Continuous pumping equipment for oil testing wells

Abstract

The application discloses a kind of oil testing well continuous pumping equipment, it is related to the technical field of oil and gas equipment, the application is aimed at solving the problem of affecting efficiency caused by the need to disassemble equipment due to adjusting the parameters of pump, the application includes: hydraulic motor and path constraint, hydraulic motor and path constraint are relatively fixed;The output shaft of hydraulic motor is connected with turntable, and the turntable is provided with a chute, which is arranged along the radial direction of the turntable;The path constraint is provided with a slide, which includes two parallel straight segments, two first arc segments at both ends of the straight segments, and a second arc segment on the opposite sides of the two first arc segments;A switching plate is arranged in the slide;When the switching plate is in the first position, the straight segments and the first arc segments are in communication and form a ring;When the switching plate is in the second position, the straight segments and the second arc segments are in communication, forming a longer ring;A support rod is arranged in the slide and the chute, and the support rod is connected with a connecting rod, which is used to connect the pump rod of the oil pump.

Description

Technical Field

[0001] This invention relates to the technical field of oil and gas equipment, and specifically to a continuous pumping equipment for oil well testing. Background Technology

[0002] Well testing is a specialized test conducted on a well to determine its production capacity and to study reservoir parameters and dynamics. It is an important means of understanding reservoir dynamics. Its purpose is to evaluate the production dynamics of oil and gas wells or reservoirs and obtain formation parameters through the test data of oil and gas wells.

[0003] Well testing requires the installation of pumping units on the surface. A problem with existing technology is the difficulty in disassembling and assembling traditional equipment. Since well testing necessitates changes to pump parameters such as pump frequency, pump range, and pump diameter, each parameter adjustment requires disassembly and reassembly of the equipment, making the process extremely cumbersome and labor-intensive. Summary of the Invention

[0004] To address the aforementioned problem—namely, the efficiency impact caused by the need to disassemble and reassemble equipment when adjusting pump parameters—this invention proposes a continuous pumping device for oil testing wells, comprising:

[0005] A hydraulic motor and a path constraint, wherein the hydraulic motor and the path constraint are fixed relative to each other;

[0006] The output shaft of the hydraulic motor is connected to a turntable, and the turntable is provided with a sliding groove arranged radially along the turntable; the output shaft of the hydraulic motor is perpendicular to the turntable and connected to the center of the turntable.

[0007] The path constraint is provided with a slide, which includes two parallel straight line segments, two first arc segments located at both ends of the straight line segments, and second arc segments on opposite sides of the two first arc segments.

[0008] A switching plate is provided inside the slide; when the switching plate is in the first position, the straight segment and the first arc segment are connected to form a ring; when the switching plate is in the second position, the straight segment and the second arc segment are connected to form a longer ring.

[0009] A support rod is inserted into the slide rail and the slide groove. The support rod is connected to a connecting rod, which is used to connect the pump rod of the oil pump.

[0010] A further configuration of the present invention includes a liftable lifting beam, the path constraint is fixedly connected to the lifting beam, the lifting beam is also fixedly connected to a support platform, and the hydraulic motor is fixedly mounted on the support platform.

[0011] A further configuration of the present invention includes a base and a gantry frame, the gantry frame being fixed to the base, the uprights of the gantry frame being provided with slide rails, the lifting beam cooperating with the slide rails, and a vertical lead screw being provided in the middle of the gantry frame, the lead screw cooperating with the lifting beam.

[0012] A further feature of the present invention is that: the two columns of the gantry frame are provided with locking blocks, the locking blocks are provided with locking holes, and the two ends of the lifting beam are provided with linear actuators, the pins of the linear actuators being adapted to the locking holes.

[0013] A further feature of the present invention is that the two sidewalls of the straight segment are provided with notches for concealing the switching plate.

[0014] A further provision of the present invention is that the switching plate is disposed at the intersection of the first arc segment and the second arc segment.

[0015] A further provision of the present invention is that: a second motor is provided on the surface of the path constraint device away from the turntable, and the output shaft of the second motor is fixedly connected to the switching plate to control the rotation of the switching plate.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. For the oil pump, the power source (i.e., the connecting rod and the mechanism driving the connecting rod) is height-adjustable, providing ample working space for pump replacement without dismantling the power source itself. This saves significant time and reduces labor intensity and operational risks. Existing technologies typically use hydraulic cylinders directly connected to the oil pump, requiring disassembly and relocation of the hydraulic cylinders during replacement. 2. Pump stroke can be adjusted without replacing the equipment. Existing technologies require replacing equipment parts, but this invention adjusts the pump stroke by changing the position of a switching plate, eliminating the need for disassembly and significantly improving efficiency. It's important to note that while existing technologies using hydraulic cylinders can control different extension distances, they require equipment modification, resulting in higher costs. This solution eliminates these issues because the pump stroke is entirely limited by the slide rail. The desired pump stroke can be pre-designed by adjusting the slide rail dimensions, and only the hydraulic motor needs to be continuously rotated. This offers a significant advantage in terms of equipment complexity. Furthermore, the hydraulic cylinder needs to be installed above the oil pump, and this higher installation position can complicate installation. 3. The hydraulic motor makes it very easy to adjust the speed of the turntable, which also makes it easier to change the pump frequency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a preferred embodiment of a continuous pumping device for oil well testing according to the present invention;

[0019] Figure 2 This is a schematic diagram of the path constraint in this invention;

[0020] Figure 3 This is a schematic diagram of the path constraint switching plate in the first position in this invention;

[0021] Figure 4 This is a schematic diagram of the structure of the path constraint switching plate in the second position in this invention.

[0022] Reference numerals in the attached drawings: 1. Base; 11. Reducer; 12. First motor; 2. Gantry frame; 21. Slide rail; 22. Locking block; 23. Lock hole; 3. Lead screw; 4. Lifting beam; 41. Linear actuator; 42. Support platform; 5. Hydraulic motor; 6. Turntable; 61. Slide groove; 7. Path constraint; 71. Straight segment; 72. First arc segment; 73. Second arc segment; 74. Switching plate; 81. Support rod; 82. Connecting rod. Detailed Implementation

[0023] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0024] See Figures 1-4 The present invention proposes a continuous pumping device for oil testing wells, including a base 1, a gantry frame 2, a lifting beam 4, a support rod 81 and a connecting rod 82.

[0025] The base 1 is fixed to the ground, and the gantry frame 2 is fixed to the base 1. A vertical lead screw 3 is installed in the middle of the gantry frame 2. The top of the lead screw 3 is rotatably connected to the gantry frame 2, and the bottom of the lead screw 3 is connected to the reducer 11 installed on the base 1. The input end of the reducer 11 is connected to the first motor 12, which drives the lead screw 3 to rotate.

[0026] The lifting beam 4 engages with both the lead screw 3 and the two vertical slide rails 21 on the gantry frame 2. When the lead screw 3 rotates, the lifting beam 4 can move up and down. Linear actuators 41 are installed at both ends of the lifting beam 4. The pins of the linear actuators 41 pass horizontally and vertically through the lifting beam 4. Correspondingly, two locking blocks 22 are installed on the two columns of the gantry frame 2, each with a locking hole 23. The locking holes 23 are adapted to the pins of the linear actuators 41; when the pins are inserted into the locking holes 23, the up and down movement of the lifting beam 4 is restricted.

[0027] A lifting beam 4 is fixedly connected to a support platform 42, and a hydraulic motor 5 is fixedly mounted on the top of the support platform 42. The output shaft of the hydraulic motor 5 extends toward the lifting beam 4 and is connected to a turntable 6. The output shaft of the hydraulic motor 5 is perpendicular to the turntable 6 and is connected to the center of the turntable 6. The turntable 6 is provided with a slide groove 61, which is arranged radially along the turntable 6.

[0028] The path constraint 7 is a block, positioned between the lifting beam 4 and the turntable 6. A slide rail is provided on the surface of the path constraint 7 facing the turntable 6. The slide rail includes two parallel straight segments 71, two first arc segments 72 located at both ends of the straight segments 71, and second arc segments 73 on opposite sides of the two first arc segments 72. The straight segments 71, the first arc segments 72, and the second arc segments 73 are connected. A switching plate 74 is positioned at the intersection of the first arc segments 72 and the second arc segments 73. When the switching plate 74 is in the first position, the straight segment 71 connects with the first arc segment 72 and isolates the second arc segment 73, forming a loop (the loop can be understood by referring to the shape of a standard 400-meter running track). When the switching plate 74 is in the second position, the straight segment 71 connects with the second arc segment 73 and isolates the first arc segment 72, forming a longer loop. The rotation of the switching plate 74 is achieved by a second motor. The second motor is located on the surface of the path constraint device 7 away from the turntable 6 and is a standard product. Figure 2 The second motor is not shown. The output shaft of the second motor is fixedly connected to the switching plate 74 to control the rotation of the switching plate 74.

[0029] The support rod 81 is horizontally positioned and passes through the slide rail and groove 61. When the turntable 6 rotates, the slide rail constrains the movement path of the support rod 81, and the support rod 81 moves along the groove 61 simultaneously. Therefore, the above transmission process converts the circular motion of the turntable 6 into the reciprocating up-and-down motion of the support rod 81. Furthermore, the connecting rod 82 is rotatably connected to the support rod 81. The connecting rod 82 is positioned between the turntable 6 and the path constraint device 7, and is used to connect the pump rod of the oil pump.

[0030] Furthermore, notches are provided on the two side walls of the straight section 71 to conceal the switching plate 74. When the switching plate 74 is in the first position and the second position, the end of the switching plate 74 is hidden in the notch, making the movement of the support rod 81 as smooth as possible.

[0031] Based on this, the present invention necessarily includes a hydraulic power station for controlling and providing power to the hydraulic motor 5. Typically, the power station includes a controller for providing a pressure pipeline system and controlling valves, pumps, and other equipment; however, this part is prior art and will not be described in detail. It also includes an electrical control cabinet for controlling the first motor 12 and the second motor. Based on conventional design concepts, the controller can also be integrated and assembled with the aforementioned control station.

[0032] The specific implementation process is as follows: First, the switching plate 74 is in the first position, and the pin engages with the locking hole 23 to fix the position of the lifting beam 4. Then, the hydraulic motor 5 drives the turntable 6 to rotate, which in turn drives the support rod 81 to rotate. Under the constraint of the path constraint device 7, the support rod 81 can only move up and down, which in turn drives the pump rod of the oil pump through the connecting rod 82 to move, thus realizing the oil pumping operation. After the data collection is completed, the hydraulic motor 5 stops, the switching plate 74 is adjusted to the second position, and then the hydraulic motor 5 starts working again. At this time, the up and down stroke of the connecting rod 82 will be longer, thus achieving the effect of adjusting the pump stroke. After the data collection is completed, if it is necessary to change the pump diameter, the connecting rod 82 is separated from the pump rod of the oil pump, the control pin is disengaged from the locking hole 23, and the lifting beam 4 is raised further through the lead screw 3. When the lifting beam 4 is far enough away from the ground, the oil pump can be replaced. After the oil pump is replaced, the lifting beam 4 is lowered and the pin is reinserted into the locking hole 23. After connecting the connecting rod 82 and the new pump rod, the testing can continue.

[0033] Based on the understanding of the path constraint 7, a third arc segment, a fourth arc segment, etc., can be set on the basis of the second arc segment 73, and a corresponding switching plate 74 can be matched. This can further increase the stroke of the connecting rod 82 in the up and down reciprocating motion, as long as the structural dimensions allow it.

[0034] The advantages of this invention are: 1. For the oil pump, the power source (i.e., the connecting rod 82 and the mechanism driving the connecting rod 82) is liftable, providing ample working space for pump replacement without dismantling the power source itself. This saves significant time and reduces labor intensity and operational risks. In existing technologies, hydraulic cylinders are typically used to directly connect to the oil pump, requiring disassembly and movement during replacement. 2. Pump stroke can be adjusted without replacing the equipment. Existing technologies require replacing equipment parts, but this invention allows for pump stroke adjustment by changing the position of the switching plate 74, eliminating the need for disassembly and assembly and greatly improving efficiency. It is particularly important to note that while existing technologies using hydraulic cylinders can control different extension distances, they require equipment modification, resulting in higher costs. This solution eliminates these issues because the pump stroke is entirely limited by the slide rail. The desired pump stroke can be pre-designed by adjusting the slide rail dimensions, and only the hydraulic motor 5 needs to be continuously rotated. This significantly reduces the complexity of the equipment. Furthermore, the hydraulic cylinder needs to be installed above the oil pump, and the high installation position will also cause inconvenience to the installation operation. 3. Using the hydraulic motor 5, the speed of the turntable 6 can be adjusted very easily, which also makes it easier to change the pump frequency.

[0035] Although the invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0036] In the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention according to the specific circumstances.

[0038] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0039] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A well testing well continuous pumping apparatus, characterized in that, include: A hydraulic motor (5) and a path constraint (7) are fixed relative to each other. The output shaft of the hydraulic motor (5) is connected to the turntable (6), and the turntable (6) is provided with a slide groove (61) which is arranged radially along the turntable (6); the output shaft of the hydraulic motor (5) is perpendicular to the turntable (6) and connected to the center of the turntable (6). The path constraint (7) is provided with a slide, which includes two parallel straight line segments (71), two first arc segments (72) located at both ends of the straight line segments (71), and second arc segments (73) on opposite sides of the two first arc segments (72). A switching plate (74) is provided inside the slide; when the switching plate (74) is in the first position, the straight segment (71) is connected to the first arc segment (72) and forms a ring; when the switching plate (74) is in the second position, the straight segment (71) is connected to the second arc segment (73) and forms a longer ring. A support rod (81) is inserted into the slide and the groove (61). The support rod (81) is connected to a connecting rod (82). The connecting rod (82) is used to connect the pump rod of the oil pump.

2. The oil testing well continuous pumpdown apparatus of claim 1, wherein: It includes a liftable lifting beam (4), the path constraint (7) is fixedly connected to the lifting beam (4), the lifting beam (4) is also fixedly connected to the support platform (42), and the hydraulic motor (5) is fixed on the support platform (42).

3. The oil testing well continuous pumpdown apparatus of claim 2, wherein: Includes a base (1) and a gantry frame (2). The gantry frame (2) is fixed on the base (1). The uprights of the gantry frame (2) are equipped with slide rails (21). The lifting beam (4) cooperates with the slide rails (21). A vertical screw (3) is provided in the middle of the gantry frame (2). The screw (3) cooperates with the lifting beam (4).

4. The oil testing well continuous pumpdown apparatus of claim 3, wherein: The two columns of the gantry frame (2) are provided with locking blocks (22), the locking blocks (22) are provided with locking holes (23), and the two ends of the lifting beam (4) are provided with linear actuators (41), the pins of the linear actuators (41) are adapted to the locking holes (23).

5. The oil testing well continuous pumpdown apparatus of claim 1, wherein: The two sidewalls of the straight segment (71) are provided with notches for concealing the switching plate (74).

6. The continuous pumping equipment for oil testing wells according to claim 1, characterized in that: The switching plate (74) is located at the intersection of the first arc segment (72) and the second arc segment (73).

7. The production string of claim 1, wherein: The path constraint (7) has a second motor on its surface away from the turntable (6). The output shaft of the second motor is fixedly connected to the switching plate (74) to control the rotation of the switching plate (74).

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