Special slurry mixing funnel for drilling machine and use method of special slurry mixing funnel

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Through the design of the drilling rig special grouting funnel, the problem of potassium salt strata leakage during drilling construction, the rapid and fully mixed mix of the slurry material and the mud, and improved the construction efficiency and safety.

CN119373436APending Publication Date: 2025-01-28CHINA COAL SPECIAL DRILLING ENG +1

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Patent Information

Application Number: CN202411842123.X
Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner
Filing Date: 2024-12-13
Publication Date: 2025-01-28

AI Technical Summary

Technical Problem

During the drilling process, especially in the potassium salt formation, slurry leakage is prone to occur. The traditional stirring method is long and uneven, resulting in the inability to mix the slurry material and the slurry thoroughly.

Method used

Design a drilling machine special grouting funnel, including a fixed base and a funnel body. There is an inlet port on the top of the funnel of the funnel. There is a slurry entrance and exit on both sides of the bottom. The mixed material flows out of the exit of the slurry to achieve rapid and fully mixing.

Benefits of technology

Through this device, the mixing material with the mud is quickly and fully mixed in a short period of time, without manpower stirring, and the slurry material is not easy to accumulate at the bottom of the mud pool, which improves the effectiveness of drilling.

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Abstract

The invention provides a special slurry mixing funnel for a drilling machine and a using method thereof.The special slurry mixing funnel comprises a fixed base and a funnel body arranged on the fixed base, a feeding port is formed in the top of the funnel body, and a slurry mixing material enters the funnel body from the feeding port; a slurry inlet and a slurry outlet which are communicated with the interior are formed in the two sides of the bottom of the funnel body respectively, and slurry enters the funnel body through the slurry inlet to be mixed with a slurry preparing material in the funnel body and then flows out of the slurry outlet together with the slurry preparing material. According to the invention, when the slurry preparation material is mixed with the slurry, the slurry in the slurry pool is pumped into the funnel body through the slurry pump, and the slurry is mixed with the slurry preparation material in the funnel body and then flows back to the slurry pool from the slurry outlet together with the slurry preparation material; the mud in the mud pit and the mud preparing material can be rapidly and fully mixed in a short time after the circulation for many times, manual stirring is not needed, and the mud preparing material is not prone to being accumulated at the bottom of the mud pit.

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Description

Technical Field

[0001] The invention relates to the technical field of drilling construction, and in particular to a special slurry mixing funnel for a drilling rig and a use method thereof. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] During the drilling construction process (mud wall drilling), if potassium salt formation is encountered, serious leakage problems will occur. Severe leakage will cause the loose formation in the upper part of the borehole to collapse and hold the drill during drilling construction, resulting in stagnation of drilling construction. In order to ensure safe and smooth drilling construction, high-viscosity mixed slurry or cement mixed slurry is required to pre-fill and reinforce the leaking formation in the lower borehole to ensure smooth drilling construction.

[0004] In the past, the anti-collapse agent, lignite, cement and other slurry materials were directly added into the mud pool, and the drilling plugging mud was prepared by manual mixing. However, if the drilling construction is carried out during the rainy season (for example, in the shaft freezing project of the Luyuan potash mine in the Republic of Congo, Africa, it faces the problems of rainy season and potash formation leakage at the same time), it is necessary to fully and quickly mix the mud materials with cement and other materials in a short time. The traditional method takes a long time and there is uneven mixing, which cannot be fully mixed with the mud and even causes the slurry materials to accumulate at the bottom of the mud pool.

[0005] Therefore, in order to quickly and fully mix the slurry preparation materials and mud in a short time and improve the effectiveness of drilling and plugging leaks in potash formations, it is necessary to develop specific slurry preparation equipment for innovative and effective applications. Summary of the invention

[0006] The main purpose of the present invention is to provide a drilling rig special slurry mixing funnel which can quickly and fully mix slurry preparation materials with mud in a short time and a use method thereof.

[0007] To achieve the above-mentioned purpose, the technical solution of the present invention is implemented as follows: a drilling rig-specific slurry mixing funnel comprises a fixed base and a funnel body arranged on the fixed base, the top of the funnel body is provided with a feed inlet, and the slurry material enters the funnel body from the feed inlet, and the two sides of the bottom of the funnel body are respectively provided with a slurry inlet and a slurry outlet connected to the interior, the mud enters the funnel body through the slurry inlet and mixes with the slurry material in the funnel body, and then flows out from the slurry outlet entrained with the slurry material.

[0008] Furthermore, a supporting platform is provided on the top of the funnel body, and the supporting platform is used to support the slurry material.

[0009] Furthermore, a weighing component is provided on the supporting platform for weighing the material placed on the supporting platform.

[0010] Furthermore, a support net is provided inside the funnel body, the support net is located above the slurry inlet and the slurry outlet, and the mesh diameter of the support net is larger than the particle diameter of the slurry material.

[0011] Furthermore, at least one first guide plate is arranged in the slurry outlet, and the first guide plate is used to guide the slurry to spirally rotate in the slurry outlet.

[0012] Furthermore, at least one second guide plate is provided in the slurry outlet, and the second guide plate is used to guide the slurry to enter the funnel body in a spiral rotation form.

[0013] Furthermore, a top cover is provided on the top of the funnel body, and the top cover is used to open and close the feed inlet on the top of the funnel body.

[0014] A method for using a special slurry mixing funnel for a drilling rig, comprising the special slurry mixing funnel for a drilling rig as described in any one of the above, the method comprising:

[0015] When preparing the slurry, pour the weighed slurry preparation materials into the funnel body, the inlet of the mud pump is connected to the mud pool, the outlet of the mud pump is connected to the slurry inlet, the slurry outlet is connected to the mud pool, the mud in the mud pool enters the funnel body through the slurry inlet, mixes with the slurry preparation materials in the funnel body, and then flows back to the mud pool from the slurry outlet together with the slurry preparation materials, and repeats multiple cycles until the slurry preparation is completed.

[0016] A method for using a special slurry mixing funnel for drilling rigs, comprising any one of the special slurry mixing funnels for drilling rigs described above, the method comprising: when conveying slurry, the inlet of the mud pump is connected to the mud pool, the outlet of the mud pump is connected to the slurry inlet, the slurry outlet leads to the wellbore, when the current slurry cannot stop the leak, pouring slurry preparation material into the funnel body, the mud in the mud pool enters the funnel body through the slurry inlet, mixes with the slurry preparation material in the funnel body, and then is transported from the slurry outlet to the wellbore with the slurry preparation material.

[0017] The beneficial effects of the present invention are embodied in:

[0018] In the present invention, when the slurry preparation material and the mud are mixed, the mud in the mud pool is pumped into the funnel body by a mud pump. After the mud is mixed with the slurry preparation material in the funnel body, the slurry preparation material is carried back to the mud pool from the slurry outlet. After multiple cycles, the mud in the mud pool and the slurry preparation material can be quickly and fully mixed in a short time without manual stirring, and the slurry preparation material is not easy to accumulate at the bottom of the mud pool.

[0019] The present invention can also make the slurry outlet on the funnel body lead to the mud pool or the drilling hole. When it is found that the existing slurry is not enough to plug the leak, large-grained aggregate, sawdust and other materials can be quickly poured into the funnel body, so that these materials are transported to the drilling hole together with the slurry to plug the leak, and the response is fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the attached picture:

[0021] Figure 1 It is a three-dimensional structural diagram of the special slurry mixing funnel for drilling rigs of the present invention;

[0022] Figure 2 It is a top view of the special slurry mixing funnel for drilling rigs of the present invention;

[0023] Figure 3 for Figure 2 Section view at AA in the middle.

[0024] Description of reference numerals:

[0025] 1. Fixed base; 2. Funnel body; 21. Feed inlet; 22. Slurry inlet; 23. Slurry outlet; 24. First guide plate; 25. Second guide plate; 3. Support platform; 4. Support net. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the invention.

[0027] See also Figures 1 to 3 .

[0028] The present invention discloses a special slurry mixing funnel for drilling rigs, comprising a fixed base 1 and a funnel body 2 arranged on the fixed base 1, a feed inlet 21 is arranged on the top of the funnel body 2, and slurry preparation material enters the funnel body 2 from the feed inlet 21, and a slurry inlet 22 and a slurry outlet 23 connected to the inside are respectively arranged on both sides of the bottom of the funnel body 2, and the mud in the mud pool enters the funnel body 2 through the slurry inlet 22, mixes with the slurry preparation material in the funnel body 2, and then flows out from the slurry outlet 23 to the mud pool or to the drilling port.

[0029] In specific implementation, when preparing the slurry in the mud pool, after calculating the weight of various slurry preparation materials that need to be added, they can be slowly poured into the slurry mixing funnel, and then the mud pump is started. The mud pump pumps the mud in the mud pool into the funnel body 2 through the slurry inlet 22. After the mud is mixed with the slurry preparation materials in the funnel body 2, the slurry preparation materials are carried back to the mud pool from the slurry outlet 23. After multiple cycles, the mud in the mud pool and the slurry preparation materials can be quickly and fully mixed in a short time.

[0030] However, due to the great uncertainty of the melt cavity and annular fissures in the potassium salt formation, the prepared slurry may not be able to complete the plugging. The slurry mixing funnel of the present invention can also be used in the process of transporting slurry to the drilling mouth. Specifically, the mud pump pumps the slurry into the funnel body 2, and then the slurry outlet 23 on the funnel body 2 leads to the mud pool or to the drilling mouth. When it is found that the existing slurry is not enough to plug the leak, large-grained aggregates (such as gravel), sawdust and other materials can be quickly poured into the funnel body 2, so that these materials are transported to the drilling mouth together with the slurry to plug the leak, and the response is rapid.

[0031] According to the present invention, when the slurry preparation material and the mud are mixed, no manual stirring is required, and the slurry preparation material and the mud are mixed quickly, the slurry preparation material is not easy to accumulate at the bottom of the mud pool, and the slurry preparation material and the mud can be quickly and fully mixed in a short time.

[0032] It should also be pointed out that for lighter density slurry materials (such as sawdust) or powdered slurry materials (such as cement), it is difficult to evenly mix this type of slurry materials in the mud using traditional stirring methods (sawdust will float on the mud, while cement will easily gather into larger clumps and stick to the bottom of the pool). However, after using a slurry mixing funnel, it will be easier to mix them in the mud (sawdust and cement will be directly entrained out, cement will not easily gather into clumps or will only gather into smaller clumps and will not easily stick to the bottom of the pool).

[0033] Preferably, the slurry inlet 22 and the outlet pipe of the mud pump can be connected by oil-receptacle quick connection. Because the mud pump and the oil-receptacle quick connection technology are common knowledge to those skilled in the art and are common parts on the market, they will not be described in detail here.

[0034] In one embodiment, a supporting platform 3 is provided on the top of the funnel body 2, and the supporting platform 3 is used to support the slurry material. With this design, workers can temporarily place bagged cement, sawdust and other materials on the supporting platform 3, so as to cut the bagged materials such as cement, sawdust and pour them into the funnel body 2.

[0035] In one embodiment, a weighing component is provided on the supporting platform 3 for weighing the material placed on the supporting platform 3. This design can more conveniently weigh the amount of slurry material placed.

[0036] Preferably, the weighing component can be a weighing scale, a platform scale, etc. in the prior art.

[0037] In one embodiment, a support net 4 is provided inside the funnel body 2, and the support net 4 is located above the slurry inlet 22 and the slurry outlet 23, and the mesh diameter of the support net 4 is larger than the particle diameter of the slurry material. With this design, the support net 4 can support a part of the pressure from the material above, reduce the pressure on the material at the slurry inlet 22 and the slurry outlet 23, make the material easier to mix with the mud and output from the slurry outlet 23 together with the mud, and at the same time, the setting of the support net 4 will not affect the normal falling of the material.

[0038] It should be pointed out that the support net 4 can also be a support orifice plate, a support rod group, etc.

[0039] In one embodiment, at least one first guide plate 24 is provided in the slurry outlet 23, and the first guide plate 24 is used to guide the slurry to spirally rotate in the slurry outlet 23. This design can make the slurry better mixed with the slurry material with a lighter density (such as sawdust) or the powdered slurry material (such as cement), so that the slurry material in the discharged slurry is not easy to be separated.

[0040] In one embodiment, at least one second guide plate 25 is provided in the slurry outlet 23, and the second guide plate 25 is used to guide the slurry to enter the funnel body 2 in the form of spiral rotation. This design, on the one hand, can make the slurry entering the funnel body 2 better mixed with the slurry material in the funnel body 2, and on the other hand, it can also more easily disturb the slurry material in the funnel body 2, and avoid the slurry material in the funnel body 2 from being unable to be discharged normally due to arching (that is, the bottom of the slurry material forms an arch and no longer falls); in other words, the slurry spirally entering the funnel body 2 is not easy to cause the slurry material in the funnel body 2 to arch, and can destroy the arch when it is initially arched.

[0041] In one embodiment, a top cover (not shown in the figure) is provided on the top of the funnel body 2, and the top cover is used to open and close the feed port 21 on the top of the funnel body 2. This design can prevent the mud pressure entering the funnel body 2 from overflowing from the top of the funnel body 2 due to excessive pressure.

[0042] A method for using a special slurry mixing funnel for a drilling rig, comprising the special slurry mixing funnel for a drilling rig, the method comprising:

[0043] When preparing the slurry, pour the weighed slurry preparation material into the funnel body 2, the inlet of the mud pump is connected to the mud pool, the outlet of the mud pump is connected to the slurry inlet 22, and the slurry outlet 23 is connected to the mud pool. The mud in the mud pool enters the funnel body 2 through the slurry inlet 22 and mixes with the slurry preparation material in the funnel body 2, and then flows back to the mud pool from the slurry outlet 23 along with the slurry preparation material, and repeats the cycle multiple times until the slurry preparation is completed.

[0044] A method for using a special slurry mixing funnel for a drilling rig, comprising the special slurry mixing funnel for a drilling rig, the method comprising:

[0045] When transporting slurry, the inlet of the mud pump is connected to the mud pool, the outlet of the mud pump is connected to the slurry inlet 22, and the slurry outlet 23 leads to the drilling head. When the current slurry cannot stop the leak, the slurry preparation material is poured into the funnel body 2, and the mud in the mud pool enters the funnel body 2 through the slurry inlet 22 and mixes with the slurry preparation material in the funnel body 2, and then is transported to the drilling head from the slurry outlet 23 along with the slurry preparation material.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0047] It should be noted that if the embodiments of the invention involve directional indications (such as up and down), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0048] In addition, the meaning of "and / or" appearing in the full text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "multiple" means more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the invention.

Claims

1. A special slurry mixing funnel for drilling rigs, characterized in that: The invention comprises a fixed base (1) and a funnel body (2) arranged on the fixed base (1); a feed inlet (21) is arranged on the top of the funnel body (2); slurry material enters the funnel body (2) from the feed inlet (21); a slurry inlet (22) and a slurry outlet (23) which are connected to the inside are respectively arranged on both sides of the bottom of the funnel body (2); slurry enters the funnel body (2) through the slurry inlet (22), mixes with the slurry material in the funnel body (2), and then flows out from the slurry outlet (23) along with the slurry material.

2. The special slurry mixing funnel for drilling rigs according to claim 1 is characterized in that: A supporting platform (3) is provided on the top of the funnel body (2), and the supporting platform (3) is used to support the slurry material.

3. The special slurry mixing funnel for drilling rigs according to claim 2 is characterized in that: The supporting platform (3) is provided with a weighing component for weighing the material placed on the supporting platform (3).

4. The special slurry mixing funnel for drilling rigs according to claim 1, 2 or 3, characterized in that: A support net (4) is arranged inside the funnel body (2); the support net (4) is located above the slurry inlet (22) and the slurry outlet (23); and the mesh diameter of the support net (4) is larger than the particle diameter of the slurry material.

5. The special slurry mixing funnel for drilling rigs according to claim 1, 2 or 3, characterized in that: At least one first guide plate (24) is arranged in the slurry outlet (23), and the first guide plate (24) is used to guide the slurry to rotate spirally in the slurry outlet (23).

6. The special slurry mixing funnel for drilling rigs according to claim 1, 2 or 3, characterized in that: At least one second guide plate (25) is arranged in the slurry outlet (23), and the second guide plate (25) is used to guide the slurry to enter the funnel body (2) in a spiral rotation form.

7. The special slurry mixing funnel for drilling rigs according to claim 1, 2 or 3, characterized in that: A top cover is provided on the top of the funnel body (2), and the top cover is used to open and close the feed inlet (21) on the top of the funnel body (2).

8. A method for using a special slurry mixing funnel for a drilling rig, characterized in that: The drilling rig-specific slurry mixing funnel according to any one of claims 1 to 7, the method comprising: When preparing the slurry, the weighed slurry preparation material is poured into the funnel body (2), the inlet of the mud pump is connected to the mud pool, the outlet of the mud pump is connected to the slurry inlet (22), the slurry outlet (23) is connected to the mud pool, the mud in the mud pool enters the funnel body (2) through the slurry inlet (22), mixes with the slurry preparation material in the funnel body (2), and then flows back to the mud pool from the slurry outlet (23) with the slurry preparation material, and the cycle is repeated multiple times until the slurry preparation is completed.

9. A method for using a special slurry mixing funnel for a drilling rig, characterized in that: The method comprises the following steps: when conveying slurry, the inlet of the mud pump is connected with the mud pool, the outlet of the mud pump is connected with the slurry inlet (22), the slurry outlet (23) leads to the wellbore, and when the current slurry cannot stop the leak, the slurry preparation material is poured into the funnel body (2), the mud in the mud pool enters the funnel body (2) through the slurry inlet (22), is mixed with the slurry preparation material in the funnel body (2), and is then conveyed to the wellbore from the slurry outlet (23) along with the slurry preparation material.