Variable stick slip slickwater injection device

Abstract

The application relates to a variable viscous slick water injection device, and belongs to the technical field of slick water, which has a relatively simple overall structure, can solve the problems of insufficient stability and stress concentration of the existing device through multiple limiting, elastic damping and flexible connection compared with the prior art, and can improve the equipment reliability and fracturing operation efficiency. The device comprises a main frame, a mounting seat, a plurality of composite springs and a plurality of composite rubber columns, a mounting plate, a liquid pump body, a limiting assembly and the like.

Description

Technical Field

[0001] This application relates to the field of petroleum engineering technology, and in particular to a variable viscosity slippery water injection device. Background Technology

[0002] As is well known, in the field of petroleum engineering technology, slickwater injection devices are the core equipment for fracturing operations. Their operational stability directly affects the efficiency of oil and gas extraction and construction safety. Slickwater refers to a fracturing fluid system for hydraulic fracturing of shale oil and gas reservoirs. It has the characteristics of high efficiency and low cost, and therefore is widely used in shale development.

[0003] Currently, in the relevant technologies, a search reveals that the utility model with patent publication number CN219012577U discloses a variable viscosity-slippery water injection device. Although the injection angle and height are adjusted by a drive motor and a pneumatic cylinder, the applicant has found that the following defects still exist: In the prior art, the water pump body and the housing are rigidly fixed, and the rigid connection between the transmission components is prone to stress concentration when the pressure changes suddenly, which makes it difficult to meet the long-term stable operation requirements under complex well conditions, and thus easily affects the fracturing effect.

[0004] Therefore, in response to the aforementioned technologies, we propose a variable viscosity slippery water injection device. Utility Model Content

[0005] The purpose of this invention is to provide a variable viscosity slippery water injection device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A variable viscosity slippery water injection device, comprising:

[0008] Main framework;

[0009] The mounting base is fixedly connected to the main frame, and a strip groove is provided inside the mounting base. Multiple composite springs and composite rubber columns are fixedly connected inside the strip groove, and a mounting plate is fixedly connected to the other end of the multiple composite springs and multiple composite rubber columns.

[0010] The pump body is detachably connected to the mounting plate, and the input end and output end of the pump body are respectively connected to the inlet pipe and the outlet pipe. The outlet pipe extends into the main frame through the connection hole.

[0011] A limiting component, which is disposed within the main frame, is used to effectively limit the main frame to the production well.

[0012] A positioning component is disposed on the outer wall of the main frame and is used to fix and limit the main frame in the use position.

[0013] As a further embodiment of this utility model: the limiting component includes two adjusting screws, both of which are threaded to the main frame through threaded rings. The opposite ends of the two adjusting screws are rotatably connected to limiting clamps, and the opposite ends of the two limiting clamps are fixedly connected to limiting rods. The other end of the limiting rods is slidably connected to the main frame through a connecting ring.

[0014] As a further improvement of this utility model: the ends of the two adjusting screws that are far apart from each other are fixedly connected to the turntable body, and the ends of the two limiting clamps that are opposite each other are provided with anti-slip rubber pads.

[0015] As a further embodiment of this utility model: the positioning component includes four positioning seats, all four positioning seats are symmetrically arranged on the outer wall of the main frame, and positioning holes are opened in the positioning seats. A constraint ring is provided in the positioning hole, and a positioning stake is vertically slidably connected in the constraint ring.

[0016] As a further improvement of this utility model, the liquid outlet pipe is vertically slidably connected to the main frame via a rubber ring.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] By setting up a limiting component, the adjusting screw drives the limiting clamp to fit against the outer wall of the mine, achieving initial limiting of the main frame to improve installation stability. Then, the positioning piles in the positioning component are driven into the ground, the constraint ring adapts to different terrains, and the four positioning seats are symmetrically fixed, strengthening the stability of the device in the use position to avoid vibration displacement. The composite spring and rubber column in the mounting seat elastically connect the main body of the pump, buffering operational vibration and pressure changes, reducing rigid impact and stress concentration, and meeting the long-term operation requirements of complex well conditions. Its overall structure is relatively simple. Compared with existing technologies, it solves the problems of insufficient stability and stress concentration of existing devices through multiple limiting, elastic damping and flexible connection, improving equipment reliability and fracturing operation efficiency. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the overall main view of this utility model;

[0020] Figure 2 This is a three-dimensional structural schematic diagram of a partial cross-section of the overall main view of this utility model;

[0021] Figure 3 This utility model Figure 2 A magnified schematic diagram of the local structure at point A;

[0022] Figure 4 This is a schematic diagram of the overall front view of the present invention.

[0023] In the diagram: 1. Main frame; 2. Mounting base; 3. Composite spring; 4. Composite rubber column; 5. Mounting plate; 6. Liquid pump body; 7. Inlet pipe; 8. Outlet pipe; 9. Adjusting screw; 10. Threaded ring; 11. Limiting clamp; 12. Limiting rod; 13. Connecting ring; 14. Turntable body; 15. Anti-slip pad; 16. Positioning seat; 17. Constraint ring; 18. Positioning post; 19. Rubber ring. Detailed Implementation

[0024] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The present application will be further described in detail below with reference to the accompanying drawings.

[0026] Please see Figures 1-4 In this embodiment of the present invention, a variable viscosity slippery water injection device includes:

[0027] Main frame 1;

[0028] Mounting base 2 is fixedly connected to the main frame 1, and a strip groove is opened in the mounting base 2. Multiple composite springs 3 and composite rubber columns 4 are fixedly connected in the strip groove, and the other end of the multiple composite springs 3 and multiple composite rubber columns 4 is fixedly connected to the mounting plate 5.

[0029] The liquid pump body 6 is detachably connected to the mounting plate 5, and the input end and output end of the liquid pump body 6 are respectively connected to the inlet pipe 7 and the outlet pipe 8. The outlet pipe 8 extends into the main frame 1 through the connection hole.

[0030] Limiting component, which is set inside the main frame 1, is used to effectively limit the main frame 1 on the production well;

[0031] The positioning component is set on the outer wall of the main frame 1 and is used to fix and limit the main frame 1 in the use position.

[0032] In operation, the variable viscosity slickwater injection device involves placing the main frame 1 next to the oil well. Rotating the turntable body 14 drives the adjusting screw 9 to rotate, and the threaded engagement of the threaded ring 10 with the main frame 1 causes the limiting clamp 11 to move laterally. Simultaneously, the limiting rod 12 slides within the connecting ring 13, guiding the two limiting clamps 11 to fit tightly against the outer wall of the well via the anti-slip rubber pad 15, thus completing the initial positioning of the main frame 1. Subsequently, the positioning stake 18 is removed from the constraint ring 17 of the positioning seat 16 and driven into the ground. The symmetrical fixing of the four positioning seats 16 achieves secondary positioning of the device, ensuring the stability of the main frame 1 in its operating position. After starting the pump body 6, the inlet pipe 7 draws in slickwater, and the outlet pipe 8 delivers the liquid to the oil well through the elastic sliding connection of the rubber ring 19. During this process, the composite spring 3 and composite rubber column 4 within the mounting seat 2 absorb vibrations and pressure changes during pump operation through elastic deformation, reducing stress concentration caused by rigid connections. This ensures stable operation of the device under complex well conditions and guarantees continuous and efficient injection of slickwater to improve fracturing performance.

[0033] exist Figure 1-3 In the middle: the limiting component includes two adjusting screws 9, both of which are threaded to the main frame 1 through threaded rings 10. The opposite ends of the two adjusting screws 9 are rotatably connected to limiting clamps 11, and the opposite ends of the two limiting clamps 11 are fixedly connected to limiting rods 12. The other end of the limiting rods 12 is slidably connected to the main frame 1 through connecting rings 13. The opposite ends of the two adjusting screws 9 are fixedly connected to a turntable body 14, and the opposite ends of the two limiting clamps 11 are provided with anti-slip pads 15.

[0034] The variable viscosity slippery water injection device uses a turntable to drive the adjusting screw 9 to rotate, and the threaded ring 10 and the main frame 1 to drive the limiting clamp 11 to move laterally. The limiting rod 12 slides and guides within the connecting ring 13, ensuring that the two limiting clamps 11 are synchronously attached to the outer wall of the mine. The anti-slip rubber pad 15 increases the contact friction, realizing the rapid positioning and anti-displacement fixation of the main frame 1 at the wellhead.

[0035] exist Figure 1-4 The positioning component includes four positioning seats 16, which are symmetrically arranged on the outer wall of the main frame 1. Each positioning seat 16 has a positioning hole, and a constraint ring 17 is installed in the positioning hole. A positioning pile 18 is vertically slidably connected in the constraint ring 17. The liquid outlet pipe 8 is vertically slidably connected to the main frame 1 through a rubber ring 19. By driving the positioning pile 18 into the ground, the constraint ring 17 guides and positions the pile, which, together with the four sets of positioning seats 16, forms a multi-point anchoring, enhancing the device's anti-overturning ability in complex terrain. The elastic sliding connection of the rubber ring 19 ensures both the sealed connection between the liquid outlet pipe 8 and the main frame 1 and allows the pipeline to undergo flexible displacement with the vibration of the liquid pump, avoiding pipeline fatigue fracture caused by rigid connection.

[0036] In this embodiment, the liquid pump body 6 is a commercially available device known to those skilled in the art. It can be customized or selected according to actual needs. Here, we are only using it without making any structural or functional improvements. We will not go into details here. The liquid pump body 6 is equipped with a matching control switch. The installation position of the control switch is selected according to actual usage needs to facilitate operation and control by the operator. The technology is already very mature and can be implemented.

[0037] The implementation principle of the variable viscosity slippery water injection device in this application embodiment is as follows: First, the user covers the main frame 1 outside the mine, and then rotates the turntable body 14 to drive the adjusting screw 9 to rotate inside the threaded ring 10. The threaded transmission causes the two adjusting screws 9 to move synchronously towards the outer wall of the mine. At this time, the limiting rod 12 slides and guides within the connecting ring 13 to ensure that the limiting clamp 11 is stably close to the mine wall until the anti-slip pad 15 is tightly attached to the outer wall of the mine, completing the initial positioning and fixing of the main frame 1; then the positioning stake 18 is removed from the constraint ring 17 of the positioning seat 16 and driven... Once the pump enters the ground, a stable support structure is formed by the symmetrical arrangement of four positioning seats 16. After the main body of the pump 6 is started, slickwater is drawn in through the inlet pipe 7 and transported to the oil well through the outlet pipe 8. During this process, the elastic sliding connection of the rubber ring 19 allows the outlet pipe 8 to undergo flexible displacement with the vibration of the pump, avoiding fatigue fracture of the pipeline caused by rigid connection. At the same time, the composite spring 3 and composite rubber column 4 in the mounting seat 2 absorb the vibration and pressure change during the operation of the pump through elastic deformation, reducing stress concentration damage to the equipment and ensuring continuous and efficient injection of slickwater to improve the fracturing operation effect.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A variable viscosity slippery water injection device, characterized in that, include: Main frame (1); Mounting base (2), which is fixedly connected to the main frame (1), and a strip groove is provided in the mounting base (2). Multiple composite springs (3) and composite rubber columns (4) are fixedly connected in the strip groove. The other end of the multiple composite springs (3) and the multiple composite rubber columns (4) is fixedly connected to a mounting plate (5). The liquid pump body (6) is detachably connected to the mounting plate (5), and the input end and output end of the liquid pump body (6) are respectively connected to the inlet pipe (7) and the outlet pipe (8), and the outlet pipe (8) extends into the main frame (1) through the connection hole; A limiting component is disposed within the main frame (1) and is used to effectively limit the main frame (1) on the oil well. A positioning component is disposed on the outer wall of the main frame (1) and is used to fix and limit the main frame (1) in the use position.

2. The variable viscosity slippery water injection device according to claim 1, characterized in that: The limiting assembly includes two adjusting screws (9), both of which are threaded to the main frame (1) via threaded rings (10). The opposite ends of the two adjusting screws (9) are rotatably connected to limiting clamps (11), and the ends of the two limiting clamps (11) that are far apart from each other are fixedly connected to limiting rods (12). The other end of the limiting rods (12) is slidably connected to the main frame (1) via connecting rings (13).

3. The variable viscosity slippery water injection device according to claim 2, characterized in that: The two adjusting screws (9) are fixedly connected to the turntable body (14) at their far ends, and the two limiting clamps (11) are provided with anti-slip pads (15) at their opposite ends.

4. The variable viscosity slippery water injection device according to claim 1, characterized in that: The positioning component includes four positioning seats (16), which are symmetrically arranged on the outer wall of the main frame (1). The positioning seats (16) are provided with positioning holes, and a constraint ring (17) is provided in the positioning hole. A positioning stake (18) is vertically slidably connected in the constraint ring (17).

5. The variable viscosity slippery water injection device according to claim 1, characterized in that: The liquid outlet pipe (8) is vertically slidably connected to the main frame (1) via a rubber ring (19).

Images