CN210460632U - Sand paving device considering fracturing fluid filtration and wall surface roughness - Google Patents
Sand paving device considering fracturing fluid filtration and wall surface roughness Download PDFInfo
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- CN210460632U CN210460632U CN201921216964.4U CN201921216964U CN210460632U CN 210460632 U CN210460632 U CN 210460632U CN 201921216964 U CN201921216964 U CN 201921216964U CN 210460632 U CN210460632 U CN 210460632U
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Abstract
The utility model discloses a sand-paving device considering fracturing fluid filtration and wall roughness, which comprises a sand-mixing tank, a preposed liquid tank, a pressure pump, a waste liquid pool and a visual sand-paving device, wherein the inlet end of the pressure pump is connected with the sand-mixing tank and the preposed liquid tank, the outlet end of the pressure pump is connected with the visual sand-paving device, and the waste liquid pool is arranged at the lower end of the visual sand-paving device; the visual sanding device comprises a simulation shaft and a frame, the upper end face and the lower end face of the frame are sealed, an organic glass plate and an artificial rock plate are arranged on the front end face and the rear end face of the frame respectively, the simulation shaft is installed at the right end of the frame, a perforation which is communicated with the inside of the frame is vertically arranged on the simulation shaft, and one end, away from the simulation shaft, of the frame is provided with a liquid discharge port. The utility model has the advantages that the organic glass plate is arranged on the front side, and the artificial rock plate is arranged on the back side, so that the visualization of the experimental process is ensured, and the simulated crack is closer to the on-site crack characteristic; the utility model discloses an artifical rock plate replaces the organic glass board, reaches the filtration effect.
Description
Technical Field
The utility model relates to a hydraulic fracturing experimental apparatus technical field specifically relates to a consider sanding device of fracturing fluid filtration and wall roughness.
Background
The shale gas development in China faces the problems of complex underground geological conditions, very low porosity and permeability of a shale reservoir, very low natural yield and recovery rate of shale gas and the like, and the shale gas exploitation at present mainly adopts a slickwater fracturing technology. The main idea is to extrude a fracture network taking main fractures as a main part in a reservoir and fill the fracture network with proppant to support the fracture network, and after the pump is stopped and pressure is released, the fracture is closed on the proppant under the action of a field stress field in the field, and the fracture area which is not filled with the proppant is closed again to become invalid fractures. That is, the proppant's laid morphology is essentially the final fractured fracture morphology. Therefore, the research on the migration and sedimentation rule of the proppant in the fracture is significant for optimizing the sand laying shape in the fracture and improving the fracturing transformation effect.
In the prior art, an organic glass plate is firstly adopted by Babcock in 1967 to visually research the laying rule of a propping agent in a crack, then a sequence screen is drawn by the experimental research of the laying rule of the propping agent by a visualization device, and a large visualization single-slit device, a complex mesh sewing device and the like are designed by numerous researchers and are closer to the actual crack characteristics on site. The utility model discloses consider fracturing fluid filtration and wall roughness, combine together visual organic glass board and artificial rock plate, when satisfying visual observation, introduce filtration and coarse wall, simulate on-the-spot crack characteristic more accurately, observe the proppant and lay the migration law in the crack.
SUMMERY OF THE UTILITY MODEL
To the problem, the utility model provides a consider sanding device of fracturing fluid filtration and wall roughness for simulation hydraulic fracturing in-process fracturing fluid filtration and wall roughness are to proppant migration and are laid the influence law.
The utility model adopts the following technical proposal:
a sand paving device considering fracturing fluid filtration and wall surface roughness comprises a sand mixing tank, a preposed liquid tank, a pressure pump, a waste liquid pool and a visual sand paving device, wherein the inlet end of the pressure pump is connected with the sand mixing tank and the preposed liquid tank, the outlet end of the pressure pump is connected with the visual sand paving device, and the waste liquid pool is placed at the lower end of the visual sand paving device;
the visual sanding device comprises a simulation shaft and a frame, the upper end face and the lower end face of the frame are sealed, an organic glass plate and an artificial rock plate are arranged on the front end face and the rear end face of the frame respectively, the simulation shaft is installed at the right end of the frame, a perforation which is communicated with the inside of the frame is vertically arranged on the simulation shaft, and one end, away from the simulation shaft, of the frame is provided with a liquid discharge port.
Preferably, a metal frame plate is arranged between the artificial rock plate and the frame, and the artificial rock plate is embedded on the metal frame plate.
Preferably, a sealing rubber strip is arranged at the contact position of the artificial rock plate and the metal frame plate.
Preferably, the rear end face of the frame is provided with a reinforcing rib.
Preferably, lamps are vertically arranged at 4 corners of a cavity defined by the simulation shaft, the artificial rock plate, the frame and the liquid outlet.
Preferably, the organic glass plate is provided with scale marks, and a through hole is transversely arranged below the organic glass plate and is used as a cleaning hole.
Preferably, a through hole is vertically arranged on the liquid outlet and serves as a liquid outlet, and a liquid outlet pipe is connected to the liquid outlet.
The utility model has the advantages that:
1. the utility model has the advantages that the organic glass plate is arranged on the front side, and the artificial rock plate is arranged on the back side, so that the visualization of the experimental process is ensured, and the simulated crack is closer to the on-site crack characteristic;
2. the utility model discloses an artifical rock plate replaces the organic glass board, reaches the filtration effect.
Drawings
In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description only relate to some embodiments of the present invention, and are not intended to limit the present invention.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view taken along line A-A of the present invention;
FIG. 3 is a schematic structural view of the metal frame plate of the present invention;
fig. 4 is a schematic view of the connection structure of the artificial rock plate and the metal frame plate of the present invention.
Shown in the figure:
the system comprises a stirrer, a sand mixing tank, a valve, a front liquid tank, a booster pump, a flow meter, a simulation shaft, a lamp, a glass plate, a bolt, a simulation shaft, a lamp, a glass plate and a bolt, wherein the stirrer is 1-the stirrer, the sand mixing tank is 2-the valve, the front liquid tank is 4-the booster pump is 5-the flow meter is 6-the simulation shaft is;
11-cleaning hole, 12-scale mark, 13-waste liquid pool, 14-frame, 15-metal frame plate, 16-artificial rock plate, 17-liquid discharge port, 18-sealing rubber strip, 19-reinforcing rib and 20-perforation;
21-drain hole, 22-drain pipe.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1 to 3, the sand-spreading device considering the filtration loss of fracturing fluid and the roughness of a wall surface comprises a sand-mixing tank 2, a preposed liquid tank 4, a pressure pump 5, a waste liquid tank 13 and a visual sand-spreading device, wherein the inlet end of the pressure pump 5 is connected with the sand-mixing tank 2 and the preposed liquid tank 4, the outlet end is connected with the upper end of a simulation shaft 7 of the visual sand-spreading device, and the waste liquid tank 13 is arranged at the lower end of the visual sand-spreading device; the sand mixing tank 2 and the preposed liquid tank 4 are both internally provided with a stirrer 1, the lower end of the pipeline connected with the pressure pump 5 is provided with a valve 3, and the pipeline connected with the simulation shaft 7 of the pressure pump 5 is provided with a flowmeter 6.
The visual sand paving device comprises a simulation shaft 7 and a frame 14, the upper end face and the lower end face of the frame 14 are sealed by steel plates, the front end face and the rear end face of the frame 14 are respectively provided with an organic glass plate 9 and an artificial rock plate 16, the organic glass plate 9 and the frame 14 are fixed through bolts 10 and are sealed by sealing rubber strips 18, scale marks 12 are marked on the organic glass plate 9, the filtration process is convenient to observe, a through hole is transversely arranged below the organic glass plate to serve as a cleaning hole 11, and a cleaning opening is sealed by a sealing plug during an experiment; the simulation shaft 7 is arranged at the right end of the frame 14, a perforation 20 communicated with the inside of the frame 14 is vertically arranged on the simulation shaft 7, the diameter of the perforation 20 is 9mm, a liquid discharge port 17 is arranged at one end, far away from the simulation shaft 7, of the frame 14, a through hole is vertically arranged on the liquid discharge port 17 and serves as a liquid discharge hole 21, a liquid discharge pipe 22 is connected onto the liquid discharge hole 21, and a flowmeter 6 is arranged at the lower end of the liquid discharge pipe 22.
Be equipped with metal framed board 15 between artificial rock board 16 and the frame 14, metal framed board 15 is fixed with frame 14 through bolt 10, metal framed board 15 is formed by the angle steel welding, artificial rock board 16 is inlayed on metal framed board 15, and artificial rock board 16 uses joint strip 18 with metal framed board 15 contact department sealed, prevents to carry sand liquid from the gap loss, influences the experimental result. The rear end face of the frame 14 is provided with a reinforcing rib 19 to prevent the sand-carrying liquid from flowing out of the gap due to the deformation of the metal frame plate 15 in the experiment pressurization process. 4 corners of a cavity surrounded by the simulation shaft 7, the artificial rock plate 16, the frame 14 and the liquid discharge port 17 are surrounded by glass plates to form a triangular prism space, and the joints of the glass plates are sealed by sealant, so that sand-carrying liquid and the like are prevented from entering the triangular prism space, and electric shock is prevented. The lamp 8 is arranged in the space, so that the photographing effect is clearer during experiment photographing; simultaneously, the design of triangle-shaped can prevent effectively that the sand-carrying fluid from piling up here, influencing the accuracy of experiment.
The utility model discloses a theory of operation is: in the hydraulic fracturing experiment process, along with the sequential injection of the pad fluid and the sand-carrying fluid into the fracture, the fracturing fluid begins to be filtered outwards on the surface of the artificial rock plate, and meanwhile, the wall surface is rough, so that certain influence is generated on the settlement of proppant particles, and the actual fracture characteristics on site are simulated more accurately.
The utility model discloses when carrying out the experiment, concrete implementation step is as follows:
1) designing an experimental scheme, and selecting the types of fracturing fluid and proppant, the mesh number of the proppant and the like according to the experimental scheme;
2) checking the air tightness of the device, checking whether settled sand, effusion and the like exist, starting an experiment after cleaning is finished, and adjusting the position of a camera;
3) preparing a pad fluid and a sand-carrying fluid, mixing the sand-carrying fluid and a propping agent in proportion, and uniformly mixing in a sand mixing tank through a stirrer;
4) starting an experiment, turning on a lamp, turning on a camera shooting function, setting discharge capacity, pumping the pad fluid into a visualization device through a pressure pump by controlling a valve switch, and when the crack is filled with the pad fluid, opening a sand-carrying fluid valve, and pumping the sand-carrying fluid and the propping agent into the crack;
5) after pumping, closing the pressure pump, observing the shape of the sand bank after the sand bank is stabilized, and measuring and recording each parameter;
6) and the cleaning device alternately opens the inlet/outlet cleaning ports, circulates for a plurality of times until the cleaning is finished, and prepares the next group after the experiment is finished.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.
Claims (7)
1. A sand paving device considering fracturing fluid filtration and wall surface roughness is characterized by comprising a sand mixing tank (2), a preposed liquid tank (4), a pressure pump (5), a waste liquid pool (13) and a visual sand paving device, wherein the inlet end of the pressure pump (5) is connected with the sand mixing tank (2) and the preposed liquid tank (4), the outlet end of the pressure pump is connected with the visual sand paving device, and the waste liquid pool (13) is arranged at the lower end of the visual sand paving device;
visual sanding device is including simulation pit shaft (7), frame (14), end face seal about frame (14), preceding, rear end face are equipped with organic glass board (9) and artificial rock board (16) respectively, install at frame (14) right-hand member simulation pit shaft (7), vertically on simulation pit shaft (7) be equipped with perforation (20) of the inside intercommunication of frame (14), one of frame (14) keeping away from simulation pit shaft (7) is served and is equipped with drain (17).
2. A sanding device considering both fracturing fluid loss and wall roughness as in claim 1 wherein a metal frame plate (15) is provided between the artificial rock plate (16) and the frame (14), the artificial rock plate (16) being embedded in the metal frame plate (15).
3. A sanding device considering fracturing fluid loss and wall roughness as in claim 2 wherein the artificial slates (16) are provided with sealing strips (18) in contact with the metal frame plate (15).
4. A sanding device for considering fracturing fluid loss and wall roughness as in claim 1 wherein the rear end face of the frame (14) is provided with reinforcing ribs (19).
5. A sanding device considering fracturing fluid loss and wall roughness as claimed in claim 1, characterized in that lamps (8) are vertically arranged at 4 corners of the cavity enclosed by the simulated shaft (7), the artificial rock plate (16), the frame (14) and the liquid discharge port (17).
6. A sanding device considering fracturing fluid loss and wall roughness as per claim 1, characterized in that the plexiglass plate (9) is provided with scale marks (12) and a through hole as a cleaning hole (11) is provided in the lower transverse direction.
7. A sanding device considering fracturing fluid loss and wall roughness as claimed in claim 1 wherein the drainage port (17) is vertically provided with a through hole as a drainage hole (21), and a drainage pipe (22) is connected to the drainage hole (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921216964.4U CN210460632U (en) | 2019-07-30 | 2019-07-30 | Sand paving device considering fracturing fluid filtration and wall surface roughness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921216964.4U CN210460632U (en) | 2019-07-30 | 2019-07-30 | Sand paving device considering fracturing fluid filtration and wall surface roughness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210460632U true CN210460632U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921216964.4U Expired - Fee Related CN210460632U (en) | 2019-07-30 | 2019-07-30 | Sand paving device considering fracturing fluid filtration and wall surface roughness |
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| CN (1) | CN210460632U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228032A (en) * | 2020-11-06 | 2021-01-15 | 西南石油大学 | Visual intelligent proppant pulse injection sand paving experimental device and method |
| CN113404479A (en) * | 2021-08-19 | 2021-09-17 | 西南石油大学 | Proppant laying visual experiment device capable of dynamically adjusting seam width and using method thereof |
-
2019
- 2019-07-30 CN CN201921216964.4U patent/CN210460632U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228032A (en) * | 2020-11-06 | 2021-01-15 | 西南石油大学 | Visual intelligent proppant pulse injection sand paving experimental device and method |
| CN113404479A (en) * | 2021-08-19 | 2021-09-17 | 西南石油大学 | Proppant laying visual experiment device capable of dynamically adjusting seam width and using method thereof |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200505 Termination date: 20210730 |
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| CF01 | Termination of patent right due to non-payment of annual fee |