Material delivery equipment for oil field underground fracturing

Abstract

The utility model discloses material delivery equipment for oil field underground fracturing, and relates to the technical field of material delivery equipment. The device comprises a base, the top of the base is fixedly connected with a vertical plate, the side wall of the vertical plate is fixedly connected with a material storage barrel, the vertical plate above the material storage barrel is slidably connected with a first barrel cover, and the top of the first barrel cover is fixedly provided with a first motor. The stirring blades are driven to rotate by driving the stirring shaft, materials in the material storage barrel can be stirred, the materials are evenly mixed, precipitation is prevented from affecting the follow-up fracturing effect, the scraping strips are driven by the driving rotating shaft to slide along the inner side wall of the material storage barrel, excessive materials can be prevented from remaining on the inner side wall of the material storage barrel, and the crushing effect is improved. And by anticlockwise rotating a double-thread screw, a first barrel cover can be driven to move upwards, a supporting sleeve and a material storage barrel are driven to move downwards, and therefore workers can conveniently clean the material storage barrel, the interior of the material storage barrel, stirring blades and scraping strips.

Description

Technical Field

[0001] This utility model belongs to the technical field of material delivery equipment, and in particular relates to a material delivery equipment for oilfield downhole fracturing. Background Technology

[0002] In the petroleum industry, fracturing refers to a method of creating fractures in oil and gas reservoirs using hydraulic action during oil or gas production. Also known as hydraulic fracturing, fracturing artificially creates fractures in the formation, improving the underground flow environment of oil and increasing oil well production. It plays an important role in improving bottomhole flow conditions, mitigating inter-layer flow, and improving reservoir dynamics. The materials used in fracturing are mainly divided into working fluids and proppant. Working fluids are further divided into pre-flush fluids, proppant-carrying fluids, and displacement fluids. Working fluids are formulated by mixing thickeners, flow aids, anti-swelling agents, temperature stabilizers, complexing agents, crosslinking agents, and other additives under certain conditions. Props are further divided into silt, quartz sand, and ceramsite, etc. A search revealed that patent application number 202323007315.2 discloses a material delivery device for oilfield downhole fracturing, including an oilfield downhole fracturing material delivery device body. The oilfield downhole fracturing material delivery device body includes a storage tank and a storage box set above it. An L-shaped support plate is fixedly connected to the left side of the storage box, and the bottom of the storage box is set with a conical structure and connected to and fixed with a solenoid valve. A pump is fixedly installed on the bottom right side of the storage box.

[0003] However, in actual use, the applicant found that during the process of pumping the material inside the storage tank to the external oilfield fracturing feed pipe through the pump, a lot of material would remain on the inner wall of the storage tank, which would reduce the amount of material fed and thus affect the subsequent fracturing effect. In view of this, we propose a material feeding device for oilfield downhole fracturing. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a material delivery device for downhole fracturing in oilfields, comprising a base, a vertical plate fixedly connected to the top of the base, a storage cylinder fixedly connected to the side wall of the vertical plate, a first cylinder cover slidably connected to the vertical plate above the storage cylinder, a first motor fixedly mounted on the top of the first cylinder cover, the output end of the first motor penetrating the first cylinder cover and coaxially fixedly connected to a stirring shaft, and stirring blades provided on the peripheral side wall of the stirring shaft; a second cylinder cover fixedly connected to the side wall of the vertical plate below the storage cylinder, a second motor fixedly mounted on the top of the second cylinder cover, the output end of the second motor penetrating the second cylinder cover and coaxially fixedly connected to a... A rotating shaft is provided, on which scraper blades are symmetrically fixed. A material storage cylinder is provided below the second cylinder cover. A support sleeve is fixedly fitted to the outside of the material storage cylinder, and the support sleeve is slidably connected to the vertical plate. The scraper blades slide along the inner side wall of the material storage cylinder. A material guide pipe is fixedly provided at the bottom of the material storage cylinder. The lower end of the material guide pipe passes through the second cylinder cover, and a solenoid valve is fixedly fitted to the upper part of the material guide pipe. A material pump is fixedly installed at the top of the base. The discharge pipe at the bottom of the material storage cylinder is connected to the inlet end of the material pump through a connecting pipe. A double-ended screw is rotatably connected to the vertical plate through a bearing. The threads of the double-ended screw pass through the first cylinder cover and the support sleeve.

[0006] Preferably, the T-shaped slider on one side of the first cylinder cover slides along the T-shaped groove opened on the upper part of the upright plate, and the T-shaped slider on one side of the support sleeve slides along the T-shaped groove opened on the lower part of the upright plate.

[0007] Preferably, the threads at both ends of the double-ended screw have opposite directions of rotation. The two ends of the double-ended screw are threaded through the T-shaped slider on one side of the first cylinder cover and the T-shaped slider on the other side of the support sleeve, respectively. The upper end of the double-ended screw passes through the top of the vertical plate and is fitted with an adjusting disc.

[0008] Preferably, a controller is fixedly mounted on the upright plate. The controller is electrically connected to an external power source via wires. The first motor, the second motor, the material pump, and the solenoid valve are electrically connected to the controller via wires.

[0009] Preferably, a feed branch pipe is provided through the first cylinder cover on one side of the first motor.

[0010] Preferably, the discharge end of the pump is connected to an external oilfield fracturing feed pipe via a connecting hose.

[0011] This utility model has the following beneficial effects:

[0012] This utility model discloses a material feeding device for downhole fracturing in oilfields. By driving the stirring shaft to rotate the stirring blades, the device can stir the material inside the storage cylinder, ensuring uniform mixing and preventing sedimentation that could affect subsequent fracturing results. By driving the rotating shaft to move the scraper along the inner wall of the storage cylinder, the device can prevent excessive material residue on the inner wall of the storage cylinder from affecting subsequent fracturing results. By rotating the double-headed screw counterclockwise, the first cylinder cover can be moved upward, and the support sleeve and the storage cylinder can be moved downward, thus facilitating personnel to clean the inside of the storage cylinder and the storage cylinder, as well as the stirring blades and scraper. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the external structure of a material delivery device for downhole fracturing in oilfields according to this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of a material delivery device for downhole fracturing in oilfields according to this utility model;

[0016] Figure 3 This utility model relates to a material delivery device for downhole fracturing in oilfields. Figure 2 Enlarged view of the structure at point A in the middle.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1. Base; 2. Vertical plate; 3. Controller; 4. Storage cylinder; 5. First cylinder cover; 51. Feed branch pipe; 6. First motor; 7. Second cylinder cover; 8. Second motor; 9. Storage cylinder; 91. Support sleeve; 10. Connecting pipe; 11. Pump; 12. Double-ended screw; 121. Adjusting disc; 13. Stirring shaft; 131. Stirring blade; 14. Solenoid valve; 15. Guide branch pipe; 16. Rotating shaft; 161. Scraper. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 As shown, this utility model provides a technical solution:

[0021] A material delivery device for downhole fracturing in oilfields includes a base 1, a vertical plate 2 fixedly connected to the top of the base 1, a storage cylinder 4 fixedly connected to the side wall of the vertical plate 2, a first cylinder cover 5 slidably connected to the vertical plate 2 above the storage cylinder 4, a first motor 6 fixedly mounted on the top of the first cylinder cover 5, a feed branch pipe 51 penetrating through the first cylinder cover 5 on one side of the first motor 6, an agitator shaft 13 coaxially fixedly connected to the output end of the first motor 6 through the first cylinder cover 5, and agitator blades 131 provided on the peripheral side wall of the agitator shaft 13. By driving the agitator shaft 13 to rotate the agitator blades 131, the material inside the storage cylinder 4 can be agitated, so that the material is evenly mixed and sedimentation is prevented from affecting the subsequent fracturing effect. A second cylinder cover 7 fixedly connected to the side wall of the vertical plate 2 below the storage cylinder 4, a second motor 8 fixedly mounted on the top of the second cylinder cover 7, a rotating shaft 16 coaxially fixedly connected to the output end of the second motor 8 through the second cylinder cover 7, and scraper blades 161 symmetrically fixedly mounted on the rotating shaft 16. Below the 7, a storage cylinder 9 is provided. A support sleeve 91 is fixedly fitted to the outside of the storage cylinder 9, and the support sleeve 91 is slidably connected to the vertical plate 2. The scraper 161 slides along the inner wall of the storage cylinder 9. A guide pipe 15 is fixedly provided at the bottom of the storage cylinder 4. The lower end of the guide pipe 15 passes through the second cylinder cover 7, and a solenoid valve 14 is fixedly fitted to the upper part of the guide pipe 15. A pump 11 is fixedly installed on the top of the base 1. A controller 3 is fixedly installed on the vertical plate 2. The controller 3 is connected to an external device via a wire. The power supply is electrically connected. The first motor 6, the second motor 8, the pump 11, and the solenoid valve 14 are electrically connected to the controller 3 through wires. The discharge pipe at the bottom of the storage cylinder 9 is connected to the feed end of the pump 11 through the connecting pipe 10. The discharge end of the pump 11 is connected to the external oilfield fracturing feed pipe through the connecting hose. The drive shaft 16 drives the scraper 161 to slide along the inner wall of the storage cylinder 9, which can prevent too much material from remaining on the inner wall of the storage cylinder 9 and affecting the subsequent fracturing effect.

[0022] A T-shaped slider on one side of the first cylindrical cover 5 slides along a T-shaped groove on the upper part of the vertical plate 2, and a T-shaped slider on one side of the support sleeve 91 slides along a T-shaped groove on the lower part of the vertical plate 2. A double-ended screw 12 is rotatably connected to the vertical plate 2 via a bearing. The double-ended screw 12 is threaded through the first cylindrical cover 5 and the support sleeve 91. The threads at both ends of the double-ended screw 12 have opposite directions of rotation. The two ends of the double-ended screw 12 are respectively threaded through the T-shaped slider on one side of the first cylindrical cover 5 and the T-shaped slider on one side of the support sleeve 91. The double-headed screw 12 is driven to rotate, which can move the first cylinder cover 5 upward and the support sleeve 91 and the storage cylinder 9 downward together. The upper end of the double-headed screw 12 passes through the top of the vertical plate 2 and is fitted with an adjusting plate 121. By rotating the double-headed screw 12 counterclockwise, the first cylinder cover 5 can be moved upward and the support sleeve 91 and the storage cylinder 9 can be moved downward, which makes it easier for personnel to clean the inside of the storage cylinder 4 and the storage cylinder 9, as well as the stirring blade 131 and the scraper 161.

[0023] Working principle: In use, the discharge end of the pump 11 is connected to the external oilfield fracturing feed pipe via a connecting hose. The controller 3 drives the first motor 6 to rotate the stirring shaft 13 along with the stirring blades 131, mixing and stirring the material inside the storage cylinder 4 until it is uniform. The solenoid valve 14 is then opened to a certain extent, and a certain amount of material is introduced into the storage cylinder 9 through the feed branch pipe 15. The pump 11 is then driven to pump the material inside the storage cylinder 9 to the external oilfield fracturing feed pipe through the connecting pipe 10. The material is then fed through the oilfield fracturing pipe. The second motor 8 drives the rotating shaft 16 to rotate, and the rotating shaft 16 drives the scraper 161 to clean the inner wall of the storage cylinder 9, preventing excessive material residue on the inner wall of the storage cylinder 9 from affecting the fracturing effect. When it is necessary to clean the inside of the storage cylinder 4 and the storage cylinder 9, the double-headed screw 12 can be rotated counterclockwise by manually rotating the adjusting plate 121. The rotation of the double-headed screw 12 can drive the first cylinder cover 5 to move upward, and drive the support sleeve 91 and the storage cylinder 9 to move downward, thereby cleaning the inner wall of the storage cylinder 4, the stirring blade 131, the inner wall of the storage cylinder 9, and the scraper 161.

[0024] The text shows and describes the basic principles, main features and advantages of this utility model. The standard parts used in this utility model can all be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part can all adopt conventional methods such as bolts, rivets and welding that are mature in the prior art. The machinery, parts and equipment can all adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art. This part will not be described in detail in the text.

[0025] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications to the technical solutions described in the foregoing embodiments or equivalent substitutions of some of the technical features shall fall within the protection scope of the present utility model.

Claims

1. A material delivery device for downhole fracturing in oilfields, comprising a base (1), characterized in that: A vertical plate (2) is fixedly connected to the top of the base (1). A storage cylinder (4) is fixedly connected to the side wall of the vertical plate (2). A first cylinder cover (5) is slidably connected to the vertical plate (2) above the storage cylinder (4). A first motor (6) is fixedly installed on the top of the first cylinder cover (5). The output end of the first motor (6) passes through the first cylinder cover (5) and is coaxially fixedly connected to a stirring shaft (13). Stirring blades (131) are provided on the peripheral side wall of the stirring shaft (13). A second cylinder cover (7) is fixedly connected to the side wall of the vertical plate (2) below the storage cylinder (4). A second motor (8) is fixedly installed on the top of the second cylinder cover (7). The output end of the second motor (8) passes through the second cylinder cover (7) and is coaxially fixedly connected to a rotating shaft (16). Scraper strips (161) are symmetrically fixedly installed on the rotating shaft (16). Below the second cylinder cover (7), there is a storage cylinder (9). A support sleeve (91) is fixedly fitted on the outside of the storage cylinder (9), and the support sleeve (91) is slidably connected to the vertical plate (2). The scraper (161) slides along the inner wall of the storage cylinder (9). A guide pipe (15) is fixedly installed at the bottom of the storage cylinder (4). The lower end of the guide pipe (15) passes through the second cylinder cover (7), and a solenoid valve (14) is fixedly fitted on the upper part of the guide pipe (15). A pump (11) is fixedly installed at the top of the base (1). The discharge pipe at the bottom of the storage cylinder (9) is connected to the feed end of the pump (11) through a connecting pipe (10). A double-headed screw (12) is rotatably connected in the vertical plate (2) through a bearing. The thread of the double-headed screw (12) passes through the first cylinder cover (5) and the support sleeve (91).

2. The material delivery equipment for oilfield downhole fracturing according to claim 1, characterized in that, The T-shaped slider on one side of the first cylinder cover (5) slides along the T-shaped groove opened on the upper part of the vertical plate (2), and the T-shaped slider on one side of the support sleeve (91) slides along the T-shaped groove opened on the lower part of the vertical plate (2).

3. The material delivery equipment for oilfield downhole fracturing according to claim 2, characterized in that, The threads at both ends of the double-ended screw (12) are in opposite directions. The two ends of the double-ended screw (12) are threaded through the T-shaped slider on one side of the first cylinder cover (5) and the T-shaped slider on one side of the support sleeve (91), respectively. The upper end of the double-ended screw (12) passes through the top of the vertical plate (2) and is fitted with an adjusting disc (121).

4. The material delivery equipment for downhole fracturing in oilfields according to claim 1, characterized in that, A controller (3) is fixedly installed on the upright plate (2). The controller (3) is electrically connected to an external power source through wires. The first motor (6), the second motor (8), the material pump (11), and the solenoid valve (14) are electrically connected to the controller (3) through wires.

5. The material delivery equipment for oilfield downhole fracturing according to claim 1, characterized in that, A feed branch pipe (51) is provided through the first cylinder cover (5) on one side of the first motor (6).

6. The material delivery equipment for downhole fracturing in oilfields according to claim 1, characterized in that, The discharge end of the pump (11) is connected to the external oilfield fracturing feed pipe via a connecting hose.

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