Solid feeding device and method for well drilling

Abstract

The invention belongs to the technical field of oil and gas drilling, and particularly relates to a solid feeding device and method for drilling. The solid feeding device for well drilling comprises a storage bin, a feeding hopper and a discharging hopper, wherein a discharging opening is formed in the lower portion of the storage bin; a discharging rotating plate is rotationally arranged on the lower portion of the storage bin, a plurality of discharging holes of different sizes are formed in the discharging rotating plate at intervals in the circumferential direction, the discharging rotating plate is rotated, the different discharging holes can be aligned with the discharging port, and therefore the discharging speed is adjusted.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil and gas drilling, and in particular, relates to a solid feeding device for drilling and a solid feeding method for drilling. Background Art

[0002] During the directional drilling of directional wells and horizontal wells, the "support pressure" phenomenon caused by the large friction between the drill string and the well wall is very prominent, resulting in the inability to effectively transmit the drilling pressure and low rock breaking efficiency of the drill bit.

[0003] Currently, a common way to solve the above problem is to add solid lubricant plastic balls to the drilling fluid, which can solve the "support pressure" problem.

[0004] Among them, plastic balls are a new type of efficient solid lubricant, which is a spherical particle composed of polymer, lubricant and stabilizer and is insoluble in water. Adding plastic balls to the drilling fluid can change the surface contact between the drill string and the well wall into point contact, greatly reducing the contact area between the two, thereby effectively reducing the friction resistance of the drill string during sliding drilling, improving the drilling pressure transmission efficiency, and achieving efficient rock breaking.

[0005] At present, drilling sites mostly use a homemade simple funnel to manually add plastic pellets. This method requires special personnel to supervise, has poor filling control accuracy and low efficiency, and wastes human resources.

[0006] Chinese patent document CN116212734A discloses a solid reagent feeding device, in which a screen with a vibrator is provided in a feeding box. The device only prevents the accumulation of solid reagents and cannot obtain the remaining amount of materials in the feeding bin.

[0007] Chinese patent document CN116214727A discloses a concrete water reducing agent feeding device, which is designed with a rodless cylinder to drive a sliding block to wipe off the water reducing agent to prevent the residual water reducing agent from being damp and deteriorating and contaminating the water reducing agent tank. The device cannot control the rate of water reducing agent filling.

[0008] Chinese patent document CN116216902A discloses a quantitative addition device for a neutralizer for sewage treatment, which is provided with a metering device. After determining the amount of additive required, the feeding device is started, and the feeding device discharges the corresponding neutralizer into the metering device. After weighing, the metering device discharges the neutralizer through a discharge hole. The device is inconvenient to move and is limited by the workplace.

[0009] When solid lubricant plastic balls need to be added during the oil drilling process, in addition to ensuring that the equipment can be stably filled, the filling rate of the plastic balls needs to be changed according to changes in working conditions. At the same time, due to the special characteristics of the drilling site, the device needs to be movable.

[0010] Therefore, there is an urgent need to develop a feeding device that can accurately control the filling rate of solid lubricant plastic pellets, can control different filling rates, and weigh the remaining amount of material in the device in real time to facilitate the addition of materials. At the same time, the device is movable, convenient and flexible. Summary of the invention

[0011] In view of the above-mentioned technical problems, the present invention aims to provide a solid feeding device for drilling, which can inject solid materials into the well and control different injection rates.

[0012] The present invention also provides a method for adding solid materials for drilling, which uses the device for adding solid materials for drilling provided by the present invention.

[0013] According to the present invention, there is provided a solid feeding device for drilling, comprising:

[0014] A material storage bin, wherein a discharge port is provided at the lower portion of the material storage bin;

[0015] A discharging turn plate is rotatably arranged at the lower part of the storage bin, and a plurality of discharging holes of different sizes are arranged at intervals along the circumferential direction on the discharging turn plate. By rotating the discharging turn plate, different discharging holes can be aligned with the discharging port, thereby adjusting the discharging speed.

[0016] According to the present invention, in a specific embodiment, a driver is fixedly arranged outside the storage bin, the output end of the driver is connected to the discharge turntable, and the driver can drive the discharge turntable to rotate.

[0017] According to the present invention, in a specific embodiment, a controller is provided on the storage bin, and the controller is electrically connected to the driver.

[0018] According to the present invention, in a specific embodiment, a weighing mechanism is provided in the storage bin, and the weighing mechanism is configured to weigh the material in the storage bin.

[0019] According to the present invention, in a specific embodiment, a controller is provided on the storage bin, and the controller is electrically connected to the weighing mechanism.

[0020] According to the present invention, in a specific embodiment, the weighing mechanism includes a material receiving plate arranged in the material storage bin, and a weight sensor arranged below the material receiving plate, and the weight sensor is fixedly connected to the material storage bin.

[0021] According to the present invention, in a specific embodiment, a vertical feeding hole is arranged on the material receiving plate, and the material receiving plate is arranged as an inclined surface so that the material on the material receiving plate can move to the feeding hole under the action of gravity, and the feeding hole is located above the discharge port of the storage bin, and a baffle is arranged on the side wall of the feeding hole of the material receiving plate, and the lower end of the baffle is in contact with the lower end surface of the storage bin, and the baffle is made of flexible material.

[0022] According to the present invention, in a specific embodiment, a feeding hopper is arranged on the upper part of the storage bin, and a screen is arranged in the feeding hopper.

[0023] According to the present invention, in a specific embodiment, wheels and a braking mechanism for braking the wheels are arranged at the lower part of the storage bin.

[0024] According to the present invention, a method for adding solid material for drilling is also provided, wherein the solid lubricant is added using the solid material adding device for drilling provided by the present invention.

[0025] Compared with the prior art, the advantages of the present application are as follows.

[0026] The discharging turntable of the present invention is rotatably arranged at the lower part of the storage bin. Since discharging holes of different diameters are arranged on the discharging turntable, different discharging holes are aligned with the discharging port of the storage bin, thereby achieving the effect of adjusting the discharging rate.

[0027] The present invention is provided with a driver, and through different gear settings in the controller, the driver drives the discharging rotating plate to rotate, so as to realize the switching of the discharging holes, and the rate of adding the solid lubricant can be adjusted at any time according to the needs.

[0028] The present invention is provided with a weighing mechanism, which can weigh the weight of the solid lubricant in the storage bin in real time and display it on the display screen of the controller in real time, so that the operator can grasp the remaining amount of the solid lubricant at any time and add the solid lubricant in time.

[0029] The present invention provides a screen in the feeding hopper, and the screen can prevent packaging bags and other debris from falling into the device and blocking the discharge hole.

[0030] The invention is provided with wheels, has the characteristic of being movable, and has flexible working location. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be described below with reference to the accompanying drawings.

[0032] Figure 1 A schematic diagram showing an embodiment of a solid feeding device for drilling according to the present invention;

[0033] Figure 2A schematic diagram showing an embodiment of a discharge rotary plate according to the present invention is shown.

[0034] In the figure:

[0035] 1. Feeding hopper;

[0036] 2. Screen;

[0037] 3. Storage silo; 31. Discharge port;

[0038] 40. Weighing mechanism; 4. Material receiving plate; 41. Material discharge hole;

[0039] 5. Weight sensor;

[0040] 6. Wheels;

[0041] 7. Controller;

[0042] 8. Baffle;

[0043] 9. Driver;

[0044] 10. Chain;

[0045] 11. Discharging transfer plate; 42. Blocking position;

[0046] 12. Brake pads;

[0047] 13. Bearings;

[0048] 14. Discharge hole;

[0049] 100. Solid feeding device for drilling.

[0050] In the present application, all drawings are schematic drawings, which are only used to illustrate the principles of the present invention and are not drawn according to the actual scale. DETAILED DESCRIPTION

[0051] The present invention will be described below with reference to the accompanying drawings.

[0052] It should be noted that the directional terms or qualifiers "upper", "lower", "front", "back", "left", "right", etc. used in this application are all relative to the referenced Figure 1 They are not intended to define the absolute positions of the components involved, but may vary depending on the specific circumstances.

[0053] Figure 1 The structure of the solid feeding device 100 for drilling according to the present invention is shown. Figure 1 As shown, the solid feeding device 100 for drilling includes a storage bin 3 and a discharging rotary plate 11 rotatably arranged at the lower part of the storage bin 3 .

[0054] Specifically, in this embodiment, the storage bin 3 is configured as a hollow box structure, which can be configured to be cylindrical, square or other shapes. The storage bin 3 is used to store solid lubricants (plastic balls). Without affecting the function of the storage bin 3 to store fixed lubricants, technicians in this field can set the storage bin 3 to any shape according to actual conditions.

[0055] like Figure 1 As shown, in this embodiment, a discharge port 31 is provided at the lower part of the storage bin 3. During the working process, the staff stores the solid lubricant in the storage bin 3, and the solid lubricant in the storage bin 3 can move downward to the outside of the storage bin 3 through the discharge port 31 at a certain speed under the action of gravity, thereby realizing the filling of the solid lubricant.

[0056] According to the present invention, the discharging rotating plate 11 is rotatably arranged at the lower part of the discharging rotating plate 11. The shape of the discharging rotating plate 11 can be set to any shape such as square, circle, polygon, etc., as long as the discharging rotating plate 11 can cover the discharging port 31.

[0057] Specifically, Figure 2 As shown, the discharging turntable 11 in this embodiment is set to be circular, and a bearing 13 is set at the central axis of the discharging turntable 11. The discharging turntable 11 is rotatably connected to the lower part of the storage bin 3 through the bearing 13. A plurality of discharging holes 14 are arranged at intervals along the circumferential direction on the discharging turntable 11, and these discharging holes 14 have different sizes. In this embodiment, a plurality of discharging holes 14 are distributed on the discharging turntable 11 in the order from small to large along the circumferential direction, and a blocking position 42 is also reserved on the discharging turntable 11, that is, the discharging hole 14 is not set at the blocking position 42 of the discharging turntable 11, and when the blocking position 42 of the discharging turntable 11 rotates to coincide with the discharging port 31, the discharging port 31 can be blocked.

[0058] In this embodiment, the discharge holes 14 are arranged in a circular shape, and the central axes of these discharge holes 14 are at the same distance from the central axis of the discharge turntable 11, and the central axes of these discharge holes 14 are at the same distance from the central axis of the discharge turntable 11 as the distance from the central axis of the discharge port 31 to the central axis of the discharge turntable 11. By rotating the discharge turntable 11, different discharge holes 14 can be aligned with the discharge port 31, and the blocking position 42 of the discharge turntable 11 can also be aligned with the discharge port 31.

[0059] During operation, the solid lubricant in the storage bin 3 can be moved to the outside of the storage bin 3 through the discharge port 31 and the discharge hole 14 in sequence, thereby realizing the filling of the solid lubricant. When the filling rate of the solid lubricant needs to be adjusted, the discharge rotating plate 11 is rotated to align the discharge holes 14 of different sizes with the discharge port 31, thereby adjusting the filling rate of the solid lubricant.

[0060] In a preferred embodiment, Figure 1 As shown, a driver 9 is fixedly arranged on the right side of the storage bin 3, and the output end of the driver 9 is connected to the discharge turn plate 11, and the driver 9 can drive the discharge turn plate 11 to rotate. When the filling rate of the solid lubricant needs to be adjusted, the driver 9 is controlled to drive the discharge turn plate 11 to rotate, and the rotation of the discharge turn plate 11 can be accurately controlled, thereby accurately controlling the discharge hole 14 of a certain size to align with the discharge port 31.

[0061] In a specific embodiment, the driver 9 is configured as a motor, which is fixedly arranged on the right side of the storage bin 3, with the central axis of the motor arranged in the vertical direction, and a transmission mechanism is arranged at the output end of the lower end of the motor, and the transmission mechanism is connected to the discharge rotating plate 11. After the motor is started, the motor can drive the discharge rotating plate 11 to rotate through the transmission mechanism, so that the discharge holes 14 of different sizes are aligned with the discharge port 31.

[0062] Furthermore, the transmission mechanism includes a chain 10, and sprockets are correspondingly arranged on the output end of the driver 9 and the discharge turntable 11, and the chain 10 connects the driver 9 with the discharge turntable 11 through the sprocket. In this embodiment, a sprocket is coaxially fixedly arranged on the output shaft of the driver 9, and another sprocket is coaxially sleeved on the outer side of the discharge turntable 11, and the two sprockets are connected by the chain 10.

[0063] Furthermore, a controller 7 is provided on the upper part of the storage bin 3, and the controller 7 is electrically connected to the driver 9. Corresponding parameters are input into the controller 7, and the controller 7 can send corresponding electrical signals to the driver 9, and the driver 9 can drive the discharge rotating plate 11 to rotate a corresponding angle after receiving the electrical signals, thereby realizing accurate switching of discharge holes 14 of different sizes.

[0064] According to the present invention, in a specific embodiment, a weighing mechanism 40 is provided in the storage bin 3. The weighing mechanism 40 is located at the lower inner side of the storage bin 3 and is configured to measure the weight of the solid lubricant in the storage bin 3. A controller 7 is provided at the upper part of the storage bin 3, and the controller 7 is electrically connected to the weighing mechanism 40. The weighing mechanism 40 weighs the solid lubricant in the storage bin 3 in real time and displays the weighing structure on the display screen of the controller 7 in real time. Under this setting, the operator can grasp the remaining amount of the solid lubricant in the storage bin 3 at any time and add the solid lubricant to the storage bin 3 in time.

[0065] like Figure 1As shown, in this embodiment, the weighing mechanism 40 includes a material receiving plate 4 and a weight sensor 5. The lower end of the weight sensor 5 is fixedly connected to the lower inner wall of the storage bin 3, and the material receiving plate 4 is arranged at the upper end of the weight sensor 5. When there is material in the storage bin 3, the weight of the material can be transmitted to the weight sensor 5 through the material receiving plate 4. The weight sensor 5 is electrically connected to the controller 7, so that the weight sensor 5 can transmit the weight signal of the material to the controller 7, and then the controller 7 displays text or images, so that the staff can understand the remaining amount of material in the storage bin 3 in real time.

[0066] Specifically, the shape of the material receiving plate 4 is adapted to the shape of the inner wall cross section of the storage bin 3, and the material receiving plate 4 can move in the vertical direction in the storage bin 3. A vertical discharge hole 41 is provided in the middle of the material receiving plate 4, and the discharge hole 41 corresponds to the position of the discharge port 31 of the storage bin 3, that is, the discharge hole 41 is located directly above the storage bin 3. In a preferred embodiment, the material receiving plate 4 is configured to be conical, and the discharge hole 41 of the material receiving plate 4 is at the lowest position, and the edge of the material receiving plate 4 is at the highest position. Through this configuration, the solid lubricant on the material receiving plate 4 can be discharged from the discharge hole 41 along the inclined surface of the material receiving plate 4 under the action of gravity.

[0067] In order not to interfere with the material discharge hole 41 , in this embodiment, a plurality of weight sensors 5 are evenly arranged below the material receiving plate 4 along the circumferential direction, thereby avoiding the position of the material discharge hole 41 .

[0068] In a preferred embodiment, a baffle 8 is provided on the side wall of the feed hole 41 of the weighing mechanism 40, the lower end of the baffle 8 contacts the lower end surface of the storage bin 3, and the baffle 8 is made of a flexible material. Specifically, the baffle 8 is made of a rubber material, and the baffle 8 is set to a cylindrical structure consistent with the shape of the feed hole 41 and the discharge port 31. The upper end of the baffle 8 is fixedly connected to the material receiving plate 4 and coaxially fixedly connected to the feed hole 41. The lower end of the baffle 8 is fixedly connected to the lower inner wall of the storage bin 3 and coaxially fixedly connected to the discharge port 31. Through this arrangement, the baffle 8 separates the space between the lower part of the weighing mechanism 40 and the lower wall of the storage bin 3 from the vertical space where the discharge port 31 is located, thereby preventing the solid lubricant in the storage bin 3 from moving to the dead corner of the lower part of the material receiving plate 4.

[0069] When the material is not added to the storage bin 3, the controller 7 selects the position of the discharge rotating plate 11 without a discharge hole, that is, the blocking position 42 of the discharge rotating plate 11 to block the discharge port 31. At this time, a large amount of solid lubricant is poured from the feeding hopper 1 and accumulated on the material receiving plate 4. The weight on the material receiving plate 4 is evenly distributed on each weight sensor 5, and the weight of the material is displayed on the screen of the controller 7. When solid lubricant needs to be added, after selecting a suitable discharge hole 14, due to the inclination angle of the material receiving plate 4, the material continues to fall into the discharge port 31 under the action of gravity. At this time, the weight sensor 5 is still working, and the weight of the material in the storage bin 3 is displayed on the screen of the controller 7 in real time.

[0070] According to the present invention, in a specific embodiment, a hopper 1 is provided on the upper part of the storage bin 3. The hopper 1 is configured as a cone with a large upper size and a small lower size, and is fixedly provided at the upper end of the storage bin 3. A screen 2 is provided in the hopper 1, and the screen 2 can prevent other large-volume impurities from entering the storage bin 3 and blocking the discharge hole 14.

[0071] According to the present invention, in a preferred embodiment, wheels 6 and a braking mechanism for braking the wheels 6 are provided at the lower part of the storage bin 3. Under this arrangement, the present invention can be pushed to move, and the working place is more flexible.

[0072] In a specific embodiment, the braking mechanism includes a brake pad 12 , and the brake pad 12 can brake the wheel 6 by friction.

[0073] In one embodiment of the present invention, a method for adding solid material for drilling is provided, wherein a solid lubricant is added using a solid material adding device 100 for drilling provided by the present invention.

[0074] The specific method of adding solid materials for drilling includes the following steps:

[0075] According to the construction requirements and actual conditions of the workplace, the solid feeding device 100 for drilling is moved to an appropriate position, and the brake mechanism is started to fix the wheel 6 so that the solid feeding device 100 for drilling can be fixed at a predetermined position, so that work can be carried out smoothly.

[0076] Turn on the controller 7, select a suitable feeding rate gear, the controller 7 transmits the command to the driver 9, the driver 9 rotates to drive the transmission mechanism 10, and the transmission mechanism 10 then rotates the discharge turn plate 11 to a specific angle and uses the designated discharge hole 14 to work.

[0077] Solid lubricant (plastic pellets) is poured into the hopper 1, and the solid lubricant enters the storage bin 3 through the hopper 1 and the screen 2. In this process, the screen 2 can prevent other debris such as packaging bags from falling into the solid feeding device 100 for drilling and blocking the discharge hole 14.

[0078] The solid lubricant (plastic pellets) falls and accumulates on the weighing mechanism 40 in the storage bin 3. The weight of the solid lubricant is displayed in real time on the screen of the controller 7. The operator can know the remaining amount of solid lubricant in the storage bin at any time so as to add solid lubricant in time.

[0079] The baffle plate 8 blocks the solid lubricant from entering the dead corner at the bottom of the weighing mechanism 40 , ensuring that the balls fall onto the discharging rotating plate 11 smoothly.

[0080] The solid lubricant accumulated in the storage bin 3 falls onto the discharge rotating plate 11 due to gravity, and enters the drilling fluid through the discharge hole 14. During this period, different gears can be switched on the controller 7 as needed. The controller 7 sends instructions to the driver 9, and the driver 9 drives the transmission mechanism 10 to switch the discharge holes 14 of different diameters through the rotation of the discharge rotating plate 11 to control the feeding rate.

[0081] After the feeding is completed, the gear can be switched once, so that the discharge hole 14 on the discharge rotating plate 11 with the same diameter as the discharge port 31 is aligned with the discharge port 31, and the residual small balls on the discharge rotating plate 11 are pushed into the discharge hole 14.

[0082] The controller 7 is turned off, the brake mechanism is lifted, and the drilling solid feeder 100 is moved to a suitable location for storage.

[0083] In the description of the present invention, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0084] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" 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 present invention. In this specification, the schematic representation of the above terms does 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.

[0086] Finally, it should be noted that the above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A solid feeding device for drilling, characterized in that: include: A material storage bin (3), wherein a material discharge port (31) is provided at the lower portion of the material storage bin (3); A discharging rotating plate (11) is rotatably arranged at the lower part of the storage bin (3), and a plurality of discharging holes (14) of different sizes are arranged at intervals along the circumferential direction on the discharging rotating plate (11). By rotating the discharging rotating plate (11), different discharging holes (14) can be aligned with the discharging port (31), thereby adjusting the discharging speed.

2. The solid feeding device for drilling according to claim 1, characterized in that: A driver (9) is fixedly arranged outside the storage bin (3), and an output end of the driver (9) is connected to a discharge rotating plate (11), and the driver (9) can drive the discharge rotating plate (11) to rotate.

3. The solid feeding device for drilling according to claim 2, characterized in that: A controller (7) is provided on the material storage bin (3), and the controller (7) is electrically connected to the driver (9).

4. The solid feeding device for drilling according to claim 1, characterized in that: A weighing mechanism (40) is arranged in the material storage bin (3), and the weighing mechanism (40) is configured to be able to weigh the material in the material storage bin (3).

5. The solid feeding device for drilling according to claim 4, characterized in that: A controller (7) is provided on the material storage bin (3), and the controller (7) is electrically connected to the weighing mechanism (40).

6. The solid feeding device for drilling according to claim 4, characterized in that: The weighing mechanism (40) comprises a material receiving plate (4) arranged in the material storage bin (3), and a weight sensor (5) arranged below the material receiving plate (4); the weight sensor (5) is fixedly connected to the material storage bin (3).

7. The solid feeding device for drilling according to claim 6, characterized in that: A vertical material discharge hole (41) is provided on the material receiving plate (4), and the material receiving plate (4) is arranged as an inclined surface so that the material on the material receiving plate (4) can move to the material discharge hole (41) under the action of gravity, and the material discharge hole (41) is located above the discharge port (31) of the storage bin (3). A baffle (8) is provided on the side wall of the material discharge hole (41) of the material receiving plate (4), and the lower end of the baffle (8) contacts the lower end surface of the storage bin (3), and the baffle (8) is made of a flexible material.

8. The solid feeding device for drilling according to claim 1, characterized in that: A feeding hopper (1) is arranged on the upper part of the storage bin (3), and a screen (2) is arranged inside the feeding hopper (1).

9. The solid feeder for drilling according to any one of claims 1 to 8, characterized in that: A wheel (6) and a braking mechanism for braking the wheel (6) are arranged at the lower part of the storage bin (3).

10. A method for adding solid materials to a well, characterized in that: The solid lubricant is added using the solid feeding device for drilling according to any one of claims 1 to 9.

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