CN209784101U - Sieve tube filter medium erosion experimental device - Google Patents

Abstract

the application provides a screen pipe filter medium erosion experimental device which comprises a screen pipe filter medium module, a water supply module, a sand adding module, a buffering module and a recovery module; the outlet end of the water supply module is connected with the inlet end of the sand adding module and the inlet end of the buffer module, the outlet end of the sand adding module is connected with the inlet end of the buffer module, the outlet end of the buffer module is connected with the inlet end of the sieve tube filter medium module, the outlet end of the sieve tube filter medium module is connected with the recovery module, the modules are connected through pipelines, and stop valves are arranged on the pipelines.

Description

Sieve tube filter medium erosion experimental device

Technical Field

the application relates to the field of, but is not limited to, sieve tube filter medium erosion experiments, in particular to a sieve tube filter medium erosion experiment device.

Background

Mechanical sand control is the most common oil well sand control method in oil fields, while a sieve tube is one of core components of mechanical sand control, and the sieve tube has great influence on sand control quality, cost, oil well yield and the like. The factors that cause screen damage are: the corrosive environment at the bottom of the well, the erosive effect of the sand-containing fluid on the screen filter media and the thermal stress during heat injection, wherein the erosive wear of the sand-containing fluid on the screen filter media is the most major factor causing screen failure. During the production process of the sand-containing fluid, formation sand is gradually deposited on the periphery of the sieve tube, and the sand-carrying fluid erodes the sieve tube. The existing screen pipe filter body damage experimental device still cannot truly simulate the deposition process of formation sand on the periphery of a well bottom screen pipe.

SUMMERY OF THE UTILITY MODEL

The application provides a screen pipe filter medium erosion experimental device which can truly simulate the deposition condition of formation sand on the periphery of a screen pipe at the bottom of a well.

In order to achieve the purpose of the application, the technical scheme adopted by the application is as follows:

The application provides a screen pipe filter medium erosion experimental device which comprises a screen pipe filter medium module, a water supply module, a sand adding module, a buffering module and a recovery module;

the outlet end of the water supply module is connected with the inlet end of the sand adding module and the inlet end of the buffering module, the outlet end of the sand adding module is connected with the inlet end of the buffering module, the outlet end of the buffering module is connected with the inlet end of the sieve tube filter medium module, the outlet end of the sieve tube filter medium module is connected with the recovery module,

The modules are connected through pipelines, and stop valves are arranged on the pipelines.

Compared with the prior art, the method has the following beneficial effects:

The application provides a screen pipe filter medium erosion experimental apparatus, through setting up buffer module, flow into the recovery module behind the sand-laden fluid (grit and water mixture) erosion screen pipe in the sand module, the deposit process of real simulation stratum sand at the bottom of the well screen pipe is peripheral, is favorable to further studying the influence that sand-laden fluid erodees the screen pipe filter body, and then improves the sand control work of oil well. In addition, the screen pipe filter medium erosion experimental apparatus that this application provided structure is simple relatively, and operational reliability is high, and long service life has improved screen pipe filter medium erosion experimental apparatus's practicality greatly.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

drawings

The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter and not to limit the subject matter.

FIG. 1 is a schematic structural diagram of a screen pipe filter medium erosion experimental device according to an embodiment of the present application;

FIG. 2 is a schematic structural view of a screen filter media module according to an embodiment of the present application.

Illustration of the drawings:

1-water supply module, 2-sand adding module, 21-funnel, 22-sand adding tank, 3-buffer module, 31-buffer tank, 4-sieve tube filter medium module, 41-upper flange, 42-lower flange, 43-filter medium, 44-first pressure gauge, 45-second pressure gauge, 46-pressure difference sensor, 47-gasket, 48-bolt, 5-recovery module, 51-water storage tank, 511-buffer ball, 52-sand setting tank, 6-pipeline, 71-first stop valve, 72-second stop valve, 73-third stop valve, 74-fourth stop valve, 75-fifth stop valve and 76-flowmeter.

Detailed Description

To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

the application provides a screen pipe filter medium erosion experimental apparatus, as shown in fig. 1, including screen pipe filter medium module 4, water supply module 1, add sand module 2, buffer module 3, retrieve module 5 and pipeline 6, water supply module 1's exit end links to each other with the entry end that adds sand module 2, add sand module 2's exit end and buffer module 3's entry end and link to each other, buffer module 3's exit end links to each other with screen pipe filter medium module 4's entry end, screen pipe filter medium module 4's exit end links to each other with recovery module 5, water supply module 1 still directly links to each other with buffer module 3 through pipeline 6, be provided with the stop valve on pipeline 6. In the embodiment of the present application, five shut valves are used, that is, a first shut valve 71, a second shut valve 72, a third shut valve 73, a fourth shut valve 74, and a fifth shut valve 75.

The water supply module 1 can select a variable frequency water pump, an outlet of the variable frequency water pump is connected with the sand adding module 2 through a pipeline 6, clean water in the variable frequency water pump is conveyed to the sand adding module 2, an outlet of the sand adding module 2 is connected with the buffer module 3 through the pipeline 6, sand is added into the clean water by the sand adding module 2 to be changed into sand-containing fluid (mixed with water), the sand-containing fluid enters the buffer module 3, the buffer module 3 reduces the flow velocity of the sand-containing fluid and simulates the real situation of downhole fluid, the outlet of the buffer module 3 is connected with the sieve tube filter medium module 4 through the pipeline 6, the sand-containing fluid erodes the sieve tube filter medium module 4, the outlet of the sieve tube filter medium module 4 is connected with the recovery module 5, the sand-containing fluid flows into the recovery module 5 through the sieve tube filter medium module 4 and is collected, and therefore the erosion effect of the sand-containing.

In an exemplary embodiment, as shown in fig. 1, the sand adding module 2 includes a funnel 21 and a sand adding tank 22, the funnel 21 is connected to the sand adding tank 22 through a pipeline 6, and a first stop valve 71 is disposed on the pipeline, and the water supply module 1 is connected to the sand adding tank 22 through the pipeline 6, and a second stop valve 72 is disposed on the pipeline.

The sand is put into the funnel 21, the first stop valve 71 is opened, the sand leaks into the sand adding tank 22, the first stop valve 71 is closed, the second stop valve 72 is opened, the water in the water supply module 1 flows into the sand adding tank 22, and the sand is carried into the buffer module 3 from the sand adding tank 22.

In an exemplary embodiment, as shown in fig. 1, the buffer module 3 comprises a buffer tank 31, the sand adding tank 22 is connected with the buffer tank 31 through a pipeline 6, and a third stop valve 73 is arranged on the pipeline.

A third stop valve 73 is arranged on the pipeline 6 between the buffer tank 31 and the sand adding tank 22, and the sand-containing fluid can enter the buffer tank 31 of the buffer module 3 from the sand adding tank 22 by opening the third stop valve 73. The volume of the buffer tank 31 is larger than that of the sand adding tank 22 so as to achieve the effect of buffering the sand-containing fluid.

In an exemplary embodiment, as shown in fig. 1 and 2, the screen filter media module 4 comprises a first fastening member, a second fastening member and a filter medium 43, wherein each of the first fastening member and the second fastening member is provided with a receiving slot, the first fastening member and the second fastening member are connected through a connecting member and fix the filter medium 43 in the receiving slot, and openings are respectively arranged on corresponding positions of the first fastening member and the second fastening member. The filter media is the cylinder piece, and thickness can be adjusted according to actual conditions, and the outer face of cylinder of filter media closely laminates with the inboard cylinder wall of fastener, and the terminal surface contact department of terminal surface and fastener is closely laminated about the filter media to seal through setting up the gasket, guarantee that sand and water all flows in the recovery module after filtering through the filter media (do not have sand and water and do not pass through the filter media from the clearance department and directly flow in the condition of retrieving the module promptly).

specifically, the first fastening member and the second fastening member may be respectively provided as an upper flange 41 and a lower flange 42, each of the upper flange 41 and the lower flange 42 is provided with a receiving groove, and the upper flange 41 and the lower flange 42 are connected by a bolt 48 to fix the filter medium 43 in the receiving groove. The upper flange 41 and the lower flange 42 are respectively provided with a cylindrical containing groove inside, the filter medium 43 is also cylindrical and is arranged in a large containing groove formed after the upper flange 42 and the lower flange 42 are spliced, gaskets 47 are further arranged at the upper end and the lower end of the filter medium 43, the gaskets 47 can be made of plastics, rubber and the like, and the upper flange 42 and the lower flange 42 are connected through bolts 48 to fix the filter medium 43 and the gaskets 47. The filter medium 43 is the core of the screen, and in this embodiment the filter medium 43 is considered to be the screen. In particular, the filtering medium 43 may be a metal mesh, a metal wool, etc., and is set according to actual requirements (different filtering requirements). The openings are respectively arranged on the corresponding positions of the first fastening piece and the second fastening piece and are used for sand and water to flow into and out of the screen pipe filter medium module 4.

In an exemplary embodiment, as shown in fig. 1 and 2, the first and second fasteners are each provided with a gauge for measuring the pressure differential across the filter media 43.

Specifically, the measuring instrument may be configured as a differential pressure sensor 46, and two measuring ends of the differential pressure sensor 46 are respectively disposed on the upper flange 41 and the lower flange 42, and are communicated with the fluid on the upper side and the lower side of the medium through the through holes disposed on the upper flange 42 and the lower flange 42, so as to measure the differential pressure on the two sides of the filter medium 43. Alternatively, the measuring instrument may be configured as a first pressure gauge 44 and a second pressure gauge 45, the first pressure gauge 44 is disposed on the upper flange 41, and the second pressure gauge 45 is disposed on the lower flange 42, and is respectively communicated with the fluid on the upper and lower sides of the medium through the through holes disposed on the upper and lower flanges 42, so as to measure the pressure on both sides of the filter medium 43. It should be noted that the differential pressure sensor 46 and the first and second pressure gauges 44, 45 may be provided simultaneously for deriving the differential pressure across the filter media 43 in one measurement mode when the other measurement mode fails. By measuring the pressure differential across the filter media 43, the device can be tested at a constant pressure differential.

The sand-containing fluid flows into the screen pipe filter medium module 4 after being decelerated by the buffer tank 31 to erode the screen pipe, and then enters the recovery module 5 after flowing through the screen pipe.

In an exemplary embodiment, as shown in fig. 1, the recovery module 5 comprises a water reservoir 51 and a sand sediment tank 52, the water reservoir 51 is connected to the sand sediment tank 52 by a pipeline 6, and a fourth shut-off valve 74 is provided on the pipeline. Specifically, a buffer ball 511 is provided in the reservoir 51.

after the sand-containing fluid passes through the screen filter medium module 4, the sand-containing fluid firstly enters the water storage tank 51 of the recovery module 5, the buffer ball 511 is freely movably arranged in the water storage tank 51 (blocked at the outlet of the water storage tank 51 in a static state), when the sand-containing fluid enters the water storage tank 51, the sand-containing fluid impacts the buffer ball 511, the buffer ball 511 is moved away from the outlet of the water storage tank 51, and sand and a small amount of water enter the sand settling tank 52. It should be noted that the fourth shut-off valve 74 on the line 6 between the reservoir 51 and the grit chamber 52 should be in an open state at this time.

in an exemplary embodiment, as shown in fig. 1, the water storage tank 51 is provided with a water return line 6 connected to the water supply module 1.

The upper part of the water storage tank 51 is provided with a water return pipeline 6 connected with the water supply module 1, so that water can be recycled, resources are saved, and cost is saved.

In an exemplary embodiment, as shown in fig. 1, the water supply module 1 is also directly connected to the buffer module 3 via a pipeline 6, and a fifth stop valve 75 is provided on the pipeline.

The water supply module 1 is also directly connected with the buffer module 3 through the pipeline 6, after the sand-containing fluid is injected into the buffer tank 31, water in the water supply module 1 can no longer pass through the sand adding tank 22, the second stop valve 72 and the third stop valve 73, and water is directly supplied to the buffer module 3 (the buffer tank 31) through the pipeline 6 connected with the buffer module 3 through the water supply module 1, so that the pressure loss is reduced, and the whole efficiency is favorably improved. And a fifth stop valve 75 is further arranged on the pipeline 6 directly connected with the water supply module 1 and the buffer module 3 and used for controlling the on-off of the pipeline 6.

In an exemplary embodiment, as shown in FIG. 1, a flow meter 76 is provided on the conduit 6 between the screen filter media module 4 and the reservoir 51.

Flow meter 76 is used to monitor the flow of sand-laden fluid from screen filter media module 4 to ensure constant flow throughout the experiment.

the screen pipe filter medium erosion experimental device provided by the embodiment of the application can simulate an erosion experiment of mixed fluid on the screen pipe filter medium under the condition of constant pressure difference or constant flow through the flowmeter 76, the pressure difference sensor 46, the first pressure gauge 44 and the second pressure gauge 45, collect experimental sand filtered under the condition of constant pressure or flow, and accordingly obtain the erosion resistance performance of the screen pipe under different constant pressures and constant flows.

The application provides a screen pipe filter medium erosion experimental apparatus, its operating procedure can be as follows:

a) Opening stop valves on pipelines 6 from the water supply module 1 to the sand adding module 2, and conveying clean water to an inlet end of the sand adding module 2 to enable sand water after sand adding to flow into the buffer module 3;

b) Closing a stop valve on a pipeline 6 from the water supply module 1 to the sand adding module 2, opening the stop valve on the pipeline 6 from the water supply module 1 to the buffer module 3, and conveying clear water to the inlet end of the buffer module 3 so that sand water flows through the sieve tube filter medium module 4 and enters the recovery module 5;

c) The sand in the filter media and recovery module was analyzed.

In some embodiments, the experimental method may employ the following steps:

1) Opening the first stop valve 71 and adding sand to the sand adding tank 22 through the hopper 21;

2) Closing the first stop valve 71, opening the second stop valve 72 and the third stop valve 73, starting the water supply module 1, and adding water into the buffer tank 31 through the sand adding tank 22;

3) Stopping the water supply module 1, closing the second stop valve 72 and the third stop valve 73, and opening a fifth stop valve 75 on the pipeline 6 directly connecting the water supply module 1 and the buffer module 3;

4) Starting the water supply module 1 to enable the mixed liquid of water and sand to enter the water storage tank 51 through the sieve tube filter medium module 4;

5) the fourth shut-off valve 74 is opened to allow sand and a portion of the water to enter the sand depositing box 52, and the sand in the sand depositing box 52 is collected and analyzed while the filter medium eroded by the sand water is analyzed for damage.

Wherein, water supply module 1 can adopt the frequency conversion water pump.

in the description of the present application, it should be noted that the terms "plurality" and "a plurality" refer to two or more, and the directions or positional relationships indicated by "upper", "lower", "one end", "the other end", and the like are based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the structures referred to have a specific direction, are configured and operated in a specific direction, and thus, cannot be construed as limiting the present application.

In the description of the embodiments of the present application, unless expressly stated or limited otherwise, the terms "connected," "connected," and "mounted" are to be construed broadly, e.g., the term "connected" may be a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

the embodiments described herein are exemplary rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.

The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in this application may also be combined with any conventional features or elements to form a unique inventive concept as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive aspects to form yet another unique inventive aspect, as defined by the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.

Further, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other orders of steps are possible as will be understood by those of ordinary skill in the art. Therefore, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Further, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.

Claims (9)

1. A screen pipe filter medium erosion experimental device is characterized by comprising a screen pipe filter medium module, a water supply module, a sand adding module, a buffering module and a recovery module;

The outlet end of the water supply module is connected with the inlet end of the sand adding module and the inlet end of the buffering module, the outlet end of the sand adding module is connected with the inlet end of the buffering module, the outlet end of the buffering module is connected with the inlet end of the sieve tube filter medium module, the outlet end of the sieve tube filter medium module is connected with the recovery module,

The modules are connected through pipelines, and stop valves are arranged on the pipelines.

2. the screen filter erosion experimental apparatus of claim 1, wherein the screen filter module comprises a first fastener, a second fastener, and a filter medium,

The first fastening piece and the second fastening piece are both provided with accommodating grooves, the first fastening piece and the second fastening piece are connected through a connecting piece and fix the filter medium in the accommodating grooves, and openings are respectively formed in corresponding positions of the first fastening piece and the second fastening piece.

3. The screen pipe filter medium erosion experimental facility of claim 2, wherein the first fastening member and the second fastening member are respectively provided with a measuring instrument for measuring a differential pressure across the filter medium.

4. the screen pipe filter medium washout experiment device of claim 1, wherein the sand adding module comprises a funnel and a sand adding tank, the funnel is connected with the sand adding tank through a pipeline, and a first stop valve is arranged on the pipeline,

the water supply module is connected with the sand adding tank through a pipeline, and a second stop valve is arranged on the pipeline.

5. The screen pipe filter media washout test apparatus of claim 4, wherein the buffer module includes a buffer tank having a volume greater than a volume of the sand addition tank,

The buffer tank is connected with the sand adding tank through a pipeline, and a third stop valve is arranged on the pipeline.

6. The screen pipe filter medium erosion experimental facility as claimed in claim 1, wherein the recovery module comprises a water storage tank and a sand settling tank, the water storage tank is connected with the sand settling tank through a pipeline, and a fourth stop valve is arranged on the pipeline.

7. the screen filter media washout experiment apparatus of claim 6, wherein a damping ball is disposed within the reservoir, the damping ball being freely movable within the reservoir.

8. The screen pipe filter medium erosion experimental facility as claimed in claim 6, wherein a water return pipeline is arranged on the water storage tank and connected with the water supply module.

9. The screen pipe filter medium erosion experimental facility of claim 1, wherein: and a fifth stop valve is arranged on a pipeline which is directly connected with the water supply module and the buffer module.