A guide type sucker rod gasket and slip

Abstract

The utility model belongs to the technical field of petroleum drilling and workover rig, concretely relates to a guide type sucker rod packing ring and slip, including base, the upper end of base is equipped with guide mechanism, the guide mechanism and base are integral whole structure, the base and guide mechanism are equipped with the through hole that supplies the sucker rod and is inserted in on, the through hole has the opening along the vertical direction. The utility model has realized the quick automatic centering between the sucker rod hanger and the sucker rod, even under the working condition that the central deviation reaches 50mm, the opening angle deviation reaches 15º, still can guide the sucker rod hanger to hold the sucker rod smoothly and accurately, has reduced the time of repeatedly adjusting the position of the sucker rod hanger, has improved the continuity and efficiency of the workover operation greatly, and simultaneously still guarantees the life safety of operating personnel and the normal operation of equipment.

Description

Technical Field

[0001] This utility model belongs to the technical field of oil drilling and workover equipment, specifically relating to a guide-type sucker rod washer and slip. Background Technology

[0002] In the field of oil drilling and workover, sucker rod slips are key tools in wellhead operations, used to clamp and secure the sucker rod for raising, lowering, or retrieving it using a sucker rod dropper. To ensure the sucker rod slips are not damaged while clamping and securing the sucker rod, sucker rod washers are installed on them. These washers ensure the slips firmly grip the sucker rod during raising, lowering, or retrieving, effectively preventing serious safety accidents such as slippage or detachment due to excessive weight. Currently, the installation and securing methods for sucker rod washers are relatively complex, and maintenance and replacement require significant time and manpower, severely impacting the continuity and efficiency of operations.

[0003] Existing technologies address the difficulty of repairing and replacing sucker rod washers, such as patent CN217582055U – a new type of sucker rod slip. This involves a detachable sucker rod washer fitted to the top of the slip body, facilitating repair and replacement and making it suitable for sucker rods of different diameters. However, after the sucker rod is clamped and fixed in place by the sucker rod washer and the sucker rod dropper is lowered onto the sucker rod slip by the workover rig, causing the threaded joint at its lower end to align with the sucker rod washer. The sucker rod is clamped and its male or female threads are connected, then screwed on. However, during the lowering process, the sucker rod sleeve may experience center and angle deviations due to various factors (such as mechanical vibration and operational errors). Therefore, the center and angle of the lowering sleeve must be repeatedly adjusted to ensure that the sucker rod clamped at the sucker rod was properly held by the sleeve. This process is time-consuming, inefficient, and makes it difficult to guarantee the clamping accuracy between the sleeve and the sucker rod, thus seriously affecting the stability and safety of well workover operations. Therefore, a new technical solution is needed to address these problems. Utility Model Content

[0004] The purpose of this invention is to provide a guide-type sucker rod washer and slip to solve the problems mentioned in the background art, such as the need to repeatedly adjust the center and angle of the sucker rod dropper when the sucker rod held by the sucker rod washer is clamped by the sucker rod dropper, which is time-consuming, inefficient, and makes it difficult to ensure the clamping accuracy between the sucker rod dropper and the sucker rod, thus seriously affecting the stability and safety of well workover operations.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a guide rod washer, comprising a base, a guide mechanism at the upper end of the base, the guide mechanism and the base being an integral structure, a through hole for inserting the sucker rod on the base and the guide mechanism, the through hole having an opening in the vertical direction; the guide mechanism comprising an integrally formed guide wedge and a guide seat, the guide seat being vertically erected on the top of the guide wedge and close to the opening of the through hole, the guide wedge being horizontally erected on the top of the base, two opposing mounting posts being arranged circumferentially on the bottom end of the base, and two opposing waist-shaped holes located above the corresponding mounting posts being opened on the base, the waist-shaped holes corresponding one-to-one with the mounting posts.

[0006] Furthermore, the top view of the guide wedge is tongue-shaped, and the top end of the guide wedge near the opening of the through hole has a guide slope extending inclinedly from its connection with the guide seat to both ends of the through hole opening; the top end of the guide wedge away from the opening of the through hole is provided with a limiting wedge; the limiting wedge has a slope extending inclinedly from its connection with the guide seat to the top surface of the guide wedge, and the slope and the top surface of the guide wedge are connected by a vertical surface to form a stepped structure.

[0007] Furthermore, the guide seat is composed of two oppositely arranged guide arms, with the upper part of the through hole formed between the two guide arms, the middle part of the through hole located at the guide wedge, and the lower part of the through hole located at the base.

[0008] In addition to the above technical solutions, the guide rod gasket is embedded in the mounting groove of the slip through its base.

[0009] Furthermore, the guide rod washer is elastically installed in the mounting groove of the slip by a spring sleeved on the mounting post at the bottom of the base. A pull ring bolt is connected through each of the two side walls of the slip, and the end of the pull ring bolt extends into the waist-shaped hole in the axial direction of the base.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model utilizes the guiding function of a guiding mechanism to achieve rapid and automatic alignment between the sucker rod dropper and the sucker rod. Even under conditions where the center deviation reaches 50mm and the opening angle deviation reaches 15º, it can still guide the sucker rod dropper to smoothly and accurately hold the sucker rod, significantly reducing the time spent repeatedly adjusting the lowering position of the sucker rod dropper, greatly improving the continuity and efficiency of well workover operations. Simultaneously, it ensures the holding accuracy between the rod dropper and the sucker rod, allowing the sucker rod to be stably clamped and fixed during raising, lowering, or lowering, effectively avoiding safety accidents caused by holding problems, and protecting the lives of operators and the normal operation of equipment; the through hole is vertically aligned... The open design in the direction not only makes clamping and releasing the sucker rod easier, but also accommodates minor wobbling or positional deviations of the sucker rod to a certain extent, ensuring that the sucker rod is always in a good clamping state and improving operational safety. On this basis, the guide mechanism and base set by the integrated structure not only avoid the stress concentration, cracking or loosening problems caused by traditional split or welded connections, but also enable the sucker rod gasket to withstand greater impact force and off-center load, resulting in a longer service life and safer and more reliable operation. Furthermore, it ensures that the guide mechanism and the through hole on the base always maintain a precise relative position, thereby guaranteeing the accuracy and consistency of the guiding function. 2. This utility model adopts an integrated guide wedge and guide seat to form a guide mechanism, which effectively avoids the problem of guide failure caused by loose component connections and ensures the long-term stable operation of the guide function. Utilizing the tongue-shaped contour and guide slope design of the guide wedge, the sucker rod can be coarsely guided to the correct area in a wide range in the horizontal direction. Combined with the guide seat design formed by two guide arms, the sucker rod can be finely positioned to ensure that the sucker rod can be accurately locked with the body of the sucker rod, rather than being locked at the four sides of the sucker rod. This staged guide process greatly improves the success rate and speed of centering. 3. This utility model effectively prevents excessive movement of the sucker rod canister during descent by setting a limiting wedge at the top of the guide wedge away from the through hole opening, thus playing a positioning and limiting role. This effectively avoids problems such as jamming failure or equipment damage caused by excessive descent. On this basis, the design of the inclined surface of the limiting wedge and the top surface of the guide wedge are connected by a vertical surface to form a stepped structure, which not only provides a more reliable limiting effect, but also buffers the impact force when the sucker rod canister is lowered to a certain extent, further improving the stability and safety of the jamming. 4. The through hole of this utility model is divided into a three-section hole structure located in the upper section of the guide arm, the middle section of the guide wedge, and the lower section of the base. This structure allows the clamping force of the sucker rod to be evenly distributed. The upper section guides the sucker rod, the middle section begins to bear part of the lateral force, and the lower section mainly bears the vertical downward gravity. This effectively avoids stress concentration, significantly improves the overall strength and wear resistance of the sucker rod gasket, and extends its service life. At the same time, it ensures that the sucker rod is always on the designed center line, whether in the guiding stage or the final clamping stage, thus guaranteeing the stability of clamping and the accuracy of centering. 5. This utility model integrates the guide rod washer onto the slips via a safety post, enabling the slips to provide precise guidance while clamping the sucker rod, thus improving the stability and safety of sucker rod operation. Utilizing the elasticity of the spring, the guide rod washer can not only elastically extend and retract within a certain range and adjust its position, effectively reducing damage to the slips and sucker rod caused by vibration and displacement, but also, in conjunction with the pull ring bolt, restrict the vertical movement of the guide rod washer. Furthermore, the combination of the pull ring bolt and the oblong hole allows for precise adjustment of the guide rod washer's position, meeting the needs of different operating conditions and improving the adaptability and reliability of the slips. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of Embodiment 1 of the present invention. Figure 3 ; Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this utility model; Figure 5 for Figure 4 A schematic diagram of the exploded structure; Figure 6 This is a schematic diagram of the structure of the kava in Embodiment 2 of this utility model.

[0012] The components are: 1. Base; 2. Guide wedge; 201. Guide ramp; 3. Guide seat; 301. Guide arm; 4. Through hole; 5. Mounting column; 6. Waist-shaped hole; 7. Limiting wedge; 701. Ram; 8. Vertical surface; 9. Slip; 901. Mounting groove; 10. Spring; 11. Pull ring bolt. Detailed Implementation

[0013] The following embodiments are used to further illustrate the content of this utility model, and do not limit the application of this utility model. Example 1:

[0014] Please see Figures 1-3 This embodiment provides a guide rod gasket, including a base 1, a guide wedge 2 and a guide seat 3. The base 1, guide wedge 2 and guide seat 3 are an integral structure. The integral structure is provided with a through hole 4 for the sucker rod to be inserted. The through hole 4 has an opening in the vertical direction. The guide seat 3 is vertically set on the top of the guide wedge 2 and close to the opening of the through hole 4. The guide wedge 2 is horizontally set on the top of the base 1. Two oppositely arranged mounting posts 5 are arranged on the bottom circumference of the base 1. Two oppositely arranged waist-shaped holes 6 are opened on the base 1 and located above the corresponding mounting posts 5. The waist-shaped holes 6 correspond one-to-one with the mounting posts 5.

[0015] Please see Figures 1-3 The top view of the guide wedge 2 is tongue-shaped, and the top of the guide wedge 2 near the opening of the through hole 4 has a guide slope 201 that extends obliquely from its connection with the guide seat 3 to both ends of the opening of the through hole 4. A limiting wedge 7 is provided at the top of the guide wedge 2 away from the opening of the through hole 4. The limiting wedge 7 has an inclined surface 701 that extends from its connection with the guide seat 3 toward the top surface of the guide wedge 2. The inclined surface 701 and the top surface of the guide wedge 2 are connected by a vertical surface 8 to form a stepped structure. The guide seat 3 is composed of two guide arms 301 arranged opposite to each other. The upper part of the through hole 4 is formed between the two guide arms 301. The middle part of the through hole 4 is located at the guide wedge 2, and the lower part of the through hole 4 is located at the base 1.

[0016] The working principle and usage process of this utility model are as follows: Figures 1-3As shown, after the guideable sucker rod washer is assembled, the operator installs the entire guideable sucker rod washer into the mounting groove 901 of the slip 9. This is to achieve connection between the sucker rod sleeve (the function and structure of conventional equipment such as sucker rod sleeves are well-known in the art, and the connection settings are also common knowledge, so they will not be described in detail here, nor are they shown in the accompanying drawings; their structure can be found in patent CN113047785A - A Hydraulic Sucker Rod Sleeve) and the sucker rod (the function and structure of conventional equipment such as sucker rods are well-known in the art, and the connection settings are also common knowledge, so...). (Details omitted here, and not shown in the attached diagram) The rapid automatic alignment between the two systems allows the sucker rod can smoothly and accurately hold the sucker rod even under conditions where the center deviation reaches 50mm and the opening angle deviation reaches 15º. This significantly reduces the time spent repeatedly adjusting the lowering position of the sucker rod can, greatly improving the continuity and efficiency of well workover operations. At the same time, it ensures the holding accuracy between the sucker rod can and the sucker rod, enabling the sucker rod to be stably clamped and fixed during raising, lowering, or raising, effectively avoiding safety accidents caused by holding problems, and protecting the lives of operators and the normal operation of equipment.

[0017] When the sucker rod dropper needs to hold the sucker rod, the operator must first select a guide sucker rod washer with a corresponding through hole 4 according to the specifications and dimensions of the sucker rod. Then, the guide sucker rod washer is installed in the mounting groove 901 of the slip 9. The sucker rod is then inserted into the slot of the slip 9. At the same time, the sucker rod will also be inserted into the through hole 4 as it is inserted into the slot. Then, the sucker rod dropper is lowered. During the lowering process, the guide sucker rod washer uses the tongue-shaped contour of the guide wedge 2 and the guide slope 201 to make the sucker rod dropper be coarsely aligned in a wide range in the horizontal direction, initially guiding it to the correct area. Then, the two guide arms 301 are used to finely adjust and position the sucker rod dropper, ensuring that the sucker rod dropper is held on the body of the sucker rod, rather than on the four sides of the sucker rod. This greatly improves the accuracy of the sucker rod dropper and the sucker rod holding together, thereby ensuring the success rate and speed of alignment. Example 2:

[0018] Please see Figures 4-6 As another objective of this utility model, a slip is provided, in which a guide sucker rod washer as described above is provided. The guide sucker rod washer is embedded in the mounting groove 901 of the slip 9 via its base 1. Therefore, the slip can obtain any of the beneficial effects of the guide sucker rod washer described above, which will not be repeated here.

[0019] Specifically: the guide sucker rod washer is elastically installed in the mounting groove 901 of the slip 9 through the spring 10 sleeved on the mounting post 5 at the bottom of the base 1. A pull ring bolt 11 is connected through each of the two side walls of the slip 9, and the end of the pull ring bolt 11 extends into the waist-shaped hole 6 in the axial direction of the base 1.

[0020] When it is necessary to replace the guide rod washer, simply pull the pull ring bolt 11 out of the oblong hole 6. After the new or other specifications of guide rod washer are installed, loosen the pull ring bolt 11 and let it extend into the oblong hole 6 to restrict the rotation of the guide rod washer. This effectively solves the problem of replacing the entire expensive slip assembly due to wear, and effectively saves maintenance costs and time.

Claims

1. A guide-type sucker rod washer, comprising a base, characterized in that, The upper end of the base is provided with a guide mechanism, which is an integral structure with the base. The base and the guide mechanism are provided with through holes for inserting sucker rods, and the through holes have openings in the vertical direction. The guiding mechanism includes an integrally formed guide wedge and a guide seat. The guide seat is vertically disposed on the top of the guide wedge and close to the opening of the through hole, and the guide wedge is horizontally disposed on the top of the base. The top view of the guide wedge is tongue-shaped, and the top of the guide wedge near the opening of the through hole has a guide slope that extends obliquely from its connection with the guide seat to both ends of the through hole opening. A limiting wedge is provided at the top of the guide wedge, away from the opening of the through hole; The guide seat is composed of two guide arms arranged opposite each other, with the upper part of the through hole formed between the two guide arms, the middle part of the through hole located at the guide wedge, and the lower part of the through hole located at the base.

2. The guide-type sucker rod washer according to claim 1, characterized in that, The limiting wedge has an inclined surface that extends from its connection with the guide seat toward the top surface of the guide wedge. The inclined surface and the top surface of the guide wedge are connected by a vertical surface to form a stepped structure.

3. The guide-type sucker rod washer according to claim 1, characterized in that, The base has two oppositely arranged mounting columns on its bottom circumference. The base has two oppositely arranged waist-shaped holes located above the corresponding mounting columns. The waist-shaped holes correspond one-to-one with the mounting columns.

4. A type of kava, characterized in that, Includes the guide sucker rod washer as described in any one of claims 1-3, wherein the guide sucker rod washer is embedded in the mounting groove of the slip via its base.

5. A kava according to claim 4, characterized in that, The guide rod washer is elastically installed in the mounting groove of the slip by a spring sleeved on the mounting post at the bottom of the base. A pull ring bolt is connected through each of the two side walls of the slip, and the end of the pull ring bolt extends into the waist-shaped hole in the axial direction of the base.

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