CN212079285U

CN212079285U - Centrifugal multifunctional oil well sand-proof oil-gas separator

Info

Publication number: CN212079285U
Application number: CN202020279141.2U
Authority: CN
Inventors: 刘喜才; 张刚; 马继增; 王依明; 李自广; 路静
Original assignee: Puyang Yuanheng Litong Petroleum Machinery Co ltd
Current assignee: Puyang Yuanheng Litong Petroleum Machinery Co ltd
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-12-04
Anticipated expiration: 2030-03-09

Abstract

The utility model relates to oil production equipment technical field, concretely relates to centrifugal multi-functional oil well sand prevention oil and gas separator. Including the top connection, the inside center tube that is provided with of interior barrel, through-hole has been seted up on interior barrel upper portion, and interior barrel lower extreme is provided with gas-tight separator, and gas-tight separator lower extreme is provided with secondary sand control separator, and secondary sand control separator lower extreme is provided with primary sand control separator, and the center tube outer fringe is fixed with first helical blade, is fixed with second helical blade on the interior barrel inner wall of center tube below, and first helical blade and second helical blade's spiral opposite direction. The utility model discloses, carry out the whirl when can making liquid subside through setting up first helical blade for gas-liquid separation's efficiency, through setting up the second helical blade opposite with first helical blade helical direction, can make the liquid extreme speed that the whirl subsided change to, the speed of gas-liquid separation has been accelerated to bigger degree, has reduced the gaseous content in the play liquid.

Description

Centrifugal multifunctional oil well sand-proof oil-gas separator

Technical Field

The utility model relates to oil production equipment technical field, concretely relates to centrifugal multi-functional oil well sand prevention oil and gas separator.

Background

Along with the extension of the development time of the oil field, the sand production phenomenon of a part of oil fields or blocks is more and more serious, the sand production causes difficulty in maintaining production, the pump detection period is short, and the production cost is high. Sand production has become one of the difficulties hindering the normal development of oil fields. Along with the extension of oil field development time, the oil well associated gas and crude oil proportion increase gradually in the mixed exploitation liquid to influence the pumping efficiency, produce the airlock effect even, make and can't take out fluid, cause the very big waste of the energy. In oil field exploitation, gas prevention and sand prevention become one of the key factors influencing yield. The liquid after two times of sand prevention separation in the use process of the existing centrifugal multifunctional oil well sand prevention oil-gas separator is discharged after gas is released after the liquid sequentially enters settlement separation and cyclone separation, and partial gas can not be separated from the liquid in the process of settlement separation and cyclone separation due to poor treatment effect of the liquid in the existing equipment, so that the liquid still contains the liquid in the discharged liquid.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a gas-liquid separation is effectual, can carry out the whirl when liquid subsides, and the whirl direction can carry out the extremely fast change, can accelerate the centrifugal multi-functional oil well sand prevention oil and gas separator of gaseous separation in the liquid.

In order to realize the purpose, the utility model provides a technical scheme is:

centrifugal multi-functional oil well sand prevention oil and gas separator, including the top connection, the outer barrel is installed to the top connection lower extreme, the internal interior barrel of installing of urceolus, the check valve is installed to interior barrel upper end, the check valve communicates with the exhaust hole on the top connection, it has the liquid outlet hole to process on the top connection, the inside center tube that is provided with of interior barrel, the center tube is fixed at the check valve lower extreme and rather than the intercommunication, the through-hole has been seted up on interior barrel upper portion, interior barrel lower extreme is provided with gas-proof separator, gas-proof separator lower extreme is provided with secondary sand prevention separator, secondary sand prevention separator lower extreme is provided with primary sand prevention separator, the center tube outer fringe is fixed with first helical blade, be fixed with the second helical blade on the interior barrel inner wall of center tube below.

Specifically, the gasproof separator is including fixing the change lock joint of barrel lower extreme in, and the change lock joint lower extreme is fixed with and makes the body of spiraling, and both sides all are fixed with the baffle around making the body of spiraling, and two baffles symmetry set up, and two baffles divide into independent left cavity and right cavity with the annular space between interior barrel and the outer barrel, make the left eccentric channel of the body lower extreme of spiraling and left cavity intercommunication, through-hole and left cavity intercommunication, make the hole and the right cavity intercommunication of the body of spiraling, right cavity and play liquid hole intercommunication.

Specifically, secondary sand control separator is including fixing the first intermediate head at outer barrel lower extreme, and first intermediate head lower extreme is fixed with the second intermediate head, and the second intermediate head lower extreme is fixed with the outer tube, is provided with rather than endocentric porous chimney filter in the outer tube, and porous chimney filter and second intermediate head fixed connection, the outer tube lower extreme is fixed with and makes the spiral arm.

Specifically, once sand control separator includes the feed liquor pipe, the feed liquor pipe with make spiral arm fixed connection, the processing of its tangential direction has a plurality of feed liquor holes on the feed liquor pipe, the feed liquor pipe lower extreme is fixed with the lower clutch.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses, simple structure, convenient operation carries out the whirl when can making liquid subside through setting up first helical blade for gas-liquid separation's efficiency, through setting up the second helical blade opposite with first helical blade helical direction, can make the liquid utmost point quick switching that the whirl subsided to, and the speed of gas-liquid separation has been accelerated to bigger degree, has reduced the gaseous content in the play liquid.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of region a in fig. 1.

Fig. 3 is an enlarged view of the region B in fig. 1.

Fig. 4 is an enlarged view of the region C in fig. 1.

Fig. 5 is an enlarged view of region D in fig. 1.

Detailed Description

As shown in fig. 1-5, the centrifugal multifunctional oil-well sand-prevention oil-gas separator comprises an upper joint 1, an outer cylinder 6 is installed at the lower end of the upper joint 1, an inner cylinder 5 is installed in the outer cylinder 6, a one-way valve 2 is installed at the upper end of the inner cylinder 5, the one-way valve 2 is communicated with an exhaust hole 3 in the upper joint 1, a liquid outlet 21 is processed in the upper joint 1, a central pipe 4 is arranged inside the inner cylinder 5, the central pipe 4 is fixed at the lower end of the one-way valve 2 and communicated with the lower end of the one-way valve, a through hole 22 is formed in the upper portion of the inner cylinder 5, a gas-prevention separation device is arranged at the lower end of the inner cylinder 5, a secondary sand-prevention separation device is arranged at the lower end of the secondary sand-prevention separation device, a first helical blade 18 is fixed at the outer edge of the central pipe 4, a second helical.

The gasproof separation device comprises a variable buckle joint 7 fixed at the lower end of an inner barrel body 5, a rotary body 8 is fixed at the lower end of the variable buckle joint 7, partition plates 9 are fixed on the front side and the rear side of the rotary body 8, the two partition plates 9 are symmetrically arranged, the two partition plates 9 divide an annular space between the inner barrel body 5 and an outer barrel body 6 into an independent left cavity and an independent right cavity, a left eccentric channel 20 at the lower end of the rotary body 8 is communicated with the left cavity, a through hole 22 is communicated with the left cavity, an inner hole of the rotary body 8 is communicated with the right cavity, and the right cavity is communicated with a liquid outlet hole 21.

The secondary sand-prevention separation device comprises a first intermediate joint 10 fixed at the lower end of the outer cylinder body 6, a second intermediate joint 11 is fixed at the lower end of the first intermediate joint 10, an outer pipe 13 is fixed at the lower end of the second intermediate joint 11, a porous filter pipe 12 concentric with the outer pipe is arranged in the outer pipe 13, the porous filter pipe 12 is fixedly connected with the second intermediate joint 11, and a swing arm 14 is fixed at the lower end of the outer pipe 13.

The primary sand-prevention separation device comprises a liquid inlet pipe 15, the liquid inlet pipe 15 is fixedly connected with a spiral arm 14, a plurality of liquid inlet holes 17 are processed on the liquid inlet pipe 15 along the tangential direction of the liquid inlet pipe, and a lower joint 16 is fixed at the lower end of the liquid inlet pipe 15.

The external pump body is started to generate negative pressure, so that liquid in an oil well enters the primary sand control separation device, the liquid enters the liquid inlet pipe 15 through the liquid inlet hole 17 along the tangential direction of the liquid inlet pipe 15 to generate rotational flow, namely, a high angular velocity is generated, under the angular velocity, due to different densities of solid and liquid, generated centrifugal force is different, external rotational flow and internal rotational flow are formed inside the liquid inlet pipe 15, solid particles with high density form external rotational flow, the external rotational flow moves downwards along the inner wall of the liquid inlet pipe 15 and sinks into the tail pipe, the internal rotational flow forms low-pressure upward movement due to high-speed rotation and enters the secondary sand control separation device, the liquid enters the outer pipe 13 through the hole of the cyclone creating arm 14, the liquid passes through the cyclone creating arm 14 to generate rotational flow, the liquid is filtered in the outer pipe 13 through the porous filter pipe 12 to complete secondary sand control separation, and light impurities which are not separated out can be filtered, light impurities sink into a tail pipe, liquid filtered by a primary sand prevention separation device and a secondary sand prevention separation device enters a gas prevention separation device through a second intermediate joint 11 and a first intermediate joint 10, the liquid flows into a left cavity through an eccentric channel 20 and then enters an inner cylinder body 5 through a through hole 22 to be settled downwards, gas flows upwards and liquid flows downwards under the settlement action, meanwhile, the liquid rotates under the action of a first spiral blade 18 in the settlement process to realize settlement rotation, the settled liquid rotates at the highest speed to be reversed under the action of a second spiral blade 19, so that the separation of the gas and the liquid is accelerated, the liquid generates rotational flow again through a cyclone body 8, the gas-liquid separation speed is further accelerated, the liquid after gas separation enters a right cavity and is discharged through a liquid outlet hole 21, gas separated from the liquid forms a gas cap on the upper part of a central pipe 4, and when the gas reaches a certain pressure, a one-way valve 2 is opened, the gas enters the vent hole of the upper joint 1 and is exhausted.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A centrifugal multifunctional oil-well sand-proof oil-gas separator comprises an upper joint (1), wherein an outer cylinder (6) is arranged at the lower end of the upper joint (1), an inner cylinder (5) is arranged in the outer cylinder (6), a check valve (2) is arranged at the upper end of the inner cylinder (5), the check valve (2) is communicated with an exhaust hole (3) on the upper joint (1), a liquid outlet hole (21) is processed on the upper joint (1), a central pipe (4) is arranged in the inner cylinder (5), the central pipe (4) is fixed at the lower end of the check valve (2) and communicated with the same, a through hole (22) is formed in the upper part of the inner cylinder (5), a gas-proof separation device is arranged at the lower end of the inner cylinder (5), a secondary sand-proof separation device is arranged at the lower end of the gas-proof separation device, a primary sand-proof separation device is arranged at the lower, a second helical blade (19) is fixed on the inner wall of the inner cylinder body (5) below the central tube (4), and the helical directions of the first helical blade (18) and the second helical blade (19) are opposite.

2. The centrifugal multifunctional oil-well sand-prevention oil-gas separator as claimed in claim 1, wherein the gas-prevention separation device comprises a buckle-changing joint (7) fixed at the lower end of an inner cylinder (5), a rotation-making body (8) is fixed at the lower end of the buckle-changing joint (7), partition plates (9) are fixed on the front side and the rear side of the rotation-making body (8), the two partition plates (9) are symmetrically arranged, an annular space between the inner cylinder (5) and an outer cylinder (6) is divided into a left cavity and a right cavity which are independent, an eccentric channel (20) on the left side of the lower end of the rotation-making body (8) is communicated with the left cavity, a through hole (22) is communicated with the left cavity, an inner hole of the rotation-making body (8) is communicated with the right cavity, and the right cavity is communicated with.

3. The centrifugal multifunctional oil-well sand prevention oil-gas separator as claimed in claim 1, wherein the secondary sand prevention separation device comprises a first intermediate joint (10) fixed at the lower end of the outer cylinder body (6), a second intermediate joint (11) is fixed at the lower end of the first intermediate joint (10), an outer pipe (13) is fixed at the lower end of the second intermediate joint (11), a porous filter pipe (12) concentric with the outer pipe (13) is arranged in the outer pipe (13), the porous filter pipe (12) is fixedly connected with the second intermediate joint (11), and a spiral arm (14) is fixed at the lower end of the outer pipe (13).

4. The centrifugal multifunctional oil-well sand prevention oil-gas separator as claimed in claim 3, wherein the primary sand prevention separation device comprises a liquid inlet pipe (15), the liquid inlet pipe (15) is fixedly connected with the cyclone arm (14), a plurality of liquid inlet holes (17) are processed on the liquid inlet pipe (15) along the tangential direction of the liquid inlet pipe, and a lower joint (16) is fixed at the lower end of the liquid inlet pipe (15).