and described plug is below described helix tube lower ending opening down.

Compared with prior art the utility model by parent tube, go up core pipe, screen casing, helix tube etc. simple combination, when oil pump aspirates, the one-way valve opens of oil pump, crude oil and gas enter parent tube from the inlet opening of parent tube, sand by the screen casing retaining outside, gas mixture enters between tubing nipple and the following helix tube, under the effect of helical blade, gas mixture moves downward around following helix tube, utilize centrifugal force to make gas separate out come-up dexterously, thereby discharge, crude oil sinks to being inhaled into down helix tube, realize that oily downhole oil, gas separate, and have improved production efficiency.

The utility model oil well three phase separator, it is by middle box cupling that wherein said tubing nipple upper end is communicated with described parent tube lower end, box cupling is enclosed within described lower end of going up the core pipe in described, described tubing nipple upper end, described parent tube lower end are threaded with described middle box cupling, adopt said structure, make tight more, the science of linking between this practical novel features.

Below in conjunction with accompanying drawing the utility model oil well three phase separator is described further.

Description of drawings

Fig. 1 is the utility model oil well three phase separator sectional view.

The specific embodiment

As shown in Figure 1, the utility model oil well three phase separator comprises core pipe 1, last core pipe 1 overcoat parent tube 3, offer some inlet openings 31 on parent tube 3 tube walls, parent tube 3 outer cover screen casings 4, helix tube 2 upper ends that are threaded down, last core pipe 1 lower end, following helix tube 2 outer circumference surfaces are provided with helical blade 21, helical blade 21 is wrapped in down on the outer circumference surface of helix tube 2 from top to bottom, following helix tube 2 overcoat tubing nipples 5, tubing nipple 5 upper ends are threaded with parent tube 3 lower ends, tubing nipple 5 lower ends are provided with plug 6, last core pipe 1 upper end, parent tube 3 upper ends, screen casing 4 upper ends are fixed on the lower end of box cupling 7, last core pipe 1 upper end is communicated with goes up box cupling 7, the upper end of box cupling 8 during screen casing 4 lower ends are fixed on, and it is by middle box cupling 8 that tubing nipple 5 upper ends are communicated with parent tube 3 lower ends, middle box cupling 8 is enclosed within the lower end of core pipe 1, tubing nipple 5 upper ends, parent tube 3 lower ends are threaded with middle box cupling 8.

The utility model is connected to the lower end of oil well pump pumping pipelines and therewith gos deep into the supporting use of oil reservoir, oil pump is used for extracting the oil in the oil reservoir, the plunger of oil pump is up during oil pumping, the one-way valve opens of pump, the crude oil of last core pipe 1 and following helix tube 2 is taken out toward ground, live crude is successively through screen casing 4 slits in the well, inlet opening 31, be inhaled in the parent tube 3, sand in the crude oil is filtered out by screen casing 4 at this moment, gas mixture is entering downwards under the air pressure effect between following helix tube 2 and the tubing nipple 5, make high speed rotary motion along helical blade 21 from top to bottom round following helix tube 2, gas is separated out from crude oil, because the oil ratio air tightness is big, oil accumulates in the bottom of following helix tube 2, then being inhaled into down helix tube 2 fills up and before is sucked away the space that crude oil stays, and gas accumulates on following helix tube 2 tops, when fuel feed pump plunger is descending, closed check valve, and that the gas mixture in the helical blade 21 continues under gravity and action of inertia is descending, and compress the gas on helix tube 2 tops down, under former oil pressure and buoyancy function, the gas of separating out is up along helical blade 21, discharge the utility model through inlet opening 31, realize downhole oil, gas, effective separation of sand.

Above-described embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model all should fall in the definite protection domain of the utility model claims.

Claims

1. oil well three phase separator, it is characterized in that: comprise core pipe (1), described core pipe (1) the overcoat parent tube (3) of going up, offer some inlet openings (31) on described parent tube (3) tube wall, described parent tube (3) outer cover screen casing (4), described parent tube (3) upper end is fixed on the lower end of box cupling (7), described core pipe (1) upper end of going up is communicated with the described box cupling (7) of going up, described core pipe (1) lower end of going up is communicated with helix tube (2) upper end down, described helix tube (2) outer circumference surface down is provided with helical blade (21), described helical blade (21) is wrapped on the outer circumference surface of described helix tube (2) down from top to bottom, described helix tube (2) overcoat tubing nipple (5) down, described tubing nipple (5) upper end is communicated with described parent tube (3) lower end, described tubing nipple (5) lower end is provided with plug (6), and described plug (6) is in described helix tube (2) lower ending opening down below.

2. according to the described oil well three phase separator of claim 1, it is characterized in that: it is by middle box cupling (8) that described tubing nipple (5) upper end is communicated with described parent tube (3) lower end, box cupling (8) is enclosed within described lower end of going up core pipe (1) in described, and described tubing nipple (5) upper end, described parent tube (3) lower end are threaded with described middle box cupling (8).