Pipe washing slurry collecting device for petroleum drilling
By designing a slurry collection device for the flushing pipe and collecting overflowed mud using a mud ring, the problem of increased equipment corrosion and maintenance workload caused by mud accumulation and leakage is solved, and the equipment protection and drilling efficiency are improved.
Patent Information
- Application Number
- CN202421776928.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-25
AI Technical Summary
During oil drilling, mud will overflow and accumulate on top drive equipment during transportation, resulting in increased equipment corrosion and maintenance workload and affecting drilling efficiency.
A flush pipe mud collection device is designed, including a mud collection box and a mud swing ring. The overflowing mud is thrown into the collection tank through the mud swing ring to avoid contact with the top drive spindle and reduce the risk of corrosion.
It effectively avoids mud accumulation and leakage, protects the top drive equipment, reduces maintenance workload and equipment corrosion risks, and ensures the efficiency of drilling operations.
Smart Images
Figure CN222949824U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oil drilling, in particular to a pipe flushing mud collection device used for oil drilling. Background Art
[0002] The full name of top drive is top drive drilling device. It can directly rotate the drill pipe from the upper space of the derrick and send it downward along the special guide rail to complete various drilling operations such as drill pipe rotation drilling, circulating drilling fluid, connecting columns, making and breaking out, and back-marking. It is an important equipment to ensure the efficiency and safety of oil and gas drilling operations. It is mainly composed of lifting ring, main shaft, sleeve, bearing thrust flange, gear box, drilling motor, bell, gooseneck and mechanical seal flush pipe. Among them, the mechanical seal flush pipe is the channel for high-pressure and large-displacement mud during drilling operations, and is installed inside the bell at the upper end of the main shaft.
[0003] At present, in traditional oil drilling operations, mud is an indispensable component of the drilling process, and plays an important role in conveying drill cuttings, cooling the drill bit, and balancing formation pressure. However, during the conveying process, mud will overflow from the connection between the upper end of the top drive main shaft and the mechanical seal flush pipe, and gradually accumulate and penetrate on the upper part of the top drive as it is used, causing equipment corrosion, increasing cleaning and maintenance workload, and in severe cases, even damaging the equipment and affecting drilling efficiency.
[0004] Therefore, there is an urgent need for a flushing mud collection device for oil drilling that can avoid mud accumulation and leakage, protect top drive equipment, and ensure operating efficiency. 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 flushing pipe mud collection device for oil drilling, which solves the technical problem of the prior art that mud accumulation and leakage lead to top drive pollution or even damage, thus affecting the operation efficiency.
[0007] (II) Technical solution
[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:
[0009] The utility model provides a mud collection device for a flushing pipe used for oil drilling, comprising a mud collection box and a mud throwing ring; the mud collection box comprises an integrally formed base, an annular retaining wall and a collecting groove; the annular retaining wall is located above the base, the collecting groove is located at one side of the base, and the annular retaining wall is connected to the collecting groove; a through hole is opened in the middle of the base, the base can be fixed in a bell cover, the upper end of a top drive main shaft can be connected to a mechanical seal flushing pipe through the through hole, the mud throwing ring is installed at the connection between the upper end of the top drive main shaft and the mechanical seal flushing pipe, the annular retaining wall, the base and the upper end of the top drive main shaft can form a mud collection chamber, and the collecting groove is communicated with the mud collection chamber.
[0010] Optionally, the top of the base is an inclined surface, and the connection between the collecting trough and the mud collecting chamber is the lowest point of the inclined surface.
[0011] Optionally, the collecting tank comprises a first collecting area and a second collecting area which are interconnected; the first collecting area is higher than the second collecting area, the first collecting area is connected to the mud collecting chamber, and the mud can flow from the first collecting area into the second collecting area.
[0012] Optionally, a support is provided below the collecting tank, and the collecting tank is supported on the bell jar through the support.
[0013] Optionally, the outer side of the mud-slinging ring is provided with a mud-slinging inclined surface; the inner side of the mud-slinging ring is provided with a plurality of positioning blocks.
[0014] Optionally, the bottom of the base has a plurality of mounting legs.
[0015] Optionally, an opening is reserved on the mounting leg.
[0016] Optionally, the mud-slinging ring is a nitrile rubber ring.
[0017] (III) Beneficial effects
[0018] The beneficial effects of the utility model are:
[0019] The utility model provides a flushing pipe mud collection device for oil drilling, in which the top drive main shaft can drive the mud throwing ring to rotate, and the mud collection box remains stationary. The mud overflowing from the connection between the mechanical seal flushing pipe and the upper end of the top drive main shaft will be thrown into the mud collection chamber through the mud throwing ring, and then flow into the collection tank, thereby ensuring that the mud will not contact the top drive main shaft, reducing the corrosion risk of the top drive main shaft. Moreover, the mud is concentrated in the mud collection chamber and the collection tank, and only the mud collection box needs to be cleaned, which reduces the workload. The one-piece mud collection box has no weak connection, which can ensure its long service life; the mud throwing ring can be directly sleeved on the bottom end of the mechanical seal flushing pipe; the mud collection box can be directly embedded in the bell cover, which is convenient and quick to install and disassemble, and easy to maintain later. Compared with the existing technology, it can completely collect the mud overflowing from the connection between the mechanical seal flushing pipe and the top drive main shaft into the mud collection box through the mud collection box and the mud slinging ring, isolate the mud from the top drive main shaft, ensure the cleanliness of the top drive, reduce the maintenance workload and equipment corrosion risk, and avoid affecting the operating efficiency of the top drive. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the installation of the pipe flushing mud collection device in a specific embodiment of the utility model;
[0021] Figure 2 It is an installation cross-sectional view of the pipe flushing mud collection device in a specific embodiment of the utility model;
[0022] Figure 3 It is a structural schematic diagram of a mud collection box in a specific embodiment of the utility model;
[0023] Figure 4 It is a side view schematic diagram of a mud collection box in a specific embodiment of the utility model;
[0024] Figure 5 It is a schematic front view of a mud collection box in a specific embodiment of the utility model;
[0025] Figure 6 It is a structural schematic diagram of a mud-slinging ring in a specific embodiment of the utility model;
[0026] Figure 7 It is a schematic front view of a mud-slinging ring in a specific embodiment of the utility model.
[0027] [Description of Reference Numerals]
[0028] 1: mud collection box; 11: base; 12: annular retaining wall; 13: collection tank; 131: first collection area; 132: second collection area; 14: mounting leg; 15: support;
[0029] 2: mud throwing ring; 21: mud throwing slope; 22: positioning block;
[0030] 3: bell jar;
[0031] 4: Top drive spindle. DETAILED DESCRIPTION
[0032] 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.
[0033] like Figure 1 and Figure 2 As shown, the present embodiment provides a mud collection device for a flushing pipe for oil drilling, comprising a mud collection box 1 and a mud slinging ring 2; the mud collection box 1 comprises an integrally formed base 11, an annular retaining wall 12 and a collecting groove 13; the annular retaining wall 12 is located above the base 11, the collecting groove 13 is located on one side of the base 11, and the annular retaining wall 12 is connected to the collecting groove 13; a through hole is opened in the middle of the base 11, the base 11 can be fixed in the bell 3, the upper end of the top drive main shaft 4 can be connected to the mechanical seal flushing pipe through the through hole, the mud slinging ring 2 is installed at the connection between the upper end of the top drive main shaft 4 and the mechanical seal flushing pipe, the annular retaining wall 12, the base 11 and the upper end of the top drive main shaft 4 can form a mud collection chamber, the collecting groove 13 is connected to the mud collection chamber, the top of the base 11 is an inclined surface, and the connection between the collecting groove 13 and the mud collection chamber is the lowest point of the inclined surface, so that the mud can be gathered in the collecting groove 13. In this specific embodiment, the mud collecting box 1 is formed by pressing nitrile rubber, and the mud throwing ring 2 is a nitrile rubber ring.
[0034] Specifically, the top drive main shaft 4 can drive the mud-slinging ring 2 to rotate, and the mud collecting box 1 remains stationary. The mud overflowing from the connection between the mechanical seal flushing pipe and the upper end of the top drive main shaft 4 will be thrown into the mud collecting chamber through the mud-slinging ring 2, and then flow into the collecting tank 13, thereby ensuring that the mud will not contact the top drive main shaft 4, reducing the corrosion risk of the top drive main shaft 4. Moreover, the mud is concentrated in the mud collecting chamber and the collecting tank 13, and only the mud collecting box 1 needs to be cleaned, which reduces the workload. The one-piece mud collecting box 1 has no weak connection, which can ensure its long service life; the mud-slinging ring 2 can be directly sleeved on the bottom end of the mechanical seal flushing pipe; the mud collecting box 1 can be directly embedded in the bell jar 3, which is convenient and quick to install and disassemble, and easy for later maintenance. Compared with the prior art, the mud overflowing from the connection between the mechanical seal flushing pipe and the top drive main shaft 4 can be completely collected into the mud collecting box 1 through the mud collecting box 1 and the mud slinging ring 2, and the mud can be isolated from the top drive main shaft 4, thereby ensuring the cleanliness of the top drive, reducing the maintenance workload and the risk of equipment corrosion, and avoiding affecting the operating efficiency of the top drive.
[0035] Furthermore, if Figure 3-Figure 5 As shown, the collecting tank 13 includes a first collecting area 131 and a second collecting area 132 which are connected to each other; the first collecting area 131 is higher than the second collecting area 132, and the first collecting area 131 is connected to the mud collecting chamber, and the mud can flow from the first collecting area 131 to the second collecting area 132, thereby preventing the mud from flowing back. In this specific embodiment, the connection between the first collecting area 131 and the mud collecting chamber has a certain slope, so that the mud can flow into the first collecting area 131, and a certain capacity can also be increased.
[0036] Furthermore, if Figure 4 and Figure 5 As shown, the bottom of the base 11 has a plurality of mounting legs 14, and the base 11 can be supported in the bell 3 through the plurality of mounting legs 14, and has good bearing capacity. In this specific embodiment, there is a certain gap between the through hole of the mud collection box 1 and the mechanical seal flushing pipe, which can avoid affecting the rotation of the mechanical seal flushing pipe; the mounting legs 14 have openings, and the mounting legs 14 can be connected to the outer wall of the bell 3 or the flange bolts of the bell 3 through the openings through wires or lock wires as needed. There is a support 15 below the collection tank 13, and the collection tank 13 is supported on the bell 3 through the support 15, which can ensure the stability of the collection tank 13.
[0037] Furthermore, if Figure 6 and Figure 7 As shown, the outer side of the mud-slinging ring 2 is provided with a mud-slinging inclined surface 21, which can facilitate mud to fall into the mud collecting box 1. The inner side of the mud-slinging ring 2 is provided with a plurality of positioning blocks 22, which are matched with the nut mounting holes at the bottom of the mechanical seal flushing pipe, and can prevent the mud-slinging ring 2 and the mechanical seal flushing pipe from rotating relative to each other.
[0038] The use of a flushing pipe mud collection device for oil drilling provided in this specific embodiment is as follows: the top drive main shaft 4 drives the mechanical seal flushing pipe and the mud slinging ring 2 to rotate, the mud collection box 1 is stationary, and mud overflows from the connection between the mechanical seal flushing pipe and the upper end of the top drive main shaft 4, and the overflowed mud falls into the mud collection cavity along the mud slinging slope 21 outside the mud slinging ring 2, and then the mud flows into the collection tank 13. It is only necessary to clean the mud collection box 1 regularly to ensure that the top drive and the mechanical seal flushing pipe are clean and tidy.
[0039] 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.
[0040] 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.
[0041] 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.
[0042] 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.
[0043] 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 pipe flushing mud collection device for oil drilling, characterized in that: It comprises a mud collecting box (1) and a mud throwing ring (2); The mud collection box (1) comprises an integrally formed base (11), an annular retaining wall (12) and a collection groove (13); The annular retaining wall (12) is located above the base (11), the collecting groove (13) is located on one side of the base (11), and the annular retaining wall (12) is connected to the collecting groove (13); A through hole is provided in the middle of the base (11); the base (11) can be fixed in the bell housing (3); the upper end of the top drive main shaft (4) can be connected to the mechanical seal flushing pipe via the through hole; the mud slinging ring (2) is installed at the connection between the upper end of the top drive main shaft (4) and the mechanical seal flushing pipe; the annular retaining wall (12), the base (11) and the upper end of the top drive main shaft (4) can form a mud collecting chamber; the collecting groove (13) is connected to the mud collecting chamber.
2. A pipe flushing mud collection device for oil drilling as claimed in claim 1, characterized in that: The top of the base (11) is an inclined surface, and the connection between the collecting groove (13) and the mud collecting chamber is the lowest point of the inclined surface.
3. A pipe flushing mud collection device for oil drilling as claimed in claim 1, characterized in that: The collecting tank (13) comprises a first collecting area (131) and a second collecting area (132) which are connected to each other; The first collecting area (131) is higher than the second collecting area (132); the first collecting area (131) is connected to the mud collecting chamber; mud can flow from the first collecting area (131) into the second collecting area (132).
4. A pipe flushing mud collection device for oil drilling as claimed in claim 1, characterized in that: A support (15) is provided below the collecting tank (13), and the collecting tank (13) is supported on the bell housing (3) via the support (15).
5. A pipe flushing mud collection device for oil drilling as claimed in claim 1, characterized in that: The outer side of the mud-slinging ring (2) is provided with a mud-slinging inclined surface (21); and the inner side of the mud-slinging ring (2) is provided with a plurality of positioning blocks (22).
6. A pipe flushing mud collection device for oil drilling as claimed in claim 1, characterized in that: The bottom of the base (11) is provided with a plurality of mounting legs (14).
7. A pipe flushing mud collection device for oil drilling as claimed in claim 6, characterized in that: An opening is reserved on the mounting leg (14).
8. A pipe flushing mud collection device for oil drilling as claimed in claim 1, characterized in that: The mud-slinging ring (2) is a nitrile rubber ring.