Plunger oil well pump with plunger capable of rotating automatically

Abstract

The invention relates to a novel plunger oil well pump device capable of preventing oil extraction equipment from sand jamming accidents, which is fundamentally characterized in that a spiral blade is mounted in a plunger and mainly comprises a central shaft and a spiral blade. The spiral blade is a spiral blade and is located in the plunger, and the outer edge of the spiral blade is fixedly connected with the inner wall of the plunger. Due to the design and the use of the spiral blade, the service life of the plunger oil-well pump can be prolonged, the occurrence of plunger sand blocking accidents can be reduced, the production efficiency of the oil-well pump is greatly improved, and the service life of the oil-well pump is greatly prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of a novel plunger oil pump for preventing sand jamming accidents, and specifically relates to a plunger oil pump device for preventing sand jamming of a plunger oil pump in oil exploitation. Background Art

[0002] The plunger pump is a commonly used underground oil extraction facility in oil production. It is mainly composed of a pump barrel and a plunger. The plunger is located in the pump barrel. The upper end of the plunger is fixedly connected to a sucker rod. Driven by the ground power, the sucker rod drives the plunger to reciprocate up and down in the pump barrel, bringing the underground petroleum liquid to the other side. Traditional plunger pumps will inevitably have accidents during their day-to-day operation. A common accident is the "sand jam" of the plunger pump. The so-called plunger "sand jam" is caused by: when the traditional plunger pump is in operation, the plunger always moves linearly along a fixed axial position. Affected by impurities such as sand particles in the oil, it is very easy to cause linear strain at specific locations on the outer wall of the plunger and the inner wall of the pump barrel. Sand particles are easily retained at the strained location. The retained sand particles will block the normal up and down movement of the plunger, causing "sand jam". Summary of the invention

[0003] The purpose of the present invention is to provide a simple and effective solution to the problem of sand jam in traditional oil production operations. The present invention is implemented in this way, and the key point of the present invention is: a spiral device is fixedly connected to the inside of the plunger of the plunger pump. The spiral device is composed of a central axis and a spiral blade. The spiral device is fixedly connected to the inside of the plunger of the plunger pump and forms an integral structure with the plunger pump. The spiral device described in the present invention is located inside the plunger of the plunger pump, and is a left-handed spiral blade from top to bottom, and the outer edge of the spiral blade is fixedly connected to the inner wall of the plunger. When the plunger pump is working, the spiral device functions as follows: during the upstroke, the spiral device moves upward synchronously with the oil. The plunger runs in a straight line, and during the downstroke, the oil exerts an upward impact on the spiral blades, driving the spiral blades to rotate radially counterclockwise, applying a radial counterclockwise torque to the plunger, causing the plunger to rotate to a certain extent while moving downward. At this time, the regular up and down linear motion of the plunger becomes an irregular non-linear motion, which makes it difficult to produce linear strain at a fixed position with the pump barrel, preventing sand from being retained and causing sand to get stuck in the plunger oil pump. Therefore, the design and use of the new plunger oil pump can prevent or reduce the occurrence of sand stuck accidents in the plunger oil pump, and improve the production efficiency and service life of the oil pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0004] Figure 1 . Schematic diagram of the overall shape and structure of the plunger oil pump embodiment of the present invention. Figure 2. Schematic diagram of the shape and structure of the spiral device of the embodiment of the present invention. In the figure, 1 is the sucker rod, 2 is the spiral device, 2-1 is the central axis, 2-2 is the spiral blade, 3 is the plunger, and 4 is the pump barrel. DETAILED DESCRIPTION

[0005] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Figure 1 The overall shape and structure of the plunger oil pump embodiment of the present invention is shown. The plunger oil pump of this embodiment is mainly composed of a spiral device 2, a plunger 3, and a pump barrel 4. The spiral blades of the spiral device are fixedly connected to the inner wall of the plunger, and the lower end of the sucker rod 1 and the upper end of the plunger can be connected to each other in radial relative rotation (such as adding bearings or sucker rod anti-drop devices, etc.). The sucker rod 1 and the plunger 3 are connected in series up and down as a whole, and are located in the pump barrel 4 and its upper part. The sucker rod 1 of this embodiment has a total length of about 800m, and is composed of multiple short single rods of 10 meters long connected up and down by threads; the spiral device 2 has an outer diameter of 32mm and a length of 1m; the plunger 3 has a length of 1.2m, an inner diameter of 32mm, and an outer diameter of 44mm; the pump barrel 4 has a length of 4.4m and an inner diameter slightly larger than 44mm. Figure 2 The shape structure of the spiral device of the embodiment of the present invention is shown, and the spiral device is mainly composed of a central shaft 2-1 and a spiral blade 2-2. The spiral blade 2-2 is left-handed, and its inner edge and outer edge are welded to the inner wall of the central shaft 2-1 and the plunger 3 respectively. The spiral blade 2-2 has a height of 1000mm, an outer diameter of 32mm, and a pitch of 400mm. The blade thickness is 3mm. During production operation: during the upstroke (when the sucker rod 1 drives the plunger 3 upward), the oil is synchronized with the spiral blade, and the oil has no impact on the spiral blade 2-2. During the downstroke (when the sucker rod 1 and the plunger 3 go downward), the oil has an upward impact on the spiral blade 2-2, and the spiral blade 2-2 drives the plunger 3 to move downward while rotating radially to the left, thereby generating irregular non-linear friction between the pump barrel 4 and the plunger 3, preventing the linear strain between the outer wall of the plunger and the inner wall of the pump barrel from causing the plunger to be unable to move up and down normally, and avoiding or reducing the occurrence of "sand jam" accidents. Obviously, this embodiment is only an example of the present invention, not all of it. Ordinary technicians in this field can obtain many other embodiments based on the present invention and its embodiments without making any creative work, such as: the application of spiral blades is usually left-handed, and its embodiments are also left-handed, but in different working situations, the left-handed direction can also be adopted, but the operation sequence is opposite to the above situation; for example: the spiral blade of the torque coupling of the present invention is one piece, and according to actual conditions, the spiral blade can also be multiple blades; the shape of the blade can be sheet-like, or it can be threaded or other shapes that can be driven to rotate by fluid; ... In short, the non-creative achievements of others inspired by the present invention are all infringements of the patent protection scope of the present invention.

Claims

1. A new plunger oil pump device for preventing sand jamming accidents in oil production equipment, characterized in that: The spiral device (2) is fixedly installed inside the plunger: it mainly consists of a central axis (2-1) and a spiral blade (2-2); the central axis (2-1) is a long cylindrical shape and is fixedly connected to the inner edge of the spiral blade; the spiral blade (2-2) is located inside the plunger of the plunger oil pump and is a left-handed spiral blade from top to bottom.

2. The novel plunger oil pump device for preventing sand jamming accidents in oil production equipment according to claim 1 is characterized in that: When the spiral device (2) is installed inside the plunger of the plunger oil pump, the inner edge of the spiral blade is fixedly connected to the inner wall of the plunger when it is working.

3. The novel plunger oil pump device for preventing sand jamming accidents in oil production equipment according to claim 1. The device is characterized in that: The spiral device (2) is installed inside the plunger of the plunger oil pump. When working, the umbilical spiral blade can be left-handed or right-handed.

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