Device for uniformly adding small plastic balls

Abstract

The utility model belongs to the field of petroleum drilling exploration, and discloses a small plastic ball uniform adding device which comprises a container, a valve element mechanism and a hole. An opening is formed in the upper part of the container; the valve element mechanism comprises a fixing rod, a transmission rod and a valve element, the fixing rod is fixedly arranged on the container, the transmission rod is arranged on the fixing rod and is in threaded connection with the fixing rod, and the valve element is arranged on the transmission rod and is fixedly connected with the transmission rod; the hole is formed in the bottom wall of the container, and the position and the size of the hole are matched with those of the valve element; when the transmission rod is rotated, the valve element is relatively close to or away from the hole, and the hole is closed or opened to different degrees. The small plastic ball adding device can uniformly add small plastic balls into a well, improves the utilization rate of the small plastic balls, prevents various poisonous and harmful gases in a tank from hurting the health of constructors standing at a tank opening for a long time, and is suitable for adding the small plastic balls into the well in a well drilling site.

Description

Technical Field

[0001] The utility model belongs to the field of oil drilling exploration, and particularly relates to a device for uniformly adding plastic balls. Background Art

[0002] Plastic balls are a kind of free-flowing non-fluorescent solid lubricant. Using them in exploration wells is beneficial for discovering oil and gas layers. They have an ideal lubricating effect underground, are a lubricant with relatively high cost performance, and have a wide range of applications. Plastic balls are insoluble in water. Entering the wellbore annulus can change the original "surface contact" between the wellbore wall and the drill string into "point contact", and greatly improve the lubricating performance of the mud cake on the wellbore surface by forming a "sliding surface", effectively reducing the friction between the wellbore wall and the drill string, and can significantly reduce drilling problems such as directional "sticking pressure", difficulty in tripping in and out of the well, and jamming of well logging instruments during completion. They are an indispensable lubricating material for highly deviated and long displacement directional wells, horizontal wells, and complex wells.

[0003] The traditional method of adding plastic balls at the drilling site is to directly pour them into the mud tank from the surface of the circulation tank, or use a feeding funnel and directly add them into the well by construction workers through the feeding funnel. The operation process is simple and rough, which easily causes uneven distribution of plastic balls in the drilling fluid, affects the use of plastic balls, causes waste of plastic balls, and makes the plastic balls unable to enter the well evenly and stably. At the same time, due to the long-term squatting of construction workers at the tank mouth, various toxic and harmful gases in the tank are directly inhaled into the body, causing great harm to human health, which violates the health concept of "health first, people-oriented". Summary of the Utility Model

[0004] To solve the above deficiencies in the prior art, the utility model aims to provide a device for uniformly adding plastic balls, which can arbitrarily control the addition amount of plastic balls, avoid the problem of uneven distribution of plastic balls in the drilling fluid, and the problem that construction workers need to squat at the tank mouth for a long time to manually add plastic balls.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows: A device for uniformly adding plastic balls includes a container, a valve core mechanism, and a hole. The upper part of the container has an opening. The valve core mechanism includes a fixed rod, a transmission rod, and a valve core. The fixed rod is fixedly arranged on the container. The transmission rod is arranged on the fixed rod and is threadedly connected to the fixed rod. The valve core is arranged on the transmission rod and is fixedly connected to the transmission rod. The hole is opened on the bottom wall of the container, and the position and size of the hole are both adapted to the valve core; when the transmission rod is rotated, the valve core moves relatively closer to or farther away from the hole, so that the hole is closed or opened to different degrees.

[0006] As a limitation to the utility model: The container is a square hopper.

[0007] As a limitation of the present utility model: the side wall of the hole has an inclined surface, the valve core is a table body protruding towards the hole, and the side wall of the valve core is adapted to the inclined surface of the hole; when the inclined surface of the hole and the side wall of the valve core are in contact, the valve core is closely attached to the hole.

[0008] As a limitation of the present utility model: the plastic small ball uniform adding device further includes a guiding component, the upper end of the guiding component is fixedly arranged on the bottom wall of the container, the guiding component has a hollow structure extending along the direction of the hole, and the size of the hollow structure is larger than the size of the valve core.

[0009] As a limitation of the present utility model: the guiding component is a guiding cylinder.

[0010] As a limitation of the present utility model: the plastic small ball uniform adding device further includes a rotating component, which is arranged at the end of the transmission rod far from the valve core and is fixedly connected with the transmission rod.

[0011] As a limitation of the present utility model: the rotating component is a hand wheel.

[0012] As a limitation of the present utility model: the fixing rod is fixedly arranged along the horizontal direction on the inner wall of the top of the container, and the transmission rod is arranged perpendicular to the fixing rod along the vertical direction.

[0013] As a limitation of the present utility model: a channel for the transmission rod to pass through is opened in the middle of the fixing rod, threads are provided on the side walls of the channel of the fixing rod and the side wall of the transmission rod, and the transmission rod moves relative to the fixing rod along the length direction of the transmission rod through the threads.

[0014] As a limitation of the present utility model: the plastic small ball uniform adding device further includes a bracket for supporting the container.

[0015] Due to the adoption of the above technical solutions, compared with the prior art, the beneficial effects obtained by the present utility model are as follows: realizing the uniform addition of plastic small balls into the well, improving the utilization rate of plastic small balls, and enabling the plastic small balls to enter the well evenly and stably. At the same time, it reduces the downhole complex accidents caused by directional "drag pressure", difficult tripping, and jamming of well completion electric logging instruments, improves the drilling efficiency, shortens the drilling cycle, and achieves the goal of safe, high-quality, and fast drilling. In addition, it also avoids the harm to the physical health of construction workers staying at the tank mouth for a long time caused by various toxic and harmful gases in the tank. Description of the Drawings

[0016] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0018] Figure 2 It is a schematic structural diagram of an embodiment of the present utility model when the hole is closed;

[0019] Figure 3 It is a structural schematic diagram of an embodiment of the utility model when the hole is opened.

[0020] In the figure: 1-container, 2-hole, 3-fixed rod, 4-transmission rod, 5-valve core, 6-guide component, 7-rotating component, 8-bracket. DETAILED DESCRIPTION

[0021] The preferred embodiment of the utility model is described below in conjunction with the accompanying drawings. It should be understood that the plastic pellet uniform addition device described here is a preferred embodiment, which is only used to illustrate and explain the utility model and does not constitute a limitation of the utility model.

[0022] The directional terms or positional relationships such as "up", "down", "left" and "right" described in the present invention are based on the directional relationships in the drawings of the present invention specification and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the content protected by the present invention.

[0023] like Figure 1 As shown, a device for uniformly adding plastic balls comprises a container 1, a hole 2 and a valve core mechanism. The upper part of the container 1 has an opening for holding the plastic balls to be put into the well. Preferably, the container 1 is a square bucket, and its longitudinal section is an isosceles trapezoid with a long upper part and a short lower part, which is conducive to the material flowing downward in the square bucket at a speed that is not too fast, and reduces the possibility of material accumulation on the bottom surface of the square bucket, thereby improving the working efficiency. A hole 2 is provided on the bottom wall of the container 1, so that the plastic balls can pass through it and flow into the well. In addition, the diameter of the hole 2 should not be set too large or too small, which will cause the flow rate of the plastic balls to be correspondingly too large or too small. Preferably, the diameter of the hole 2 is 42 mm, which can make the flow rate of the plastic balls within a suitable range to ensure the lubrication effect between the well wall and the drilling tool. Preferably, the hole 2 is set in the middle of the bottom wall of the container 1, and the shape of the hole 2 can be round or square, or other shapes. In this embodiment, the setting position of the hole 2 on the bottom wall of the container 1 and the shape of the hole 2 are not too limited.

[0024] The valve core mechanism includes a fixed rod 3, a transmission rod 4, and a valve core 5. The fixed rod 3 is fixedly arranged on the container 1. The transmission rod 4 is arranged on the fixed rod 3 and is threadedly connected to the fixed rod 3. To enable the valve core mechanism to be horizontally mounted in the container 1, preferably, the fixed rod 3 is fixedly arranged along the horizontal direction on the inner wall of the top of the container 1, and the transmission rod 4 is arranged vertically perpendicular to the fixed rod 3. Further, a channel for the transmission rod 4 to pass through is also provided in the middle of the fixed rod 3, and the cross-sectional dimension of this channel is adapted to the cross-sectional dimension of the transmission rod 4. In addition, threads are provided on the side walls of both the channel of the fixed rod 3 and the side wall of the transmission rod 4, realizing the threaded connection between the fixed rod 3 and the transmission rod 4. When the transmission rod 4 rotates, due to the cooperation of the threads, the transmission rod 4 will move relative to the fixed rod 3 along the length direction of the transmission rod 4 through the threads. The valve core 5 is arranged on the transmission rod 4 and is fixedly connected to the transmission rod 4. Preferably, for the convenience of installation, the valve core 5 is arranged at the lower end of the transmission rod 4, and the transmission rod 4 can drive the valve core 5 to move.

[0025] During the process of the valve core 5 being driven by the transmission rod 4 to move, the valve core 5 will approach or move away from the hole 2. To enable the valve core 5 to completely block the hole 2 at the bottom of the container 1, it is necessary to ensure that the positions and dimensions of the valve core 5 and the hole 2 are both adapted. Further, the side wall of the hole 2 has an inclined surface, and the valve core 5 is a table body protruding towards the hole 2, and the side wall of the valve core 5 is adapted to the inclined surface of the hole 2.

[0026] In a possible case, the longitudinal section of the hole 2 is a polygon, the bottom side length of which is greater than the top side length, and the valve core 5 is a frustum of a cone with the bottom diameter greater than the top diameter, and the bottom diameter of the valve core 5 is greater than or equal to the bottom side length of the hole 2. Therefore, when the valve core 5 moves upward from below the hole 2 and approaches the hole 2, the side wall of the valve core 5 can closely fit with the side wall of the hole 2 having an inclined surface, and the upper surface of the valve core 5 will abut against the lower surface of the hole 2, making the bottom of the container 1 a closed structure, ensuring that the plastic balls in the container 1 will not leak through the gap between the hole 2 and the valve core 5, which is beneficial to the sealing performance of the device.

[0027] In another possible case, the longitudinal section of the hole 2 is still a polygon, the bottom side length of which is less than the top side length, and the valve core 5 is a frustum of a cone with the bottom diameter less than the top diameter, and the top diameter of the valve core 5 is greater than or equal to the top side length of the hole 2. Therefore, when the valve core 5 moves downward from above the hole 2 and approaches the hole 2, the side wall of the valve core 5 can closely fit with the side wall of the hole 2 having an inclined surface, and the lower surface of the valve core 5 will abut against the upper surface of the hole 2, making the bottom of the container 1 a closed structure, ensuring that the plastic balls in the container 1 will not leak through the gap between the hole 2 and the valve core 5, which is beneficial to the sealing performance of the device.

[0028] Therefore, through the above-described setting method, when the transmission rod 4 is rotated, the valve core 5 can move relatively closer to or farther away from the hole 2 from above or below the hole 2. When the valve core 5 approaches and abuts against the hole 2 from above or below, since the inclined surface of the hole 2 contacts the side wall of the valve core 5, the valve core 5 can be closely attached to the hole 2, and a tightly fitting structure is formed between the hole 2 and the valve core 5, achieving the closing of the hole 2 and making the bottom of the container 1 a closed structure. When the hole 2 is in an unclosed state, there is an adjustable gap between the hole 2 and the valve core 5. Therefore, by rotating the transmission rod 4, the hole 2 can be opened to different degrees.

[0029] Furthermore, the plastic ball uniform addition device further includes a guiding member 6. The upper end of the guiding member 6 is fixedly arranged on the bottom wall of the container 1. To guide the plastic balls to fall into the well from the container 1 through the hole 2, the guiding member 6 is a hollow structure, and the diameter of its internal space should be larger than the aperture of the hole 2, so that the opening at the upper part of the guiding member 6 can surround the opening of the hole 2 on the outer wall of the bottom of the container 1. At the same time, the length direction of the guiding member 6 extends along the direction from the opening of the hole 2 in the container 1 towards the ground. Thus, a falling channel with a certain length can be provided for the plastic balls, which is beneficial to guiding the plastic balls to flow entirely from the hole 2 into the well, avoiding the plastic balls directly flowing out from the hole 2 and scattering to other places outside the wellhead, causing unnecessary waste. In addition, the size of the hollow structure is larger than the size of the valve core 5, so that the valve core 5 will not be stuck by the guiding member 6 due to its up and down movement.

[0030] Furthermore, the guiding member 6 is a guiding cylinder, and the guiding cylinder is a hollow cylinder. The plastic balls can fall at a uniform speed in its internal space, making the plastic ball flow rate the same at each cross-section of the guiding cylinder, which helps the plastic balls to smoothly pass through the guiding cylinder and flow into the wellhead. In addition, the guiding member 6 can also be a straight prism with a hollow structure. This embodiment does not make too many limitations on this, as long as it is ensured that the plastic balls fall at a uniform speed in the internal space of the guiding member 6.

[0031] Furthermore, in order to facilitate the operation of the transmission rod 4, a rotating member 7 is further arranged at the end of the transmission rod 4 far from the valve core 5 and is fixedly connected to the transmission rod 4. Preferably, the rotating member 7 is arranged at the top end of the transmission rod 4. When the rotating member 7 is rotated, the transmission rod 4 can be driven to rotate. Through the interaction between the threads on the side wall of the transmission rod 4 and the threads on the side wall of the middle channel of the fixed rod 3, the transmission rod 4 can move up and down relative to the fixed rod 3 along its length direction, thereby driving the valve core 5 installed on the transmission rod 4 to move up and down, and finally realizing the closing of the hole 2 or making the hole 2 have different degrees of opening. Preferably, for the convenience of rotation, the rotating member 7 is a handwheel. For the specific structure of the rotating member 7, this embodiment does not make too many limitations on this, as long as it can indirectly control the rotation of the transmission rod 4.

[0032] Furthermore, the plastic ball uniform addition device further includes a bracket 8, which can be made of metal or wood materials and is used to support the container 1, stably mounting the container 1 on the wellhead. Regarding the material of the bracket 8, this embodiment does not limit it too much, as long as it can stably support the container 1.

[0033] When specifically using the plastic ball uniform addition device, there will be situations where the valve core 5 moves upward from below the hole 2 to close the hole 2, and the valve core 5 moves downward from above the hole 2 to close the hole 2.

[0034] As Figure 2 shown, when the valve core 5 is located below the hole 2, rotate the handwheel counterclockwise, and the transmission rod 4 drives the valve core 5 to move upward. At this time, the side wall of the valve core 5 contacts the side wall of the hole 2, making the hole 2 and the valve core 5 fit tightly, realizing the closure of the bottom of the container 1. The construction personnel can put the plastic balls to be put into the well into the container 1. As Figure 3 shown, to make the plastic balls flow out of the hole 2, rotate the handwheel clockwise, and the transmission rod 4 drives the valve core 5 to move downward. At this time, the valve core 5 leaves the hole 2, realizing the opening of the bottom of the container 1 and making the plastic balls flow out of the container 1.

[0035] In addition, the valve core 5 can also be located above the hole 2. Rotate the handwheel clockwise, and the transmission rod 4 drives the valve core 5 to move downward. At this time, the side wall of the valve core 5 contacts the side wall of the hole 2, making the hole 2 and the valve core 5 fit tightly, realizing the closure of the bottom of the container 1; to make the plastic balls flow out of the hole 2, rotate the handwheel counterclockwise, and the transmission rod 4 drives the valve core 5 to move upward. At this time, the valve core 5 leaves the hole 2, realizing the opening of the bottom of the container 1 and making the plastic balls flow out of the container 1.

[0036] It should be supplemented here that the handwheel can also be rotated counterclockwise to make the transmission rod 4 move downward; correspondingly, when the handwheel is rotated clockwise, the transmission rod 4 will move upward. And the opening and closing method of the hole 2 is the same as described above, and will not be repeated here.

[0037] During the process of gradually opening the hole 2 at the bottom of the container 1, the construction personnel observe the discharging speed of the guide cylinder. When the discharging speed is considered to reach the ideal value, stop rotating the handwheel. At this time, the valve core 5 no longer moves downward or upward, and the gap between the hole 2 and the valve core 5 no longer changes. Therefore, the flow rate of the plastic balls flowing out of the container 1 through the hole 2 is constant. When the construction personnel think that the discharging speed needs to be changed, the transmission rod 4 can be rotated again to change the gap between the hole 2 and the valve core 5, thereby adjusting the outflow volume of the plastic balls to meet the actual addition needs.

[0038] In order to more conveniently and clearly adjust the outflow rate of plastic balls quantitatively, a plurality of scale marks can also be equidistantly arranged at the upper part of the transmission rod 4. The scale marks can be pre-drawn scale lines or other obvious marks, and this embodiment does not make excessive limitations in this regard. Construction workers can pre-determine the change amount of the clearance value between the adjacent scale marks corresponding to the hole 2 and the valve core 5 respectively. When the transmission rod 4 moves upward or downward by one adjacent scale mark, the construction workers can determine the change amount of the clearance value, and then easily infer the clearance value between the hole 2 and the valve core 5 to judge whether the current outflow rate of the plastic balls meets the expected standard. Therefore, by observing the change of the scale marks, quantitative control of the outflow rate of the plastic balls can be achieved.

[0039] Through the above operation method, the amount of plastic balls added into the well can be arbitrarily controlled, and the purpose of adding plastic balls at a uniform speed is achieved. After that, the construction workers can leave the wellhead without always observing the outflow situation of the plastic balls, avoiding directly inhaling various toxic and harmful gases in the well into the body, which causes great harm to human health, and realizing the health concept of "health first, people-oriented". The device has the characteristics of scientific design, simple structure and low cost.

Claims

1. A device for uniformly adding plastic small balls, characterized in that including Container (1): The upper part of the container (1) has an opening; Valve core mechanism: The valve core mechanism includes a fixed rod (3), a transmission rod (4), and a valve core (5). The fixed rod (3) is fixedly arranged on the container (1), the transmission rod (4) is arranged on the fixed rod (3) and is threadedly connected to the fixed rod (3), and the valve core (5) is arranged on the transmission rod (4) and is fixedly connected to the transmission rod (4); Hole (2): The hole (2) is opened on the bottom wall of the container (1), and the position and size of the hole (2) are both adapted to the valve core (5); When the transmission rod (4) is rotated, the valve core (5) moves relatively closer to or farther away from the hole (2), so that the hole (2) is closed or opened to different degrees.

2. The plastic small ball uniform addition device according to claim 1, wherein The container (1) is a square hopper.

3. The plastic small ball uniform addition device according to claim 1, characterized in that The side wall of the hole (2) has an inclined surface, the valve core (5) is a table body protruding towards the hole (2), and the side wall of the valve core (5) is adapted to the inclined surface of the hole (2); when the inclined surface of the hole (2) contacts the side wall of the valve core (5), the valve core (5) fits tightly against the hole (2).

4. The plastic small ball uniform addition device according to any one of claims 1 to 3, characterized in that, It further includes a guiding member (6). The upper end of the guiding member (6) is fixedly arranged on the bottom wall of the container (1). The guiding member (6) has a hollow structure extending along the direction of the hole (2), and the size of the hollow structure is larger than the size of the valve core (5).

5. The plastic small ball uniform addition device according to claim 4, wherein, The guiding member (6) is a guiding cylinder.

6. The plastic small ball uniform addition device according to any one of claims 1 to 3 and 5, characterized in that It further includes a rotating member (7), which is arranged at one end of the transmission rod (4) far from the valve core (5) and is fixedly connected to the transmission rod (4).

7. The plastic small ball uniform addition device according to claim 6, characterized in that, The rotating member (7) is a handwheel.

8. The plastic small ball uniform addition device according to claim 1, characterized in that, The fixed rod (3) is fixedly arranged horizontally on the inner wall of the top of the container (1), and the transmission rod (4) is arranged vertically perpendicular to the fixed rod (3).

9. The plastic small ball uniform addition device according to claim 8, characterized in that, A channel for the transmission rod (4) to pass through is opened in the middle of the fixed rod (3). Threads are provided on the side walls of the channel of the fixed rod (3) and the side wall of the transmission rod (4). The transmission rod (4) moves relative to the fixed rod (3) along the length direction of the transmission rod (4) through the threads.

10. The plastic small ball uniform addition device according to any one of claims 1 to 3, 5, 7 to 9, characterized in that It further includes a bracket (8) for supporting the container (1).

Images