CN210251453U - Water injection filter - Google Patents

Abstract

The utility model discloses a water injection filter, its characterized in that: the water injection pipe is integrally sleeved outside the filtering and flow guiding assembly, and the control water injection assembly penetrates through the whole water injection pipe and is communicated with an inner cavity of the filtering and flow guiding assembly. The utility model discloses possess with strong filtering capability, can effectively improve the operating efficiency, eliminate the high cost problem that relies on the pump truck water injection.

Description

Water injection filter

Technical Field

The utility model belongs to the technical field of oil pipe water injection pressure testing, concretely relates to water injection filter.

Background

Along with the technological progress, the number of oil wells is increased, the requirements on the oil pipe water injection pressure test process are increased, but the oil pipe water injection pressure test process at the present stage has no effective means in the aspect of filtering injected water, and secondly, the oil pipe can not be quickly filled with the filtered water to complete pressure test.

In addition, because under the constraint of the above conditions, the pressure test of water injection of the oil pipe begins to depend on the water injection of the pump truck, and the cost is greatly increased in order to ensure the water injection efficiency.

SUMMERY OF THE UTILITY MODEL

To present oil pipe water injection pressure testing technology imperfect, work cost is high, the technical problem of inefficiency, the utility model aims at providing a possess filtering capability, steerable water injection volume can raise the water injection filter of efficiency, reduce cost.

The purpose of the utility model is realized through the following technical scheme.

The water injection filter comprises a water injection pipe, a filtering and flow guiding assembly and a control water injection assembly, wherein the water injection pipe is integrally sleeved outside the filtering and flow guiding assembly, and the control water injection assembly penetrates through the water injection pipe and is communicated with an inner cavity of the filtering and flow guiding assembly.

The water injection pipe integrally comprises a first three-way pipe assembly, a second three-way pipe assembly, a variable buckle coupling and an oil pipe coupling, the first three-way pipe assembly, the variable buckle coupling and the oil pipe coupling are sequentially connected from top to bottom, the second three-way pipe assembly is arranged on the side face of the first three-way pipe assembly, and the inner cavity of the second three-way pipe assembly is communicated with the inner cavity of the first three-way pipe assembly.

The inner side of the variable buckle coupling is provided with a step.

The filtration water conservancy diversion assembly includes the level filtering pipe, the second grade filter tube, the choke block, go up the connecting pipe, connecting pipe and honeycomb duct down, the level filtering pipe box is established in the outside of second grade filter tube, form annular space between level filtering pipe and the second grade filter tube, the lower part outside and the holistic inboard fixed connection of water injection pipe of level filtering pipe, the both ends of level filtering pipe are extended to the both ends of second grade filter tube, the lower extreme and the choke block of second grade filter tube offset, the choke block is fixed on the holistic inboard of water injection pipe, the upper portion of going up the connecting pipe passes choke block and second grade filter tube intercommunication, the lower part of going up the connecting pipe switches on through the upper portion of control water injection assembly and lower connecting pipe, the lower part and the honeycomb duct intercommunication of.

And a spiral groove is formed in the outer side of the flow guide pipe.

The water injection control assembly comprises a valve hand wheel, a connecting seat, a fixed seat, a pull rod, a rubber valve and a partition pipe, wherein the valve hand wheel is in threaded connection with the connecting seat, the connecting seat is fixedly connected with the fixed seat, the pull rod is arranged in inner cavities of the connecting seat and the fixed seat in a penetrating manner, one end of the pull rod is connected with the rubber valve, and the other end of the pull rod is connected with the valve hand wheel; the dividing pipe is arranged in the filtering and flow guiding assembly, the axial direction of the dividing pipe is the same as that of the filtering and flow guiding assembly, the rubber valve is arranged in the dividing pipe, and one end of the fixing seat is abutted to the outer side of the dividing pipe.

The side of the fixed seat is provided with an exhaust hole, and the position of the exhaust hole is positioned at the outer side of the whole water injection pipe.

The whole upper end of the water injection pipe is provided with a plug.

The utility model has the advantages that: 1. adopt double-deck filtration can accomplish the filtration to debris when not influencing the water injection volume, prevent in the debris grit from falling into the pump, avoided the damage to the pump, reduced the emergence condition that plunger life reduces.

2. The honeycomb duct plays the drainage to rivers, makes rivers rotatory along the pipe wall in flowing into the oil pipe, can reduce the extrusion that water and air contact brought, makes the air discharge more easily.

3. Can control the water injection volume, can no longer carry out the stage injection through controlling the water injection assembly in the water injection filter to the water injection under the condition that external control is no longer carried out to different oil pipes and the condition that takes place the difference.

The utility model discloses possess with strong filtering capability, can effectively improve the operating efficiency, eliminate the high cost problem that relies on the pump truck water injection.

Drawings

FIG. 1 is a schematic view of a water filling filter of an embodiment in a static state.

FIG. 2 is a schematic structural view of a divided tube according to the embodiment.

Fig. 3 is a schematic structural view of the draft tube of the embodiment.

FIG. 4 is a schematic diagram of a structure of an embodiment of a water injection control assembly.

In the drawing, 1 is a three-way pipe assembly I, 2 is a three-way pipe assembly II, 3 is a first-stage filter pipe, 4 is a second-stage filter pipe, 5 is a blocking block, 6 is a buckling hoop, 7 is an upper connecting pipe, 8 is a pipe coupling, 9 is a dividing pipe, 10 is a control water injection assembly, 11 is a lower connecting pipe, 12 is a guide pipe, 13 is a blocking plug, 14 is a valve hand wheel, 15 is a connecting seat, 16 is a fixed seat, 17 is a pull rod, 18 is a rubber valve, 19 is an annular space, and 20 is an exhaust hole.

Detailed Description

Examples

As shown in figures 1-4, a water injection filter is mainly used for being used during oil pipe water injection pressure testing, and comprises a water injection pipe for water injection, a filtering and guiding assembly for filtering and guiding, a control water injection assembly 10 for controlling water injection quantity, wherein the water injection pipe is integrally sleeved outside the filtering and guiding assembly, and the control water injection assembly 10 is communicated with an inner cavity of the filtering and guiding assembly through the whole water injection pipe.

The concrete structure is as follows: the whole water injection pipe comprises a three-way pipe assembly I1, a three-way pipe assembly II 2, a variable lock joint hoop 6 and an oil pipe coupling 8, the three-way pipe assembly I1, the variable lock joint hoop 6 and the oil pipe coupling 8 are sequentially in threaded connection from top to bottom, and steps are arranged on the inner side of the variable lock joint hoop 6; the three-way pipe assembly II 2 is welded on the side surface of the three-way pipe assembly I1, and the inner cavity of the three-way pipe assembly II 2 is communicated with the inner cavity of the three-way pipe assembly I1; the upper end of the tee pipe assembly I1 is provided with a plug 13.

The filtering and flow guiding assembly comprises a primary filtering pipe 3, a secondary filtering pipe 4, a blocking block 5, an upper connecting pipe 7, a lower connecting pipe 11 and a flow guiding pipe 12, the primary filtering pipe 3 is sleeved outside the secondary filtering pipe 4, an annular space 19 is formed between the primary filtering pipe 3 and the secondary filtering pipe 4, the outer side of the lower portion of the primary filtering pipe 3 is in threaded connection with the inner upper portion of the variable lock joint hoop 6, two ends of the secondary filtering pipe 4 extend out of two ends of the primary filtering pipe 3, the upper end of the secondary filtering pipe 4 is abutted to the blocking block 13, the lower end of the secondary filtering pipe 4 is abutted to the blocking block 5, and the blocking block 5 is fixed on the inner step of the variable lock joint hoop 6.

The upper part of the upper connecting pipe 7 penetrates through the blocking block 5 to be communicated with the secondary filter pipe 4, the lower part of the upper connecting pipe 7 is communicated with the upper part of the lower connecting pipe 11 through a control water injection assembly 10, and the lower part of the lower connecting pipe 11 is communicated with the draft tube 12. The outside of the draft tube 12 is provided with a spiral groove for water flow to flow along the spiral groove.

Control water injection assembly 10 includes valve hand wheel 14, connecting seat 15, fixing base 16, pull rod 17, rubber valve 18 and cut apart pipe 9, valve hand wheel 14 and connecting seat 15 threaded connection, connecting seat 15 and fixing base 16 fixed connection, pull rod 17 wears to establish in connecting seat 15 and the 16 inner chambers of fixing base, the one end and the rubber valve 18 of pull rod 17 are connected, the other end and valve hand wheel 14 are connected, realize through rotating valve hand wheel 14 that 16 inside pull rod 17 that link move at the fixing base, drive rubber valve 18 and remove and close and open gradually and cut apart pipe 9 apopores.

The dividing pipe 9 is arranged in the filtering and flow guiding assembly, the axial direction of the dividing pipe 9 is the same as that of the filtering and flow guiding assembly, the upper part of the dividing pipe 9 is connected with the lower part of the upper connecting pipe 7, and the lower part of the dividing pipe 9 is connected with the upper part of the lower connecting pipe 11.

The rubber valve 19 is arranged in the divided pipe 9, and one end of the fixed seat 16 is abutted against the outer side of the divided pipe 9. The structure of the dividing pipe 9 is divided by the middle partition board, two spaces can be formed in one compartment, so that the upper space is filled with water, the lower space is filled with gas, and the structure of the dividing pipe 9 is shown in fig. 2.

The side of the fixed seat 16 is provided with an exhaust hole 20, and the exhaust hole 20 is located at the outer side of the whole water injection pipe and used for exhausting the gas in the oil injection pipe.

The working process of the embodiment is as follows: the water injection filter of the present embodiment is disposed in the above-described connection relationship, and is communicated with the oil pipe. In the water injection filter, the lower end of the tubing coupling 8 is connected to the tubing, the tubing is not shown in the drawing of the embodiment, the lower connection pipe 11 is in the tubing, and water flows out from the upper part of the partition pipe 9 and enters a space formed inside the tubing and outside the lower connection pipe 11.

When water is injected, water flow enters the three-way pipe assembly I1 from the three-way pipe assembly II 2 and sequentially passes through the primary filter pipe 3 and the secondary filter pipe 4, the water flow is stopped in the upper layer of the dividing pipe 9 through the upper connecting pipe 7 after being filtered, the rubber valve 18 is driven to move by operating the valve hand wheel 14 to control the water amount flowing into the lower connecting pipe 11, and the water flowing out of the dividing pipe 9 enters the outer side of the lower connecting pipe 11; the filtered water flow enters the oil pipe along the spiral groove on the outer side of the draft tube 12.

In different situations, the adjustable valve handwheel 14 adjusts the water injection amount to meet the high efficiency and variability of water injection.

In the process, because the draft tube 12 is designed, the outer diameter of the draft tube is designed to be tightly attached to the inner wall of the oil pipe, water flow can only be discharged downwards through the spiral groove of the draft tube 12, and after the water flow passes through the spiral groove of the draft tube 12, the water flow rotates and is injected downwards along the pipe wall. The flow guide pipe 12 is additionally arranged to guide water, so that the contact area between water flow finally injected into the oil pipe and air in the oil pipe is reduced, and large area of water flow and air contact are avoided, and air is not easy to discharge due to water flow extrusion.

The air is discharged from the middle of the oil pipe into the interior of the draft tube 12, enters the lower layer of the dividing tube 9 through the lower connecting tube 11 and is finally discharged from the exhaust hole 20 on the fixed seat 16.

Due to the adoption of the double-layer filtering pipe configuration, namely the double-layer filtering pipe with the annular space 19 consisting of the first filtering pipe 3 and the second filtering pipe 4, the impurities in the injected water are filtered, and the damage of the impurities to the pump is avoided.

The above description is only a preferred embodiment of the present invention, and is not a limitation to the technical solution of the present invention, it should be noted that, further improvements and changes can be made by those skilled in the art on the premise of the technical solution of the present invention, and all such improvements and changes should be covered in the protection scope of the present invention.

Claims (8)

1. A water injection filter which is characterized in that: the water injection device comprises a water injection pipe, a filtering and flow guiding assembly and a control water injection assembly (10), wherein the water injection pipe is integrally sleeved outside the filtering and flow guiding assembly, and the control water injection assembly (10) penetrates through the water injection pipe and is communicated with an inner cavity of the filtering and flow guiding assembly.

2. The water injection filter of claim 1, wherein: the water injection pipe integrally comprises a first three-way pipe assembly (1), a second three-way pipe assembly (2), a variable buckle coupling (6) and an oil pipe coupling (8), the first three-way pipe assembly (1), the variable buckle coupling (6) and the oil pipe coupling (8) are sequentially connected from top to bottom, the second three-way pipe assembly (2) is arranged on the side face of the first three-way pipe assembly (1), and the inner cavity of the second three-way pipe assembly (2) is communicated with the inner cavity of the first three-way pipe assembly (1).

3. The water injection filter of claim 2, wherein: the inner side of the buckling hoop (6) is provided with a step.

4. The water injection filter of claim 1, wherein: the filtering and flow guiding assembly comprises a primary filtering pipe (3), a secondary filtering pipe (4), a blocking block (5), an upper connecting pipe (7), a lower connecting pipe (11) and a flow guiding pipe (12), wherein the primary filtering pipe (3) is sleeved outside the secondary filtering pipe (4), an annular space (19) is formed between the primary filtering pipe (3) and the secondary filtering pipe (4), the outer side of the lower part of the primary filtering pipe (3) is fixedly connected with the inner side of the whole water injection pipe, two ends of the secondary filtering pipe (4) extend out of two ends of the primary filtering pipe (3), the lower end of the secondary filtering pipe (4) is abutted against the blocking block (5), the blocking block (5) is fixed on the inner side of the whole water injection pipe, the upper part of the upper connecting pipe (7) penetrates through the blocking block (5) to be communicated with the secondary filtering pipe (4), the lower part of the upper connecting pipe (7) is communicated with the upper part of the lower connecting pipe (11) through controlling the water, the lower part of the lower connecting pipe (11) is communicated with the draft tube (12).

5. The water injection filter of claim 4, wherein: the outer side of the draft tube (12) is provided with a spiral groove.

6. The water injection filter of claim 1, wherein: the control water injection assembly (10) comprises a valve hand wheel (14), a connecting seat (15), a fixing seat (16), a pull rod (17), a rubber valve (18) and a partition pipe (9), the valve hand wheel (14) is in threaded connection with the connecting seat (15), the connecting seat (15) is fixedly connected with the fixing seat (16), the pull rod (17) penetrates through the inner cavities of the connecting seat (15) and the fixing seat (16), one end of the pull rod (17) is connected with the rubber valve (18), and the other end of the pull rod is connected with the valve hand wheel (14); the dividing pipe (9) is arranged in the filtering and flow guiding assembly, the axial direction of the dividing pipe (9) is the same as the axial direction of the filtering and flow guiding assembly, the rubber valve (18) is arranged in the dividing pipe (9), and one end of the fixed seat (16) is abutted to the outer side of the dividing pipe (9).

7. The water injection filter of claim 6, wherein: the side of the fixed seat (16) is provided with an exhaust hole (20), and the position of the exhaust hole (20) is positioned on the outer side of the whole water injection pipe.

8. The water injection filter of claim 1, wherein: the upper end of the whole water injection pipe is provided with a plug (13).

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