Oil exploitation sand filtering device

Abstract

The utility model belongs to the technical field of oil exploitation, and particularly relates to an oil exploitation sand filtering device which comprises a feeding assembly capable of enabling oil to be subjected to sand filtering to be continuously injected into the device, and the feeding assembly is provided with a separation assembly capable of avoiding sand filtering work pause caused by gravel removal. And a discharging assembly capable of guiding the petroleum treated by the filtering sand out of the device is arranged between the feeding assembly and the separating assembly. After the sand filtering efficiency of the device is reduced, the liquid level height of petroleum in the device is conveniently adjusted, and the lifting piece is operated, so that a large amount of gravel influencing the sand filtering efficiency is rapidly transferred to the bearing piece on the premise that the sand filtering work of the device is not suspended, and the sand filtering efficiency of the device is guaranteed; through cooperation of the bearing piece and the separating piece, petroleum overflowing to the bearing piece together with the gravel can be partially recycled and converges with petroleum treated by the filter sand, and therefore the workload of workers when the gravel is discharged out of the bearing piece is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil exploitation, and in particular relates to a sand filtering device for oil exploitation. Background Art

[0002] During the oil extraction process, underground gravel will be extracted along with the oil. Although there are sand prevention technologies underground, a small amount of gravel will still be brought into the transportation system, causing pipeline blockage or wear and tear on pipelines and other equipment. Therefore, the extracted oil needs to be treated with sand filtering.

[0003] A Chinese patent document with authorization announcement number CN221503270U discloses a sand filter device for oil extraction, which injects oil into a sand filter cartridge that can continuously rotate in a housing, so that oil and sand can be effectively separated under the action of centrifugal force, and the sand can be effectively intercepted in the sand filter cartridge.

[0004] However, in the prior art, when too much sand and gravel accumulate in the sand filter device, the filter holes will be blocked, so that the staff must suspend the sand filtering work and remove the sand and gravel to avoid seriously affecting the oil filtering efficiency. Therefore, a sand filter device for oil production is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a sand filtering device for oil production.

[0006] The technical solution adopted by the utility model is as follows:

[0007] An oil production sand filtering device comprises a feed component that can continuously inject oil to be filtered into the device, a separation component that can avoid the sand filtering work being suspended due to the removal of gravel, and a discharge component that can guide the oil processed by the filtered sand out of the device between the feed component and the separation component;

[0008] The separation component includes a separation piece that can separate the internal space of the feed component and intercept the sand and gravel that enters the device with the oil, a lifting piece that can remove the sand and gravel accumulated in the separation piece without affecting the injection of oil into the device, and a receiving piece that can recover the oil that leaves the separation piece together with the sand and gravel.

[0009] Preferably, the separation member comprises a top cover fixedly connected to the top of the feed assembly, a partition frame is arranged below the top cover, and a filter screen is fixedly connected to the outer side surface of the partition frame.

[0010] Preferably: the lifting member includes a vertical pole fixedly connected to the top cover, a frame fixedly connected between the upper ends of the vertical poles, an axle seat fixedly connected to the lower side of the frame, a rotating shaft movably connected below the axle seat, a spiral blade fixedly connected to the outer side of the rotating shaft, and a motor fixedly connected to the upper end of the rotating shaft.

[0011] Preferably, the receiving member includes a ring frame fixedly connected to the lower side of the top cover, and a discharge valve is fixedly connected below the ring frame.

[0012] Preferably, the shaft seat is rotatably connected to the rotating shaft.

[0013] Preferably, the ring frame is an annular structure with an open top, and one section of the ring frame is a right trapezoid.

[0014] The beneficial effects of the present utility model are as follows: It is convenient to adjust the liquid level height of the petroleum in the device after the sand filtration efficiency of the device decreases, and make the lifting member operate, so as to quickly transfer a large amount of gravel affecting the sand filtration efficiency to the receiving member without pausing the sand filtration work of the device, thereby ensuring the sand filtration efficiency of the device; it is convenient to cooperate with the receiving member and the separating member, so that the petroleum that overflows to the receiving member together with the gravel can be partially recovered and converge with the petroleum that has undergone sand filtration treatment, thereby reducing the workload of the staff when discharging the gravel from the receiving member. Description of the Drawings

[0015] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0016] Figure 1 is an isometric structural schematic diagram of a sand filtration device for oil extraction according to the present utility model;

[0017] Figure 2 is a front view structural schematic diagram of a sand filtration device for oil extraction according to the present utility model;

[0018] Figure 3 is a partial component structural schematic diagram of the separation component of a sand filtration device for oil extraction according to the present utility model;

[0019] Figure 4 is a partial component cross-sectional structural schematic diagram of a sand filtration device for oil extraction according to the present utility model.

[0020] The description of the reference numerals in the drawings is as follows:

[0021] 1. Feed component; 101. Feed cylinder; 102. Conical cylinder; 2. Separation component; 201. Top cover; 202. Partition frame; 203. Filter screen; 204. Vertical rod; 205. Frame; 206. Shaft seat; 207. Rotating shaft; 208. Spiral blade; 209. Motor; 210. Ring frame; 211. Discharge valve; 3. Discharge component; 301. Stop valve; 302. Three-way pipe; 303. Filter; 304. Connecting pipe; 305. Check valve. Specific Embodiments

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0024] The present utility model will be further described below through embodiments in conjunction with the drawings.

[0025] As Figures 1-4 shown, an oil production sand filtering device includes a feeding assembly 1 that can continuously inject the oil to be sand-filtered into the device. A separation assembly 2 that can avoid the suspension of the sand filtering operation due to the removal of gravel is provided on the feeding assembly 1. A discharging assembly 3 that can export the oil that has undergone sand filtering treatment from the device is provided between the feeding assembly 1 and the separation assembly 2.

[0026] In this embodiment: The feeding assembly 1 includes a material cylinder 101, and a conical cylinder 102 is fixedly connected below the material cylinder 101. The partition frame 202 is accommodated in the material cylinder 101, and the movable range of the partition frame 202 in the device is restricted by cooperating with the conical cylinder 102 and the top cover 201. At the same time, the oil that has undergone sand filtering can flow into the discharging assembly 3, and the oil that needs to be sand-filtered is continuously introduced into the device through the conical cylinder 102.

[0027] In this embodiment: The separation component 2 includes a separator for separating the internal space of the feeding component 1 and intercepting the gravel entering the device with the petroleum, a lifting component for removing the gravel accumulated in the separator without affecting the injection of petroleum into the device, and a receiving component for recovering the petroleum that leaves the separator together with the gravel. The separator includes a top cover 201 fixedly connected above the feeding component 1. A partition frame 202 is arranged below the top cover 201. A filter screen 203 is fixedly connected to the outer side of the partition frame 202. The lifting component includes a vertical rod 204 fixedly connected to the top cover 201. A frame 205 is fixedly connected between the upper ends of the vertical rods 204. A shaft seat 206 is fixedly connected to the lower side of the frame 205. A rotating shaft 207 is movably connected below the shaft seat 206. A spiral blade 208 is fixedly connected to the outer side of the rotating shaft 207. A motor 209 is fixedly connected to the upper end of the rotating shaft 207. The receiving component includes an annular frame 210 fixedly connected to the lower side of the top cover 201. A discharge valve 211 is fixedly connected below the annular frame 210;

[0028] The shaft seat 206 is rotationally connected to the rotating shaft 207. The annular frame 210 is an annular structure with an open upper part. One section of the annular frame 210 is a right trapezoid;

[0029] By closing a part of the area above the barrel 101 through the top cover 201, the partition frame 202, the vertical rod 204, the annular frame 210 and other components can be stably installed in the device. Through the partition frame 202 connected with the filter screen 203, in cooperation with the conical barrel 102 and the top cover 201, the internal space of the barrel 101 is separated. The frame 205 is installed at a certain height above the top cover 201 through the vertical rod 204. The movable range of the rotating shaft 207 is restricted by the shaft seat 206. The rotation of the output end of the motor 209 is transmitted to the spiral blade 208 through the rotating shaft 207, so that the spiral blade 208 can continuously rotate around the axis of the rotating shaft 207 to stir and lift the petroleum in the area. The petroleum and gravel flowing out from the central opening of the top cover 201 are received by the annular frame 210, and the outflow of the petroleum and gravel in the annular frame 210 is controlled by the discharge valve 211.

[0030] In this embodiment: The discharging component 3 includes a stop valve 301 fixedly connected to the discharging end of the barrel 101. A tee pipe 302 is fixedly connected to one side of the stop valve 301. A filter 303 is fixedly connected to one side of the annular frame 210. A connecting pipe 304 is fixedly connected to one side of the filter 303. A check valve 305 is arranged between the tee pipe 302 and the connecting pipe 304;

[0031] Control the flow rate of the petroleum in the barrel 101 into the tee 302 through the stop valve 301, export the petroleum after sand filtration of this device through the tee 302, and prevent the petroleum and gravel entering the ring frame 210 from entering the tee 302 along the connecting pipe 304 and the check valve 305 through the filter 303. The check valve 305 prevents the petroleum entering the tee 302 along the stop valve 301 from entering the connecting pipe 304, causing the petroleum in the connecting pipe 304 to flow back to the ring frame 210, and then resulting in the disorderly overflow of the gravel or petroleum in the ring frame 210.

[0032] Working principle: When this device is installed and used for sand filtration in oil extraction, continuously inject petroleum into this device from the opening at the lower part of the conical cylinder 102, and keep the stop valve 301 fully open. The petroleum can overflow to the partition frame 202 after entering the conical cylinder 102, and after passing through the filter screen 203, it enters between the barrel 101 and the top cover 201, and then leaves this device along the stop valve 301 and the tee 302. During this process, the gravel contained in the petroleum will be intercepted by the filter screen 203 in the partition frame 202, thus completing the sand filtration treatment of the petroleum.

[0033] When the gravel in the partition frame 202 gradually increases, the stop valve 301 can be appropriately adjusted without changing the petroleum injection rate, so that the flow rate of the petroleum into the tee 302 becomes slower. In this case, the liquid level of the petroleum in the barrel 101 will gradually rise. When the liquid level height approaches the height of the top cover 201, the stop valve 301 can be adjusted again to maintain this liquid level height and prevent the petroleum from directly overflowing. Then, the motor 209 can be operated to drive the spiral blade 208 to rotate. After rotation, the spiral blade 208 can continuously lift the petroleum and gravel in the partition frame 202, so that it gradually overflows from above the top cover 201 into the ring frame 210, thereby transferring a large amount of gravel accumulated in the partition frame 202 to the ring frame 210. Then, the stop valve 301 can be fully opened to restore the original sand filtration state of this device.

[0034] For the petroleum and gravel entering the ring frame 210, under the dual action of gravity and the filter 303, most of the petroleum will flow to the tee 302 along the filter 303, the connecting pipe 304, and the check valve 305, while the gravel and the remaining small amount of petroleum will accumulate on the lower side of the ring frame 210 where the discharge valve 211 is provided. At this time, the staff can open the discharge valve 211 to make the remaining gravel and petroleum in the ring frame 210 flow out, and after collection, they can be subjected to subsequent treatment.

[0035] The preferred embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the gist of the present utility model.

Claims

1. A sand filter device for oil production, characterized in that: The invention comprises a feed component (1) capable of continuously injecting the oil to be filtered into the device, a separation component (2) capable of avoiding the suspension of the sand filtering work due to the removal of sand gravel being arranged on the feed component (1), and a discharge component (3) capable of guiding the oil processed by the sand filtering out of the device is arranged between the feed component (1) and the separation component (2); The separation component (2) comprises a separation element capable of separating the internal space of the feed component (1) and intercepting sand and gravel entering the device along with the oil, a lifting element capable of removing the sand and gravel accumulated in the separation element without affecting the injection of the oil into the device, and a receiving element capable of recovering the oil leaving the separation element together with the sand and gravel.

2. The oil production sand filtering device according to claim 1, characterized in that: The separation element comprises a top cover (201) fixedly connected above the feed assembly (1); a partition frame (202) is arranged below the top cover (201); and a filter screen (203) is fixedly connected to the outer side surface of the partition frame (202).

3. The oil production sand filter device according to claim 2, characterized in that: The lifting member comprises a vertical rod (204) fixedly connected to the top cover (201); a frame (205) is fixedly connected between the upper ends of the vertical rod (204); a shaft seat (206) is fixedly connected to the lower side of the frame (205); a rotating shaft (207) is movably connected below the shaft seat (206); a spiral blade (208) is fixedly connected to the outer side of the rotating shaft (207); and a motor (209) is fixedly connected to the upper end of the rotating shaft (207).

4. The oil production sand filter device according to claim 3, characterized in that: The receiving member comprises a ring frame (210) fixedly connected to the lower side of the top cover (201), and a discharge valve (211) is fixedly connected below the ring frame (210).

5. The oil production sand filtering device according to claim 3, characterized in that: The shaft seat (206) is rotatably connected to the rotating shaft (207).

6. The oil production sand filter device according to claim 4, characterized in that: The ring frame (210) is an annular structure with an opening at the top, and one cross section of the ring frame (210) is a right-angled trapezoid.

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