Deviation rectifying mechanism for petroleum workover string

Abstract

The invention relates to the technical field of petroleum workover rigs, and discloses a petroleum workover string deviation rectifying mechanism which comprises a mounting bottom plate, a bottom frame and a workover platform, an open groove and a sliding groove are formed in the two sides of the mounting bottom plate correspondingly, and a first through hole and a second through hole are formed in the mounting bottom plate and the workover platform correspondingly; an electric sliding rail is installed on the wall face of an inner cavity of the sliding groove, a mounting base is slidably connected to the electric sliding rail, driving motors are fixedly installed on the side wall face of the mounting base and the side wall face of the mounting bottom plate correspondingly, bidirectional lead screws are fixed to the output shaft ends of the driving motors correspondingly, and sliding blocks are slidably connected to the two ends of the bidirectional lead screws correspondingly; and positioning blocks are arranged on the opposite sides of the two groups of sliding blocks. According to the pipe column clamping device, through cooperation of the electric sliding rail, the driving motor, the mounting base, the two-way lead screw and the sliding block, the four end points of a pipe column are limited, the situation that clamping force is concentrated at the two ends of the pipe column is avoided, and therefore the pipe column positioning stability is improved, and subsequent operation is prevented from being affected.

Description

Technical Field

[0001] The invention relates to the technical field of oil well repair machines, in particular to an oil well repair pipe string deviation correction mechanism. Background Art

[0002] The workover rig is the most basic and main power source in well repair and underground operation. It is mainly composed of a derrick, a traveling system and a winch. It is an important machine in the workover and underground operation of oil wells. Whether in underground maintenance, wellhead operations, or emergency rescue, the workover rig plays an indispensable role. With the advancement of technology, modern workover rigs pay more and more attention to automation and intelligence, and their operational safety and efficiency are constantly improving, providing a solid guarantee for the safe and efficient exploitation of oil and natural gas.

[0003] The search publication (announcement) number: CN221074143U discloses a correction mechanism for a petroleum well repair pipe string, including a well repair platform, a turntable and a pneumatic chuck are arranged on the upper part of the well repair platform, a blowout preventer and a flange are arranged on the lower part of the well repair platform, a pipe string is sleeved on the center of the flange, and a correction component aligned with the turntable is also arranged on the well repair platform. The utility model overcomes the shortcomings of the prior art and has a reasonable design. In the process of taking out the oil pipe string during well repair, it effectively solves the problem that the pipe string shakes when it is taken out due to the non-straight path of the oil pipe and cannot be clamped by the automatic clamping device, and has a high social use value and application prospects.

[0004] In the above-mentioned prior art solutions, only the two ends of the pipe string are clamped and limited, which may cause the position of the pipe string to shift during the positioning process, affecting subsequent operations.

[0005] Therefore, we propose a deviation correction mechanism for oil well repair pipe string. Summary of the invention

[0006] The present invention mainly solves the technical problems existing in the above-mentioned prior art and provides a deviation correction mechanism for a petroleum well repairing pipe string.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a correction mechanism for a petroleum well repair pipe string, comprising a mounting base plate, a base frame and a well repair platform, wherein slots and slide slots are respectively provided on both sides of the mounting base plate, a first through hole and a second through hole are respectively provided on the mounting base plate and the well platform, an electric slide rail is installed on the inner wall of the slide slot, a mounting seat is slidably connected to the electric slide rail, a driving motor is fixedly installed on the mounting seat and the side wall of the mounting base plate, a bidirectional screw rod is fixed on the output shaft end of the driving motor, a slider is slidably connected to both ends of the bidirectional screw rod, and a positioning block is provided on the opposite side of the two groups of sliders.

[0008] Preferably, a shock-absorbing sleeve is fixedly installed on the wall surface on one side of the positioning block, a shock-absorbing sleeve rod is sleeved in the shock-absorbing sleeve, a second spring is fixedly connected to one side of the shock-absorbing sleeve rod, a buffer slider is slidably connected to the four shock-absorbing sleeve rods, and a first spring is sleeved on the four shock-absorbing sleeve rods.

[0009] Preferably, limiting grooves are provided on two wall surfaces of the inner cavity of the shock-absorbing sleeve, and limiting blocks are fixedly connected to both sides of the four shock-absorbing sleeve rods and at positions corresponding to the limiting grooves.

[0010] Preferably, a plurality of rubber strips are fixedly connected to the wall surfaces opposite to the positioning block.

[0011] Preferably, the slide groove and the mounting seat are both U-shaped structures.

[0012] Preferably, the other end of the second spring is fixedly connected to the wall surface of the inner cavity of the shock-absorbing sleeve, and the end of the shock-absorbing sleeve rod close to the slider is fixedly connected to the side wall surface of the slider.

[0013] Preferably, one end of the first spring close to the slider is fixedly connected to the side wall surface of the slider, and the other end of the first spring is fixedly connected to the wall surface of the buffer slider close to the first spring.

[0014] The present invention provides a petroleum well repair pipe string deviation correction mechanism, which has the following beneficial effects:

[0015] 1. This kind of oil well repair pipe string correction mechanism limits the four end points of the pipe string through the cooperation of electric slide rails, drive motors, mounting seats, bidirectional screw rods, and sliders to avoid the clamping force being concentrated on the two ends of the pipe string, thereby improving the stability of the pipe string positioning and avoiding affecting subsequent operations.

[0016] 2. This oil well repair pipe string correction mechanism initially buffers the clamping force of the positioning block through the second spring in the inner cavity of the shock-absorbing sleeve, and buffers the clamping force of the positioning block again through the cooperation of the buffer slider and the first spring, thereby avoiding indentation on the pipe string when clamping the pipe string.

[0017] 3. The oil well repair pipe string deviation correction mechanism, through the cooperation of the limit groove and the limit block, makes the limit block be limited in the inner cavity of the limit groove, preventing the shock-absorbing sleeve rod from being separated from the inner cavity of the shock-absorbing sleeve.

[0018] 4. In this oil well repair pipe string deviation correction mechanism, a plurality of rubber strips are fixedly connected to the wall surfaces opposite to the positioning block. The provision of the rubber strips can increase the friction between the positioning block and the pipe string to prevent unstable limiting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation of the present invention or the technical solution in the prior art, the following briefly introduces the drawings required for the implementation or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0021] Figure 1 It is a three-dimensional schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a three-dimensional schematic diagram of the structure of the present invention;

[0023] Figure 3 It is a three-dimensional schematic diagram of the structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the separation of the shock absorbing sleeve rod and the shock absorbing sleeve of the present invention;

[0025] Figure 5 It is a schematic diagram of the disassembly of the shock absorbing sleeve rod and the shock absorbing sleeve of the present invention.

[0026] Legend:

[0027] 1. Install the base plate; 101. Slot; 102. Slide; 103. First through hole; 104. Bottom frame; 105. Well repair platform; 106. Second through hole; 2. Electric slide rail; 201. Mounting seat; 3. Drive motor; 301. Bidirectional screw rod; 302. Sliding block; 4. Positioning block; 401. Rubber strip; 5. Shock-absorbing sleeve; 501. Limiting groove; 6. Shock-absorbing sleeve rod; 601. First spring; 602. Buffering slider; 603. Limiting block; 7. Second spring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0029] Embodiment 1: A petroleum well repair pipe string correction mechanism, such as Figure 1-Figure 4 As shown, it includes a mounting base plate 1, the bottom of which is fixedly connected to a bottom frame 104, a well repair platform 105 is provided on the top of the mounting base plate 1, slots 101 and slides 102 are respectively provided on both sides of the mounting base plate 1, a first through hole 103 for a pipe column to pass through is provided on the top of the mounting base plate 1, a second through hole 106 is provided on the well repair platform 105 and at a position corresponding to the first through hole 103, the slide 102 is a U-shaped structure as a whole, an electric slide rail 2 is installed on the inner cavity wall of the slide rail 102, a U-shaped mounting seat 201 is slidably connected to the electric slide rail 2, a driving motor 3 is fixedly installed on the mounting seat 201 and the mounting base plate 1 on one side wall of the slot 101, the output shaft end of the driving motor 3 is fixedly connected to a bidirectional screw rod 301, both ends of the bidirectional screw rod 301 are slidably connected to sliders 302, and the opposite sides of the two groups of sliders 302 are provided with positioning blocks 4 for limiting the position of the pipe column.

[0030] Embodiment 2: A petroleum well repair pipe string correction mechanism, such as Figure 1-Figure 4 As shown, it includes a mounting base plate 1, the bottom of which is fixedly connected to a bottom frame 104, a well repair platform 105 is provided on the top of the mounting base plate 1, slots 101 and slides 102 are respectively provided on both sides of the mounting base plate 1, a first through hole 103 for a pipe column to pass through is provided on the top of the mounting base plate 1, a second through hole 106 is provided on the well repair platform 105 and at a position corresponding to the first through hole 103, the slide 102 is a U-shaped structure as a whole, an electric slide rail 2 is installed on the inner cavity wall of the slide rail 102, a U-shaped mounting seat 201 is slidably connected to the electric slide rail 2, a driving motor 3 is fixedly installed on the mounting seat 201 and the mounting base plate 1 on one side wall of the slot 101, the output shaft end of the driving motor 3 is fixedly connected to a bidirectional screw rod 301, both ends of the bidirectional screw rod 301 are slidably connected to sliders 302, and the opposite sides of the two groups of sliders 302 are provided with positioning blocks 4 for limiting the position of the pipe column.

[0031] A shock-absorbing sleeve 5 is fixedly installed on the central wall surface of the positioning block 4 on the side close to the slider 302, and the inner cavities of the four shock-absorbing sleeves 5 are sleeved with shock-absorbing rods 6. The four shock-absorbing rods 6 are fixedly connected with the second spring 7 on the side close to the shock-absorbing sleeve 5, and the other ends of the second springs 7 are fixedly connected to the wall surface of the inner cavity of the shock-absorbing sleeve 5. The four shock-absorbing rods 6 are slidably connected with a buffer slider 602, and the ends of the four shock-absorbing rods 6 close to the slider 302 are fixedly connected to the side wall surface of the slider 302. The four shock-absorbing rods 6 are sleeved with a first spring 601, and the ends of the first spring 601 close to the slider 302 are fixedly connected to the side wall surface of the slider 302, and the other ends of the first springs 601 are fixedly connected to the wall surface of the buffer slider 602 close to the first spring 601.

[0032] Embodiment 3: A petroleum well repair pipe string correction mechanism, such as Figure 1-Figure 4 As shown, it includes a mounting base plate 1, the bottom of which is fixedly connected to a bottom frame 104, a well repair platform 105 is provided on the top of the mounting base plate 1, slots 101 and slides 102 are respectively provided on both sides of the mounting base plate 1, a first through hole 103 for a pipe column to pass through is provided on the top of the mounting base plate 1, a second through hole 106 is provided on the well repair platform 105 and at a position corresponding to the first through hole 103, the slide 102 is a U-shaped structure as a whole, an electric slide rail 2 is installed on the inner cavity wall of the slide rail 102, a U-shaped mounting seat 201 is slidably connected to the electric slide rail 2, a driving motor 3 is fixedly installed on the mounting seat 201 and the mounting base plate 1 on one side wall of the slot 101, the output shaft end of the driving motor 3 is fixedly connected to a bidirectional screw rod 301, both ends of the bidirectional screw rod 301 are slidably connected to sliders 302, and the opposite sides of the two groups of sliders 302 are provided with positioning blocks 4 for limiting the position of the pipe column.

[0033] A shock-absorbing sleeve 5 is fixedly installed on the central wall surface of the positioning block 4 on the side close to the slider 302, and the inner cavities of the four shock-absorbing sleeves 5 are sleeved with shock-absorbing rods 6. The four shock-absorbing rods 6 are fixedly connected with the second spring 7 on the side close to the shock-absorbing sleeve 5, and the other ends of the second springs 7 are fixedly connected to the wall surface of the inner cavity of the shock-absorbing sleeve 5. The four shock-absorbing rods 6 are slidably connected with a buffer slider 602, and the ends of the four shock-absorbing rods 6 close to the slider 302 are fixedly connected to the side wall surface of the slider 302. The four shock-absorbing rods 6 are sleeved with a first spring 601, and the ends of the first spring 601 close to the slider 302 are fixedly connected to the side wall surface of the slider 302, and the other ends of the first springs 601 are fixedly connected to the wall surface of the buffer slider 602 close to the first spring 601.

[0034] Limiting grooves 501 are provided on the two wall surfaces of the inner cavity of the four shock-absorbing sleeves 5. Limiting blocks 603 are fixedly connected to the two sides of the four shock-absorbing sleeve rods 6 and at positions corresponding to the limiting grooves 501. The limiting blocks 603 are limited in the inner cavity of the limiting grooves 501.

[0035] Embodiment 4: A petroleum well repair pipe string correction mechanism, such as Figure 1-Figure 4As shown, it includes a mounting base plate 1, the bottom of which is fixedly connected to a bottom frame 104, a well repair platform 105 is provided on the top of the mounting base plate 1, slots 101 and slides 102 are respectively provided on both sides of the mounting base plate 1, a first through hole 103 for a pipe column to pass through is provided on the top of the mounting base plate 1, a second through hole 106 is provided on the well repair platform 105 and at a position corresponding to the first through hole 103, the slide 102 is a U-shaped structure as a whole, an electric slide rail 2 is installed on the inner cavity wall of the slide rail 102, a U-shaped mounting seat 201 is slidably connected to the electric slide rail 2, a driving motor 3 is fixedly installed on the mounting seat 201 and the mounting base plate 1 on one side wall of the slot 101, the output shaft end of the driving motor 3 is fixedly connected to a bidirectional screw rod 301, both ends of the bidirectional screw rod 301 are slidably connected to sliders 302, and the opposite sides of the two groups of sliders 302 are provided with positioning blocks 4 for limiting the position of the pipe column.

[0036] A shock-absorbing sleeve 5 is fixedly installed on the central wall surface of the positioning block 4 on the side close to the slider 302, and the inner cavities of the four shock-absorbing sleeves 5 are sleeved with shock-absorbing rods 6. The four shock-absorbing rods 6 are fixedly connected with the second spring 7 on the side close to the shock-absorbing sleeve 5, and the other ends of the second springs 7 are fixedly connected to the wall surface of the inner cavity of the shock-absorbing sleeve 5. The four shock-absorbing rods 6 are slidably connected with a buffer slider 602, and the ends of the four shock-absorbing rods 6 close to the slider 302 are fixedly connected to the side wall surface of the slider 302. The four shock-absorbing rods 6 are sleeved with a first spring 601, and the ends of the first spring 601 close to the slider 302 are fixedly connected to the side wall surface of the slider 302, and the other ends of the first springs 601 are fixedly connected to the wall surface of the buffer slider 602 close to the first spring 601.

[0037] Limiting grooves 501 are provided on the two wall surfaces of the inner cavity of the four shock-absorbing sleeves 5. Limiting blocks 603 are fixedly connected to the two sides of the four shock-absorbing sleeve rods 6 and at positions corresponding to the limiting grooves 501. The limiting blocks 603 are limited in the inner cavity of the limiting grooves 501.

[0038] A plurality of rubber strips 401 are fixedly connected to the opposite wall surfaces of the four positioning blocks 4, thereby increasing the friction between the positioning blocks 4 and the pipe column and preventing unstable limiting.

[0039] Working principle of the present invention:

[0040] When in use, the pipe column is passed through the first through hole 103, the electric slide rail 2 and the drive motor 3 are started, the mounting seat 201 is close to the pipe column, and the drive motor 3 is started to drive the slider 302 on the bidirectional screw rod 301 to approach each other, thereby limiting the four end points of the pipe column.

[0041] During use, when the pipe column is clamped, the shock-absorbing sleeve 5 approaches the buffer slider 602. At this time, the second spring 7 in the inner cavity of the shock-absorbing sleeve 5 initially buffers the clamping force of the positioning block 4, and the shock-absorbing sleeve 5 continues to approach the buffer slider 602, so that the buffer slider 602 approaches the slider 302, and under the action of the first spring 601, the clamping force of the positioning block 4 is buffered again.

[0042] When in use, the limiting groove 501 cooperates with the limiting block 603 so that the limiting block 603 is limited in the inner cavity of the limiting groove 501 to prevent the shock-absorbing sleeve rod 6 from being separated from the inner cavity of the shock-absorbing sleeve 5 .

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "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 directly connected or indirectly connected 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.

[0048] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0049] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A petroleum well repair pipe string correction mechanism, comprising a mounting base plate (1), a base frame (104) and a well repair platform (105), characterized in that: The mounting base (1) is provided with a groove (101) and a slide groove (102) on both sides, the mounting base (1) and the well platform (105) are provided with a first through hole (103) and a second through hole (106) respectively, an electric slide rail (2) is installed on the inner wall of the slide groove (102), a mounting seat (201) is slidably connected to the electric slide rail (2), a driving motor (3) is fixedly installed on the mounting seat (201) and the side wall of the mounting base (1), a bidirectional screw rod (301) is fixedly installed on the output shaft end of the driving motor (3), and sliders (302) are slidably connected to both ends of the bidirectional screw rod (301), and positioning blocks (4) are provided on opposite sides of the two groups of sliders (302).

2. The oil well repair pipe string deviation correction mechanism according to claim 1, characterized in that: A shock-absorbing sleeve (5) is fixedly mounted on the wall surface on one side of the positioning block (4), a shock-absorbing sleeve rod (6) is sleeved inside the shock-absorbing sleeve (5), a second spring (7) is fixedly connected to one side of the shock-absorbing sleeve rod (6), a buffer slider (602) is slidably connected to the four shock-absorbing sleeve rods (6), and a first spring (601) is sleeved on the four shock-absorbing sleeve rods (6).

3. The oil well repair pipe string deviation correction mechanism according to claim 1, characterized in that: Limiting grooves (501) are provided on both wall surfaces of the inner cavity of the shock-absorbing sleeve (5), and limiting blocks (603) are fixedly connected to positions corresponding to the limiting grooves (501) on both sides of the four shock-absorbing sleeve rods (6).

4. The oil well repair pipe string deviation correction mechanism according to claim 1, characterized in that: A plurality of rubber strips (401) are fixedly connected to the wall surfaces opposite to the positioning block (4).

5. The oil well repair pipe string deviation correction mechanism according to claim 1, characterized in that: The slide groove (102) and the mounting seat (201) are both U-shaped structures.

6. The oil well repair pipe string deviation correction mechanism according to claim 2, characterized in that: The other end of the second spring (7) is fixedly connected to the wall surface of the inner cavity of the shock-absorbing sleeve (5), and the end of the shock-absorbing sleeve rod (6) close to the slider (302) is fixedly connected to the side wall surface of the slider (302).

7. The oil well repair pipe string deviation correction mechanism according to claim 2, characterized in that: One end of the first spring (601) close to the slider (302) is fixedly connected to the side wall surface of the slider (302), and the other end of the first spring (601) is fixedly connected to the wall surface of the buffer slider (602) close to the first spring (601).

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