CN220214726U - Drilling fluid preparation device - Google Patents

Abstract

The utility model discloses a drilling fluid preparation device which comprises a preparation tank and a circulating pipe, wherein one end of the circulating pipe is communicated with the side wall of the lower part of the preparation tank, the other end of the circulating pipe inwards penetrates through the upper wall of the preparation tank, a circulating pump is arranged on the circulating pipe, the upper wall of the preparation tank is provided with a motor, an output shaft of the motor is fixedly connected with a rotating shaft, and the rotating shaft downwards penetrates into the preparation tank and is fixedly connected with stirring blades. As the bulges are arranged in the utility model, the side pipes inevitably collide with the bulges in the rotating process, so that the orientation of the side pipes is continuously changed, the preparation such as the barite powder thrown out by the side pipes is spread over the preparation tank, and the uniform mixing of drilling fluid is accelerated.

Description

Drilling fluid preparation device

Technical Field

The utility model relates to the technical field of gas layer drilling, in particular to a drilling fluid preparation device.

Background

When the gas layer is drilled, drilling fluid is needed to be used, the drilling fluid is prepared on the ground, a plurality of preparations such as barite powder are needed to be added during the preparation, the additive is uniformly mixed into the drilling fluid by a circulating pump, the viscosity of the prepared drilling fluid is higher due to the performance requirement of the drilling fluid, and the shearing resistance of the fluid with higher viscosity is higher, so that the difficulty of uniformly stirring and mixing various preparations into the drilling fluid is higher, the preparations such as the barite powder are often needed to be rapidly mixed into the drilling fluid in the prior art, and the uniform mixing speed of the conventional preparation device in the prior art is slower due to the viscosity problem, so that the timely requirement of the drilling fluid cannot be met.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a drilling fluid preparation device.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a drilling fluid preparation device, includes prepares jar and circulating pipe, the one end of circulating pipe communicates the lower part lateral wall of preparing the jar, and the other end inwards runs through the upper wall of preparing the jar, be provided with the circulating pump on the circulating pipe, the upper wall of preparing the jar is provided with the motor, the output shaft fixedly connected with pivot of motor, the pivot runs through downwards to prepare in the jar and fixedly connected with stirring leaf.

Preferably, the part of the circulating pipe above the preparation tank is connected with a charging barrel, the inner wall of the preparation tank is fixedly connected with an inner barrel, the rotating shaft penetrates through the upper wall and the lower wall of the inner barrel, and the stirring blade is positioned at the lower side of the inner barrel.

Preferably, the middle part of pivot is provided with the hollow tube, the hollow tube is hollow structure, the side opening has been seted up to the one section that the hollow tube is located the inner tube inside, side opening intercommunication hollow tube and inner tube, the lateral wall of pivot is connected with the side tube, side tube intercommunication hollow tube.

Preferably, the side tube is a hose, and the lower wall of the inner tube and the side wall of the preparation tank are fixed with protrusions capable of colliding with the side tube in a rotating state.

Preferably, the lower wall of the preparation tank is fixedly connected with a baffle plate, and the baffle plate is positioned between the circulating pipe and a connecting port and a stirring blade of the side wall of the lower part of the preparation tank.

Compared with the prior art, the utility model has the following advantages:

1. according to the utility model, the circulating pump pumps the preparation along with the drilling fluid into the inner cylinder, performs primary mixing in the inner cylinder, enters the hollow pipe through the side hole, and is thrown out to various positions of the preparation tank under the action of centrifugal force after entering the side pipe, and the stirring blades continuously stir the drilling fluid, so that the rapid and uniform mixing of the drilling fluid is realized.

2. The utility model is provided with the bulge in the application. The side pipe inevitably collides with each bulge in the rotating process, so that the direction of the side pipe is continuously changed, the thrown preparations such as barite powder are distributed all over the preparation tank, and the uniform mixing of drilling fluid is accelerated.

Drawings

FIG. 1 is a schematic diagram of a drilling fluid preparation apparatus according to the present utility model;

FIG. 2 is a schematic illustration of a device for preparing a drilling fluid according to the present utility model;

fig. 3 is a schematic view of a partial structure of a hollow tube of a rotating shaft according to the present utility model.

In the figure: 1 a preparation tank, 2 a circulating pipe, 3 a circulating pump, 4 a charging barrel, 5 a motor, 6 a rotating shaft, 7 stirring blades, 8 an inner barrel, 9 an empty pipe, 10 a side pipe, 11 a bulge and 12 a baffle plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-3, a drilling fluid preparation device comprises a preparation tank 1 and a circulating pipe 2, wherein one end of the circulating pipe 2 is communicated with the side wall of the lower part of the preparation tank 1, the other end of the circulating pipe inwards penetrates through the upper wall of the preparation tank 1, a circulating pump 3 is arranged on the circulating pipe 2, a feeding cylinder 4 is connected to the part, above the preparation tank 1, of the circulating pipe 2, a motor 5 is arranged on the upper wall of the preparation tank 1, a rotating shaft 6 is fixedly connected to an output shaft of the motor 5, and the rotating shaft 6 downwards penetrates into the preparation tank 1 and is fixedly connected with a stirring blade 7. The drilling fluid is loaded in the preparation tank 1, the preparations such as the barite powder and the like are loaded in the charging barrel 4, and when the preparation tank is specifically used, the circulating pump 3 is started, the circulating pump 3 pumps the drilling fluid around the side wall of the lower part of the preparation tank 1 to the upper part of the preparation tank 1, and the preparations in the charging barrel 4 enter the upper part of the preparation tank 1 along with the drilling fluid to form preliminary mixing.

The inner wall fixedly connected with inner tube 8 of preparing jar 1, pivot 6 run through the upper and lower two walls of inner tube 8, and stirring leaf 7 is located the downside of inner tube 8, and circulating pump 3 pumps the preparation along with the drilling fluid into inner tube 8 in, carries out preliminary mixing in inner tube 8, then gets into in preparing jar 1, accomplishes the rapid mixing under the stirring effect of stirring leaf 7.

Referring to fig. 3, the middle part of the rotating shaft 6 is provided with an empty pipe 9, the rotating shaft 6 and the empty pipe 9 are coaxially and fixedly connected together, the empty pipe 9 is of a hollow structure, a side hole is formed in a section of the hollow pipe 9 positioned inside the inner barrel 8, an opening corresponding to the side hole is also formed in the rotating shaft 6, the side hole is communicated with the empty pipe 9 and the inner barrel 8, the side wall of the rotating shaft 6 is connected with a side pipe 10, the side pipe 10 is communicated with the empty pipe 9, drilling fluid after preliminary mixing enters the empty pipe 9 through the side hole, and then enters the side pipe 10 and is thrown out to various parts of the preparation tank 1 under the action of centrifugal force, and the stirring blades 7 continue stirring the drilling fluid, so that the rapid and uniform mixing of the drilling fluid is realized.

The side tube 10 is a hose, and a protrusion 11 capable of colliding with the side tube 10 in a rotating state is fixed to the lower wall of the inner tube 8 and the side wall of the preparation tank 1. Since the protrusions 11 are provided in this application. The side pipe 10 is not directly contacted with the lower wall of the inner cylinder 8 or the bulge 11 on the side wall of the preparation tank 1 in a horizontal free extension state, namely the lowest point of the bulge 11 on the lower wall of the inner cylinder 8 is higher than the joint of the side pipe 10 and the rotating shaft 6, so that the side pipe 10 is prevented from being excessively violently impacted with the bulge 11 when rotating; it should be noted that, collision is inevitably generated between the side pipe 10 and each protrusion 11 in the rotation process, because the density of the drilling fluid on the inner side and the outer side of the side pipe 10 is not uniform in the process of throwing out the primarily mixed drilling fluid in a rotating manner, and the side pipe 10 deflects up, down, left and right to a certain extent, and the deflection can cause the side pipe 10 to collide with the protrusions 11 on the upper part of the side pipe upwards, so that the pipe mouth orientation of the side pipe 10 is changed; further, as described above, the deflection of the side pipe 10 inevitably collides with the protrusions 11 at the side thereof during the rotation process, so that the direction of the pipe orifice of the side pipe 10 is changed, and the direction of the side pipe 10 is changed along with the self-deflection caused by the uneven density of the drilling fluid at the inner side and the outer side of the side pipe 10, so that the preparation such as the barite powder thrown out by the side pipe is spread throughout the preparation tank 1, and the uniform mixing of the drilling fluid is accelerated.

The shortest distance of the side pipe 10 from the stirring vane 7 is greater than the maximum extension of the side pipe 10. That is, when the side pipe 10 is in a horizontal state in a rotating state, the distance between the side pipe 10 and the stirring blade 7 is larger than the length of the side pipe 10, so that the side pipe 10 does not contact with the stirring blade 7 even if naturally falls down completely, and the side pipe 10 is prevented from being wound around the stirring blade 7 in the impact process with each protrusion 11, that is, the side pipe 10 is prevented from being blocked due to the winding of the stirring blade 7.

The lower wall of the preparation tank 1 is fixedly connected with a baffle plate 12, the baffle plate 12 is positioned between a connecting port of the side wall of the lower part of the circulation pipe 2 and the preparation tank 1 and the stirring blade 7, and the baffle plate 12 is used for properly separating the stirring blade 7 from one end of the circulation pipe 2, so that the drilling fluid entering the circulation pipe 2 is the drilling fluid with a certain mixing degree, and is not the primary mixed fluid directly thrown out from the side pipe 10.

The utility model can explain its functional principle by the following modes of operation:

in this application, drilling fluid loads and prepares in jar 1, and preparations such as barite powder load is in feed cylinder 4, and during the concrete use, will start circulating pump 3, and it pumps the drilling fluid around the lower part lateral wall of preparing jar 1 to the upper portion of preparing jar 1, and the preparation in the feed cylinder 4 gets into the upper portion of preparing jar 1 along with the drilling fluid in the period, forms preliminary mixing.

The circulating pump 3 pumps the preparation along with the drilling fluid into the inner barrel 8, performs primary mixing in the inner barrel 8, enters the hollow pipe 9 through the side hole, and is thrown out to all positions of the preparation tank 1 under the action of centrifugal force after entering the side pipe 10, and the stirring blades 7 continuously stir the drilling fluid to realize rapid and uniform mixing of the drilling fluid.

Since the protrusions 11 are provided in this application. The side pipe 10 inevitably collides with each bulge 11 in the rotation process, so that the direction of the side pipe 10 is continuously changed, the thrown preparations such as the barite powder are spread all over the preparation tank 1, and the uniform mixing of drilling fluid is accelerated.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (5)

1. The utility model provides a drilling fluid preparation device, includes prepares jar (1) and circulating pipe (2), its characterized in that, the one end intercommunication of circulating pipe (2) prepares the lower part lateral wall of jar (1), and the other end inwards runs through the upper wall of preparing jar (1), be provided with circulating pump (3) on circulating pipe (2), the upper wall of preparing jar (1) is provided with motor (5), the output shaft fixedly connected with pivot (6) of motor (5), pivot (6) run through downwards in preparing jar (1) and fixedly connected with stirring leaf (7).

2. The drilling fluid preparation device according to claim 1, wherein the part of the circulating pipe (2) above the preparation tank (1) is connected with a feeding cylinder (4), the inner wall of the preparation tank (1) is fixedly connected with an inner cylinder (8), the rotating shaft (6) penetrates through the upper wall and the lower wall of the inner cylinder (8), and the stirring blade (7) is positioned at the lower side of the inner cylinder (8).

3. The drilling fluid preparation device according to claim 2, wherein an empty pipe (9) is arranged in the middle of the rotating shaft (6), the empty pipe (9) is of a hollow structure, a section of the empty pipe (9) positioned inside the inner cylinder (8) is provided with a side hole, the side hole is communicated with the empty pipe (9) and the inner cylinder (8), a side pipe (10) is connected to the side wall of the rotating shaft (6), and the side pipe (10) is communicated with the empty pipe (9).

4. A drilling fluid preparation device according to claim 3, wherein the side pipe (10) is a hose, and the lower wall of the inner cylinder (8) and the side wall of the preparation tank (1) are fixed with protrusions (11) capable of colliding with the side pipe (10) in a rotating state.

5. Drilling fluid preparation device according to claim 1, characterized in that the lower wall of the preparation tank (1) is fixedly connected with a partition plate (12), and the partition plate (12) is positioned between the circulating pipe (2) and the connection port and stirring blade (7) of the lower side wall of the preparation tank (1).