Drilling cuttings filtering device

Abstract

The utility model is suitable for the technical field of filtering devices, and provides a drilling cuttings filtering device which comprises a first filtering box and a second filtering box, and the first filtering box is located on one side of the second filtering box; the filter sieve is welded on the inner side walls of the first filter box and the second filter box; the first hydraulic cylinder is fixed at the top of the first filter box and the top of the second filter box through bolts; the pressing plate is fixed at the output end of the first hydraulic cylinder; the first electromagnetic valves are fixed on the outer side walls of the first filter box and the second filter box through bolts; the first shunt pipe is arranged between the two first electromagnetic valves; solid-phase particles with high water content on the filter sieve can be extruded through the pressing plate, the water content of the solid-phase particles is reduced, and therefore the problem that drilling fluid is lost after the solid-phase particles are discharged is avoided, the push plate and the water spraying plate horizontally move along the filter sieve, the solid-phase particles can be discharged, the filter sieve can be washed, and the drilling fluid is prevented from being damaged. The filter sieve is prevented from being blocked.

Description

Technical Field

[0001] The utility model belongs to the technical field of filtering devices, in particular to a drilling cuttings filtering device. Background Art

[0002] During the drilling process, rock cuttings are generated when the drill bit breaks the rock formation. Since the main function of the drilling fluid is to carry the rock cuttings from the bottom of the well to the surface, the generated drilling waste fluid contains a large amount of solid particles. The solid particles in the drilling fluid, such as rock cuttings and barite, deteriorate the flow properties of the drilling fluid, which not only destroys the stability of the drilling fluid performance, but also increases the friction of the circulation system, causing premature wear of the equipment. Therefore, the drilling waste fluid must be separated before it re-enters the circulation system.

[0003] In oil drilling operations, a vibrating screen is used to separate solid particles in the drilling fluid. This method will result in a high water content in the separated solid particles, which will in turn cause the problem of drilling fluid loss.

[0004] Therefore, a drilling cuttings filtering device is proposed. Utility Model Content

[0005] The utility model provides a drilling cuttings filtering device, aiming to solve the problem that solid phase particles generated by the existing drilling cuttings contain more water during filtering, which easily causes the loss of drilling fluid.

[0006] The utility model is implemented as follows: a drilling cuttings filtering device comprises: a first filter box and a second filter box, the first filter box is located on one side of the second filter box; filter screens welded to the inner wall of the first filter box and the second filter box; a first hydraulic cylinder fixed to the top of the first filter box and the second filter box by bolts; a pressure plate fixed to the output end of the first hydraulic cylinder; a first solenoid valve fixed to the outer wall of the first filter box and the second filter box by bolts; a first shunt pipe arranged between the two first solenoid valves; a liquid inlet pipe welded to the central position of the top of the first shunt pipe; a second shunt pipe fixed between the bottom of the first filter box and the second filter box by bolts; and a liquid outlet pipe welded to the central position of the bottom of the second shunt pipe.

[0007] The drilling cuttings filtering device also includes a sealing plate fixed to the outer side walls of the first filter box and the second filter box by bolts; a second hydraulic cylinder and a third hydraulic cylinder fixed to the outer side walls of the sealing plate by bolts, the second hydraulic cylinder being located above the third hydraulic cylinder; a push plate fixed to the output end of the second hydraulic cylinder; a second solenoid valve fixed to the outer side walls of the other side of the first filter box and the second filter box by bolts; a water spray plate fixed to the output end of the third hydraulic cylinder; a water spray hole opened on the top of the water spray plate; a water pump fixed to the outer side walls of the first filter box and the second filter box by bolts; a connecting pipe fixed to the output end of the water pump; and a telescopic pipe arranged between the connecting pipe and the water spray plate.

[0008] Preferably, the cross-sections of the first shunt tube and the second shunt tube are both U-shaped structures.

[0009] Preferably, a concave cavity for accommodating the push plate and the telescopic tube is provided on an outer wall of one side of the sealing plate.

[0010] Preferably, the top of the filter screen is provided with screen holes.

[0011] Preferably, the water spray plate is a hollow structure, and the water spray plate is connected to the telescopic pipe.

[0012] Preferably, the input end of the water pump is connected to an external water pipe.

[0013] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0014] The solid particles with high water content on the filter screen can be squeezed by the pressure plate to reduce the water content of the solid particles, thereby avoiding the problem of drilling fluid loss after the solid particles are discharged. The push plate and the water spray plate can be moved horizontally along the filter screen, which can not only discharge the solid particles but also flush the filter screen to avoid clogging of the filter screen. Through the alternating filtration of the first filter box and the second filter box, the filter device can be kept in a filtering state, thereby ensuring the filtration efficiency of the drilling fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the second filter box of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the first filter box of the utility model;

[0018] Figure 4 It is a schematic diagram of the push plate structure of the utility model;

[0019] Figure 5It is a schematic diagram of the structure of the water spray plate of the utility model.

[0020] In the figure: 1. first filter box; 2. second filter box; 3. filter screen; 4. first hydraulic cylinder; 5. pressure plate; 6. first solenoid valve; 7. first shunt pipe; 8. liquid inlet pipe; 9. second shunt pipe; 10. liquid outlet pipe; 11. sealing plate; 12. second hydraulic cylinder; 13. push plate; 14. second solenoid valve; 15. third hydraulic cylinder; 16. water spray plate; 17. water spray hole; 18. water pump; 19. connecting pipe; 20. telescopic pipe. DETAILED DESCRIPTION

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0022] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] The utility model provides a drilling cuttings filtering device, such as Figure 1-3 As shown, it includes a first filter box 1 and a second filter box 2, a filter screen 3 is welded on the inner wall of one side of the first filter box 1 and the second filter box 2, a sieve hole is opened on the top of the filter screen 3, the top of the first filter box 1 and the second filter box 2 are fixedly connected with a first hydraulic cylinder 4 by bolts, the first hydraulic cylinder 4 is fixedly connected with a pressure plate 5 through its output end, the first filter box 1 and the second filter box 2 are fixedly connected with a first solenoid valve 6 by bolts on the outer wall of one side, a first shunt pipe 7 is arranged between the two first solenoid valves 6, a liquid inlet pipe 8 is welded at the top center position of the first shunt pipe 7, a second shunt pipe 9 is fixedly connected between the bottom of the first filter box 1 and the second filter box 2 by bolts, the cross-sections of the first shunt pipe 7 and the second shunt pipe 9 are both U-shaped structures, and a liquid outlet pipe 10 is welded at the bottom center position of the second shunt pipe 9.

[0024] It should be noted that, since the existing drilling cuttings filtering device may have the problem of high water content of separated solid particles, which in turn causes the problem of drilling fluid loss, the present embodiment can squeeze the solid particles with high water content on the filter screen 3 through the pressure plate 5 to reduce the water content of the solid particles, thereby avoiding the problem of drilling fluid loss after the solid particles are discharged. By moving the push plate 13 and the water spray plate 16 horizontally along the filter screen 3, not only can the solid particles be discharged, but also the filter screen 3 can be flushed to avoid clogging of the filter screen 3. By alternating filtration of the first filter box 1 and the second filter box 2, the filter device can be kept in a filtering state at all times, thereby ensuring the filtering efficiency of the drilling fluid.

[0025] Specifically, in this embodiment, this scheme mainly includes a first filter box 1 and a second filter box 2. When in use, the extracted drilling fluid is injected into the liquid inlet pipe 8, and one of the two first solenoid valves 6 is opened and the other is closed. At this time, the drilling fluid enters the first filter box 1 or the second filter box 2, and the filter screen 3 filters the solid particles in the drilling fluid. The solid particles are filtered above the filter screen 3. The first hydraulic cylinder 4 drives the pressure plate 5 to move downward through its output end, and the pressure plate 5 squeezes the solid particles on the filter screen 3, and the water in the solid particles is squeezed out. The drilling fluid passes through the filter screen 3 and flows into the second diversion pipe 9, and finally flows out through the liquid outlet pipe 10, and the drilling fluid reflux is diverted into the drilling well.

[0026] The utility model provides a drilling cuttings filtering device, such as Figure 1-5 As shown, it includes a first filter box 1 and a second filter box 2, and a sealing plate 11 is fixedly connected to the outer wall of one side of the first filter box 1 and the second filter box 2 adjacent to the first solenoid valve 6 by bolts, and a second hydraulic cylinder 12 and a third hydraulic cylinder 15 are fixedly connected to the outer wall of one side of the sealing plate 11 by bolts, the second hydraulic cylinder 12 is located above the third hydraulic cylinder 15, and the second hydraulic cylinder 12 is fixedly connected to a push plate 13 through its output end, and a second solenoid valve 14 is fixedly connected to the outer wall of one side of the first filter box 1 and the second filter box 2 at a position on the side close to the push plate 13 by bolts, and the third hydraulic cylinder 15 is fixedly connected to a water spray plate 16 through its output end, and a water spray hole 17 is opened on the top of the water spray plate 16, and a water pump 18 is fixedly connected to the outer wall of one side of the first filter box 1 and the second filter box 2 by bolts, and a connecting pipe 19 is fixedly connected to the output end of the water pump 18, and a telescopic pipe 20 is arranged between the connecting pipe 19 and the water spray plate 16.

[0027] Specifically, in this embodiment, this scheme mainly includes a push plate 13 and a water spray plate 16. After the extrusion of the solid phase particles is completed, the water content in the solid phase particles becomes low. At this time, the second hydraulic cylinder 12 and the third hydraulic cylinder 15 work synchronously. The second hydraulic cylinder 12 drives the push plate 13 to move through its output end, and the second solenoid valve 14 is opened. The push plate 13 pushes the solid phase particles on the filter screen 3 and pushes them out through the second solenoid valve 14 to achieve the collection of the solid phase particles. The water spray plate 16 moves horizontally below the filter screen 3, and the water in the external water pipe is pumped into the water spray plate 16 through the connecting pipe 19 and the telescopic pipe 20 by the water pump 18. Finally, the water is sprayed upward from the spray hole 17 opened on the top of the water spray plate 16. The high-pressure water flow can blow away the drilling and cutting impurities that clog the filter screen 3, avoid clogging the filter screen 3, and ensure the filtration efficiency of the filtration device.

[0028] In a further preferred embodiment of the present invention, Figure 1-3 As shown, a concave cavity for accommodating the push plate 13 and the telescopic tube 20 is opened on the outer wall of one side of the sealing plate 11.

[0029] In this embodiment, the push plate 13 and the telescopic tube 20 can be stored, so as to facilitate the subsequent pushing of materials and water spraying.

[0030] In a further preferred embodiment of the present invention, Figure 3 and Figure 5 As shown, the water spray plate 16 is a hollow structure, and the water spray plate 16 is connected to the telescopic pipe 20, and the input end of the water pump 18 is connected to the external water pipe.

[0031] In this embodiment, water in the external water pipe is pumped into the water spray plate 16 through the connecting pipe 19 and the telescopic pipe 20 by the water pump 18, and finally sprayed upward from the water spray hole 17 opened at the top of the water spray plate 16. The high-pressure water flow can blow away the drilling and cutting impurities that clog the filter screen 3, thereby avoiding clogging of the filter screen 3 and ensuring the filtering efficiency of the filtering device.

[0032] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0033] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0034] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0035] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A drilling cuttings filtering device, characterized in that: include: A first filter box (1) and a second filter box (2), wherein the first filter box (1) is located on one side of the second filter box (2); Filter screens (3) welded to the inner side walls of the first filter box (1) and the second filter box (2); a first hydraulic cylinder (4) fixed to the top of the first filter box (1) and the second filter box (2) by bolts; A pressure plate (5) fixed to the output end of the first hydraulic cylinder (4); a first solenoid valve (6) fixed to the outer side walls of the first filter box (1) and the second filter box (2) by bolts; A first shunt pipe (7) disposed between the two first solenoid valves (6); a liquid inlet pipe (8) welded to the central position of the top of the first shunt pipe (7); A second flow divider (9) fixed between the bottom of the first filter box (1) and the bottom of the second filter box (2) by means of bolts; A liquid outlet pipe (10) is welded to the central position of the bottom of the second diversion pipe (9).

2. The drilling cuttings filtering device according to claim 1, characterized in that: It also includes a sealing plate (11) fixed to the outer side walls of the first filter box (1) and the second filter box (2) by bolts; a second hydraulic cylinder (12) and a third hydraulic cylinder (15) fixed to the outer side wall of the sealing plate (11) by means of bolts, wherein the second hydraulic cylinder (12) is located above the third hydraulic cylinder (15); A push plate (13) fixed to the output end of the second hydraulic cylinder (12); a second solenoid valve (14) fixed to the outer wall of the first filter box (1) and the other side of the second filter box (2) by bolts; a water spray plate (16) fixed to the output end of the third hydraulic cylinder (15); A water spray hole (17) is provided on the top of the water spray plate (16); A water pump (18) fixed to the outer side walls of the first filter box (1) and the second filter box (2) by bolts; A connecting pipe (19) fixed to the output end of the water pump (18); A telescopic pipe (20) is arranged between the connecting pipe (19) and the water spray plate (16).

3. The drilling cuttings filtering device according to claim 1, characterized in that: The cross-sections of the first shunt pipe (7) and the second shunt pipe (9) are both U-shaped structures.

4. The drilling cuttings filtering device according to claim 2, characterized in that: A concave cavity for accommodating the push plate (13) and the telescopic tube (20) is provided on one side outer wall of the sealing plate (11).

5. The drilling cuttings filtering device according to claim 1, characterized in that: The top of the filter screen (3) is provided with screen holes.

6. The drilling cuttings filtering device according to claim 2, characterized in that: The water spray plate (16) is a hollow structure, and the water spray plate (16) and the telescopic tube (20) are connected.

7. The drilling cuttings filtering device according to claim 2, characterized in that: The input end of the water pump (18) is connected to an external water pipe.

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