Slip machining device

Abstract

The invention provides a slip machining device which comprises a mandrel, an elastic supporting assembly arranged on the outer surface of the mandrel, a first pressing plate and a second pressing plate, the outer surface of the mandrel is sleeved with the first pressing plate and the second pressing plate, a first clamping groove and a second clamping groove are formed in the first pressing plate and the second pressing plate respectively, and the two ends of a slip are clamped in the first clamping groove and the second clamping groove respectively. The end, away from the mandrel, of the elastic supporting assembly abuts against and makes contact with the surface of the slip. According to the slip machining device, enough supporting force can be provided through the first pressing plate, the second pressing plate and the elastic supporting assembly, vibration reduction performance can be provided for the slip through the elastic supporting assembly, and therefore the slip has good stability in the machining process, the slip is prevented from falling off from the loading mechanism, and the machining efficiency is improved. The workpiece precision and the machining efficiency are improved.

Description

Technical Field

[0001] The invention relates to the field of oil and gas well cementing tool processing and manufacturing, and in particular to a slip processing device. Background Art

[0002] The liner hanger is an important cementing tool, which is mainly used to fix the liner underground to ensure the smooth progress of drilling operations. The liner hanger is composed of multiple parts. The slips have the greatest impact on the function and are the most complicated to process and manufacture. The processing involves precision turning and milling processes, which require high precision and take a long time to process. In order to adapt to the "three highs" wells and complex oil and gas wells, the slips of the liner hanger have been improved and designed, and the length has gradually increased. If the existing technology is used to process the slips, the supporting performance is insufficient and there is no vibration reduction performance. During the processing, the stability is poor, the slips are easy to fall from the loading mechanism, the workpiece precision and efficiency are low, and the rework rate is high. Summary of the invention

[0003] One object of the present invention is to propose a cava processing device and a variable diameter elastic straightening mechanism, so that sufficient supporting force can be provided through a first pressure plate, a second pressure plate and an elastic support assembly, and the elastic support assembly can provide vibration reduction performance for the cava, so that the cava has better stability during the processing process, preventing the cava from falling from the loading mechanism, and improving the workpiece accuracy and processing efficiency.

[0004] According to the present invention, there is provided a cava processing device, comprising: a core shaft, an elastic support assembly arranged on the outer surface of the core shaft, and a first pressure plate and a second pressure plate sleeved on the outer surface of the core shaft, the first pressure plate and the second pressure plate are respectively provided with a first card slot and a second card slot, the two ends of the cava are respectively engaged in the first card slot and the second card slot, and the end of the elastic support assembly away from the core shaft is pressed and contacted with the surface of the cava.

[0005] In a preferred embodiment, the elastic support assembly includes: a support portion and a shockproof sleeve disposed on the top of the support portion, the shockproof sleeve is in pressure contact with the surface of the slip, and the bottom of the support portion is connected to the outer surface of the core shaft.

[0006] In a preferred embodiment, the support portion is a threaded member, a screw hole is formed on the outer surface of the core shaft, and the bottom of the support portion is threadedly connected to the screw hole.

[0007] In a preferred embodiment, the shockproof sleeve is made of rubber material.

[0008] In a preferred embodiment, a bearing plate is disposed on a side of the second pressing plate close to the first pressing plate, and the bearing plate is sleeved on the outer surface of the core shaft and connected to the second pressing plate.

[0009] In a preferred embodiment, a plurality of recesses are evenly arranged on the outer periphery of the bearing plate, and the recesses abut against the surface of the slips.

[0010] In a preferred embodiment, the bearing plate and the second pressing plate are connected by countersunk bolts.

[0011] In a preferred embodiment, the first pressing plate and the second pressing plate are respectively provided with a plurality of first card slots and second card slots evenly disposed along the outer circumference, and the first card slots are disposed opposite to the second card slots.

[0012] In a preferred embodiment, a notch is provided between adjacent first card slots, and a notch is provided between adjacent second card slots.

[0013] In a preferred embodiment, a plurality of groups of the elastic support components are evenly arranged along the peripheral direction on the outer surface of the core shaft, and each group of the elastic support components includes a plurality of the elastic support components evenly arranged along the axial direction of the core shaft.

[0014] The present invention has at least the following technical effects:

[0015] According to the present invention, a core shaft, an elastic support assembly arranged on the outer surface of the core shaft, and a first pressing plate and a second pressing plate sleeved on the outer surface of the core shaft are provided. The first pressing plate and the second pressing plate are respectively provided with a first clamping groove and a second clamping groove, and the two ends of the slip are respectively engaged in the first clamping groove and the second clamping groove, and the end of the elastic support assembly away from the core shaft is pressed and contacted with the surface of the slip. On the one hand, sufficient supporting force can be provided by the first pressing plate, the second pressing plate and the elastic support assembly, and on the other hand, the elastic support assembly can provide vibration reduction performance for the slip, so that the slip has better stability during the processing process, and the slip is prevented from falling from the loading mechanism, thereby improving the workpiece precision and processing efficiency.

[0016] According to the present invention, the support part adopts a threaded part, a screw hole is opened on the outer surface of the core shaft, and the bottom of the support part is threadedly connected to the screw hole, so that by screwing the support part in different directions, the height of the support part extending out of the outer surface of the core shaft can be adjusted, so that the shock-proof sleeve sleeved on the top end is pressed and contacted with the surface of the cava.

[0017] According to the present invention, a plurality of recesses are evenly arranged on the outer circumference of the bearing plate, and the recesses abut against the surface of the slips, so that the bearing plate can further provide supporting force.

[0018] According to the present invention, the first pressure plate and the second pressure plate are respectively evenly provided with a plurality of first card grooves and a second card groove along the outer circumference, and the first card grooves are arranged opposite to the second card grooves. At the same time, a plurality of groups of elastic support components are evenly provided along the outer circumferential direction on the outer surface of the core shaft, and each group of elastic support components includes a plurality of elastic support components evenly provided along the axial direction of the core shaft, thereby enabling the simultaneous processing of multiple cavas and improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall structural diagram of the slip processing device according to the present invention is schematically shown;

[0020] Figure 2 The schematic diagram of the structure of the slip processing device according to the present invention after the slips are assembled is shown;

[0021] Figure 3 The schematic diagram shows the structure of the slip after processing.

[0022] In the present application, all drawings are schematic drawings, which are only used to illustrate the principles of the present invention and are not drawn according to the actual scale. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "upper", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the present invention, "multiple" refers to two or more.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] like Figures 1 to 3As shown, the cava processing device 100 described in the present invention includes: a core shaft 1, an elastic support component arranged on the outer surface of the core shaft 1, and a first pressure plate 2 and a second pressure plate 6 sleeved on the outer surface of the core shaft 1, the first pressure plate 2 and the second pressure plate 6 are respectively provided with a first card groove 21 and a second card groove 61, the two ends of the cava 8 are respectively engaged in the first card groove 21 and the second card groove 61, and the end of the elastic support component away from the core shaft 1 is pressed and contacted with the surface of the cava 8.

[0027] According to the present invention, a core shaft 1, an elastic support assembly arranged on the outer surface of the core shaft 1, and a first pressing plate 2 and a second pressing plate 6 sleeved on the outer surface of the core shaft 1 are provided. The first pressing plate 2 and the second pressing plate 6 are respectively provided with a first card slot 21 and a second card slot 61, and the two ends of the slip 8 are respectively engaged in the first card slot 21 and the second card slot 61, and the end of the elastic support assembly away from the core shaft 1 is pressed and contacted with the surface of the slip 8. On the one hand, sufficient supporting force can be provided by the first pressing plate 2, the second pressing plate 6 and the elastic support assembly, and on the other hand, the elastic support assembly can provide vibration reduction performance for the slip 8, so that the slip 8 has better stability during the processing, and the slip 8 is prevented from falling from the loading mechanism, thereby improving the workpiece precision and processing efficiency.

[0028] In one or more embodiments, the elastic support assembly includes: a support portion 3 and a shockproof sleeve 4 sleeved on the top of the support portion 3, the shockproof sleeve 4 is in pressure contact with the surface of the slip 8, and the bottom of the support portion 3 is connected to the outer surface of the core shaft 1. Optionally, the shockproof sleeve 4 is made of rubber material.

[0029] In one or more embodiments, the support part 3 may be a threaded member, such as a screw, and a screw hole is provided on the outer surface of the mandrel 1, and the bottom of the support part 3 is threadedly connected to the screw hole. By screwing the support part 3 in different directions, the height of the support part 3 extending out of the outer surface of the mandrel 1 can be adjusted, so that the shockproof sleeve 4 sleeved on the top end thereof is pressed and contacted with the surface of the slip 8.

[0030] In one or more embodiments, a bearing plate 5 is disposed on one side of the second pressing plate 6 close to the first pressing plate 2, and the bearing plate 5 is sleeved on the outer surface of the mandrel 1 and connected to the second pressing plate 6. Optionally, the bearing plate 5 is connected to the second pressing plate 6 by countersunk bolts 7.

[0031] In one or more embodiments, a plurality of recesses 51 are evenly arranged on the outer periphery of the carrying plate 5 , and the recesses 51 abut against the surface of the slips 8 .

[0032] According to the present invention, a plurality of recesses 51 are evenly arranged on the outer circumference of the bearing plate 5 , and the recesses 51 abut against the surface of the slips 8 , so that the bearing plate 5 can further provide supporting force.

[0033] In one or more embodiments, the first pressing plate 2 and the second pressing plate 6 have the same shape, and the first pressing plate 2 and the second pressing plate 6 are respectively evenly provided with a plurality of first card slots 21 and second card slots 61 along the periphery, and the first card slots 21 and the second card slots 61 are arranged opposite to each other.

[0034] In one or more embodiments, a plurality of groups of elastic support components are evenly arranged on the outer surface of the core shaft 1 along the peripheral direction, and each group of elastic support components includes a plurality of elastic support components evenly arranged along the axial direction of the core shaft 1 .

[0035] In one or more embodiments, a notch is disposed between adjacent first card slots 21 , and a notch is disposed between adjacent second card slots 61 .

[0036] The following is a brief description of the use process of the slip processing device 100 of the present invention. The long row of slips 8 to be processed is loaded into the slip processing device 100, and the two ends of the slips 8 are respectively inserted into the first clamping groove 21 and the second clamping groove 61, and the second pressing plate 6 is connected and secured to the bearing plate 5 with the countersunk bolts 7. By tightening or loosening the height of the support portion extending out of the outer surface of the mandrel 1, the shockproof sleeve 4 set on the top end thereof is pressed against the surface of the slip 8, and the slip 8 is ensured not to be loose (such as Figure 2 Finally, the slip processing device 100 with the slips 8 is loaded into the processing equipment to complete the turning and milling process (as shown in FIG. Figure 3 shown).

[0037] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A slip processing device, comprising: A core shaft, an elastic support component arranged on the outer surface of the core shaft, and a first pressure plate and a second pressure plate sleeved on the outer surface of the core shaft, the first pressure plate and the second pressure plate are respectively provided with a first card slot and a second card slot, the two ends of the slip are respectively engaged in the first card slot and the second card slot, and the end of the elastic support component away from the core shaft is pressed and contacted with the surface of the slip.

2. The slip processing device according to claim 1, characterized in that: The elastic support assembly includes: a support part and a shockproof sleeve placed on the top of the support part, the shockproof sleeve is in pressure contact with the surface of the slip, and the bottom of the support part is connected to the outer surface of the core shaft.

3. The slip processing device according to claim 2, characterized in that: The support part is a threaded part, a screw hole is formed on the outer surface of the core shaft, and the bottom of the support part is threadedly connected to the screw hole.

4. The slip processing device according to claim 2, characterized in that: The shockproof sleeve is made of rubber material.

5. The slip processing device according to claim 1 or 2, characterized in that: A bearing plate is disposed on one side of the second pressing plate close to the first pressing plate. The bearing plate is sleeved on the outer surface of the core shaft and connected to the second pressing plate.

6. The slip processing device according to claim 5, characterized in that: A plurality of recesses are evenly arranged on the outer periphery of the bearing plate, and the recesses abut against the surface of the slips.

7. The slip processing device according to claim 5, characterized in that: The bearing plate and the second pressing plate are connected by countersunk bolts.

8. The slip processing device according to claim 1, characterized in that: The first pressing plate and the second pressing plate are respectively evenly provided with a plurality of first card slots and second card slots along the outer circumference, and the first card slots are arranged opposite to the second card slots.

9. The slip processing device according to claim 8, characterized in that: A notch is provided between adjacent first card slots, and a notch is provided between adjacent second card slots.

10. The slip processing device according to claim 8, characterized in that: The outer surface of the core shaft is evenly provided with a plurality of groups of the elastic support components along the peripheral direction, and each group of the elastic support components includes a plurality of the elastic support components evenly provided along the axial direction of the core shaft.

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