A suspension rope unloading system

Abstract

The utility model discloses a kind of auxiliary unloading systems of suspending rope device, mainly by spacing component, adjusting backing pad is composed, can assist the suspending rope device and load of wellhead unloading. The spacing component, it includes split type limiting device and adjusting nut. The split type limiting device, limiting device is combined by bolt and is installed on the two screw rods of wellhead, the adjusting nut is installed in spacing component lower side, for adjusting the position of spacing component. Adjusting backing pad, it is placed in spacing component upside, increase the height of spacing component, mainly when small range stroke adjustment is used suspending rope device auxiliary unloading system on the application of multi-well machine system, not only convenient wellhead suspending rope device and load loading and unloading, also provide guarantee for the stability operation of multi-well machine system.

Description

Technical Field

[0001] This utility model belongs to the technical field of oil extraction equipment, specifically relating to a suspension rope auxiliary unloading system. Background Technology

[0002] In recent years, low oil prices have led to a decline in the profitability of oilfield operations. There are over 2 million pumping wells in oilfields both domestically and internationally, with 400,000 to 500,000 in China alone. Most of these are pumping units, which generally suffer from high energy consumption, large size, heavy weight, and low pumping efficiency. Therefore, researching and developing new, efficient, and advanced intelligent pumping units to improve production efficiency aligns with the development trend of the petroleum industry. Given the emphasis on safety, environmental protection, and the scarcity of land resources, a multi-well pumping unit with low energy consumption and high pumping efficiency has been designed. Since it operates on a single unit, a failure in one well can affect the operation of other wells, delaying production. Therefore, a suspension cable auxiliary unloading system has been designed at the wellhead for rapid unloading of the suspension cable and wellhead load. Utility Model Content

[0003] The purpose of this invention is to provide a suspension rope-assisted unloading system to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a suspension rope-assisted unloading system, comprising...

[0005] The limiting assembly includes a split limiting device and an adjusting nut. The split limiting device is bolted to two screws, and the adjusting nut is installed below the split limiting device for adjusting the position of the limiting assembly. An adjusting shim is placed above the limiting assembly to increase its height, primarily used for adjustments within a small range of travel.

[0006] Preferably, the split limiting device consists of two identical limiting devices, each with three semicircular tubes connected by plates, and the two limiting devices are connected and fixed by bolts.

[0007] In any of the above-mentioned solutions, the preferred option is that the limiting component is installed below the bottom dead center of the suspension cable's lower stroke. Its split structure facilitates installation and adjustment during operation. After installation, it also serves to stabilize the two side screws and center the sucker rod. Furthermore, the two adjustment methods—adjusting nut and adjusting shim—allow the suspension cable auxiliary unloading system to be applied to well groups with different strokes.

[0008] In any of the above embodiments, it is preferred that the adjusting nut is provided with a washer.

[0009] The technical effects and advantages of this utility model are as follows: 1. The multi-well rig is a machine that drives multiple wells. Through the suspension rope assisted unloading system, the wellhead unloading can be realized, ensuring that when a well fails and stops pumping for maintenance, the suspension rope and load at the wellhead of the faulty well can be unloaded quickly, thus ensuring the stable operation of the multi-well rig system.

[0010] 2. Under normal working conditions, the limit component is installed below the bottom dead center of the suspension rope device during the lower stroke. Its split structure facilitates installation and adjustment during operation. After installation, it can also stabilize the screws on both sides and center the sucker rod.

[0011] 3. The limit assembly is mounted on two screws on the derrick at both ends, and is positioned by adjusting nuts on the lower side. The position can be adjusted according to different working conditions, and it is suitable for wellheads of various strokes.

[0012] 4. The suspension wire auxiliary unloading system employs two adjustment methods: an adjusting nut and an adjusting shim. The adjusting nut, located below the limit assembly, is used for wide-range stroke adjustment, while the adjusting shim, located above the limit assembly, is used for narrow-range stroke adjustment. These two adjustment methods allow the suspension wire auxiliary unloading system to be applied to well groups with different strokes, thus exhibiting greater versatility. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the limiting component of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the adjusting pad of this utility model;

[0016] Figure 4 This is a schematic diagram of the operation process of the suspension rope unloading system of this utility model.

[0017] In the diagram: 1. Suspension rope device; 2. Limiting assembly; 321. Split-type limiting device; 322. Adjusting nut; 323. Adjusting pad; Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Example

[0021] The limiting assembly 32 includes a split limiting device 321 and an adjusting nut 322. The split limiting device 321 is a single limiting device that is bolted together and mounted on two screws at the wellhead. The adjusting nut 322 is mounted on the lower side of the split limiting device and is used to adjust the position of the split limiting device 321.

[0022] Adjusting pad 323 is placed on the upper side of the limiting component to increase the height of the limiting component 32, and is mainly used for small-range stroke adjustment.

[0023] The adjusting nut 322 is installed below the limiting device and is connected to the screw rod by threads. The height of the adjusting nut 322 on the screw rod can be adjusted by rotating the adjusting nut 322. Because the adjusting nut 322 carries the split limiting device 321, the height of the limiting component 32 can be adjusted. A shim is provided on the adjusting nut 322.

[0024] The limiting assembly 32 includes a split limiting device 321 mounted on the screw. The two parts of the split limiting device 321 are fixed to the screw by bolts, and the lower side is fixed by an adjusting nut 322. The position can be adjusted by rotating the adjusting nut 322 when needed. Example

[0025] During the use of this suspension rope-assisted unloading system, Figure 4 In the diagram, path A-B represents the reciprocating motion trajectory of the unloadable suspension rope 1. Point A is the lowest point that the unloadable suspension rope 1 can reach, and point B is the highest point. During normal wellhead operations, the suspension rope auxiliary unloading system 2 is in a static state. Figure 4When unloading is required at point M (m) on the left, stop the machine at the top stroke of the wellhead and move the limit component 32 in the suspension rope auxiliary unloading system 2 to the position shown. Figure 4 At point N (or by adding adjusting shims 323 to point N or above), start the pumping unit again. When the suspension rope 1 reaches the lower stroke and hits the limit device or stops at the lower dead point, the system can be unloaded. After unloading, the pumping unit system can be operated. After the operation is completed, start the machine to the upper stroke or after the suspension rope moves up and leaves the limit device, and then stop the machine. Then lower the limit device to the original position and start the machine to run normally.

[0026] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A suspended rope unloader assisted by a system characterized in that: include The limiting assembly (32) includes a split limiting device (321), an adjusting nut (322), and an adjusting pad (323). The split limiting device (321) is mounted on a screw (31), and the adjusting nut (322) is mounted on the lower side of the split limiting device for adjusting the height of the limiting assembly. The adjusting pad (323) is placed on the upper side of the limiting device to increase the height of the limiting device for adjusting the small range of stroke.

2. A catenary suspension device assisted unloading system according to claim 1, characterized in that: The split limiting device (321) consists of two identical limiting devices. Each limiting device has three semicircular tubes connected by plates, and the two limiting devices are connected and fixed by bolts.

3. A suspended rope unloading system according to claim 1, wherein: A washer is provided on the adjusting nut (322).

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