CN218529969U

CN218529969U - Wellhead filter for oilfield water injection

Info

Publication number: CN218529969U
Application number: CN202223040060.5U
Authority: CN
Inventors: 罗红芳; 南子月; 李国荣; 李永耀
Original assignee: YAN'AN VOCATIONAL & TECHNICAL COLLEGE
Current assignee: YAN'AN VOCATIONAL & TECHNICAL COLLEGE
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-02-28
Anticipated expiration: 2032-11-16

Abstract

The utility model provides a well head filter for oil field water injection, the utility model relates to a filtration equipment technical field, filter plate conflict sets up on the connection inner wall of return bend and No. two return bends, the fixed spacing collar that is provided with on the outer rampart of filter plate, the flushing pipe link up fixed back lateral wall top that sets up at No. two return bends, be equipped with the filter core on the right side inner rampart of No. two return bends, the sealing plug is contradicted and is set up in the blowoff hole of seting up under a return bend on the lateral wall, the fixed screw thread fixed sleeve that is provided with in outside position department that lies in the blowoff hole on a return bend, the fixed screw thread knob that is provided with in lower part of sealing plug, the screw thread knob connects the setting in the screw thread fixed sleeve soon through the screw thread, not only be convenient for realize daily simple effective cleanness to the filter screen, can also carry out dual filtration to the water source of pouring into the well head, improve the quality of pouring into the well head after filtering.

Description

Wellhead filter for oilfield water injection

Technical Field

The utility model relates to a filtration equipment technical field, concretely relates to well head filter for oil field water injection.

Background

The oil field water injection utilizes the water injection well to pour into the oil reservoir into water, in order to supply and keep oil reservoir pressure, avoid the increase of exploitation time to lead to oil reservoir self energy constantly to be consumed, cause oil reservoir pressure to descend constantly, the degasification of underground crude oil in a large number, viscosity increases, oil well output significantly reduces, in oil field water injection development process, the in-process of injected water transport to the well head, impurity still probably sneaks into, need filter before pouring into the well head, current filter most filters water through its inside filter plate, although can both filter most impurity in the aquatic, its inside filter plate is difficult to obtain effectively clean, and if only filter by one deck filter plate, its quality of water of pouring into the well head still can not reach standard, therefore need a well head filter for the oil field urgently to pour into water.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide a well head filter for oil field water injection that sets up rationally for solve above-mentioned problem.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the filter body is of an S-shaped structure and consists of a first bent pipe, a second bent pipe and a straight pipe, wherein the water inlet end on the left side of the first bent pipe is connected with external water injection equipment through a pipeline, the water outlet end on the right side of the first bent pipe is arranged in a manner of being abutted against the water inlet end on the left side of the second bent pipe, the water outlet end on the right side of the second bent pipe is arranged in a manner of being abutted against the upper end of the straight pipe, and the lower end of the straight pipe is connected with a wellhead through a pipeline;

it also includes:

the filter screen plate is arranged on the inner connecting wall of the first bent pipe and the second bent pipe in a butting manner, a limiting ring is fixedly arranged on the outer annular wall of the filter screen plate, and the limiting ring is arranged in a limiting groove formed in the connecting end of the first bent pipe and the second bent pipe in a butting manner;

the flushing pipe is fixedly arranged above the rear side wall of the second bent pipe in a penetrating way, the front end of the flushing pipe is arranged in a downward inclined way, the flushing pipe is connected with an external flushing device through a pipeline, a filter element is arranged on the inner ring wall of the right side of the second bent pipe, and a connecting and fixing mechanism is fixedly arranged on the filter body;

the sealing plug, the sealing plug is contradicted and is set up in the blowoff hole of seting up under No. one return bend on the lateral wall, and the outside position department that lies in the blowoff hole on No. one return bend is fixed and is provided with the thread tightening sleeve, and the fixed screw thread knob that is provided with in lower part of sealing plug, screw thread knob connect the setting soon in the thread tightening sleeve through the screw thread.

Preferably, the connection fixing mechanism comprises:

the two upper fixing plates are respectively fixedly sleeved on the outer ring walls at the left end and the right end of the second bent pipe;

the two lower fixing plates are respectively fixedly sleeved on the outer ring wall of the right water outlet end of the first bent pipe and the outer ring wall of the upper end of the straight pipe, and the upper part of the lower fixing plate is in contact with the lower part of the upper fixing plate;

the threaded rods are a plurality of and are respectively screwed into thread grooves which are correspondingly distributed on the upper fixing plate and the lower fixing plate at equal round angles through threads.

Preferably, a plurality of guide rods are fixedly arranged on the side wall of the lower portion of the upper fixing plate in a distributed manner, and the guide rods are inserted into guide grooves formed in the side wall of the upper portion of the lower fixing plate in a distributed manner.

Preferably, an annular groove and a second annular groove are respectively formed in adjacent side walls of the upper fixing plate and the lower fixing plate, a sealing ring is arranged in the second annular groove in an abutting mode, and the upper portion of the sealing ring is arranged in the first annular groove in an abutting mode after the second annular groove is exposed.

Preferably, a rubber sleeve is sleeved on the second bent pipe.

Compared with the prior art, the beneficial effects of the utility model are that: a well head filter for oil field water injection, not only be convenient for realize daily simple effective clean to filter plate, can also carry out dual filtration to the water source of pouring into the well head, improve the quality of water of pouring into the well head after filtering.

Drawings

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

Fig. 2 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A in fig. 1.

Fig. 3 is an enlarged view of a portion B in fig. 2.

Fig. 4 is an enlarged view of a portion C in fig. 2.

Fig. 5 is an exploded view of the components of the middle connection fixing mechanism, the guide rod and the sealing ring of the present invention.

Fig. 6 is an exploded view of the middle sealing plug, the threaded fixing sleeve and the threaded knob of the present invention.

Description of reference numerals:

the filter comprises a filter body 1, a first bent pipe 1-1, a second bent pipe 1-2, a straight pipe 1-3, a filter screen plate 2, a limiting ring 3, a limiting groove 4, a flushing pipe 5, a filter element 6, a sealing plug 7, a sewage discharge hole 8, a thread fixing sleeve 9, a thread knob 10, a connecting and fixing mechanism 11, an upper fixing plate 11-1, a lower fixing plate 11-2, a threaded rod 11-3, a thread groove 11-4, a first annular groove 12, a second annular groove 13, a guide rod 14, a guide groove 15, a sealing ring 16 and a rubber sleeve 17.

Detailed Description

In the following, the technical solutions of the present invention will be clearly and completely described with reference to the accompanying drawings, and the preferred embodiments in the description are only examples, and all other embodiments obtained by those skilled in the art without any inventive work belong to the scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1 to fig. 6, the present embodiment adopts the following technical solutions: the filter comprises a filter body 1, wherein the filter body 1 is of an S-shaped structure, the filter body 1 consists of a first bent pipe 1-1, a second bent pipe 1-2 and a straight pipe 1-3, the water inlet end on the left side of the first bent pipe 1-1 is connected with external water injection equipment through a pipeline, the water outlet end on the right side of the first bent pipe 1-1 is in contact with the water inlet end on the left side of the second bent pipe 1-2, the water outlet end on the right side of the second bent pipe 1-2 is in contact with the upper end of the straight pipe 1-3, a rubber sleeve 17 is sleeved on the second bent pipe 1-2, when the second bent pipe 1-2 needs to be disassembled or assembled, the rubber sleeve 17 can be held by hands, the friction force in a hand holding contact state is increased, the taking movement of the second bent pipe 1-2 during disassembly or assembly is more stable, the rubber sleeve 17 has certain flexibility, the holding hand feeling is more comfortable, and the lower end of the straight pipe 1-3 is connected with a well mouth through a pipeline;

it also includes:

the filter screen plate 2 is arranged on the inner wall of the connection of the first bent pipe 1-1 and the second bent pipe 1-2 in a butting manner, the outer ring wall of the filter screen plate 2 is fixedly provided with a limiting ring 3, and the limiting ring 3 is arranged in a limiting groove 4 formed in the connection end of the first bent pipe 1-1 and the second bent pipe 1-2 in a butting manner;

the flushing pipe 5 is fixedly arranged above the rear side wall of the second bent pipe 1-2 in a penetrating way, the front end of the flushing pipe 5 is arranged in a downward inclination way, the flushing pipe 5 is connected with an external flushing device through a pipeline, a filter element 6 is arranged on the inner annular wall on the right side of the second bent pipe 1-2, and the water quality of water injected into a well head can be improved through double filtration of the filter screen plate 2 and the filter element 6;

sealing plug 7, sealing plug 7 is contradicted and is set up in blowoff hole 8 seted up on return bend 1-1 lower lateral wall, and the outside position department welded fastening who lies in blowoff hole 8 on return bend 1-1 is provided with thread tightening sleeve 9, and the lower part of sealing plug 7 is fixed and is provided with screw knob 10, and screw knob 10 connects the setting soon in thread tightening sleeve 9 through the screw thread, connects soon through screw knob 10 can firmly contradict sealing plug 7 in blowoff hole 8, avoids having water to ooze from blowoff hole 8 when carrying out the water injection to the well head.

The second embodiment:

as shown in fig. 1, fig. 3 and fig. 5, this embodiment is an improvement on the first embodiment, and the connection fixing mechanism 11 includes:

two upper fixing plates 11-1 are respectively welded and fixedly sleeved on the outer ring walls at the left end and the right end of the second bent pipe 1-2;

the lower fixing plate 11-2 is provided with two lower fixing plates 11-2, the two lower fixing plates 11-2 are respectively welded and fixedly sleeved on an outer ring wall at the right water outlet end of a first bent pipe 1-1 and an outer ring wall at the upper end of a straight pipe 1-3, the upper part of the lower fixing plate 11-2 is arranged in a manner of abutting against the lower part of the upper fixing plate 11-1, the adjacent side walls of the upper fixing plate 11-1 and the lower fixing plate 11-2 are respectively provided with a first annular groove 12 and a second annular groove 13, a sealing ring 16 is arranged in the second annular groove 13 in an abutting manner, the upper part of the sealing ring 16 is exposed out of the second annular groove 13 and then arranged in the first annular groove 12 in an abutting manner, the sealing ring 16 can improve the sealing performance of the joint of the upper fixing plate 11-1 and the lower fixing plate 11-2 and avoid water seepage, a plurality of guide rods 14 are fixedly arranged on the lower side wall of the upper fixing plate 11-1 in a distributed manner of equal round angles, the guide rods 14 are inserted in guide grooves 15 which are randomly arranged on the upper side wall of the lower fixing plate 11-2, and the upper fixing plate 11-1 and the lower fixing plate 11-2 can be prevented from rotating when the upper fixing plate 11-2;

the threaded rods 11-3 are provided with a plurality of threaded rods 11-3, and are respectively screwed in threaded grooves 11-4 which are formed in the upper fixing plate 11-1 and the lower fixing plate 11-2 and are distributed in corresponding equal round angles through threads.

When the utility model is used, the left water inlet end of the first bent pipe 1-1 is connected with external water injection equipment through a pipeline, the lower end of the straight pipe 1-3 is connected with a well head through a pipeline, then the external water injection equipment is started to inject water into the first bent pipe 1-1, the water in the first bent pipe 1-1 is injected into the second bent pipe 1-2 after the first heavy filtration of the filter screen plate 2, the water in the second bent pipe 1-2 is injected into the well head along the straight pipe 1-3 through the second heavy filtration of the filter element 6, when the filter screen plate 2 needs to be cleaned, the thread knob 10 is firstly rotated, the thread knob 10 is taken down after being unscrewed from the thread fixing sleeve 9, when the thread knob 10 is taken out, the sealing plug 7 can also synchronously break away from the conflict with the sewage discharge hole 8 along with the taking out of the thread knob 10, then a valve on a flushing pipe 5 and an external flushing device like a flushing gun are opened, the external flushing device sprays high-pressure water flow to flush the filter screen plate 2 from top to bottom through the flushing pipe 5, impurities blocked in meshes of the filter screen plate 2 are flushed into the first bent pipe 1-1 and are influenced by the structure of the second bent pipe 1-2, so that a sufficient height difference can be formed between the filter screen plate 2 and the upper part of the filter element 6, the flushed impurities are prevented from splashing to pollute the filter element 6, when the flushing water flow and the impurities flow into the first bent pipe 1-1, the flushing water flow can be prevented from flowing back upwards in the first bent pipe 1-1 through the bent pipe structure of the first bent pipe 1-1, the flushing water flow and the impurities can be stably discharged through a sewage discharge hole 8, the filter screen plate 2 is routinely and conveniently and effectively cleaned, when the filter screen plate 2 and the filter element 6 need to be detached for replacement, the threaded rod 11-3 can be unscrewed from the thread groove 11-4, then the rubber sleeve 17 is held by hand to lift upwards, the second bent pipe 1-2 is taken out, the guide rod 14 is separated from the guide groove 15, the upper fixing plate 11-1 is separated from the lower fixing plate 11-2, and then the filter screen plate 2 and the filter element 6 can be replaced.

After adopting above-mentioned structure, this embodiment's beneficial effect is as follows:

1. through the arrangement of the filter screen plate 2 and the filter element 6, the double filtration of water injected into a wellhead by the filter can be realized, and through the matching of the flushing pipe 5, the sealing plug 7, the thread fixing sleeve 9 and the thread knob 10, the convenient flushing and cleaning of the daily filter screen plate 2 can be realized, and the water quality injected into the wellhead after filtration is improved;

2. the sealing ring 16 can increase the sealing performance of the joint of the upper fixing plate 11-1 and the lower fixing plate 11-2, and prevent water injection from seeping out.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A wellhead filter for oilfield water injection comprises a filter body (1), wherein the filter body (1) is of an S-shaped structure, the filter body (1) is composed of a first bent pipe (1-1), a second bent pipe (1-2) and a straight pipe (1-3), the water inlet end on the left side of the first bent pipe (1-1) is connected with external water injection equipment through a pipeline, the water outlet end on the right side of the first bent pipe (1-1) is arranged in a manner of abutting against the water inlet end on the left side of the second bent pipe (1-2), the water outlet end on the right side of the second bent pipe (1-2) is arranged in a manner of abutting against the upper end of the straight pipe (1-3), and the lower end of the straight pipe (1-3) is connected with a wellhead through a pipeline;

the method is characterized in that: it also includes:

the filter screen plate (2) is arranged on the inner connecting wall of the first bent pipe (1-1) and the second bent pipe (1-2) in a butting mode, a limiting ring (3) is fixedly arranged on the outer annular wall of the filter screen plate (2), and the limiting ring (3) is arranged in a limiting groove (4) formed in the connecting end of the first bent pipe (1-1) and the second bent pipe (1-2) in a butting mode;

the washing pipe (5) is fixedly arranged above the rear side wall of the second bent pipe (1-2) in a penetrating manner, the front end of the washing pipe (5) is arranged in a downward inclining manner, the washing pipe (5) is connected with an external washing device through a pipeline, a filter element (6) is arranged on the inner ring wall on the right side of the second bent pipe (1-2), and a connecting and fixing mechanism (11) is fixedly arranged on the filter body (1);

sealing plug (7), sealing plug (7) are contradicted and are set up in blowoff hole (8) seted up on the lateral wall under No. one return bend (1-1), and the outside position department that lies in blowoff hole (8) on No. one return bend (1-1) is fixed to be provided with thread tightening sleeve (9), and the lower part of sealing plug (7) is fixed to be provided with screw thread knob (10), and screw thread knob (10) connect the setting in thread tightening sleeve (9) through the screw thread soon.

2. A wellhead filter for oilfield waterflooding as defined in claim 1, wherein: the connection fixing mechanism (11) includes:

the two upper fixing plates (11-1) are respectively fixedly sleeved on the outer ring walls at the left end and the right end of the second bent pipe (1-2);

the number of the lower fixing plates (11-2) is two, the two lower fixing plates (11-2) are fixedly sleeved on the outer ring wall of the water outlet end of the right side of the first bent pipe (1-1) and the outer ring wall of the upper end of the straight pipe (1-3), and the upper part of the lower fixing plate (11-2) is arranged in a manner of being abutted to the lower part of the upper fixing plate (11-1);

the screw rods (11-3), the screw rods (11-3) are several, and are respectively screwed in the corresponding thread grooves (11-4) which are distributed on the upper fixing plate (11-1) and the lower fixing plate (11-2) and are provided with equal round angles.

3. A wellhead filter for oilfield waterflooding as defined in claim 2, wherein: the guide device is characterized in that a plurality of guide rods (14) are fixedly arranged on the side wall of the lower portion of the upper fixing plate (11-1) in a distributed mode at equal round angles, and the guide rods (14) are inserted into guide grooves (15) formed in the side wall of the upper portion of the lower fixing plate (11-2) in a distributed mode at equal round angles.

4. A wellhead filter for oilfield waterflooding as defined in claim 2, wherein: a first annular groove (12) and a second annular groove (13) are formed in adjacent side walls of the upper fixing plate (11-1) and the lower fixing plate (11-2) respectively, a sealing ring (16) is arranged in the second annular groove (13) in an abutting mode, and the upper portion of the sealing ring (16) is arranged in the first annular groove (12) in an abutting mode after the second annular groove (13) is exposed.

5. A wellhead filter for oilfield waterflooding as defined in claim 1, wherein: and a rubber sleeve (17) is sleeved on the second bent pipe (1-2).