Universal standing valve of oil well pump

Abstract

A universal standing valve of an oil well pump comprises a box 30, a sealing head 32 is arranged on the box 30, a mortar 31 is arranged on the inner wall of the box 30, a shaft 20 is installed on the mortar 31, a heavy hammer 10 is installed in the box 30, the heavy hammer 10 is provided with a hammer tail 11, the hammer tail 11 is hung in the mortar 31 through the shaft 20, the mortar 31 and the shaft 20 limit the freedom degree of the heavy hammer 10, and the heavy hammer 10 can only swing in the box 30 around the shaft 20. The swinging track of the heavy hammer 10 in the box 30 is the longitudinal axial section where the center line of the mortar 31 is located, the heavy hammer 10, the shaft 20 and the box 30 jointly form independent working bodies, the independent working bodies are sequentially connected to form a tool string, a lower connector 40 is installed below the independent working body at the lowest end in the tool string, and the lower connector 40 is connected with the upper connector 40. And an upper joint 50 is mounted on the uppermost independent working body in the tool string.

Description

Technical Field

[0001] This utility model discloses a universal fixed valve for an oil pump, belonging to the technical field of universal fixed valves for oil pumps. Background Technology

[0002] Oilfield pumping pumps are classified according to the direction of oil flow underground, including conventional pumps, high-angle pumps, and horizontal well pumps. Conventional pumps have an inclination angle less than 30 degrees, high-angle pumps have an inclination angle greater than 30 degrees but less than 60 degrees, and horizontal well pumps have an inclination angle greater than 60 degrees but less than 90 degrees. Conventional pumps cannot be used in inclined wells, and high-angle pumps cannot be used in horizontal wells. In oilfield production, the appropriate pumping pump must be selected strictly according to the well's direction. Various types of pumping pumps need to be purchased and stored, but these pumps are not interchangeable, increasing management and procurement costs, complicating operational guidance, and consuming significant manpower, financial resources, and materials. Therefore, the market needs a widely applicable pumping pump. However, current technology cannot solve this problem, making the universal fixed valve technology for pumping pumps a necessity.

[0003] The purpose of this utility model is to solve the problems and shortcomings of the existing technology and to propose a universal fixed valve for oil pumps. It is applicable to conventional wells, highly deviated wells, and horizontal wells. In order to propose a universal fixed valve for oil pumps, this utility model has improved dozens of schemes, optimized the design for two years, and conducted more than 20 tests and experiments. Finally, this utility model solves all the above problems with the simplest structure and provides a universal fixed valve for oil pumps. Utility Model Content

[0004] The problem to be solved by this utility model is achieved by the following technical solution:

[0005] A universal fixed valve for an oil pump, characterized in that it comprises: a box 30, a sealing head 32 on the box 30, a mortise 31 on the inner wall of the box 30, a shaft 20 mounted on the mortise 31, a counterweight 10 installed inside the box 30, the counterweight 10 having a hammer tail 11, the hammer tail 11 being suspended inside the mortise 31 by the shaft 20, the mortise 31 and the shaft 20 limiting the degree of freedom of the counterweight 10, the counterweight 10 being able to swing only around the shaft 20 inside the box 30, the swing trajectory of the counterweight 10 inside the box 30 being the longitudinal axis tangent plane of the center line of the mortise 31, the counterweight 10, the shaft 20, and the box 30 together constituting an independent working body, the independent working bodies being sequentially connected to form a tool string, the lowermost independent working body in the tool string having a lower connector 40 installed below it, and the uppermost independent working body in the tool string having an upper connector 50 installed on it.

[0006] Preferably, the arrangement of each independent working body in the tool string is as follows: taking the first independent working body as a reference, the mortise 31 of the next independent working body is staggered by the same angle in the same rotation direction according to the angular position of the mortise 31 of the previous independent working body. The rotation direction of the hammer 10 can be continuous clockwise or continuous counterclockwise.

[0007] Preferably, the number of independent workpieces in a toolchain is 4-12, and the standard is that the total angle between adjacent independent workpieces is not less than 360 degrees.

[0008] Preferably, the angle between the mortises 31 of the independent working bodies is 30 degrees to 90 degrees.

[0009] The technical principle is as follows:

[0010] Under the limiting action of shaft 20 and mortar 31, the counterweight 10 can accurately close to the end cap 32 to form a sealing pair. Therefore, different working states will occur when the well inclination angle is different.

[0011] When the well inclination angle is less than or equal to 30 degrees, all the counterweights 10 can be pressed against the head 32 to form a sealing pair (specifically 4-12).

[0012] When the well inclination angle is greater than 30 degrees and less than or equal to 60 degrees, at least half of the weights 10 can fall under gravity and press against the head 32 to form a sealing pair (specifically 2-6 weights).

[0013] When the well inclination angle is greater than 60 degrees and less than or equal to 90 degrees, at least 25% of the weights 10 can be pressed against the head 32 to form a sealing pair (specifically 1-3).

[0014] The above describes a universal fixed valve for oil pumps, which is suitable for oil wells with all inclination angles and orientations. More importantly, this universal fixed valve for oil pumps does not require energy storage devices such as springs for forced sealing, and will not cause unnecessary impact due to the thrust of springs, etc. Relying on gravity sealing, the impact force is smaller.

[0015] The advantages of this invention compared to existing technologies are as follows:

[0016] This invention ensures the normal operation of the oil pump and is applicable to oil wells with all inclination angles and orientations. More importantly, the universal fixed valve of this oil pump does not require energy storage devices such as springs for forced sealing, and will not cause unnecessary impact due to the thrust of springs, etc. Relying on gravity sealing, the impact force is smaller, which completely solves the long-standing problem that has plagued traditional existing technologies for many years. The overall mechanism is simpler, more scientific and reasonable. Attached Figure Description

[0017] like Figure 1The diagram shows a conventional fixed valve. The upright position in the image represents the standard position, while the other two simulated positions are the steeply angled position and the horizontal position, respectively. Figure 1 This is provided for comparative reference only and is not part of the content of this utility model; Figure 2 The diagram shown is a structural diagram of a universal fixed valve for an oil pump in its vertical operating state; as shown... Figure 3 The diagram shown is a structural representation of a universal fixed valve for an oil pump operating at a 45-degree well inclination angle. Figure 4 The diagram shown is a structural diagram of a universal fixed valve for an oil pump in a horizontal state. In the attached diagram: 1. Valve cover; 2. Valve ball; 3. Valve seat; 4. Lower connector; 10. Counterweight; 11. Hammer tail; 20. Shaft; 30. Box; 31. Mortar; 32. End cap; 40. Lower connector; 50. Upper connector. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] like Figure 2 , Figure 3 , Figure 4As shown, the first embodiment of this utility model provides a universal fixed valve for an oil pump, including: a box 30, a sealing head 32 on the box 30, a mortise 31 on the inner wall of the box 30, a shaft 20 mounted on the mortise 31, a counterweight 10 installed inside the box 30, the counterweight 10 having a hammer tail 11, the hammer tail 11 being suspended inside the mortise 31 by the shaft 20, the mortise 31 and the shaft 20 limiting the degree of freedom of the counterweight 10, the counterweight 10 can only swing around the shaft 20 inside the box 30, the swing trajectory of the counterweight 10 inside the box 30 is the longitudinal axis tangent plane where the center line of the mortise 31 is located, the counterweight 10, the shaft 20 and the box 30 together constitute an independent working body, the independent working bodies are sequentially connected to form a tool string, the lowermost independent working body in the tool string has a lower connector 40 installed below it, and the uppermost independent working body in the tool string has an upper connector 50 installed on it.

[0022] Preferably, the arrangement of each independent working body in the tool string is as follows: taking the first independent working body as a reference, the mortise 31 of the next independent working body is staggered by the same angle in the same rotation direction according to the angular position of the mortise 31 of the previous independent working body. The rotation direction of the hammer 10 can be continuous clockwise or continuous counterclockwise.

[0023] Preferably, the number of independent workpieces in a toolchain is 4-12.

[0024] Preferably, the angle between the mortises 31 of the independent working bodies is 30 degrees to 90 degrees.

[0025] Under the limiting action of shaft 20 and mortar 31, the counterweight 10 can accurately close to the head 32 to form a sealing pair. It has different working states when the well inclination angle is different. The specific principle is as follows:

[0026] like Figure 2 As shown, when the well inclination angle is less than or equal to 30 degrees, all the counterweights 10 can be pressed against the head 32 to form a sealing pair (specifically 4-12), and the sealing capacity is sufficient.

[0027] like Figure 3 As shown, when the well inclination angle is greater than 30 degrees and less than or equal to 60 degrees, at least half or more of the weights 10 can fall under gravity and press against the head 32 to form a sealing pair (specifically 2-6), which provides sufficient sealing capacity.

[0028] like Figure 4 As shown, when the well inclination angle is greater than 60 degrees and less than or equal to 90 degrees, at least 25% of the counterweights 10 can be pressed against the head 32 to form a sealing pair (specifically 1-3), and the sealing capacity is sufficient.

[0029] The above embodiments take four independent working bodies in the toolchain as an example. The more independent working bodies there are, the more redundant the sealing and safety capabilities.

[0030] Although embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for this utility model. Other modifications can be readily implemented by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and examples shown and described herein.

[0031] In the description of this utility model, it should be noted that the term "motion" should be interpreted broadly. It can refer to motion by pulling or dragging by external forces, motion by its own kinetic energy, or motion by the interaction of electromagnetic or magnetic energy. In specific implementation, it can be regarded as the relative motion between the two. When the moving object is stationary, it can refer to the motion of the object opposite it.

Claims

1. A universal fixed valve for an oil pump, characterized in that, include: A box (30) is provided with a sealing head (32). A mortise (31) is provided on the inner wall of the box (30). A shaft (20) is installed on the mortise (31). A counterweight (10) is installed inside the box (30). The counterweight (10) is provided with a hammer tail (11). The hammer tail (11) is suspended in the mortise (31) by the shaft (20). The mortise (31) and the shaft (20) limit the degree of freedom of the counterweight (10). The counterweight (10) can only... The weight (10) swings around the shaft (20) inside the box (30). The swing trajectory of the weight (10) inside the box (30) is the longitudinal axis tangent of the center line of the mortar (31). The weight (10), shaft (20), and box (30) together constitute an independent working body. The independent working bodies are connected in sequence to form a tool string. The lowermost independent working body in the tool string is equipped with a lower connector (40), and the uppermost independent working body in the tool string is equipped with an upper connector (50).

2. The universal fixed valve for an oil pump according to claim 1, characterized in that: The arrangement requirements for each independent working body in the tool string are as follows: taking the first independent working body as the reference, the mortar (31) of the next independent working body is staggered by the same angle in the same rotation direction according to the angular position of the mortar (31) of the previous independent working body. The rotation direction of the hammer (10) can be continuous clockwise or continuous counterclockwise.

3. The universal fixed valve for an oil pump according to claim 1, characterized in that: The number of independent workpieces in a toolchain is 4-12, and the standard is that the total angle between adjacent independent workpieces is not less than 360 degrees.

4. The universal fixed valve for an oil pump according to claim 1, characterized in that: The angle between the sockets (31) of the independent working bodies is 30 degrees to 90 degrees.

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