Oil well special disassembler

Abstract

The present invention relates to a dedicated oil well disassembler, which solves the technical problem of requiring two operators to assemble and disassemble oilfield sucker rods. The disassembler comprises an annular fixing device, a special-shaped nut, and an adjustable telescopic lever. A retaining plate is fixed to one end of the adjustable telescopic lever, and the special-shaped nut is connected to the other end. The annular fixing device comprises a guide sleeve and an annular clamp. The guide sleeve is sleeved over the adjustable telescopic lever, and the adjustable telescopic lever is secured to the annular fixing device via a clamping screw. The present invention is widely applicable to the assembly and disassembly of oil well sucker rods.

Description

Technical Field

[0001] The present invention relates to the field of machinery, in particular to a special disassembler for oil wells. Background Art

[0002] According to investigations, the use of hydraulic pliers during the on-site pumping rod removal and installation process at oilfield wellhead operations is currently prohibited. Consequently, the current method of operation remains traditional manual labor. This means that when raising or lowering the pumping rod, two workers hold pipe pliers and apply force in opposite or same directions. This requires both operators to be of relatively equal height, weight, and strength. Furthermore, during this continuous operation, operators can easily become fatigued, creating safety risks. Summary of the Invention

[0003] In order to solve the technical problem that two operators are required for the assembly and disassembly of sucker rods in existing oil fields, the present invention provides a special disassembler for oil wells which can complete the assembly and disassembly of sucker rods by only one person.

[0004] The present invention provides a special disassembler for oil wells, which is provided with an annular fixing device, a special-shaped nut and an adjustable telescopic gear rod. A blocking piece is fixed at one end of the adjustable telescopic gear rod, and the other end is connected to the special-shaped nut. The annular fixing device is provided with a guide sleeve and an annular clamp. The guide sleeve is sleeved on the outside of the adjustable telescopic gear rod, and the adjustable telescopic gear rod is fixed to the annular fixing device through a clamping screw.

[0005] Preferably, a hole is provided in the middle of the special-shaped nut, and the adjustable telescopic lever is fixed to the special-shaped nut through a clamping screw.

[0006] Preferably, the annular clamp is provided with two or more arc structures to form a circular ring shape, and the arc structures are connected by hinges and threaded fasteners.

[0007] Preferably, the threaded fastener comprises a stud and a wing nut.

[0008] Preferably, the annular clamp inner ring is provided with teeth.

[0009] Preferably, the adjustable telescopic lever is provided with an outer lever and an inner lever, the outer lever is hollow, the inner lever is placed inside the outer lever, and the inner lever can extend out of the outer lever and be fixed by a fastener.

[0010] The beneficial effects of the present invention are:

[0011] This invention changes the traditional method of disassembling and assembling sucker rods, truly achieving the goal of reducing the number of operators, allowing one person to complete the work of multiple people. The clamps do not fall off, reducing operator workload and improving work efficiency. The connection parts of this invention use a clamping screw and butterfly nut, which facilitates clamping and ensures reliable operation. The adjustable telescopic lever can be extended according to actual needs, effectively adapting to various actual working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention;

[0013] Figure 2 It is a structural schematic diagram of the annular fixing device of the present invention.

[0014] Description of the accompanying symbols:

[0015] 1. Ring fixing device; 2. Special-shaped nut; 3. Adjustable telescopic lever; 11. Guide sleeve; 12. Clamping screw; 13. Connecting plate; 14. Ring clamp; 15. Butterfly nut; 16. Stud. DETAILED DESCRIPTION

[0016] The present invention is further described below with reference to the accompanying drawings and embodiments so that those skilled in the art can easily implement the present invention.

[0017] Example 1: Figure 1 As shown, the present invention comprises an annular fixing device 1, a special-shaped nut 2, and an adjustable telescopic lever 3. The adjustable telescopic lever 3 is a round, slender rod-shaped structure with the special-shaped nut 2 mounted on one end and a circular baffle fixed to the other end. The annular fixing device 1 is slidably mounted in the middle of the adjustable telescopic lever 3. The special-shaped nut 2 has a hole in the middle, and the lower end of the adjustable telescopic lever 3 can be inserted into the hole in the special-shaped nut 2 and secured by a clamping screw.

[0018] The adjustable telescopic gear rod has a double-layer structure of an outer gear rod and an inner gear rod. The inner gear rod is placed inside the hollow outer gear rod. The inner gear rod can be pulled out from the outer gear rod and fixed by rotating the knob.

[0019] like Figure 2 As shown, the annular fixing device 1 is provided with a guide sleeve 11 and an annular clamp 14, which are fixedly connected by a connecting plate 13; the guide sleeve 11 is sleeved on the long rod of the adjustable telescopic gear rod 3, and a clamping screw 12 is provided on the guide sleeve 11. Rotating the clamping screw 12 can limit the relative sliding of the guide sleeve 11 and the adjustable telescopic gear rod 3, so that the annular fixing device 1 is fixed relative to the adjustable telescopic gear rod 3. The annular clamp 14 is a three-section circular arc structure forming a circular ring shape, with teeth on the inner ring. The two ends of the arc fixed to the connecting plate 13 are connected to the other two arcs by hinges. The other ends of the two arcs not directly connected to the connecting plate 13 are respectively provided with a stud 16 and a stud inlet and outlet channel. The stud 16 is hinged to the annular clamp 14, and the stud 16 is equipped with a butterfly nut 15. After the stud 16 enters the stud inlet and outlet channel, tightening the butterfly nut 15 can tighten and close the three arcs of the annular clamp 14; loosening the butterfly nut 15, the stud 16 withdraws from the stud inlet and outlet channel, so that the two arcs not directly connected to the connecting plate 13 are separated from each other.

[0020] During operation, 1. fix the special-shaped nut 2 at the bottom of the present invention on the slip bolt at the lower part of the wellhead, and then insert the lower end of the adjustable telescopic lever 3 into the hole of the special-shaped nut; 2. fix the annular fixing device 1 located on the upper part of the adjustable telescopic lever 3 to the short section at the upper part of the wellhead, and adjust the butterfly nut 15 to fix and lock it; 3. adjust the adjustable telescopic lever 3 up and down to the appropriate height and fix it with the clamping screw 12. At this point, the installation is completed.

[0021] During operation, the present invention uses a dedicated wrench to lock the direction of rotation of the pump rod, eliminating the need for a manual back-up clamp. The operator uses another dedicated wrench to rotate and install the pump rod. At this time, the first wrench, which serves as the back-up clamp, is blocked by the adjustable telescopic lever 3 of the present invention and cannot rotate. This allows one person to complete the operation of installing and removing the pump rod.

[0022] The present invention changes the traditional method of disassembling and assembling the sucker rod, and truly achieves the purpose of reducing the number of operators. One person can complete the work of multiple people, the clamps will not fall off, the operator's labor is light, and work efficiency is improved.

[0023] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the scope of the claims shall fall within the scope of protection of the present invention.

Claims

1. A special disassembler for oil wells, characterized by: An annular fixing device, a special-shaped nut and an adjustable telescopic gear rod are provided. One end of the adjustable telescopic gear rod is fixed with a blocking piece, and the other end is connected to the special-shaped nut. The annular fixing device is provided with a guide sleeve and an annular clamp. The guide sleeve is sleeved on the outside of the adjustable telescopic gear rod. The adjustable telescopic gear rod is fixed to the annular fixing device by a clamping screw. A hole is provided in the middle of the special-shaped nut, the adjustable telescopic lever is fixed to the special-shaped nut through a clamping screw, the annular fixing device is fixed to the short section at the upper part of the wellhead, and the special-shaped nut is fixed to the slip bolt at the lower part of the wellhead; The adjustable telescopic lever is provided with an outer lever and an inner lever, wherein the outer lever is hollow and the inner lever is placed inside the outer lever, and the inner lever can extend out of the outer lever and be fixed by a fastener; The annular clamp is provided with two or more arc structures to form an annular shape, and the arc structures are connected by hinges and threaded fasteners; The threaded fastener includes a stud and a butterfly nut.

2. The oil well special disassembler according to claim 1, characterized in that: The annular clamp inner ring is provided with teeth.

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