Particle material injection device

Abstract

The utility model relates to a method for determining fracturing crack parameters in a well through radioactive ceramsite tracers, in particular to a particle material injection device, particle materials are kept in a container with an opening, and the particle material injection device comprises a keeping part, an overturning part and a particle separation part. The holding part is used for holding the container; the overturning part is used for driving the retaining part to overturn so as to drive the container to overturn until an included angle is formed between the plane where the opening is located and the horizontal plane, so that the particle materials in the container can roll to the opening and fall through the opening; the particle separation part is configured to receive the particle material from the opening and quantitatively separate the particle material. According to the material injection device disclosed by the embodiment of the invention, the overturning part is arranged and can drive the retaining part to overturn, so that the material particles can be dispersed and rolled; and quantitative separation of the particle materials is achieved by arranging the particle separation part, and uniform injection of the particle materials is facilitated.

Description

Technical Field

[0001] The present application relates to determining the parameters of hydraulic fractures in a well by using radioactive ceramsite tracers, and more specifically to a device for injecting granular materials. Background Art

[0002] This section of content merely provides background information related to the present application and does not necessarily constitute prior art.

[0003] Oilfield fracturing crack radioactive tracer monitoring technology is a commonly used near-wellbore fracture monitoring technology that can be used to obtain relevant data on oilfield fracturing.

[0004] In the application process of this technology, the radioactive ceramic balls used as tracers and the proppant for fracturing need to be mixed relatively evenly, and then the sand-carrying fluid is injected into the underground fractures through a high-pressure pump. The commonly used method is wet injection, that is, using guar gum with a certain viscosity as a carrier, first mixing the tracer and guar gum evenly, and then mixing the guar gum mixed with the tracer with the proppant and the sand-carrying fluid in a sand mixing tank, and then injecting it into the underground fractures by a high-pressure pump.

[0005] Since the wet injection method requires guar gum as a carrier, it has high requirements for the viscosity of guar gum. The guar gum used as a carrier must be able to suspend the mixed tracer in the guar gum, and cannot float on the surface of the guar gum or sink to the bottom of the guar gum. In addition, due to the viscosity of guar gum, during the mixing of guar gum and tracer, the container used for mixing the two and the tools used for stirring will have residual guar gum and tracer, causing radioactive contamination. Therefore, radioactive contaminated waste will be generated during each injection process of the wet method, and the treatment of radioactive waste will cause great economic losses. Utility Model Content

[0006] A brief overview of the present application is provided below in order to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify the key or important parts of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0007] In view of the above technical problems, the utility model provides a filling device for particulate material, wherein the particulate material is held in a container having an opening, and the filling device may include: a holding portion, used to hold the container; a flipping portion, used to drive the holding portion to flip, so as to drive the container to flip so that an angle exists between the plane where the opening is located and a horizontal plane, so that the particulate material in the container can roll to the opening and fall through the opening; and a particle separation portion, configured to receive the particulate material from the opening and quantitatively separate the particulate material.

[0008] Furthermore, the particle separation part may include: a rotating part, which is rotatably arranged below the flipping part, and the rotating part is provided with a plurality of grooves along its circumference, and the grooves are used to receive the particulate material from the opening, and the particulate material falls from the grooves as the grooves roll with the rotating part; and a driving part, which is used to drive the rotating part to rotate.

[0009] Furthermore, the particle separation part may also include a collecting plate, which is arranged above the rotating part and is used to receive the particulate material from the opening; the collecting plate is provided with a through hole, and the rotating part rotates so that the plurality of grooves can be aligned with the through hole in sequence.

[0010] Furthermore, the surface of the collecting plate may extend downwardly and obliquely toward the through hole, so that the granular materials from the opening can roll to the through hole one by one.

[0011] Further, the rotating part may be elastic, and the rotating part abuts against the collecting plate at the through hole.

[0012] Furthermore, the flipping part includes: a rotating shaft connected to the holding part, and a driving part for driving the rotating shaft to rotate.

[0013] Furthermore, the injection device may also include a first shell, which defines a first collecting chamber, the top of the first collecting chamber has a first opening, and the bottom of the first collecting chamber has a first outlet; the retaining portion is installed at the first opening of the first shell through a flipping portion, and when the flipping portion drives the retaining portion to flip, the particulate material falling from the opening of the container can enter the first collecting chamber through the first opening, and fall to the particle separation portion through the first outlet.

[0014] Furthermore, the injection device may also include a second shell, which defines a second collecting chamber, the top of the second collecting chamber has a second opening, and the bottom of the second collecting chamber has a second outlet; the collecting plate is installed at the second opening, the rotating part is installed in the second collecting chamber, and the particulate material after quantitative separation is discharged from the second outlet in sequence.

[0015] Further, the holding portion may include a shielding cylinder, and the container is disposed in the shielding cylinder.

[0016] Furthermore, the injection device may also include a shell defining a sealed cavity, wherein the retaining portion, the flipping portion and the particle separation portion are located in the sealed cavity, the top of the shell has an openable opening for placing a container, the bottom of the shell has an outlet, and a valve is provided at the outlet.

[0017] The injection device of the embodiment of the present application is provided with a flipping part, and the flipping part is configured to drive the holding part to flip, so that the material particles can be dispersed and rolled; and a particle separation part is provided to achieve quantitative separation of the particle material, which is beneficial to the uniform injection of the particle material.

[0018] These and other advantages of the present application will become more apparent through the following detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to further illustrate the above and other advantages and features of the present application, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. The accompanying drawings together with the following detailed description are included in this specification and form a part of this specification. Elements with the same function and structure are represented by the same reference numerals. It should be understood that these drawings only describe typical examples of the present application and should not be regarded as limiting the scope of the present application.

[0020] Figure 1 It is a schematic structural diagram of the injection device of an embodiment of the present application.

[0021] Figure 2 It is a partially enlarged schematic diagram of the contact position between the rotating part of the injection device and the collecting plate of the embodiment of the present application.

[0022] Figure 3 It is a schematic structural diagram of the injection device of an embodiment of the present application.

[0023] Figure 4 It is a schematic diagram of the mixing process of the tracer and the proppant injected by the injection device of the embodiment of the present application.

[0024] It should be noted that the drawings are not drawn to scale, and for illustrative purposes, elements of similar structure or function are generally represented by similar reference numerals throughout the drawings. It should also be noted that the drawings are only for the convenience of describing the preferred embodiments, not the present application itself. The drawings do not illustrate every aspect of the described embodiments and do not limit the scope of the present application.

[0025] Description of reference numerals:

[0026] 100, injection device; 10, holding part; 11, shielding cylinder; 20, turning part; 21, rotating shaft; 22, driving part; 30, particle separation part; 31, rotating part; 311, groove; 32, driving part; 33, collecting plate; 331, through hole; 40, first shell; 41, first collecting chamber; 42, first opening; 43, first outlet; 44, tapered chamber; 50, second shell; 51, second collecting chamber; 52, second opening; 53, second outlet; 54, tapered chamber; 60, shell; 61, opening; 62, outlet; 63, valve; 70, hose;

[0027] 200, tracer;

[0028] 300, proppant;

[0029] 400. Injection pipeline. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0031] It is also necessary to explain here that, in order to avoid obscuring the present application due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present application are shown in the accompanying drawings, while other details that are not very relevant to the present application are omitted.

[0032] The disclosure below provides a plurality of different embodiments or examples for implementing the present application. In order to simplify the disclosure of the present application, the components and methods of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the present application.

[0033] The embodiment of the present application provides a device for injecting granular material, wherein the granular material is held in a container having an opening. Figure 1 , which shows a schematic structural diagram of an injection device according to an embodiment of the present application, the injection device 100 may include a holding portion 10, a flipping portion 20, and a particle separation portion 30. The holding portion 10 may be used to hold a container; the flipping portion 20 may be used to drive the holding portion 10 to flip, so as to drive the container to flip until an angle exists between the plane where the opening is located and the horizontal plane, so that the granular material in the container can roll to the opening and fall through the opening; the particle separation portion 30 may be configured to receive the granular material from the opening and quantitatively separate the granular material.

[0034] The injection device 100 of the embodiment of the present application is provided with a flipping part 20, and the flipping part 20 is configured to drive the holding part 10 to flip, so that the material particles can be dispersed and rolled; and a particle separation part 30 is provided to achieve quantitative separation of the particle material, which is beneficial to the uniform injection of the particle material.

[0035] In the embodiment of the present application, the flipping angle of the holding part 10 driven by the flipping part 20 can be controlled (for example, the angle between the plane where the container opening is located and the horizontal plane is within 10 degrees), so that the material particles in the container can be dispersed and rolled along the inner wall of the container to the opening, rather than being directly scattered downward from the opening. In this way, in a short time interval, only a small amount of material particles fall from the opening, which is conducive to the quantitative separation of the particulate material by the particle separation part 30 (for example, separation of one particle by one or separation of several particles), avoiding blockage.

[0036] In some embodiments, the particulate material may be a radioactive tracer, and the container for holding the particulate material may be an aluminum cylinder with an upper end opening. In some embodiments, the holding portion 10 may further include a shielding cylinder 11, and the container is disposed in the shielding cylinder 11 to shield the radiation of the particulate material as much as possible and reduce the radiation dose received by the operator. The shielding cylinder 11 may be provided with a hole for a top screw to pass through, so that the container is fixed in the shielding cylinder 11 by the top screw to prevent the container from detaching from the shielding cylinder 11 during the flipping process.

[0037] In some embodiments, the shielding tube 11 may be made of lead.

[0038] See also Figure 1 In some embodiments, the particle separation unit 30 includes a rotating unit 31 and a driving unit 32. The rotating unit 31 is rotatably disposed below the flip unit 20, and the driving unit 32 is used to drive the rotating unit 31 to rotate. Figure 2 The rotating part 31 is provided with a plurality of grooves 311 along its circumference, and the grooves 311 are used to receive the granular materials from the opening, and the granular materials fall from the grooves 311 as the grooves 311 roll along with the rotating part 31. During the rolling of the rotating part 31, the granular materials are quantitatively separated through the grooves 311.

[0039] The size of the groove 311 can be designed according to the size of the granular material, thereby determining the number of particles that the groove 311 can quantitatively separate.

[0040] For example, in some embodiments, the diameter of the granular material is 40-100 mesh. In some cases, it is necessary to ensure that only one granular material can enter the groove 311 at a time, so the groove 311 can be set to have a diameter and a depth of 1 mm.

[0041] In some embodiments, the number of the grooves 311 may be 5-25, for example, 20. In some embodiments, all the grooves 311 are arranged at equal intervals in the circumference of the rotating part 31. When the driving part 32 drives the rotating part 31 to rotate at a constant speed, the granular materials in two adjacent grooves 311 can fall at equal intervals, thereby achieving uniform mixing of the granular materials with other materials. The injection rate of the granular materials can be determined according to the rotation speed of the rotating part 31 driven by the driving part 32.

[0042] In some embodiments, the rotating portion 31 may be a roller.

[0043] In some embodiments, the injection device may further include a deceleration unit, through which the rotating unit 31 may be connected to the driving unit 32, and through which the rotation speed of the rotating unit 31 may be adjusted. The deceleration unit may be a reducer.

[0044] like Figure 2As shown, it shows a partially enlarged schematic diagram of the contact position between the rotating part 31 and the collecting plate 33 of the injection device 100 of an embodiment of the present application. In some embodiments, the particle separation part 30 may also include a collecting plate 33, which is arranged above the rotating part 31 to receive the particulate material from the opening; the collecting plate 33 is provided with a through hole 331, and when the rotating part 31 rotates, the multiple grooves 311 can be aligned with the through hole 331 in sequence.

[0045] In some embodiments, when the diameter of the granular material is 40-70 or 70-100 mesh, the diameter of the through hole 331 can be 0.8mm-0.6mm or 0.4mm-0.3mm, respectively. The diameter of the through hole 331 can be selected appropriately according to the diameter of the granular material to ensure that the granular material passes through the through hole 331 evenly and avoids the granular material from being blocked. In some embodiments, the granular material can pass through the through hole 331 almost one by one.

[0046] In some embodiments, the surface of the collecting plate 33 extends downwardly and obliquely toward the through hole 331, so that the granular materials from the opening can roll to the through hole 331 one by one. The surface of the collecting plate 33 can be a curved surface or a plurality of inclined surfaces, and the through hole 331 is located at the lowest point of the entire surface. When the granular materials from the opening fall onto the surface of the collecting plate 33, they will automatically roll to the through hole 331 along the curved surface or the flat surface under the action of their own gravity. In order to prevent the granular materials from quickly gathering at the through hole 331, when the surface of the collecting plate 33 is a curved surface, the curved surface has a slight curvature, for example, the curvature of the curved surface can be 5-10 degrees; when the surface of the collecting plate 33 is a plurality of inclined surfaces, the slope of the inclined surface can be, for example, 5-10 degrees.

[0047] In some embodiments, the rotating part 31 is elastic, and the rotating part 31 abuts against the collecting plate 33 at the through hole 331. After the elastic rotating part 31 abuts against the collecting plate 33, the line contact between the rotating part 31 and the collecting plate 33 can be changed to surface contact through slight deformation of the rotating part 31, thereby preventing the granular material from rolling to the outside of the rotating part 31 and the collecting plate 33 through the through hole 331. In some embodiments, the rotating part 31 can be made of polyurethane.

[0048] See also Figure 1 In some embodiments, the flip part 20 may include a rotating shaft 21 and a driving part 22, wherein the rotating shaft 21 is connected to the holding part 10, and the driving part 22 is used to drive the rotating shaft 21 to rotate. In some embodiments, there may be two rotating shafts 21, and the two rotating shafts 21 may be coaxially arranged on both sides of the holding part 10, wherein one rotating shaft 21 may be connected to the driving part 22, and the other rotating shaft 21 may be rotatably arranged on the first housing 40 mentioned below. The rotation speed and direction of the rotating shaft 21 may be adjusted by the driving part 22.

[0049] In some embodiments, the rotating shaft 21 may also be connected to the driving part 22 via a speed reducing part, and the speed reducing part may be used to adjust the rotation rate of the rotating shaft 21. The speed reducing part may be a reducer.

[0050] See also Figure 1 In some embodiments, the injection device 100 may further include a first shell 40. The first shell 40 defines a first collecting chamber 41, the top of the first collecting chamber 41 has a first opening 42, and the bottom of the first collecting chamber 41 has a first outlet 43. The holding portion 10 is installed at the first opening 42 of the first shell 40 through the flipping portion 20. When the flipping portion 20 drives the holding portion 10 to flip, the particulate material falling from the opening of the container can enter the first collecting chamber 41 through the first opening 42, and fall to the particle separation portion 30 through the first outlet 43.

[0051] In some embodiments, the first collecting chamber 41 may include a conical chamber 44, the diameter of which gradually decreases from top to bottom to form a funnel shape. The opening of the container is located above the conical chamber 44, and the granular material falling from the opening of the container can enter the conical chamber 44. The first outlet 43 is located at the bottom of the conical chamber 44, so that all the granular material entering the conical chamber 44 flows out from the first outlet 43. When the diameter of the granular material is 40-70 or 70-100 mesh, the diameter of the first outlet 43 can be 0.8mm-0.6mm or 0.4mm-0.3mm, respectively. The first outlet 43 of different diameters can be selected according to the particle size of the granular material, which is beneficial to prevent the granular material from failing to fall from the first outlet 43, and also to prevent a large number of material particles from falling from the first outlet 43, so that the granular material can fall to the particle separation part 30 more evenly.

[0052] In some embodiments, when the diameter of the granular material is 40-100 mesh, the distance between the first outlet 43 and the collecting plate 33 can be 1.5-3 mm. This arrangement can prevent the granular material from being stuck between the two and unable to enter the through hole 331 due to the distance between the two being too small; it can also prevent the granular material from being ejected after falling to the surface of the collecting plate 33 and unable to smoothly enter the through hole 331 due to the distance between the two being too large. In a specific embodiment, the distance between the first outlet 43 and the collecting plate 33 can be 2 mm.

[0053] See also Figure 1In some embodiments, the injection device 100 may further include a second shell 50. The second shell 50 defines a second collecting chamber 51, the top of the second collecting chamber 51 has a second opening 52, and the bottom of the second collecting chamber 51 has a second outlet 53. The collecting plate 33 is mounted on the second opening 52, and the rotating part 31 is rotatably mounted in the second collecting chamber 51, and the quantitatively separated particulate materials are discharged from the second outlet 53 in sequence. The second collecting chamber 51 may include a conical chamber 54, and the diameter of the conical chamber 54 gradually decreases from top to bottom to form a funnel shape. The rotating part 31 is located above the conical chamber 54, and the particulate materials falling from the groove 311 of the rotating part 31 can enter the conical chamber 54. The second outlet 53 is located at the bottom end of the conical chamber 54, so that the particulate materials entering the conical chamber 54 can flow out from the second outlet 53 smoothly.

[0054] In some embodiments, when the diameter of the granular material is 40-100 mesh, the diameter of the second outlet 53 may be 6 mm to facilitate the granular material to roll out smoothly.

[0055] like Figure 3 As shown, it shows a schematic diagram of the structure of the injection device 100 of the embodiment of the present application. In some embodiments, the injection device 100 also includes a shell 60, the shell 60 defines a sealed cavity, the holding portion 10, the flip portion 20 and the particle separation portion 30 are located in the sealed cavity, and the top of the shell 60 has an opening 61 that can be opened for placing a container. The top of the shell 60 may have a cover for opening or closing the opening 61. The bottom of the shell 60 has an outlet 62, and a valve 63 is provided at the outlet 62. Since the holding portion 10, the flip portion 20, the particle separation portion 30, the first shell 40 and the second shell 50 are located in the sealed cavity, when an earthquake or other accident occurs and causes the injection device 100 to fall, the sealed cavity can prevent the particulate matter in the injection device 100 from entering the external environment, and can avoid environmental pollution caused by the particulate matter. In some embodiments, the valve 63 can be a small ball valve.

[0056] See also Figure 3 In some embodiments, the injection device 100 further includes a hose 70 connected to the second outlet 53, and the granular material can fall from the second outlet 53 into the hose 70 and be supplied to the outside through the hose 70. The hose 70 can extend substantially in a vertical direction. In some embodiments, the granular material is a sphere with a sphericity of 9 or more, so that it can roll out of the hose 70 under its own gravity and will not remain in the hose 70. When in use, avoid bending or tying the hose 70, and keep the inner wall of the hose 70 dry to avoid granular material remaining in the hose 70 and causing the hose 70 to be contaminated.

[0057] In some embodiments, an opening is provided at the bottom of the shell 60, and a hose 70 connected to the second outlet 53 can extend from the opening to the outside of the shell 60, and a sealing ring is provided at the contact position between the hose 70 and the opening to achieve sealing of the opening at the bottom of the shell 60, so as to prevent particulate matter from leaving the shell 60 from the opening at the bottom of the shell 60 when it is accidentally spilled from the injection device 100 into the shell 60.

[0058] In some embodiments, the bottom of the housing 60 may be conical, the outlet 62 may be located at the lowest point of the cone, the diameter of the outlet 62 may be 10 mm, and the valve 63 at the outlet 62 is always in a closed state during normal injection. When the granular material falls into the housing 60, a conduit may be connected to the outlet 62, and the valve 63 may be opened to guide the granular material in the housing 60 into the container through the conduit, and the guided granular material may be stored or reloaded into the container for further use.

[0059] like Figure 4 As shown, it shows a schematic diagram of the mixing process of the tracer 200 and the proppant 300 injected by the injection device 100 of the embodiment of the present application. During mixing, the injection device 100 and the injection pipeline 400 of the proppant 300 are both installed above the sand mixing tank, and the hose 70 is basically in a vertical state. The outlet of the hose 70 can be located at the outlet of the injection pipeline 400, so that the tracer 200 rolling out of the hose 70 can be directly mixed into the proppant 300 flowing out of the injection pipeline 400.

[0060] During mixing, the ratio of the tracer 200 to the proppant 300 can be adjusted by adjusting the injection speed of the tracer 200 and the proppant 300. For example, the injection speed of the tracer 200 can be m grains / minute, and the injection speed of the proppant 300 can be n cubic meters / minute. By adjusting the number of grains m of the tracer 200 actually injected per minute and the number of cubic meters n of the proppant 300, the tracer 200 and the proppant 300 can be mixed relatively evenly at a preset ratio. By using the injection device of the embodiment of the present application, 10,000 to 20,000 grains of the tracer 200 can be evenly mixed with tens of cubic meters of the proppant 300.

[0061] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0062] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for injecting granular material, wherein the granular material is held in a container having an opening, characterized in that: The injection device comprises: A holding portion, used for holding the container; a turning portion, used to drive the holding portion to turn over, so as to drive the container to turn over until an angle exists between the plane where the opening is located and the horizontal plane, so that the granular material in the container can roll to the opening and fall through the opening; and The particle separation portion is configured to receive the particle material from the opening and quantitatively separate the particle material.

2. The injection device according to claim 1, characterized in that: The particle separation unit comprises: a rotating part rotatably disposed below the turning part, wherein the rotating part is provided with a plurality of grooves along its circumference, wherein the grooves are used to receive the granular material from the opening, and the granular material falls from the grooves during the rolling of the grooves along with the rotating part; and The driving part is used to drive the rotating part to rotate.

3. The injection device according to claim 2, characterized in that: The particle separation unit further comprises: A collecting plate is arranged above the rotating part and is used for receiving the particulate material from the opening. The collecting plate is provided with a through hole. When the rotating part rotates, the multiple grooves can be aligned with the through hole in sequence.

4. The injection device according to claim 3, characterized in that: The surface of the collecting plate extends obliquely downward toward the through hole, so that the granular materials from the opening can roll to the through hole one by one.

5. The injection device according to claim 3, characterized in that: The rotating part is elastic and abuts against the collecting plate at the through hole.

6. The injection device according to claim 1, characterized in that: The turning part comprises: A rotating shaft connected to the holding portion; and The driving unit is used to drive the rotating shaft to rotate.

7. The injection device according to claim 1, characterized in that: Also includes: A first shell, wherein the first shell defines a first collecting chamber, the top of the first collecting chamber has a first opening, and the bottom of the first collecting chamber has a first outlet; The holding portion is installed at the first opening of the first shell through the flipping portion. When the flipping portion drives the holding portion to flip, the particulate material falling from the opening of the container can enter the first collecting chamber through the first opening and fall to the particle separation portion through the first outlet.

8. The injection device according to claim 3, characterized in that: Also includes: A second shell, wherein the second shell defines a second collecting chamber, the top of the second collecting chamber has a second opening, and the bottom of the second collecting chamber has a second outlet; The collecting plate is installed at the second opening, the rotating part is installed in the second collecting chamber, and the particulate materials after quantitative separation are discharged from the second outlet in sequence.

9. The injection device according to any one of claims 1 to 8, characterized in that: The holding portion comprises: A shielding cylinder, wherein the container is arranged in the shielding cylinder.

10. The injection device according to any one of claims 1 to 8, characterized in that: Also includes: The shell defines a sealed cavity, the retaining portion, the flipping portion and the particle separation portion are located in the sealed cavity, the top of the shell has an openable opening for placing the container, the bottom of the shell has an outlet, and a valve is provided at the outlet.

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