Compaction device for sand control screen and production system

Abstract

The utility model provides a compaction device for a sand control screen and a production system. The compaction device for the sand control screen pipe comprises at least one compaction mold, the compaction mold comprises a first pressing mold and a second pressing mold which are oppositely arranged in the first direction, and an area for the sand control screen pipe to penetrate through is formed between the first pressing mold and the second pressing mold; the driving device is connected with the first pressing die and / or the second pressing die so as to drive the first pressing die to rotate in the second direction and drive the second pressing die to rotate in the third direction, and the second direction and the third direction are opposite to each other; the sand control screen pipe can penetrate through the area in the fourth direction under the action of friction force generated by the first pressing die and the second pressing die, a round through hole matched with the target outer diameter size of the sand control screen pipe is formed in the area, and the first direction and the fourth direction meet the perpendicular condition. According to the technical scheme, the dependence of traditional assembly on a large assembly gap can be avoided, and the rejection rate possibly caused by assembly difficulty is reduced.

Description

Technical Field

[0001] This application relates to the technical field of oilfield mechanical equipment manufacturing, and particularly to a compaction device and a production system for a sand control screen pipe. Background Art

[0002] A sand control screen pipe is an important downhole tool used for sand control in oil and gas wells or water wells, which is used to ensure the flow of well fluid while preventing sand grains in the formation from entering the wellbore, thereby protecting downhole equipment from damage.

[0003] The existing manufacturing process of the sand control screen pipe is to first wind the wire mesh around the inner sleeve to form a cylindrical structure, called a "wire mesh sleeve". The wire mesh is a metal woven mesh with certain filtering performance, and the inner sleeve is used to support the wire mesh and finally becomes the inner layer pipe of the sand control screen pipe. Then, the wire mesh and the inner sleeve are welded together by resistance welding along the generatrix direction of the wire mesh sleeve to enhance the bonding strength between the two. However, during the welding process, the ends of the wire mesh are prone to deformation and outward warping, which will cause difficulties in smoothly inserting the wire mesh sleeve into the outer sleeve during subsequent assembly. Especially when the outer diameter of the sand control screen pipe required by the customer is small, the diameter of the outer sleeve is not sufficient to provide enough clearance to accommodate the deformed ends of the wire mesh, which not only increases the assembly difficulty but also may cause damage to the sand control screen pipe during assembly, thus increasing the rejection rate.

[0004] Therefore, a compaction device for a sand control screen pipe is needed to solve at least the above problems. Summary of the Utility Model

[0005] The purpose of the embodiments of this application is to provide a compaction device for a sand control screen pipe to solve the problem of improving the assembly efficiency of the wire mesh sleeve and the outer sleeve and reducing the rejection of the sand control screen pipe caused by difficult assembly when the diameter of the outer sleeve is limited.

[0006] To solve the above technical problems, the embodiments of this application provide the following technical solutions:

[0007] A compaction device for a sand control screen pipe provided in the first aspect of this application includes: at least one compaction die, the compaction die includes a first pressing die and a second pressing die oppositely arranged along a first direction, and a region for the sand control screen pipe to pass through is formed between the first pressing die and the second pressing die; a driving device, the driving device is connected to the first pressing die and / or the second pressing die to drive the first pressing die to rotate along a second direction and the second pressing die to rotate along a third direction, and the second direction and the third direction are opposite to each other; wherein, the sand control screen pipe can pass through the region along a fourth direction under the action of the frictional force generated by the first pressing die and the second pressing die, and a circular through hole matching the target outer diameter size of the sand control screen pipe is provided in the region, and the first direction and the fourth direction satisfy the perpendicular condition.

[0008] In some embodiments of the present application, the first direction is the vertical direction, and the fourth direction is the horizontal direction; the position and size of the circular through-hole remain unchanged during the rotation of the first mold and the second mold.

[0009] In some embodiments of the present application, the first mold rotates around its first axis along the second direction. Each section of the first mold perpendicular to its first axis is circular, and the area size of each of its sections gradually increases from the center of the first mold to both sides along the direction of the first axis; the second mold has the same structure as the first mold.

[0010] In some embodiments of the present application, the second mold rotates around its second axis along the third direction. The second axis is parallel to the first axis, and the plane where the first axis and the second axis are located is perpendicular to the fourth direction; both ends of the first mold along the first axis are in contact connection with both ends of the second mold along the second axis.

[0011] In some embodiments of the present application, the compaction device for the sand control screen pipe further includes: a device main body for placing the sand control screen pipe; a support device disposed on the device main body, including a pair of support structures oppositely disposed along a fifth direction perpendicular to the first direction and the fourth direction respectively. The pair of support structures are located on both sides of the compaction mold, and the first mold and the second mold are respectively rotatably connected to the pair of support structures.

[0012] In some embodiments of the present application, the support structure includes a pair of first plate bodies and at least one second plate body. The first plate bodies and the second plate body are all disposed along the first direction. The pair of first plate bodies are connected to the device main body and are distributed on both sides of the second plate body along the fourth direction; the second plate body is respectively snap-connected to the pair of first plate bodies, and the first mold and the second mold are respectively rotatably connected to the second plate body.

[0013] In some embodiments of the present application, there are a pair of second plate bodies. The pair of second plate bodies are stacked along the first direction. The first mold and the second mold are respectively rotatably connected to the pair of second plate bodies; further includes: a fixing device including a pair of abutting components. Each abutting component corresponds to one of the support structures. The abutting component includes a driving part and an abutting part. The driving part can drive the abutting part to reciprocate along the first direction to abut or release the pair of second plate bodies.

[0014] In some embodiments of the present application, the driving device includes a driving motor and a first gear and a second gear that are meshed and connected. The first gear is connected to the first pressing die, and the second gear is connected to the second pressing die; the driving end of the driving motor is connected to the first gear and / or the second gear to drive the first gear and / or the second gear to rotate.

[0015] In some embodiments of the present application, the compaction device for a sand control screen pipe further includes: a lifting device, which is arranged on the device main body and has a supporting surface for carrying the sand control screen pipe, and the lifting device can control the supporting surface to reciprocate along a first direction.

[0016] The second aspect of the present application provides a production system, including the compaction device for a sand control screen pipe provided in the first aspect of the present application.

[0017] Compared with the prior art, the compaction device for a sand control screen pipe provided in the first aspect of the present application forms a circular through-hole area for the sand control screen pipe to pass through by arranging the first pressing die and the second pressing die relatively along the first direction. Through the connection of the driving device with the first pressing die and / or the second pressing die, the first pressing die and the second pressing die are respectively rotated relatively along the second direction and the third direction. By the opposite rotation in these two directions, during the rotation process, the sand control screen pipe can smoothly pass through the circular through-hole area along the fourth direction under the action of friction. Since the initial outer diameter of the sand control screen pipe is larger than the target outer diameter, when passing through the compaction area, the outer sleeve is extruded under the pressure of the pressing die and is tightly combined with the wire mesh sleeve, thereby achieving the compaction effect and reaching the target outer diameter size. The technical solution of the present application can avoid relying on a large assembly gap in the traditional assembly process, thus greatly simplifying the assembly steps, reducing the rejection rate that may be caused by inaccurate assembly, significantly reducing the production cost, and providing a larger operating space for the customer's downhole operation by precisely controlling the outer diameter of the sand control screen pipe, improving the operation efficiency.

[0018] The technical effects of the production system provided in the second aspect of the present application are the same as or similar to those of the compaction device for a sand control screen pipe provided in the first aspect of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present application will become readily understandable. In the drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0020] Figure 1 The structural schematic diagram of a sand control screen pipe in the prior art is shown;

[0021] Figure 2 The structural schematic diagram of a compaction device for a sand control screen pipe according to an exemplary embodiment of the present application is shown;

[0022] Figure 3 The front view of a compaction device for a sand control screen pipe according to an exemplary embodiment of the present application is shown;

[0023] Figure 4 is Figure 3 the side view of;

[0024] Figure 5 The front view of a compaction die in a compaction device for a sand control screen pipe according to an exemplary embodiment of the present application is shown;

[0025] Figure 6 is Figure 5 the side view of;

[0026] Figure 7 The structural schematic diagram of a support structure in a compaction device for a sand control screen pipe according to an exemplary embodiment of the present application is shown;

[0027] Figure 8 The state schematic diagram of a sand control screen pipe arranged on a compaction device for a sand control screen pipe according to an exemplary embodiment of the present application is shown;

[0028] Figure 9 The initial state schematic diagram and the state schematic diagram after being compacted of a sand control screen pipe according to an exemplary embodiment of the present application are shown.

[0029] Explanation of the reference numerals in the drawings:

[0030] 100, sand control screen pipe; 200, inner sleeve; 300, wire mesh; 400, outer sleeve;

[0031] 1, compaction die; 101, first pressing die; 102, second pressing die; 103, first axis; 104, second axis; 105, circular through hole; 2, driving device; 201, driving motor; 202, first gear; 203, second gear; 3, device main body; 4, supporting device; 401, support structure; 402, first plate body; 403, second plate body; 5, fixing device; 501, abutting component; 502, driving part; 503, abutting part; 504, connecting plate; 6, lifting device; 601, supporting wheel; 602, lifting mechanism; 7, control device. Detailed implementation manners

[0032] Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present application can be more thoroughly understood and the scope of the present application can be fully conveyed to those skilled in the art.

[0033] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should have the ordinary meanings understood by those skilled in the art to which the present application belongs.

[0034] The sand control screen pipe 100 is used to ensure the flow of well fluid while preventing sand grains in the formation from entering the wellbore. As Figure 1 shown, it includes an inner sleeve 200, a wire mesh 300, and an outer sleeve 400 arranged in sequence from the inside out. In the production process of the existing sand control screen pipe 100, the wire mesh 300 is wound around the inner sleeve 200 to form a wire mesh sleeve and fixed by resistance welding. However, during the welding process, the end of the wire mesh 300 is prone to deformation and warping, which requires the outer sleeve 400 to have a larger diameter to leave enough clearance to ensure that the wire mesh sleeve can be smoothly assembled into the outer sleeve 400. When the customer needs a sand control screen pipe 100 with a smaller outer diameter, the limited clearance increases the assembly difficulty. It may be very difficult to insert the wire mesh sleeve into the outer sleeve 400, and sometimes it may even get stuck after inserting a part, making it impossible to move forward or withdraw, resulting in the scrapping of the entire sand control screen pipe 100. Moreover, the efficiency of this production process is relatively low. It takes about 40 minutes to complete the resistance welding of a wire mesh sleeve. The welding points of the resistance welding are tightly compacted, which also reduces the effective flow area of the sand control screen pipe 100.

[0035] Therefore, the compaction device for the sand control screen pipe provided by the present application changes the process of assembling the sand control screen pipe 100. The wire mesh 300 is wound around the inner sleeve 200 to form a wire mesh sleeve and simply fixed by spot welding process. Then, the wire mesh sleeve is directly assembled with the outer sleeve 400 to form the sand control screen pipe 100. Subsequently, the compaction device for the sand control screen pipe is used to compact it into a whole, thus eliminating the step of resistance welding. Since the wire mesh sleeve does not deform before assembly, there is no need to reserve a large assembly clearance, making the assembly process smoother. This not only avoids the scrapping of the sand control screen pipe 100 but also can meet the precise requirements of the customer for the outer diameter of the sand control screen pipe 100.

[0036] Embodiment 1

[0037] In order to solve the problems existing in the prior art, an embodiment of the present application provides a compaction device for a sand control screen pipe, as Figures 2 to 9As shown in the figure, it includes: at least one compaction die 1, the compaction die 1 includes a first die 101 and a second die 102 that are oppositely arranged along a first direction, and a region for the sand control screen pipe 100 to pass through is formed between the first die 101 and the second die 102; a driving device 2, the driving device 2 is connected to the first die 101 and / or the second die 102 to drive the first die 101 to rotate along a second direction and the second die 102 to rotate along a third direction, and the second direction and the third direction are opposite to each other; wherein, the sand control screen pipe 100 can pass through the region along a fourth direction under the action of the frictional force generated by the first die 101 and the second die 102, and a circular through hole 105 matching the target outer diameter size of the sand control screen pipe 100 is provided in the region, and the first direction and the fourth direction meet the perpendicular condition.

[0038] The first die 101 and the second die 102 are oppositely arranged along the first direction, and a region for the sand control screen pipe 100 to pass through is formed between them. The contact surface between the first die 101 and the second die 102 forms a complete circular through hole 105, and the diameter of the through hole matches the target outer diameter size of the sand control screen pipe 100. The mesh cloth 300 can be pre-assembled with the inner sleeve 200 into a mesh sleeve by spot welding process first, and then the assembled mesh sleeve is placed into the outer sleeve 400 to form the sand control screen pipe 100. Since the initial outer diameter size of the sand control screen pipe 100 is larger than the target outer diameter size, after passing through this region, the outer sleeve 400 of the sand control screen pipe 100 will be extruded under the pressure of the compaction die 1 and compacted with the mesh sleeve, so as to reach the required target outer diameter size. Among them, if the target outer diameter of the sand control screen pipe 100 is d, it is advisable that the target outer diameter d0 of the sand control screen pipe 100 is about 3 mm larger than d. If d0 is too large, it is easy to cause the outer sleeve 400 of the sand control screen pipe 100 to be crushed and deformed.

[0039] The driving device 2 is connected to the first pressing die 101 and / or the second pressing die 102 for driving the rotational movement of the pressing die. The driving device 2 can be an electric motor or other types of driving mechanisms. The driving device 2 is capable of driving the first pressing die 101 and the second pressing die 102 to rotate along the second direction and the third direction respectively, and these two directions are opposite to each other. For example, the first pressing die 101 rotates in the clockwise direction (the second direction), while the second pressing die 102 rotates in the counterclockwise direction (the third direction). The driving device 2 can be connected to the first pressing die 101 and the second pressing die 102 through appropriate transmission mechanisms (such as gears, belts, etc.) to ensure that the rotational directions of the two are opposite and synchronous. Since the outer surface of the sand control screen pipe 100 can contact the first pressing die 101 and the second pressing die 102, during the rotation of the first pressing die 101 and the second pressing die 102, the sand control screen pipe 100 will interact with the frictional forces generated by the first pressing die 101 and the second pressing die 102. The moving direction of each point of the first pressing die 101 and the second pressing die 102 located in the circular through-hole 105 formed by them is the same as the fourth direction. Therefore, driven by the frictional force, the sand control screen pipe 100 can move smoothly along the fourth direction. And since the first direction and the fourth direction meet the perpendicular condition, this ensures that the entire sand control screen pipe 100 can pass through the circular through-hole 105 formed by the first pressing die 101 and the second pressing die 102, and its path is straight and unobstructed. Thus, during the process of the outer sleeve 400 of the sand control screen pipe 100 and the wire mesh sleeve passing through the compaction die 1, they can be tightly assembled together, achieving a firm and uniform compaction between the outer sleeve 400 and the wire mesh sleeve, and its function can be used normally, such as Figure 9 shown, thus completing the structural integration and strengthening.

[0040] The compaction device for the sand control screen pipe provided by the embodiment of the present application tightly squeezes the inner sleeve 200, the wire mesh 300, and the outer sleeve 400 together, avoiding the looseness of the wire mesh 300 while ensuring the use function of the sand control screen pipe 100. By directly compacting the outer sleeve 400 of the sand control screen pipe 100 and the wire mesh sleeve through the first pressing die 101 and the second pressing die 102, it avoids the dependence on a large assembly gap in the traditional assembly process, thus greatly simplifying the assembly steps, reducing the rejection rate that may be caused by inaccurate assembly, significantly reducing the production cost, and by being able to precisely control the outer diameter of the sand control screen pipe 100, it can provide a larger operating space for the customer's downhole operation and improve the operation efficiency.

[0041] In some embodiments, the first direction is the vertical direction, and the fourth direction is the horizontal direction; the position and size of the circular through-hole 105 remain unchanged during the rotation of the first pressing die 101 and the second pressing die 102.

[0042] The first die 101 and the second die 102 are arranged along the vertical direction (the first direction). When the sand control screen pipe 100 passes through the area between the first die 101 and the second die 102, under the action of the frictional force generated by these two dies, the sand control screen pipe 100 will move along the horizontal direction (the fourth direction). This enables the compaction force to be evenly distributed over the entire circumference of the sand control screen pipe 100, thereby improving the uniformity of compaction and the overall quality of the screen pipe.

[0043] During the compaction process, the first die 101 rotates in the clockwise direction (the second direction), while the second die 102 rotates in the counterclockwise direction (the third direction). During the entire rotation process, the position and size of the circular through-hole 105 remain constant and do not change due to the rotation of the dies. This ensures the stable transmission of the sand control screen pipe 100 in the horizontal direction, guarantees the outer diameter accuracy during the entire compaction process, and reduces dimensional deviation. Since the size of the circular through-hole 105 remains fixed, the sand control screen pipe 100 can be compacted on a continuous production line.

[0044] In some embodiments, as Figure 5 and Figure 6 shown, the first die 101 rotates around its first axis 103 in the second direction. Each cross-section of the first die 101 perpendicular to its first axis 103 is circular, and the area dimensions of its respective cross-sections gradually increase towards both sides along the direction of the first axis 103 with the center of the first die 101 as the initial position; the second die 102 has the same structure as the first die 101.

[0045] The first die 101 can rotate around its first axis 103, either in the clockwise or counterclockwise direction. Each cross-section of the first die 101 perpendicular to the first axis 103 is circular, and the area of these cross-sections gradually increases from the center along the direction of the first axis 103 towards both sides, forming a shape similar to a hyperbolic paraboloid, such as an hourglass shape. The projection of the first die 101 on the horizontal and vertical planes is the shape remaining after cutting off a semi-circle from each of the two opposite sides of a rectangle. The second die 102 has the same structure as the first die 101 and also rotates around its own axis, and the area of its circular cross-section also increases from the center towards both sides. When the first die 101 and the second die 102 are arranged opposite to each other in the vertical direction, a circular through-hole 105 is formed between them, and during the synchronous rotation of the two dies, the size and position of this circular through-hole 105 remain unchanged. This ensures the stable transmission of the sand control screen pipe 100 in the horizontal direction, guarantees the outer diameter accuracy during the entire compaction process, and reduces dimensional deviation.

[0046] Given that both the first die 101 and the second die 102 adopt a shape similar to a hyperbolic paraboloid, the projection of the spatial region formed between them in the vertical direction presents a series of continuous circular patterns. The diameters of these circles are larger than the initial outer diameter size of the sand control screen pipe 100. Therefore, when one end of the sand control screen pipe 100 contacts the surfaces of the first die 101 and the second die 102 before the sand control screen pipe 100 undergoes the compaction process, an inclined angle will be formed between the curved surfaces of these two dies and the cylindrical outer surface of the sand control screen pipe 100. As the first die 101 and the second die 102 start to rotate, the parts of them in contact with the surface of the sand control screen pipe 100 will generate frictional forces. Under the action of the frictional forces, the sand control screen pipe 100 will be gradually driven to pass through the die device, and thus undergo a uniform and effective compaction process.

[0047] In some embodiments, the second die 102 rotates around its second axis 104 in a third direction. The second axis 104 is arranged parallel to the first axis 103, and the plane where the first axis 103 and the second axis 104 are located is perpendicular to the fourth direction; both ends of the first die 101 in the direction of the first axis 103 are in contact connection with both ends of the second die 102 in the direction of the second axis 104.

[0048] The second die 102 rotates around its second axis 104. The second axis 104 remains parallel to the first axis 103 of the first die 101, and the plane where the first axis 103 and the second axis 104 are located is perpendicular to the moving direction (the fourth direction) of the sand control screen pipe 100, ensuring that the plane where the circular through-hole 105 is located is perpendicular to the moving direction of the sand control screen pipe 100. In this way, when the sand control screen pipe 100 moves horizontally, it can be uniformly compacted by the compaction die 1 in the vertical direction.

[0049] The first die 101 and the second die 102 are in contact connection at both ends in their respective axis directions. This makes the two dies contact each other during the rotation process and jointly form a complete circular structure. This contact not only reduces vibration and deviation but also ensures that the size of the circular through-hole 105 remains stable, thereby improving the compaction accuracy. This uniform compaction force ensures that when the sand control screen pipe 100 passes through the compaction area, each point can receive a uniform pressure distribution, which helps to maintain the consistency of the outer diameter size of the sand control screen pipe 100, and thus improves the overall quality of the product.

[0050] In some embodiments, such as Figure 3As shown, the compaction device for a sand control screen pipe further includes: a device main body 3 for placing the sand control screen pipe 100; a support device 4 disposed on the device main body 3, including a pair of support structures 401 oppositely arranged along a fifth direction perpendicular to the first direction and the fourth direction respectively. The pair of support structures 401 are located on both sides of the compaction die 1, and the first pressing die 101 and the second pressing die 102 are respectively rotatably connected to the pair of support structures 401.

[0051] The device main body 3 is used to carry and place the sand control screen pipe 100, providing a stable platform for the compaction process. The device main body 3 can be a frame structure to ensure that the sand control screen pipe 100 can move stably during the compaction process. The support device 4 is installed on the device main body 3 and consists of a pair of support structures 401 oppositely arranged along the fifth direction (perpendicular to the first direction and the fourth direction). The pair of support structures 401 are located on both sides of the compaction die 1, providing a firm support for the compaction die 1. The first pressing die 101 and the second pressing die 102 can be connected to the pair of support structures 401 through a rotating shaft, and both ends of the rotating shaft are rotatably connected to the support structures 401 on both sides by means of structures such as bearings. One pressing die is fixedly connected to one rotating shaft, and the driving device 2 can drive the pressing die to rotate by driving the rotating shaft to rotate. Through the support device 4, the two pressing dies can be arranged vertically and perform stable rotational movement on the support structures 401.

[0052] By installing the support device 4 on the device main body 3 and connecting the pressing die to the support structure 401 in a rotatable manner, the stability of the entire compaction die 1 is improved, the vibration during the compaction process is reduced, and the precise positions of the first pressing die 101 and the second pressing die 102 during the compaction process are ensured, maintaining the size and position of the circular through-hole 105 unchanged, thereby improving the compaction precision.

[0053] In some embodiments, the support structure 401 includes a pair of first plate bodies 402 and at least one second plate body 403. Both the first plate bodies 402 and the second plate body 403 are arranged along the first direction. The pair of first plate bodies 402 are connected to the device main body 3 and are distributed on both sides of the second plate body 403 along the fourth direction. The second plate body 403 is respectively clamped to the pair of first plate bodies 402, and the first pressing die 101 and the second pressing die 102 are respectively rotatably connected to the second plate body 403.

[0054] The support structure 401 is composed of a pair of first plate bodies 402 and at least one second plate body 403, and these plate bodies are all arranged along the first direction (vertical direction). The pair of first plate bodies 402 can be detachably connected to the device main body 3, for example, fixed by bolts. The pair of first plate bodies 402 are distributed on both sides of the second plate body 403 along the fourth direction (horizontal direction). The opposite sides of the second plate body 403 are respectively clamped with the pair of first plate bodies 402, ensuring the stable position of the second plate body 403 between the first plate bodies 402. Specifically, as Figure 7 shown, the side edges of the pair of first plate bodies 402 facing the second plate body 403 are provided with rectangular protruding structures, and the side edges of the second plate body 403 for connecting with the first plate bodies 402 are provided with groove guide structures. Through the groove guide and the protruding structures of the first plate bodies 402, the second plate body 403 can slide vertically between the first plate bodies 402, realizing the detachable connection with the first plate bodies 402. Since the first die 101 and the second die 102 are rotatably connected to the second plate body 403, the disassembly and replacement operations of the first die 101 and the second die 102 can be conveniently carried out.

[0055] In some embodiments, as Figure 4 shown, the second plate bodies 403 are a pair, and the pair of second plate bodies 403 are stacked along the first direction. The first die 101 and the second die 102 are respectively rotatably connected to the pair of second plate bodies 403; further included is a fixing device 5. The fixing device 5 includes a pair of abutting components 501. Each abutting component 501 is provided corresponding to one support structure 401. The abutting component 501 includes a driving part 502 and an abutting part 503. The driving part 502 can drive the abutting part 503 to reciprocate along the first direction to abut or release the pair of second plate bodies 403.

[0056] The second plate bodies 403 are a pair, and they are stacked along the first direction (vertical direction), which enables the first die 101 and the second die 102 to be stably arranged relatively. Since the first die 101 and the second die 102 are respectively rotatably connected to the pair of second plate bodies 403, the first die 101 or the second die 102 can be replaced separately without replacing the entire compaction die. Through the detachable setting of the pair of second plate bodies 403, different specifications of the first die 101 and the second die 102 can also be replaced by replacing different second plate bodies 403, changing the diameter of the circular through hole 105 formed between the first die 101 and the second die 102, so as to be applicable to the compaction of sand control screens 100 with different diameter sizes.

[0057] The fixing device 5 includes a pair of abutting components 501. The pair of abutting components 501 are arranged oppositely along the fifth direction, and each abutting component 501 is arranged corresponding to the second plate body 403 in a support structure 401. The abutting component 501 is composed of a driving part 502 and an abutting part 503. The driving part 502 is responsible for driving the abutting part 503 to reciprocate along the first direction (vertical direction), so as to realize the abutment or release of a pair of stacked second plate bodies 403. During the operation, when the first pressing die 101 or the second pressing die 102 needs to be replaced, the driving part 502 can be operated to make the abutting component 501 release a pair of second plate bodies 403, so as to expose the pressing die to be replaced. After the replacement is completed, the driving part 502 is used to make the abutting component 501 abut a pair of stacked second plate bodies 403, so as to ensure stable support for the first pressing die 101 or the second pressing die 102 during rotation and prevent the compaction effect from being affected by the offset of the plate body.

[0058] In some embodiments, as Figure 2 shown, the fixing device 5 includes a connecting plate 504. The connecting plate 504 is arranged along the horizontal direction and can be detachably connected to each first plate body 402 in the support structure 401, for example, by using bolts. Through the connection of the connecting plate 504 with each first plate body 402, the four first plate bodies 402 can be connected into one body, thereby enhancing the firmness of the support device 4. The abutting component 501 includes a lead screw and a driving wheel. The lead screw has a first end and a second end arranged oppositely. The first end is fixedly connected to the driving wheel, and the driving wheel serves as the driving part 502, while the second end serves as the abutting part 503 and faces the second plate body 403. A threaded hole is provided on the connecting plate 504, and the lead screw can pass through the threaded hole and be connected to the connecting plate 504. By rotating the driving wheel, the lead screw can be rotated, so as to adjust the vertical up and down movement of the abutting part 503 to realize the abutment or release of a pair of second plate bodies 403. A concave area corresponding to the abutting part 503 can be provided at the top of the second plate body 403 located above. When the abutting part 503 abuts a pair of second plate bodies 403, the concave area can limit the displacement of the abutting part 503 and ensure its stability during the abutment process.

[0059] In some embodiments, as Figure 2 shown, the driving device 2 includes a driving motor 201 and a first gear 202 and a second gear 203 connected in mesh. The first gear 202 is connected to the first pressing die 101, and the second gear 203 is connected to the second pressing die 102; the driving end of the driving motor 201 is connected to the first gear 202 and / or the second gear 203 to drive the first gear 202 and / or the second gear 203 to rotate.

[0060] The driving device 2 includes a driving motor 201 which can be placed on the device main body 3 and is used to provide a power source. The driving device 2 further includes a first gear 202 and a second gear 203 which are meshed and connected. The first gear 202 is coaxially connected with the first die 101, and the pitch circle diameter of the first gear 202 is equal to the circular diameter of the outermost edge position of the first die 101. While the second gear 203 is coaxially connected with the second die 102, and the pitch circle diameter of the second gear 203 is equal to the circular diameter of the outermost edge position of the second die 102.

[0061] When the driving end of the driving motor 201 is connected to the first gear 202, the first gear 202 serves as the driving gear, and the second gear 203 serves as the driven gear to transmit power. The connection between the driving motor 201 and the gears can be achieved through direct connection or through transmission devices such as chains and belts. When the driving motor 201 starts, the rotation of the first gear 202 and the second gear 203 will cause the corresponding dies to rotate accordingly. Since the first gear 202 and the second gear 203 are meshed and connected, they can rotate in opposite directions respectively, thereby realizing the synchronous rotation of the first die 101 and the second die 102. The synchronous rotation ensures that the sand control screen pipe 100 can obtain a uniform pressure distribution when passing through the area. Through the meshed connection of the driving motor 201 and the gears, the driving device 2 can not only provide stable power, but also accurately control the rotation direction and speed of the dies, ensuring that the sand control screen pipe 100 can obtain a uniform pressure distribution when passing through the area.

[0062] And by connecting the first die 101 and the second die 102 with the first gear 202 and the second gear 203 respectively, when replacing the first die 101 and the second die 102 with different specifications and sizes, the specifications of the first gear 202 and the second gear 203 can be synchronously replaced, which is convenient to operate and improves production efficiency.

[0063] In some embodiments, as Figure 2 shown, the compaction device for the sand control screen pipe further includes: a lifting device 6. The lifting device 6 is arranged on the device main body 3 and has a supporting surface for carrying the sand control screen pipe 100. The lifting device 6 can control the reciprocating movement of the supporting surface along the first direction.

[0064] The lifting device 6 is arranged on the device main body 3 and has a supporting surface for carrying the sand control screen pipe 100, so that the sand control screen pipe 100 can be placed on this supporting surface. The lifting device 6 can control the reciprocating movement of the supporting surface along the first direction (vertical direction). When it is necessary to replace the sand control screen pipe 100 with a different diameter size from the previous process, the height of the supporting surface is adjusted by the lifting device 6, so that the center of the sand control screen pipe 100 corresponds to the center of the circular through hole 105 formed between the first pressing die 101 and the second pressing die 102, thereby enabling the compaction operation of sand control screen pipes 100 with different specifications and sizes, and improving the versatility of the device. Moreover, by supporting the sand control screen pipe 100 with the supporting surface, it is possible to prevent the end of the sand control screen pipe 100 from lowering under the action of its own weight during the compaction process, and prevent the sand control screen pipe 100 from deforming during the compaction process, thus ensuring the compaction effect of the sand control screen pipe 100.

[0065] In some embodiments, the lifting device 6 includes a plurality of support wheels 601 arranged at intervals in sequence along the fourth direction (horizontal direction). Each support wheel 601 can adopt a V-shaped wheel structure to adapt to the outer surface of the sand control screen pipe 100. The arc surface of the V-shaped wheel is adapted to the outer surface of the sand control screen pipe 100, and the plurality of support wheels 601 together form a supporting surface. When the sand control screen pipe 100 moves along the fourth direction, the support wheels 601 can support the sand control screen pipe 100 and also adapt to the rotation of the sand control screen pipe 100, thereby avoiding scratching the outer surface of the sand control screen pipe 100. The lifting device 6 further includes a plurality of lifting mechanisms 602, and each lifting mechanism 602 is drivingly connected to a support wheel 601. The lifting mechanism 602 can drive the support wheel 601 to move up and down along the first direction (vertical direction), thereby adjusting the height of the supporting surface. The support wheel 601 is rotatably connected to the lifting mechanism 602, so that the support wheel 601 can rotate around its axis to adapt to the movement of the sand control screen pipe 100. The lifting mechanism 602 can be an existing structure such as a linear drive mechanism or a lead screw drive mechanism, and can be manually controlled or automatically controlled. By connecting each lifting mechanism 602 to a support wheel 601, the height adjustment of each support wheel 601 can be controlled respectively, so as to achieve precise adjustment of the height of the sand control screen pipe 100.

[0066] In some embodiments, the compaction device for the sand control screen pipe further includes a control device 7. The control device 7 is arranged on the device main body 3 and can be close to the operation position of the operator for easy operation. The control device 7 is electrically connected to the drive device 2 and the lifting device 6 respectively. The control device 7 is provided with an operation interface, and the operation interface can be a button, a touch screen, a knob or other interaction devices. The operator can control the start and stop of the drive device 2 and the lifting device 6 through this interface. Through the control device 7, the operator can easily control the start and stop of the drive device 2 and the lifting device 6, simplify the operation process, and improve the operation convenience.

[0067] In some embodiments, there may be multiple compaction molds 1, and the multiple compaction molds 1 are arranged at intervals in the horizontal direction in sequence. The multiple compaction molds 1 can be connected together by a connecting shaft, so that one driving device 2 can control all the compaction molds 1 to work synchronously. Each compaction mold 1 is used for the compaction operation of a sand control screen pipe 100. By arranging multiple compaction molds 1, the compaction operations of multiple sand control screen pipes 100 can be carried out simultaneously, greatly improving the production efficiency.

[0068] The working process of the compaction device for the sand control screen pipe provided by the embodiment of the present application is as follows:

[0069] First, through the spot welding process, the mesh cloth 300 and the inner sleeve 200 are pre-assembled into a mesh sleeve. Subsequently, the pre-assembled mesh sleeve is properly placed into the outer sleeve 400, thereby forming a complete structure of the sand control screen pipe 100. Then, the sand control screen pipe 100 is placed on the support surface of the lifting device 6, as Figure 8 shown, and by adjusting the height of the lifting device 6, it is ensured that the central axis of the sand control screen pipe 100 is precisely aligned with the center line of the circular through hole 105 formed by the first pressing die 101 and the second pressing die 102 in the compaction mold 1. Then, one end of the sand control screen pipe 100 is brought into contact with the surfaces of the first pressing die 101 and the second pressing die 102, and the driving motor 201 is started and rotated forward to drive the pressing die to start rotating. Under the rotational action of the pressing die, the sand control screen pipe 100 is smoothly moved from side A to side B of the compaction mold 1 under the drive of friction. During this process, the mesh sleeve and the outer sleeve 400 are tightly combined under the action of the pressing die, forming a uniform and structurally firm sand control screen pipe 100. After the compaction on one side is completed, the driving motor 201 is controlled to reverse, and at the same time, the sand control screen pipe 100 is rotated 90° along its axial direction, so that it moves back from side B to side A in the reverse direction. This step ensures that every point on the entire length of the sand control screen pipe 100 is uniformly and thoroughly compacted, thereby achieving the best compaction effect. Thus, the composite compaction process of one sand control screen pipe 100 is completed.

[0070] The compaction device for the sand control screen pipe provided by the embodiment of the present application realizes the uniform compaction of the outer sleeve 400 and the mesh sleeve of the sand control screen pipe 100 through the rotational movement of the first pressing die 101 and the second pressing die 102 and the friction with the surface of the sand control screen pipe 100, forming a firm integral structure. It not only avoids the dependence on a large assembly gap in the traditional assembly process, reduces the rejection rate that may be caused by inaccurate assembly, effectively reduces the production cost, but also greatly simplifies the assembly steps, significantly shortens the production cycle, and improves the production efficiency. By being able to precisely control the outer diameter of the sand control screen pipe 100, it provides a larger operating space for the downhole operations of customers and improves the operation efficiency.

[0071] Embodiment 2

[0072] An embodiment of the present application provides a production system, including a compaction device for a sand control screen pipe provided in Embodiment 1 of the present application.

[0073] The production system further includes a pre-assembly area for the sand control screen pipe 100. In this area, the wire mesh sleeve is directly assembled with the outer sleeve 400 to form a screen pipe. This can be completed by automated or semi-automated equipment to ensure pre-assembly accuracy and efficiency. A compaction device is provided downstream of the pre-assembly area for the sand control screen pipe 100, and the compaction device uses the compaction device for the sand control screen pipe 100 provided in Embodiment 1 of the present application. After the pre-assembly of the sand control screen pipe 100 is completed, it is fed into the compaction device.

[0074] The production system further includes a conveying device and a detection device. The conveying device is used to convey the sand control screen pipe 100 from the pre-assembly area to the compaction device, and convey the finished sand control screen pipe 100 to the next process or storage area after compaction. The detection device is used to detect the size and compaction quality of the screen pipe before and after compaction to ensure that the product meets the specification requirements.

[0075] Through the integrated and automated production system, the efficient production of the sand control screen pipe 100 is realized. From the assembly of the wire mesh sleeve and the outer sleeve 400 to the compaction into one body, the whole process is fast and continuous. The production system provided by the present application can accurately control the outer diameter and structural stability of the sand control screen pipe 100 by using the compaction device for the sand control screen pipe provided in Embodiment 1 of the present application, reduce the defects caused by improper assembly, and avoid the cost waste caused by large assembly gaps and scrapping problems. By accurately controlling the outer diameter of the screen pipe, not only a larger downhole operation space is provided for customers, but also the performance of the sand control screen pipe 100 is ensured, meeting the actual needs of customers.

[0076] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claimed rights.

Claims

1. A compaction device for a sand control screen, characterized in that: include: at least one compaction mold, the compaction mold comprising a first compaction mold and a second compaction mold disposed opposite to each other in a first direction, wherein a region for a sand control screen to pass through is formed between the first compaction mold and the second compaction mold; A driving device, the driving device is connected to the first die and / or the second die to drive the first die to rotate along a second direction and the second die to rotate along a third direction, wherein the second direction and the third direction are opposite to each other; The sand control screen can pass through the region along a fourth direction under the action of the friction force generated by the first die and the second die, and the region has a circular through hole matching the target outer diameter of the sand control screen, and the first direction and the fourth direction meet the vertical condition.

2. The compacting device for sand control screen according to claim 1, characterized in that: The first direction is a vertical direction, and the fourth direction is a horizontal direction; The position and size of the circular through hole remain unchanged during the rotation of the first die and the second die.

3. The compacting device for sand control screen according to claim 2, characterized in that: The first die rotates around its first axis along the second direction, each section of the first die along the direction perpendicular to the first axis is circular, and the area size of each section gradually increases toward both sides along the direction of the first axis with the center of the first die as the initial position; The second die has the same structure as the first die.

4. The compacting device for sand control screen according to claim 3, characterized in that: The second die rotates around its second axis along the third direction, the second axis is arranged parallel to the first axis, and the plane where the first axis and the second axis are located is perpendicular to the fourth direction; Both ends of the first die along the first axis direction are in contact with and connected to both ends of the second die along the second axis direction.

5. The compacting device for sand control screen according to claim 1, characterized in that: Also includes: A device body, wherein the device body is used to place the sand control screen; A supporting device is arranged on the device body, and includes a pair of supporting structures arranged relatively along a fifth direction which is respectively perpendicular to the first direction and the fourth direction, the pair of supporting structures are located on both sides of the compaction mold, and the first mold and the second mold are rotatably connected to the pair of supporting structures respectively.

6. The compacting device for sand control screen according to claim 5, characterized in that: The supporting structure includes a pair of first plates and at least one second plate, the first plates and the second plates are both arranged along a first direction, and the pair of first plates are connected to the device body and distributed on both sides of the second plate along the fourth direction; The second plate body is respectively clamped with a pair of the first plate bodies, and the first pressing die and the second pressing die are respectively rotatably connected with the second plate bodies.

7. The compacting device for sand control screen according to claim 6, characterized in that: The second plate bodies are a pair, the pair of the second plate bodies are stacked along the first direction, and the first pressing die and the second pressing die are rotatably connected to the pair of the second plate bodies respectively; Also includes: A fixing device, wherein the fixing device comprises a pair of abutment components, each of the abutment components corresponds to one of the supporting structures, and the abutment components comprise a driving portion and an abutment portion, wherein the driving portion can drive the abutment portion to reciprocate along a first direction to abut or release a pair of the second plates.

8. The compacting device for sand control screen according to claim 1, characterized in that: The driving device comprises a driving motor and a first gear and a second gear meshingly connected, the first gear is connected to the first die, and the second gear is connected to the second die; The driving end of the driving motor is connected to the first gear and / or the second gear to drive the first gear and / or the second gear to rotate.

9. The compacting device for sand control screen according to claim 5, characterized in that: Also includes: A lifting device is arranged on the device body and has a supporting surface for carrying the sand control screen pipe. The lifting device can control the supporting surface to reciprocate along a first direction.

10. A production system, characterized in that: The invention comprises a compacting device for a sand control screen according to any one of claims 1 to 9.

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