A mud filtering device for natural gas drilling engineering

Abstract

The utility model discloses a mud filtering device for natural gas drilling engineering, comprising a square frame, a mud storage tank is arranged inside the square frame, four groups of symmetrical fixing buckles are arranged inwardly on the upper end surface of the square frame, a diversion tank with a downward conical interior is arranged on the upper part of the square frame, and connecting buckles cooperating with the fixing buckles are arranged on both sides of the lower part of the diversion tank, a drainage mechanism is arranged on the upper side of the diversion tank, a sand settling paddle and a driving mechanism cooperating with the sand settling paddle are arranged on the lower side of the diversion tank, and a feed pipe is arranged in the middle of the diversion tank. The beneficial effect of the utility model is that the mud is separated and filtered by the sand settling paddle and the drainage mechanism in the equipment, so the filtering efficiency of the mud is greatly improved.

Description

Technical Field

[0001] The utility model relates to a mud filtering device for natural gas drilling engineering, belonging to the technical field of mud filtering. Background Art

[0002] Natural gas is buried in rocks with pores, cracks or caves at depths ranging from tens of meters to thousands of meters underground. In order to find and exploit natural gas, people drill a channel from the ground to the underground oil and gas layers. This process is called natural gas drilling. A large amount of mud is prone to accumulation during the drilling process. In order to avoid the pollution of the drilling mud to the environment and the difficulty in transportation, the solid matter such as slag in the mud is separated from the mud. The traditional screening and filtering device simply sets a filter or filter element to filter the mud to achieve solid-liquid separation. However, when the traditional screening and filtering device is used to screen the natural gas drilling mud with high viscosity and rich in solid matter, the mud often passes through the filter slowly due to the high viscosity of the mud, the solid matter and the mud are difficult to be screened and separated, and even the mud blocks the screening filter. Therefore, a device to improve the mud filtration efficiency is needed. Utility Model Content

[0003] The utility model discloses a mud filtering device for natural gas drilling engineering, aiming at solving the problem of slow mud filtering speed.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: it includes a square frame, a mud storage tank is arranged inside the square frame, four groups of symmetrical fixing buckles are arranged inwardly on the upper end surface of the square frame, a diversion tank with a downward conical interior is arranged on the upper part of the square frame, and connecting buckles cooperating with the fixing buckles are arranged on both sides of the lower part of the diversion tank, a drainage mechanism is arranged on the upper side of the interior of the diversion tank, a sand settling paddle and a driving mechanism cooperating with the sand settling paddle are arranged on the lower side of the interior of the diversion tank, and a feed pipe is arranged in the middle of the diversion tank.

[0005] Furthermore, the driving mechanism includes a driving shaft, a second rotating tooth is provided at the inner end of the driving shaft, a third rotating tooth is provided at the outer end of the driving shaft, the driving shaft passes through the diverter tank, and a bearing is provided at the connection between the driving shaft and the diverter tank, a third fixed frame is provided on the outer surface of the diverter tank and on the driving shaft, a driving motor is provided on the upper part of the third fixed frame, and the driving motor is connected to the third rotating tooth through a chain.

[0006] Furthermore, the drainage mechanism includes a first fixed frame, which is fixed parallel to the upper inner side of the diversion tank, a stirring paddle is provided in the middle of the first fixed frame, a filter cover is provided at the lower part of the stirring paddle, a drainage pipe is provided on the rear end face of the stirring paddle, and the rear end of the drainage pipe is connected to a water pump.

[0007] Furthermore, a plurality of filter holes are provided on the surface of the filter cover.

[0008] Furthermore, two sets of second fixing frames and fourth fixing frames parallel to each other are sequentially arranged inside the diversion tank and at the lower part of the drainage mechanism, the sand settling paddle is fixed between the two sets of second fixing frames, and a first rotating tooth is arranged at the top of the sand settling paddle.

[0009] Furthermore, the first rotating tooth and the second rotating tooth are helical gears that mesh and rotate.

[0010] Furthermore, the outer surface of the diversion tank is provided with three sets of mutually parallel pipe racks, the pipe racks fix the drainage pipe and the feed pipe, the upper end of the feed pipe is close to the inner wall of the diversion tank, and the inside of the diversion tank is provided with a spiral downward groove.

[0011] Furthermore, a plurality of circular holes are provided on the surface of the sand settling paddle.

[0012] Beneficial effects of the utility model:

[0013] (1) The upper end of the feed pipe is in close contact with the inner wall of the diversion tank, and a spiral downward groove is provided inside the diversion tank. After the mud enters the diversion tank, it is separated by gravity and the centrifugal force generated by the groove in the tank, thereby improving the filtering and separation efficiency of the mud.

[0014] (2) There are several circular holes on the surface of the sediment paddle to improve the rotary separation effect of the sediment and avoid blockage caused by the heavy sediment in the lower part, which makes it impossible to remove the sediment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an isometric view of the utility model;

[0016] Figure 2 It is a left side cross-sectional view of the utility model;

[0017] Figure 3 It is a right side cross-sectional view of the utility model;

[0018] Figure 4 It is a partial enlarged view of the utility model;

[0019] Figure 5 This is the internal structure diagram of the utility model.

[0020] In the figure, 1-square frame, 2-mud storage tank, 3-diversion tank, 4-fixing buckle, 5-driving mechanism, 6-drainage mechanism, 7-sand settling paddle, 8-connecting buckle, 9-first fixing frame, 10-fourth fixing frame, 11-second fixing frame, 12-feeding pipe, 13-pipe rack;

[0021] 5a-driving shaft, 5b-bearing, 5c-driving motor, 5d-second rotating gear, 5e-third fixing frame, 5f-chain, 5g-chain;

[0022] 6a-filter housing, 6b-stirring paddle, 6c-drain pipe, 6d-water pump;

[0023] 7a-First rotating tooth. DETAILED DESCRIPTION

[0024] The present invention will now be described in further detail in conjunction with specific embodiments and the accompanying drawings. The following embodiments may enable those skilled in the art to more fully understand the present invention, but these embodiments are not intended to limit the scope of protection of the present invention. The "one embodiment" or "embodiment" referred to herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] See also Figures 1 to 5 The utility model provides a technical solution for a mud filtering device for a natural gas drilling project: it comprises a square frame 1, a mud storage tank 2 is arranged inside the square frame 1, four symmetrical groups of fixing buckles 4 are arranged inwardly on the upper end surface of the square frame 1, a diversion tank 3 with a downward conical interior is arranged on the upper part of the square frame 1, and connecting buckles 8 cooperating with the fixing buckles 4 are arranged on both sides of the lower part of the diversion tank 3, a drainage mechanism 6 is arranged on the upper side of the diversion tank 3, a sand settling paddle 7 and a driving mechanism 5 cooperating with the sand settling paddle 7 are arranged on the lower side of the diversion tank 3, and a feed pipe 12 is arranged in the middle of the diversion tank 3.

[0026] See also Figure 4 The driving mechanism 5 includes a driving shaft 5a, a second rotating tooth 5d is provided at the inner end of the driving shaft 5a, a third rotating tooth 5g is provided at the outer end of the driving shaft 5a, the driving shaft 5a passes through the diversion tank 3, and a bearing 5b is provided at the connection between the driving shaft 5a and the diversion tank 3, a third fixing frame 5e is provided on the outer surface of the diversion tank 3 and on the driving shaft 5a, a driving motor 5c is provided on the upper part of the third fixing frame 5e, and the driving motor 5c is connected to the third rotating tooth 5g through a chain 5f.

[0027] See also Figure 2 and Figure 3 The drainage mechanism 6 includes a first fixed frame 9, which is fixed parallel to the upper inner side of the diversion tank 3. A stirring paddle 6b is provided in the middle of the first fixed frame 9, a filter cover 6a is provided at the lower part of the stirring paddle 6b, a drainage pipe 6c is provided at the rear end surface of the stirring paddle 6b, and the rear end of the drainage pipe 6c is connected to a water pump 6d.

[0028] See also Figure 3: A number of filter holes are provided on the surface of the filter cover 6a to prevent large particles of sediment from entering the drainage mechanism and causing clogging of the stirring paddle 6b, thereby improving the filtering effect.

[0029] See also Figure 2 and Figure 5 Two sets of second fixing frames 11 and fourth fixing frames 10 are arranged in parallel with each other in sequence inside the diversion tank 3 and at the lower part of the drainage mechanism 6. The sand settling paddle 7 is fixed between the two sets of second fixing frames 11. The top of the sand settling paddle 7 is provided with a first rotating tooth 7a.

[0030] See also Figure 2 and Figure 4 : The first rotating teeth 7a and the second rotating teeth 5d rotate in meshing engagement as helical gears.

[0031] See also Figure 1 and Figure 2 : The outer surface of the diversion tank 3 is provided with three sets of mutually parallel pipe racks 13, the pipe racks 13 fix the drainage pipe 6c and the feed pipe 12, the upper end of the feed pipe 12 is close to the inner wall of the diversion tank 3, and the inside of the diversion tank 3 is provided with a spiral downward groove. After the mud enters the diversion tank 3, it is separated by gravity and the centrifugal force generated by the groove in the tank, thereby improving the filtering and separation efficiency of the mud.

[0032] See also Figure 3 : Several circular holes are provided on the surface of the sediment paddle 7 to improve the rotary separation effect of the sediment and avoid blockage caused by the heavy sediment in the lower part, which makes it impossible to remove the sediment.

[0033] How it works: See Figures 1 to 5 The mud enters the middle part of the diversion tank 3 through the feed pipe 12, and the mud is stratified by inertia. The sediment rotates through the groove on the inner wall of the diversion tank 3, and enters the mud storage tank 2 after being stirred by the sedimentation paddle 7. The separated water is pumped out by the drainage pump 6d in the drainage mechanism and filtered through the filter cover 6a.

[0034] With the above-mentioned ideal embodiment of the utility model as inspiration, through the above-mentioned description, relevant staff can make various changes and modifications without deviating from the technical idea of ​​the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model. The technical scope of the utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A mud filtering device for natural gas drilling engineering, characterized in that: The utility model comprises a square frame (1), wherein a mud storage tank (2) is arranged inside the square frame (1), and four groups of symmetrical fixing buckles (4) are arranged inwardly on the upper end surface of the square frame (1), and a diversion tank (3) with a downward conical interior is arranged on the upper part of the square frame (1), and connecting buckles (8) cooperating with the fixing buckles (4) are arranged on both sides of the lower part of the diversion tank (3), and a drainage mechanism (6) is arranged on the upper side of the inside of the diversion tank (3), and a sand settling paddle (7) and a driving mechanism (5) cooperating with the sand settling paddle (7) are arranged on the lower side of the inside of the diversion tank (3), and a feeding pipe (12) is arranged in the middle part of the diversion tank (3).

2. A mud filtering device for natural gas drilling engineering according to claim 1, characterized in that: The driving mechanism (5) comprises a driving shaft (5a), the inner end of the driving shaft (5a) is provided with a second rotating tooth (5d), the outer end of the driving shaft (5a) is provided with a third rotating tooth (5g), the driving shaft (5a) passes through the diversion tank (3), and a bearing (5b) is provided at the connection between the driving shaft (5a) and the diversion tank (3), a third fixing frame (5e) is provided on the outer surface of the diversion tank (3) and on the driving shaft (5a), a driving motor (5c) is provided on the upper part of the third fixing frame (5e), ​​and the driving motor (5c) is connected to the third rotating tooth (5g) through a chain (5f).

3. The mud filtering device for natural gas drilling engineering according to claim 1 is characterized in that: The drainage mechanism (6) comprises a first fixing frame (9), the first fixing frame (9) being fixed in parallel to the upper inner side of the diversion tank (3), a stirring paddle (6b) being provided in the middle of the first fixing frame (9), a filter cover (6a) being provided at the lower part of the stirring paddle (6b), a drainage pipe (6c) being provided at the rear end surface of the stirring paddle (6b), and a rear end portion of the drainage pipe (6c) being connected to a water pump (6d).

4. A mud filtering device for natural gas drilling engineering according to claim 3, characterized in that: A plurality of filter holes are provided on the surface of the filter cover (6a).

5. The mud filtering device for natural gas drilling engineering according to claim 2 is characterized in that: A second fixing frame (11) and a fourth fixing frame (10) which are parallel to each other are sequentially arranged inside the diversion tank (3) and at the lower part of the drainage mechanism (6); the sand settling paddle (7) is fixed between the two sets of second fixing frames (11); and a first rotating tooth (7a) is arranged at the top end of the sand settling paddle (7).

6. A mud filtering device for natural gas drilling engineering according to claim 5, characterized in that: The first rotating tooth (7a) and the second rotating tooth (5d) are helical gears that mesh and rotate.

7. The mud filtering device for natural gas drilling engineering according to claim 3 is characterized by: The outer surface of the diversion tank (3) is provided with three sets of mutually parallel pipe racks (13), and the pipe racks (13) fix the drainage pipe (6c) and the feed pipe (12). The upper end of the feed pipe (12) is tightly attached to the inner wall of the diversion tank (3), and the inside of the diversion tank (3) is provided with a spiral downward groove.

8. The mud filtering device for natural gas drilling engineering according to claim 1 is characterized by: A plurality of circular holes are provided on the surface of the sand settling paddle (7).

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