CN112495064B - A shale gas horizontal cyclone desander - Google Patents

Abstract

The invention belongs to the technical field of shale gas desanding and dewatering, and particularly relates to a horizontal cyclone desander for shale gas. The technical scheme is as follows: a horizontal cyclone desander for shale gas comprises a horizontal cylinder, wherein one side of the horizontal cylinder is connected with a separation tower, the other side of the horizontal cylinder is provided with a medium outlet, a plurality of cyclone mechanisms are connected in the separation tower, the separation tower is provided with a medium inlet, and the medium inlet is communicated with the cyclone mechanisms; the bottom of the horizontal cylinder is connected with a liquid collecting bag; the horizontal type barrel is characterized in that a high-position baffle and a low-position baffle are arranged in the horizontal type barrel at intervals, the high-position baffle is sealed with the top of the horizontal type barrel, and a gap is formed between the low-position baffle and the top of the horizontal type barrel. The horizontal cyclone desander for shale gas provided by the invention has the advantages of high separation precision and reduced equipment damage.

Description

A shale gas horizontal cyclone desander

technical field

The invention belongs to the technical field of shale gas desanding and water removal, and in particular relates to a shale gas horizontal cyclone desander.

Background technique

At present, the hydraulic fracturing method is commonly used in shale gas exploitation, which requires a large amount of water mixed with mud sand and a small amount of chemical substances to be injected into the well. The main component of silt is 30-100 mesh ceramsite, which has a large quantity, high hardness, and a large amount of sand added to a single well. If this part of ceramsite and silt are not separated, it will cause serious damage to downstream equipment and pipelines. The erosion will affect the safe and smooth operation of the system, so effective sand removal is very important.

The existing shale gas de-sanding and de-watering process generally adopts two stages: in the first stage, the sand removal device is used for coarse filtration. In this stage, the pressure is high (26MPa) and the flow rate is high, and the coarse sand and gravel in the fluid are separated; The gas-liquid separator performs fine filtration. At this stage, the pressure is low (8.5MPa) and the flow rate is low, and the fine sand and water are separated from the fluid, which completely solves the problem of sand removal and water removal.

According to the field practice, the existing sand removal and water removal have the following deficiencies:

In the first and first stages, a sand remover is used. After the sand is filled with gravel, manual sand removal is required. However, due to the small volume of the sand remover, the sand removal operation time is not easy to control, the sand removal operation is frequent, and the on-site workers are labor-intensive.

Second, because of the large amount of water and high pressure, the sand remover generally adopts the method of filtration to remove sand. Such separation elements are easily damaged, and the separation elements need to be cleaned after a period of use, which increases the labor intensity of workers.

Third, pipelines are used to connect the desander and the separator. Since there is still a part of unseparated fine gravel after the desander, this part of the gravel will erode the pipeline between the desander and the separator. , there has been a pipeline puncture leak at the scene, and there is a safety risk.

Fourth, in order to avoid sand discharge and shut-in operations, generally two desanders are designed as backups for each other, so as to achieve the purpose of sand discharge without shut-in, so that the number of sand removers, valves and instruments will increase and the floor space will increase. , investment increases.

SUMMARY OF THE INVENTION

In order to solve the above problems existing in the prior art, the purpose of the present invention is to provide a horizontal cyclone desander for shale gas with high separation precision and reduced equipment damage.

The technical scheme adopted in the present invention is:

A horizontal cyclone desander for shale gas comprises a horizontal cylinder, one side of the horizontal cylinder is connected with a separation tower, the other side of the horizontal cylinder is provided with a medium outlet, and the separation tower is connected with several Cyclone mechanism, the separation tower is provided with a medium inlet, and the medium inlet is communicated with several cyclone mechanisms; the bottom of the horizontal cylinder is connected with a liquid collecting bag; The high baffle is sealed with the top of the horizontal cylinder, and a gap is provided between the low baffle and the top of the horizontal cylinder.

The shale gas containing sand and water enters the separation tower through the medium inlet in the middle of the separation tower, and the shale gas is roughly divided by the cyclone mechanism. Due to the action of cyclone centrifugal force and gravity, a large amount of liquid and gravel flow from the lower opening of the cyclone mechanism into the liquid collection bag at the lower part of the horizontal cylinder, and gas and a small amount of impurities enter the horizontal cylinder. When the gas is deflected between the baffles when passing through the high-level baffle and the low-level baffle, the impurities in the gas can be effectively blocked by the low-level baffle and the high-level baffle. The lighter impurities fall into the bottom of the horizontal cylinder due to the action of gravity, and the clean gas enters the rear end of the horizontal cylinder and is discharged from the medium outlet.

Since the cyclone mechanism can separate a large amount of liquid and gravel, there are less impurities in the gas entering the horizontal cylinder. The high-level baffle and the low-level baffle can fully block the impurities in the gas, so that the present invention can fully purify the shale gas, and the separation precision is high.

The gas separated by the cyclone mechanism contains less impurities, and the impurities can be fully blocked by the high baffle and the low baffle, which avoids the problem that the filter element is easily damaged when the sand is removed by filtration. The separation tower of the present invention is connected to the horizontal cylinder, which avoids the situation that the pipeline between the desander and the separator is easily eroded when they are used.

As a preferred solution of the present invention, the lower part of the liquid collecting bag is provided with a sand discharge port, the liquid collecting bag is located under the separation tower, and the horizontal cylinder is also provided with a water blocking plate, and the water blocking plate is located between the separation tower and the medium outlet , the bottom of the horizontal cylinder is provided with a drainage outlet, and the drainage outlet is located on the side of the water baffle away from the sand outlet.

The water and gravel in the horizontal cylinder gradually settle into layers, the lighter water turns over the baffle and flows out from the drain, and the heavier gravel is always in the front of the horizontal cylinder and can be discharged from the sand outlet. Therefore, the present invention can sufficiently separate water and grit in the gas.

As a preferred solution of the present invention, two partitions are arranged in the separation tower, the cyclone mechanism is fixed between the two partitions, and the medium inlet is located in the area between the two partitions on the separation tower. The two partition plates and the cyclone mechanism form a closed space, and the medium inlet is located in the area between the two partition plates on the separation tower, then the shale gas containing water and gravel can enter the cyclone mechanism completely after entering the separation tower from the medium inlet. inside, to ensure that the shale gas can be fully separated by the cyclone mechanism.

As a preferred solution of the present invention, the cyclone mechanism includes an outer cylinder, the outer cylinder is fixed between two partition plates, the outer cylinder is sleeved with an inner cylinder, and an inlet pipe is fixed on the inner cylinder, and the other end of the inlet pipe extends from the outside The cylinder extends, the inner cylinder is provided with a guide plate, the lower end of the inner cylinder and the lower end of the outer cylinder are connected with the horizontal cylinder, the upper end of the inner cylinder is open, and the upper end of the outer cylinder is sealed; the lower end of the outer cylinder extends to the The upper part of the horizontal cylinder, the lower end of the inner cylinder extends to the lower part of the horizontal cylinder. The shale gas containing water and gravel enters the inner cylinder from the inlet pipe, the guide vane uses the action of swirl to discharge a large amount of liquid and gravel in the shale gas from the lower part of the inner cylinder, and the shale gas containing a small amount of impurities enters through the upper part of the inner cylinder outer cylinder. After a large amount of liquid and gravel are discharged from the inner cylinder, they are directly discharged into the liquid collecting bag, while the shale gas containing a small amount of impurities is discharged from the outer cylinder into the horizontal cylinder.

As a preferred solution of the present invention, the shape of the upper end of the outer cylinder is arc-shaped. The gas is diverted through the arc-shaped top of the outer cylinder, so that the gas can enter the outer cylinder and improve the separation effect.

As a preferred solution of the present invention, a water-side level gauge and a sand-side level gauge are installed in the horizontal cylinder. The side of the flap away from the drain. The water-side liquid level gauge and the sand-side liquid level gauge monitor the liquid level on the corresponding side respectively, and when the liquid level reaches a certain height, open the drain port to discharge the water.

As a preferred solution of the present invention, a locator for monitoring the position of sand and gravel is also installed in the horizontal cylinder, and the locator is located on the side of the water baffle away from the medium outlet. The locator can monitor the height of the gravel in the horizontal cylinder. When the gravel reaches a certain height, the sand outlet will be opened to discharge the gravel.

As a preferred solution of the present invention, a recoil pipe is also installed in the horizontal cylinder, the locator is located on the side of the baffle plate away from the medium outlet, the recoil pipe is connected with a recoil pipe joint, and the backflush pipe joint is The other end protrudes from the bottom of the horizontal cylinder. The recoil pipe can recoil the horizontal cylinder, so that the grit in the horizontal cylinder can be completely discharged.

As a preferred solution of the present invention, a wire mesh demister is connected to the medium outlet of the horizontal cylinder. The wire mesh demister can filter the shale gas excessively to ensure the cleanliness of the shale gas discharged from the outlet.

As a preferred solution of the present invention, both ends of the horizontal cylinder are fixed with heads, and a manhole is provided on the head close to the medium outlet to facilitate maintenance and replacement of the wire mesh demister.

The beneficial effects of the present invention are:

1. The shale gas containing sand and water of the present invention enters the separation tower through the medium inlet in the middle of the separation tower, and the shale gas is roughly divided by the cyclone mechanism. Due to the action of cyclone centrifugal force and gravity, a large amount of liquid and gravel flow from the lower opening of the cyclone mechanism into the liquid collection bag at the lower part of the horizontal cylinder, and gas and a small amount of impurities enter the horizontal cylinder. When the gas is deflected between the baffles when passing through the high-level baffle and the low-level baffle, the impurities in the gas can be effectively blocked by the low-level baffle and the high-level baffle. The lighter impurities fall into the bottom of the horizontal cylinder due to the action of gravity, and the clean gas enters the rear end of the horizontal cylinder and is discharged from the medium outlet. Since the cyclone mechanism can separate a large amount of liquid and gravel, there are less impurities in the gas entering the horizontal cylinder. The high-level baffle and the low-level baffle can fully block the impurities in the gas, so that the present invention can fully purify the shale gas, and the separation precision is high.

2. The gas separated by the cyclone mechanism contains less impurities, and the impurities can be fully blocked by the high baffle and the low baffle, which avoids the problem that the filter element is easily damaged when the sand is removed by filtration. The separation tower of the present invention is connected to the horizontal cylinder, which avoids the situation that the pipeline between the desander and the separator is easily eroded when they are used.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Figure 2 is a schematic structural diagram of a separation tower and a cyclone mechanism.

In the figure, 1-horizontal cylinder; 2-separation tower; 3-cyclone mechanism; 4-liquid collecting bag; 5-water baffle; 6-backflushing pipe; 7-wire mesh demister; 8-head ; 11- medium outlet; 12- high baffle; 13- low baffle; 14- sand outlet; 15- drain; 16- water side level gauge; 17- sand side level gauge; 18- level gauge ; 21- medium inlet; 22- baffle; 31- outer cylinder; 32- inner cylinder; 33- inlet pipe; 34- guide plate; 61- backflushing pipe joint; 81- manhole.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

As shown in FIG. 1 , the shale gas horizontal cyclone desander in this embodiment includes a horizontal cylinder 1 , one side of the horizontal cylinder 1 is connected with a separation tower 2 , and the other side of the horizontal cylinder 1 is connected with a separation tower 2 . A medium outlet 11 is provided on the side, a number of cyclone mechanisms 3 are connected in the separation tower 2, a medium inlet 21 is provided on the separation tower 2, and the medium inlet 21 is communicated with a number of cyclone mechanisms 3; the bottom of the horizontal cylinder 1 is connected with a collector. Liquid pack 4; the horizontal cylinder 1 is provided with a high baffle 12 and a low baffle 13 at intervals, the high baffle 12 is sealed with the top of the horizontal cylinder 1, and the low baffle 13 is sealed with the top of the horizontal cylinder 1. There is a gap between the tops.

The shale gas containing sand and water enters the separation tower 2 through the medium inlet 21 in the middle of the separation tower 2, and the cyclone mechanism 3 roughly divides the shale gas. Due to the action of cyclone centrifugal force and gravity, a large amount of liquid and gravel flow from the lower opening of the cyclone mechanism 3 into the liquid collection bag 4 in the lower part of the horizontal cylinder 1, and gas and a small amount of impurities enter the horizontal cylinder 1 through. When the gas passes through the high-level baffle 12 and the low-level baffle 13 , the gas is deflected between the baffles, so that impurities in the gas can be effectively blocked by the low-level baffle 13 and the high-level baffle 12 . The lighter impurities fall into the bottom of the horizontal cylinder 1 due to the action of gravity, and the clean gas enters the rear end of the horizontal cylinder 1 and is discharged from the medium outlet 11 .

Since the cyclone mechanism 3 can separate a large amount of liquid and gravel, there are less impurities in the gas entering the horizontal cylinder 1 . The high-level baffle 12 and the low-level baffle 13 can fully block impurities in the gas, so that the present invention can fully purify the shale gas, and the separation precision is high.

The gas separated by the cyclone mechanism 3 contains less impurities, and the impurities can be fully blocked by the high baffle 12 and the low baffle 13, avoiding the problem that the filter element is easily damaged when the sand is removed by filtration. The separation tower 2 of the present invention is connected to the horizontal cylinder 1 to avoid the situation that the pipeline between the desander and the separator is easily eroded when they are used.

In order to separate water and gravel, the lower part of the liquid collecting bag 4 is provided with a sand discharge port 14, the liquid collecting bag 4 is located under the separation tower 2, and the horizontal cylinder body 1 is also provided with a water baffle 5, and the water baffle plate 5 is located between the separation tower 2 and the medium outlet 11, the bottom of the horizontal cylinder 1 is provided with a water outlet 15, and the water outlet 15 is located on the side of the water baffle 5 away from the sand outlet 14.

The water and gravel in the horizontal cylinder 1 gradually settle into layers, the lighter water turns over the baffle 5 and flows out from the drain 15, and the heavier gravel is always in the front of the horizontal cylinder 1, which can be discharged by the sand Port 14 discharges. Therefore, the present invention can sufficiently separate water and grit in the gas.

As shown in FIG. 2 , the separation tower 2 is provided with two partitions 22 , the cyclone mechanism 3 is fixed between the two partitions 22 , and the medium inlet 21 is located in the area between the two partitions 22 on the separation tower 2 . The two partitions 22 and the cyclone mechanism 3 form a closed space, and the medium inlet 21 is located in the area between the two partitions 22 on the separation tower 2, then the shale gas containing water and gravel enters the separation tower 2 from the medium inlet 21 After that, it can completely enter into the cyclone mechanism 3 to ensure that the shale gas can be fully separated by the cyclone mechanism 3 .

Further, the cyclone mechanism 3 includes an outer cylinder 31, the outer cylinder 31 is fixed between the two partition plates 22, the outer cylinder 31 is sleeved with an inner cylinder 32, and an inlet pipe 33 is fixed on the inner cylinder 32, and the inlet pipe 33 The other end of the inner cylinder 32 protrudes from the outer cylinder 31, the inner cylinder 32 is provided with a guide plate 34, the lower end of the inner cylinder 32 and the lower end of the outer cylinder 31 are both communicated with the horizontal cylinder 1, the upper end of the inner cylinder 32 is open, and the outer cylinder is open. The upper end of the outer cylinder 31 is sealed; the lower end of the outer cylinder 31 extends to the upper part of the horizontal cylinder 1 , and the lower end of the inner cylinder 32 extends to the lower part of the horizontal cylinder 1 . The shale gas containing water and gravel enters the inner cylinder 32 from the inlet pipe 33, the guide vane 34 discharges a large amount of liquid and gravel in the shale gas from the lower part of the inner cylinder 32 by the action of the swirling flow, and the shale gas containing a small amount of impurities passes through the inner cylinder 32. The upper part of the inner cylinder 32 enters the outer cylinder 31 . After a large amount of liquid and gravel are discharged from the inner cylinder 32 , they are directly discharged into the liquid collecting bag 4 , while the shale gas containing a small amount of impurities is discharged into the horizontal cylinder 1 from the outer cylinder 31 .

The shape of the upper end of the outer cylinder 31 is arc-shaped. The gas is diverted through the arc-shaped top of the outer cylinder 31, so that the gas can enter the outer cylinder 31, and the separation effect is improved.

In order to monitor the liquid level conveniently, a water-side liquid level gauge 16 and a sand-side liquid level gauge 17 are installed in the horizontal cylinder 1, and the water-side liquid level gauge 16 is located on the side of the water baffle 5 away from the sand discharge port 14, The sand side level gauge 17 is located on the side of the water baffle 5 away from the water outlet 15 . The water-side liquid level gauge 16 and the sand-side liquid level gauge 17 monitor the liquid level on the corresponding side respectively, and when the liquid level reaches a certain height, the water outlet 15 is opened to discharge the water.

In order to conveniently monitor the height of the gravel, a positioner 18 for monitoring the position of the gravel is also installed in the horizontal cylinder 1 , and the positioner 18 is located on the side of the water baffle 5 away from the medium outlet 11 . The locator 18 can monitor the height of the gravel in the horizontal cylinder 1, and when the gravel reaches a certain height, the sand discharge port 14 is opened to discharge the gravel.

Further, a recoil pipe 6 is also installed in the horizontal cylinder 1, the locator 18 is located on the side of the water baffle 5 away from the medium outlet 11, and the recoil pipe 6 is connected with a joint of the recoil pipe 6. The other end of the joint of the flushing pipe 6 protrudes from the bottom of the horizontal cylinder 1 . The recoil pipe 6 can recoil the horizontal cylinder 1, so that the grit in the horizontal cylinder 1 is completely discharged.

Furthermore, a wire mesh demister 7 is connected to the medium outlet 11 of the horizontal cylinder 1 . The wire mesh demister 7 can filter the shale gas excessively to ensure the cleanliness of the shale gas discharged from the outlet. Both ends of the horizontal cylinder 1 are fixed with heads 8 , and a manhole 81 is provided on the head 8 near the medium outlet 11 to facilitate the maintenance and replacement of the wire mesh demister 7 .

The working principle of the shale gas horizontal cyclone desander of the present invention:

The equipment adopts a horizontal structure, the design pressure is medium pressure (8.5MPa), the length-diameter ratio of the horizontal cylinder 1 is a certain proportion, the left and right ends of the equipment adopt the structure of head 8, the equipment is equipped with double saddles, and the equipment structure is simple. Manufacturing costs are low.

A separation tower 2 is arranged above the front end of the horizontal cylinder 1, a medium inlet 21 is arranged in the middle of the separation tower 2, and a number of cyclone mechanisms 3 are arranged inside. and lighter gases.

After the lighter gas and some impurities are initially separated by the cyclone mechanism 3, they enter the interior of the horizontal cylinder 1. A certain number of baffles are evenly distributed in the horizontal cylinder 1 along the direction of the cylinder, and the fluid is separated by the principle of inertia. At the same time, due to the relatively large length and diameter of the horizontal cylinder 1, the separation efficiency of the fluid can be improved by means of gravity sedimentation.

On the upper part of the rear end of the horizontal cylinder 1, a medium outlet 11 is provided, and the separated fluid enters the wire mesh demister 7 arranged at the medium outlet 11 for the final step of separation, and the separated clean gas flows out from the medium outlet 11, A manhole 81 is provided on the head 8 at the rear end of the equipment to facilitate maintenance and replacement of the wire mesh demister 7 .

A water baffle 5 is arranged at the rear end of the horizontal cylinder 1, and a water side liquid level gauge 16 and a water outlet 15 are arranged behind the water baffle 5. The solids and liquids are gradually deposited at the bottom of the horizontal cylinder 1. At the same time, due to the Under the action of gravity, liquid and solid gradually precipitate into layers. The lighter water turns over the water baffle 5 and enters the space behind the water baffle 5 . The water level gauge 16 is used to control the liquid level, and the water is discharged through the water outlet 15 .

A liquid collecting bag 4 is arranged at the lower part of the front end of the horizontal cylinder 1, a sand discharge port 14 is arranged at the lower part of the liquid collecting bag 4, and a level measuring instrument 18 and a sand side liquid level gauge 17 are arranged behind the liquid collecting bag 4. The heavier liquids and solids separated by gravity and inertia settle at the bottom of the horizontal cylinder 1 . When the height of solids such as gravel reaches the position of the level measuring instrument 18, the sand discharge port 14 can carry out the sand discharge operation, and at the same time, the sand side liquid level gauge 17 is used to control the liquid level to achieve the purpose of sand discharge.

The bottom of the inner side of the horizontal cylinder 1 is provided with a recoil pipe 6, and the interface of the recoil pipe 6 is connected from the outside of the equipment. When the equipment is used for a period of time, the recoil pipe 6 can be used for thorough cleaning.

Wherein, partitions 22 are arranged at the top and bottom of the medium inlet 21 of the separation tower 2 to ensure that the medium can flow into the cyclone, and the medium flows into the inner cylinder 32 of the cyclone from the inlet in the middle of the cyclone.

The inner cylinder 32 of the cyclone is provided with a guide fin 34 , and the guide fin 34 utilizes the action of swirling flow to improve the separation efficiency and at the same time increase the pressure drop to prevent the lighter medium from flowing out from the bottom of the inner cylinder 32 .

Due to the action of swirling flow and gravity, the heavier solids and liquids are separated from the medium and flow out from the outlet at the bottom of the inner cylinder 32 .

The lighter gas flows out from the top of the inner cylinder 32. In order to reduce the pressure drop, the top of the outer cylinder 31 is arc-shaped. The outflow realizes the separation of gas, solid and liquid.

The present invention is not limited to the above-mentioned optional embodiments, and anyone can draw other various forms of products under the inspiration of the present invention, but no matter what changes are made in its shape or structure, all fall within the definition of the claims of the present invention. The technical solutions within the scope all fall within the protection scope of the present invention.

Claims (7)

1. A horizontal cyclone desander for shale gas, characterized in that it comprises a horizontal cylinder (1), one side of the horizontal cylinder (1) is connected with a separation tower (2), and the horizontal cylinder (1) is connected with a separation tower (2). The other side of (1) is provided with a medium outlet (11), a number of cyclone mechanisms (3) are connected in the separation tower (2), a medium inlet (21) is arranged on the separation tower (2), and the medium inlet (21) is connected to the A plurality of cyclone mechanisms (3) are communicated; a liquid collecting bag (4) is connected to the bottom of the horizontal cylinder (1); a high-level baffle (12) and a low-level baffle are arranged in the horizontal cylinder (1) at intervals plate (13), the high baffle (12) is sealed with the top of the horizontal cylinder (1), and a gap is provided between the low baffle (13) and the top of the horizontal cylinder (1); the liquid collecting bag The lower part of (4) is provided with a sand discharge port (14), the liquid collecting bag (4) is located below the separation tower (2), and a water baffle (5) is also arranged in the horizontal cylinder (1), and the water baffle ( 5) Located between the separation tower (2) and the medium outlet (11), the bottom of the horizontal cylinder (1) is provided with a drain (15), and the drain (15) is located on the baffle (5) away from the sand outlet ( 14) side; the separation tower (2) is provided with two partitions (22), the cyclone mechanism (3) is fixed between the two partitions (22), and the medium inlet (21) is located in the separation tower (22). 2) The area between the two upper partition plates (22); the cyclone mechanism (3) includes an outer cylinder (31), the outer cylinder (31) is fixed between the two partition plates (22), and the outer cylinder (31) ) is provided with an inner cylinder (32), an inlet pipe (33) is fixed on the inner cylinder (32), the other end of the inlet pipe (33) protrudes from the outer cylinder (31), and the inner cylinder (32) is provided with a The guide vane (34), the lower end of the inner cylinder (32) and the lower end of the outer cylinder (31) are in communication with the horizontal cylinder (1), the upper end of the inner cylinder (32) is open, and the upper end of the outer cylinder (31) is sealed ; The lower end of the outer cylinder (31) extends to the upper part of the horizontal cylinder (1), and the lower end of the inner cylinder (32) extends to the lower part of the horizontal cylinder (1). 2 . The horizontal cyclone desander for shale gas according to claim 1 , wherein the shape of the upper end of the outer cylinder ( 31 ) is arc-shaped. 3 . 3. A shale gas horizontal cyclone desander according to claim 1, characterized in that a water-side level gauge (16) and a sand-side liquid level gauge (16) are installed in the horizontal cylinder (1) The level gauge (17), the water side level gauge (16) is located on the side of the water baffle (5) away from the sand discharge port (14), and the sand side liquid level gauge (17) is located on the water baffle (5) away from the drain port (15) side. 4. A shale gas horizontal cyclone desander according to claim 1, characterized in that a locator (18) for monitoring the position of sand and gravel is also installed in the horizontal cylinder (1) , the locator (18) is located on the side of the water baffle (5) away from the medium outlet (11). 5. A shale gas horizontal cyclone desander according to claim 1, characterized in that, a recoil pipe (6) is also installed in the horizontal cylinder (1), and a locator ( 18) Located on the side of the water baffle (5) away from the medium outlet (11), the recoil pipe (6) is connected with a recoil pipe joint (61), and the other end of the recoil pipe joint (61) is connected from the horizontal cylinder. The bottom of the body (1) protrudes. 6. The horizontal cyclone desander for shale gas according to any one of claims 1 to 5, wherein a wire is connected to the medium outlet (11) of the horizontal cylinder (1) Net demister (7). 7. A shale gas horizontal cyclone desander according to claim 6, characterized in that, both ends of the horizontal cylinder (1) are fixed with heads (8), close to the medium outlet ( A manhole (81) is arranged on the head (8) of 11).

Images