Combined environment-friendly mud pit for drilling

Abstract

The utility model relates to the technical field of building equipment, in particular to a combined environment-friendly mud pit for drilling, which comprises a protective cylinder for guiding mud, a settling barrel for filtering the mud and a mud barrel for collecting the mud which are connected in sequence, the pile casing is fixedly arranged in a drill hole, a through hole allowing a drilling tool to pass through is formed in the middle of the pile casing, and a guide pipe used for guiding slurry out is arranged on the upper portion of the pile casing. A filtering plate is arranged in the settling barrel to divide the settling barrel into a filtering area and a filtered area, the guide pipe is communicated with the filtering area, and slurry enters the filtered area through the filtering plate; the filtered area is communicated with the slurry barrel, and the slurry barrel is connected with a slurry circulating device of a drilling machine, so that the filtered slurry is circulated into a drill hole.

Description

Technical Field

[0001] The utility model relates to the technical field of construction equipment, in particular to a combined environmentally friendly mud pool for drilling. Background Art

[0002] The mud pool is an important device used to precipitate drill cuttings and hold mud during the drilling process of a circulating drill rig. The usual practice is to dig a rectangular pit next to the drilling rig as a mud pool, and then dig a guide ditch to connect the mud pool with the borehole, guide the mud to flow into the mud pool, and then circulate it into the borehole through the mud circulation device of the drilling rig to form a mud circulation loop. After the construction is completed, the mud pool is buried on site.

[0003] In recent years, with the increasing number of municipal road reconstruction and expansion and subway construction projects, drilling construction is often carried out in public places such as municipal roads, green spaces, and squares. Direct excavation of mud pools not only has the risk of damaging underground pipelines, but also has high backfill and repair costs. If the backfill is not dense, it is easy to cause ground subsidence in the later stage, affecting the aesthetics of municipal facilities and posing a safety hazard to pedestrians and vehicles.

[0004] The current solution is to use a prefabricated steel plate mud pool. However, due to the requirements of the drilling rig's mud circulation device, the steel plate mud pool is usually low in height and large in bottom area, so it has to take up more space during construction; another disadvantage of the steel plate mud pool is its open design, which exposes the mud directly to the air and easily spills during secondary transportation, polluting the environment and causing waste of resources. The existing mud pool is also very inconvenient for mud recycling, and requires corresponding cleaning vehicles for recycling and disposal. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a combined environmentally friendly mud pool for drilling, which solves the technical problems of the existing mud pools occupying a large space and being difficult to transport and recover the mud.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0009] A combined environmentally friendly mud pool for drilling, comprising a casing for guiding mud, a sedimentation barrel for filtering mud, and a mud barrel for collecting mud, which are connected in sequence;

[0010] The casing is fixedly arranged in the drill hole, a through hole for passing the drilling tool is provided in the middle of the casing, and a conduit for guiding out the mud is provided in the upper part of the casing;

[0011] A filter plate is provided in the sedimentation barrel to divide the sedimentation barrel into a filtering area and a filtered area, the conduit is connected to the filtering area, and the mud enters the filtered area through the filter plate;

[0012] The filtered area is connected to the mud barrel, and the mud barrel is connected to the mud circulation device of the drilling rig so that the filtered mud can be circulated into the borehole.

[0013] The sedimentation barrel is provided with a first slurry inlet joint connected to the filtration area, and the first slurry inlet joint is connected to the conduit through a first hose.

[0014] The sedimentation barrel is provided with a first slurry outlet joint connected to the filtered area, and the bottom of the filtered area is provided with a mud pump, and the mud pump is connected to the first slurry outlet joint.

[0015] The first slurry outlet joint is connected to the second slurry inlet joint on the upper part of the slurry barrel through a second hose.

[0016] A plurality of second mud outlet joints are provided at the lower part of the mud barrel, and at least one of the second mud outlet joints is connected to a mud circulation device of a drilling rig.

[0017] A limiting groove for fixing the filter plate is provided on the inner side wall of the sedimentation barrel, and the filter plate is plugged into the limiting groove.

[0018] The filter plate comprises a filter plate outer frame, a filter plate inner frame and a filter net, the filter net is fixedly connected to the filter plate outer frame through the filter plate inner frame, and the filter plate inner frame divides the filter net into a plurality of filter net units.

[0019] A mud bucket cover for closing the mud bucket is provided on the top of the mud bucket.

[0020] (III) Beneficial effects

[0021] The beneficial effect of the utility model is that the utility model provides a combined environmentally friendly mud pool for drilling, including a detachably connected casing, a sedimentation barrel and a mud barrel, the casing, the sedimentation barrel and the mud barrel are connected by a mud hose, so that their positions can be placed more flexibly.

[0022] The casing is a hollow circular tube structure. The hollow part can be passed through by the drilling tools of the drilling rig, and there is a certain gap between the drilling tools of the drilling rig and the inner wall of the casing for the mud to flow. The casing can play the role of raising the mud level in the borehole, so that the mud can flow freely into the sedimentation barrel under the guidance of the conduit, and can also support the borehole wall to prevent the hole from collapsing.

[0023] The sedimentation barrel is divided into two areas by setting a filter plate, and the mud carrying coarse particles such as drilling cuttings is filtered. The filtered mud can be pumped into the mud barrel for storage through a mud pump.

[0024] A limiting groove is provided in the sedimentation barrel, and the filter plate can be removably fixed in the sedimentation barrel through the limiting groove. Filters of different mesh sizes can be replaced according to the specific conditions of the construction site, thereby achieving an effective filtering effect.

[0025] A mud barrel cover is installed on the mud barrel to keep the mud in a closed environment for easy secondary transportation.

[0026] A plurality of mud outlet joints are arranged at the bottom of the mud barrel, and the plurality of mud barrels can be connected in series through a hose to form a mud barrel group to expand the mud storage capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the combined environmentally friendly mud pool of the utility model;

[0028] Figure 2 It is a structural schematic diagram of the sedimentation barrel of the utility model;

[0029] Figure 3 It is a structural schematic diagram of the filter plate of the utility model.

[0030] [Description of Reference Numerals]

[0031] 1: casing; 2: conduit; 3: first hose; 4: first slurry inlet joint; 5: sedimentation barrel; 51: limiting groove; 6: filter plate; 61: filter plate outer frame; 62: filter plate inner frame; 63: filter screen; 7: mud pump; 8: first slurry outlet joint; 9: second hose; 10: second slurry inlet joint; 11: mud barrel cover; 12: mud barrel; 13: second slurry outlet joint. DETAILED DESCRIPTION

[0032] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific implementation methods. Figure 1 The orientation is used as a reference.

[0033] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0034] See attached Figure 1-3As shown, the utility model provides a combined environmentally friendly mud pool for drilling, including a casing 1, a settling barrel 5 and a mud barrel 12, the casing 1, the settling barrel 5 and the mud barrel 12 are connected in sequence, and the mud barrel 12 is connected to the mud circulation device of the drilling rig. A filter plate 6 for filtering mud is provided in the settling barrel 5. During drilling operations, the circulating mud generated by the drilling tool enters the settling barrel 5 from the casing 1, is filtered in the settling barrel 5, enters the mud barrel 12, and then enters the borehole again through the mud circulation device of the drilling rig, thereby realizing the recycling of mud.

[0035] The casing 1 is a hollow tubular structure. A through hole for passing the drilling tool is provided in the middle of the casing 1. A conduit 2 for guiding the mud is provided on the upper part of the casing 1. The distance between the conduit 2 and the top of the casing 1 is set according to actual needs. The size of the casing 1 matches the borehole. The casing 1 is used to raise the liquid level of the mud in the borehole so that it can flow freely into the sedimentation barrel 5 under the guidance of the conduit 2. At the same time, it can also support the hole wall and protect the borehole.

[0036] The sedimentation barrel 5 is used to filter the mud. A filter plate 6 is provided in the sedimentation barrel 5 along the vertical direction to divide the interior of the sedimentation barrel 5 into a filtering area and a filtered area. The sedimentation barrel 5 is provided with a first slurry inlet joint 4 and a first slurry outlet joint 8. The conduit 2 is connected to the first slurry inlet joint 4 through a first hose 3. The first slurry inlet joint 4 is connected to the filtering area to transport the unfiltered mud to the filtering area. The mud after filtering out large solid particles such as drilling cuttings through the filter plate 6 enters the filtered area. The first slurry outlet joint 8 is connected to the filtered area. A mud pump 7 is provided at the bottom of the filtered area. The mud pump 7 pumps the filtered mud to the first slurry outlet joint 8.

[0037] The inner wall of the sedimentation barrel 5 is provided with a limiting groove 51 for fixing the filter plate 6, and the filter plate 6 is plugged and fixed with the limiting groove 51. The filter plate 6 includes a filter plate outer frame 61, a filter plate inner frame 62 and a filter screen 63. The filter plate inner frame 62 is used to fix the filter screen 63 on the filter plate outer frame 61. The filter plate inner frame 62 divides the filter screen 63 into a plurality of filter screen units to improve the structural strength of the filter plate 6.

[0038] The mud barrel 12 is used to collect the filtered mud and send the mud to the mud circulation device of the drilling rig. The top of the mud barrel 12 is provided with a mud barrel cover 11, which is used to close the mud barrel 12. The upper and lower parts of the mud barrel 12 are respectively provided with a second mud inlet joint 10 and a plurality of second mud outlet joints 13. The second mud inlet joint 10 is connected to the first mud outlet joint 8 through a second hose 9. The mud pumped out by the mud pump 7 to the first mud outlet joint 8 enters the mud barrel 12 through the second hose 9 and the second mud inlet joint 10. The mud barrel 12 collects the filtered mud and sends it to the mud circulation device of the drilling rig through the second mud outlet joint 13 to realize the recycling of the mud.

[0039] The second mud outlet joint 13 can also be used to connect other mud barrels 12 in series. When the amount of mud to be processed is large, multiple mud barrels 12 can be connected in series through the second mud outlet joint 13. Take two mud barrels 12 connected in series as an example: connect the valve of the second mud outlet joint 13 of the first mud barrel with the valve of the second mud outlet joint 13 of the second mud barrel through a hose, close the valve of the other second mud outlet joint 13 of the first mud barrel, open another second mud outlet joint 13 of the second mud barrel, and connect it to the mud circulation device of the drilling rig. The other unused second mud outlet joints 13 are all in a closed state.

[0040] The first slurry inlet joint 4, the first slurry outlet joint 8, the second slurry inlet joint 10 and the second slurry outlet joint 13 are all provided with independent valve switches, and each can be opened or closed independently.

[0041] The working principle of the combined environmentally friendly mud pool for drilling of the utility model is as follows:

[0042] Before the drilling work begins, the sedimentation barrel 5 and the mud barrel 12 are flexibly arranged within the construction range according to the site conditions, the casing 1 is hammered into the ground where a hole has been opened, and it is ensured that the height of the conduit 2 is greater than the height of the sedimentation barrel 5, the filter plate 6 is inserted into the limiting groove 51 of the sedimentation barrel 5, the first hose 3 and the second hose 9 are connected, the valves of the first slurry inlet joint 4, the first slurry outlet joint 8, the second slurry inlet joint 10 and a second slurry outlet joint 13 are opened, and the mud circulation device of the drilling rig is connected to the second slurry outlet joint 13 to form a mud circulation passage.

[0043] During drilling operations, the drilling tool of the drilling rig is passed through the hole of the casing 1 for drilling. The circulating mud in the borehole flows from the gap between the casing 1 and the drilling tool into the conduit 2, and flows into the settling tank 5 through the hose 3. When the circulating mud flows through the filter plate 6, the large solid particles such as drilling cuttings it carries are intercepted and precipitated, and the remaining mud is pumped back to the mud tank 12 through the mud pump 7. The mud in the mud tank 12 flows back into the borehole through the mud circulation device of the drilling rig and enters the next cycle. When there is a lot of drilling cuttings in the settling tank 5, it can be directly fished out and cleaned.

[0044] When the drilling construction is completed, first close the second slurry outlet joint 13, wait until the mud in the sedimentation barrel 5 is completely pumped into the mud barrel 12, close the valves of the first slurry inlet joint 4, the first slurry outlet joint 8 and the second slurry inlet joint 10, close the barrel cover 11, clean the drilling cuttings in the sedimentation barrel 5, remove the connected first hose 3 and second hose 9, and transport the mud barrel 12 containing the mud to the disposal site as a whole for mud recovery and cleaning.

[0045] The utility model provides a combined environmentally friendly mud pool for drilling, including a casing 1, a settling barrel 5 and a mud barrel 12. The casing 1 is a hollow tubular structure. The hollow part of the casing 1 body can be passed through by the drilling tool of the drilling rig, and a certain gap is left between the drilling tool of the drilling rig and the inner wall of the casing 1 for mud to flow. The casing 1 can increase the liquid level of the mud in the borehole so that it can flow freely into the settling barrel 5 under the guidance of the conduit 2, and can also support the hole wall to prevent the hole from collapsing.

[0046] Furthermore, the filter plate 6 divides the sedimentation barrel 5 into two areas, and the mud carrying coarse particles such as drilling cuttings is intercepted and precipitated when flowing through the filter plate 6. The filtered mud is pumped by the mud pump 7 to the mud barrel 12 for storage.

[0047] Furthermore, the filter plate 6 is composed of a filter plate outer frame 61, a filter plate inner frame 62 and a filter net 63. The filter plate inner frame 62 can strengthen the overall strength of the filter plate 6 and facilitate the fixation of the filter net 63. The filter plate 6 can be inserted into the limiting groove 51 of the sedimentation barrel 5 and fixed, and can be replaced with a filter net 63 of different mesh sizes according to the specific conditions of the construction site, thereby achieving an effective filtering effect.

[0048] Furthermore, after the construction of the mud barrel 12 is completed, the valves of the mud inlet joint and the mud outlet joint can be closed, and the mud barrel cover 11 can be covered to put the mud in a closed environment for easy secondary transportation.

[0049] Furthermore, a plurality of mud outlet joints are provided at the bottom of the mud barrel 12, and the plurality of mud barrels 12 can be connected in series via a hose to form a mud barrel group to expand the mud storage capacity.

[0050] Furthermore, the casing 1, the settling barrel 5 and the mud barrel 12 are connected by a mud hose, so that their positions can be placed more flexibly.

[0051] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0054] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0055] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A combined environmentally friendly mud pool for drilling, characterized in that: It comprises a casing (1) for guiding mud, a sedimentation bucket (5) for filtering mud, and a mud bucket (12) for collecting mud, which are connected in sequence; The casing (1) is fixedly arranged in the drill hole, a through hole for passing a drilling tool is provided in the middle of the casing (1), and a conduit (2) for draining mud is provided in the upper part of the casing (1); A filter plate (6) is provided in the sedimentation barrel (5) to divide the sedimentation barrel (5) into a filtering area and a filtered area, the conduit (2) is connected to the filtering area, and the mud enters the filtered area through the filter plate (6); The filtered area is connected to the mud barrel (12), and the mud barrel (12) is connected to the mud circulation device of the drilling rig so that the filtered mud can be circulated into the borehole; A plurality of second mud outlet joints (13) are provided at the lower part of the mud barrel (12), and at least one of the second mud outlet joints (13) is connected to a mud circulation device of a drilling rig.

2. The combined environmentally friendly mud pool for drilling according to claim 1, characterized in that: The sedimentation barrel (5) is provided with a first slurry inlet joint (4) connected to the filtration area, and the first slurry inlet joint (4) is connected to the conduit (2) via a first hose (3).

3. The combined environmentally friendly mud pool for drilling according to claim 2, characterized in that: The sedimentation barrel (5) is provided with a first slurry outlet joint (8) communicating with the filtered area, and a slurry pump (7) is provided at the bottom of the filtered area, and the slurry pump (7) is connected to the first slurry outlet joint (8).

4. The combined environmentally friendly mud pool for drilling according to claim 3, characterized in that: The first slurry outlet joint (8) is connected to the second slurry inlet joint (10) at the upper part of the slurry barrel (12) via a second hose (9).

5. The combined environmentally friendly mud pool for drilling according to claim 1, characterized in that: A limiting groove (51) for fixing the filter plate (6) is provided on the inner side wall of the sedimentation barrel (5), and the filter plate (6) is plugged into the limiting groove (51).

6. The combined environmentally friendly mud pool for drilling according to claim 5, characterized in that: The filter plate (6) comprises a filter plate outer frame (61), a filter plate inner frame (62) and a filter screen (63); the filter screen (63) is fixedly connected to the filter plate outer frame (61) via the filter plate inner frame (62); the filter plate inner frame (62) divides the filter screen (63) into a plurality of filter screen units.

7. The combined environmentally friendly mud pool for drilling according to claim 1, characterized in that: A mud barrel cover (11) for closing the mud barrel (12) is provided on the top of the mud barrel (12).

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