Wellhead hydraulic pumping unit parking, shifting, storing device and using method thereof

Abstract

The application discloses a wellhead hydraulic oil pumping unit shifting, displacement and storage device and a use method thereof, which comprises a vehicle seat, wheels and a vehicle frame installed on the vehicle seat, a rotating frame movably connected to the vehicle frame, a guide rail arranged on the rotating frame, a driving device fixer installed on the guide rail, a first lead screw installed on the driving device fixer and rotatingly fixed on the rotating frame. The basic principle of using the displacement device is to move the whole wellhead driving part upward by using special tools, remove the wellhead operation area and store the wellhead driving part at a suitable position. After the operation is completed, the wellhead driving part is transported back to the wellhead, installed and fixed, and the purpose of shifting and resetting the workover operation is achieved. The device considers the characteristics of the hydraulic oil pumping unit.

Description

Technical Field

[0001] This invention relates to the field of petroleum equipment technology, specifically to a wellhead hydraulic pumping unit relocation, displacement, and storage device and its usage method. Background Technology

[0002] As oilfield development deepens, increasing the stroke rate is commonly used to increase production in order to meet given output requirements. However, this increases the number of strokes required for rod string fatigue, significantly reducing its fatigue life and leading to frequent rod breakage accidents. This increases the number of well workovers, reduces oilfield efficiency, and severely impacts production profitability. When a well requires workover, the pumping unit needs to be removed from the wellhead cross-connector and moved to a designated location. After workover, it is then reinstalled. Currently, the common method is to use a crane to lift the pumping unit, remove the connecting bolts, and then place the unit on one side of the site. After workover is completed, it is then lifted again by the crane for installation.

[0003] Publication (Announcement) No.: CN216102151U, an auxiliary device for transporting and burying power towers, including a vehicle body and uprights. The vehicle body includes wheels and a frame. The frame is fixed to the axle between two wheels by bearing seats. A handle is provided at one end of the frame. There are at least two uprights, which are symmetrically arranged in pairs on both sides of the frame.

[0004] Publication (Announcement) No.: CN212098633U, a utility pole transport device includes a tractor body, a support frame at the front end of the tractor body, a hinge seat, a lifting column, a connecting seat at the front end of the lifting column, several fixed columns at the rear end of the lifting column, a bearing frame, two bearing frames, a hydraulic cylinder, a buffer plate, a movable trolley, an arc-shaped plate on the movable trolley, the hinge seat is located on the top of the support frame, the front end of the lifting column is hinged to the hinge seat, the two bearing frames are symmetrically arranged on the tractor body, the two ends of the hydraulic cylinder are respectively hinged to the two bearing frames, the output end of the hydraulic cylinder is hinged to the connecting seat, the buffer plate is located at the rear end of the tractor body, and the movable trolley is located behind the tractor body.

[0005] Publication (Announcement) No.: CN219237110U, a door and window transfer vehicle includes a chassis, a trapezoidal support frame installed on the chassis, a guide frame fixed on the chassis, a lifting frame installed on the guide frame, a drive mechanism for driving the lifting frame to move up and down installed on the trapezoidal support frame, and suction cup assemblies arranged symmetrically in a figure-eight shape fixed on both sides of the lifting frame.

[0006] The aforementioned inventions, failing to consider the requirements of oilfield operations and the characteristics of hydraulic pumping units, cannot meet the requirements for relocation and displacement of hydraulic pumping unit wellhead drive systems. Even with crane assistance, the process is time-consuming and labor-intensive, poses inherent safety hazards, and suffers from drawbacks such as the drive unit's inability to detach from the wellhead, the need for side-mounted storage, and the inability to guarantee the accuracy of the hydraulic cylinder. Furthermore, the lack of a dedicated fixture and the absence of process flow and equipment design tailored to oilfield relocation needs prevent their application to the displacement of hydraulic pumping unit wellhead drive systems.

[0007] Traditional methods of transferring and moving pumping units have the following problems: 1. Each well operation requires the use of a crane twice, increasing the operating costs of the oilfield; 2. It is unsafe, as cranes are not specialized equipment and connections are unreliable. Pumping units are slender rods, and there are safety hazards in attaching ropes, loosening bolts, and placing them; 3. The pumping unit drive unit needs to be stored on its side, which not only takes up space but also poses risks of structural damage and seal damage, making it difficult to reuse the pumping unit.

[0008] This invention reduces the cost of relocation operations for hydraulic pumping unit wellhead drive systems by using a single, multi-functional device. It improves safety through specialized clamps and protects the hydraulic pumping unit wellhead drive system by providing vertical storage, which facilitates post-operation reset and reuse. Existing technologies cannot achieve the same technical effects as this invention. Summary of the Invention

[0009] The purpose of this invention is to provide a wellhead hydraulic pumping unit relocation, displacement, and storage device to address the aforementioned deficiencies in the prior art. This device can provide comprehensive services such as disassembly, installation, temporary storage, and relocation for hydraulic pumping units that are directly installed and driven at the wellhead.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A wellhead hydraulic pumping unit relocation, shifting, and storage device includes a seat, wheels mounted on the seat, and a frame; a rotating frame is movably connected to the frame, a guide rail is provided on the rotating frame, a drive device holder is mounted on the guide rail, and a first lead screw is mounted on the drive device holder, the first lead screw being rotatably fixed on the rotating frame.

[0012] The first lead screw is fixed to the rotating frame at both ends by bearings.

[0013] The rotating frame is movably connected to the lower end of the vehicle frame via a hinge, and the middle part is connected via a rotating frame drive mechanism.

[0014] The rotating frame drive mechanism includes a second lead screw, a first universal joint fork mounted on the frame, and a second universal joint fork mounted on the rotating frame. The first universal joint fork is connected to the second lead screw via an internal thread, and the second universal joint fork is connected to the second lead screw via an internal locking bearing.

[0015] The drive device retainer includes multiple jaws and a body, the jaws are movably connected to the body, the body is mounted on a guide rail, and the body is threadedly engaged with a first lead screw.

[0016] The claws are arranged in pairs at both ends of the device body, and each pair of claws is locked with bolts and nuts, thereby fixing the hydraulic pumping unit wellhead drive system.

[0017] The claws are equipped with rubber pads to increase the friction generated during clamping, thereby further improving the stability of the device.

[0018] The seat has a triangular body with an opening facing the drive unit retainer.

[0019] The seat has three wheels mounted on its bottom.

[0020] A method for using a wellhead hydraulic pumping unit relocation, displacement, and storage device includes the following steps.

[0021] S1. Park the moving vehicle in a suitable position, fix the pumping unit wellhead drive device on the drive device holder, remove the connection between the sucker rod and the piston rod, and remove the connecting bolts between the pumping unit and the wellhead cross-connector.

[0022] S2. Rotate the first lead screw to move the drive device retainer and the pumping unit pile together upwards;

[0023] S3. Rotate the second lead screw to adjust the center of gravity and stabilize the assembly.

[0024] S4. Move the trolley to reposition, move, or store the oil pumping unit.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. Solves the displacement problem during well workover operations of hydraulic pumping units directly driven by the wellhead. Using this device, the drive unit can be removed without a crane, which is safe and reliable.

[0027] 2. Solve the storage problem of hydraulic pumping units directly driven by the wellhead. A special vertical storage device is used to prevent damage to the pumping unit seals and space occupation, ensuring the pumping unit is stored without contamination.

[0028] 3. The reset problem has been solved, which makes it easier to install the hydraulic pumping unit, increases the installation speed, and reduces costs;

[0029] 4. It is reusable. The equipment is specialized and lightweight, and can be transported to the work site using an oilfield duty vehicle, which can greatly reduce the operating costs of the oilfield. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of a wellhead hydraulic pumping unit relocation, displacement, and storage device according to the present invention;

[0031] Figure 2 This is a schematic diagram of the working mechanism structure of the present invention;

[0032] Figure 3 This is a top view of the structure of the present invention;

[0033] In the diagram: 1. Pumping unit drive unit; 2. Rotating frame; 3. Rotating frame drive mechanism; 4. Frame; 5. Wheel; 6. Seat; 7. First lead screw; 8. Drive unit retainer; 9. Second lead screw; 10. First universal joint fork; 11. Guide rail; 12. Second universal joint fork; 13. Pallet; Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] This invention provides a device for relocating, moving, and storing a wellhead hydraulic pumping unit. The basic principle of this device is to use specialized tools to remove the entire wellhead drive unit from the wellhead work area and store it in a suitable location. After the work is completed, it is transported back to the wellhead for installation, thus achieving the purpose of relocation and repositioning during well workover operations. A detailed description will follow with reference to the accompanying drawings.

[0036] Example 1:

[0037] Please refer to Figure 1-3 A wellhead hydraulic pumping unit relocation, shifting, and storage device includes a seat, wheels 5 and a frame 4 mounted on the seat 6, a rotating frame 2 movably connected to the frame 4, a guide rail 11 provided on the rotating frame 2, a drive device holder 8 mounted on the guide rail 11, a first lead screw 7 mounted on the drive device holder 8, the two ends of the first lead screw 7 being fixed to the rotating frame 2 by locking bearings and bearing seats, and the drive device holder 8 being able to move up and down on the guide rail 11 by rotating the first lead screw 7.

[0038] The seat 6 is a triangular body with an opening facing the drive unit retainer 8, which facilitates the device's contact with the hydraulic pumping unit wellhead drive system. The seat 6 is equipped with three wheels 5 to support the overall weight of the device.

[0039] The rotating frame 2 is movably connected to the lower end of the frame 4 via a hinge, and the middle part is connected via the rotating frame drive mechanism 3.

[0040] The rotating frame drive mechanism 3 includes a second lead screw 9, a first universal joint fork 10 mounted on the frame 4, and a second universal joint fork 12 mounted on the rotating frame 2. The first universal joint fork 10 is connected to the second lead screw 9 by a nut, and the second universal joint fork 12 is connected to the second lead screw 9 by a locking bearing. Rotating the second lead screw 9 can realize the transformation of the rotating frame 2 from a vertical position to an inclined position or vice versa, thereby adjusting the center line of gravity of the assembly.

[0041] The drive device retainer 8 includes multiple jaws 13 and a body. The jaws 13 are movably connected to the body. The jaws 13 are arranged in pairs at both ends of the body. Each pair of jaws 13 is locked by bolts and nuts, thereby fixing the hydraulic pumping unit wellhead drive system. The body is mounted on the guide rail 11 and is threadedly engaged with the first lead screw 7.

[0042] The claw 13 is equipped with a rubber pad to increase the friction generated during clamping, thereby further improving the stability of the device.

[0043] Example 2:

[0044] This embodiment provides a method for using a wellhead hydraulic pumping unit relocation, displacement, and storage device:

[0045] S1. Park the moving vehicle in a suitable position, fix the pumping unit wellhead drive device on the drive device holder, remove the connection between the sucker rod and the piston rod, and remove the connecting bolts between the pumping unit and the wellhead cross-connector.

[0046] S2. Rotate the first lead screw to move the drive device retainer and the pumping unit pile as a whole upward by 100-200mm;

[0047] S3. Rotate the second lead screw to adjust the center of gravity and stabilize the assembly.

[0048] S4. Move the trolley to reposition, move, or store the oil pumping unit.

[0049] The installation of the pumping unit can be completed by reversing the process. The pumping unit can then be stored by placing the vehicle body along with the pumping unit in the storage area.

[0050] The overall weight of the pumping unit drive unit (including hydraulic oil and piston rod) is around 360 kg. It is only relatively tall, at 7 to 8 meters. Therefore, the strength design of its carrier vehicle can generally meet the requirements. As long as attention is paid to its stability design, it is sufficient.

[0051] All components not discussed in detail in this application, as well as the connection methods of these components, are well-known technologies in this field. They can be directly applied and will not be elaborated further.

[0052] In this invention, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," 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 invention and simplifying the description, and do not indicate or imply that the device or unit 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 invention.

[0054] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for relocating, moving, and storing a wellhead hydraulic pumping unit, comprising a seat, wheels mounted on the seat, and a frame; characterized in that, A rotating frame is movably connected to the frame. A guide rail is provided on the rotating frame. A drive device holder is installed on the guide rail. A first lead screw is installed on the drive device holder. Both ends of the first lead screw are fixed to the rotating frame by locking bearings and bearing seats. The drive device holder moves up and down on the guide rail by the rotation of the first lead screw. The vehicle seat has a triangular body and an opening in the direction of the drive unit holder to facilitate contact between the device and the hydraulic pumping unit wellhead drive system. The vehicle seat is equipped with three wheels. The rotating frame is movably connected to the lower end of the vehicle frame via a hinge, and the middle part is connected via a rotating frame drive mechanism; The rotating frame drive mechanism includes a second lead screw, a first universal joint fork mounted on the frame, and a second universal joint fork mounted on the rotating frame. The first universal joint fork is connected to the second lead screw via a nut, and the second universal joint fork is connected to the second lead screw via a locking bearing. Rotating the second lead screw enables the rotating frame to change from a vertical position to an inclined position or vice versa, thereby adjusting the center line of gravity of the assembly. The drive unit retainer includes multiple jaws and a body. The jaws are movably connected to the body. The jaws are arranged in pairs at both ends of the body. Each pair of jaws is locked by bolts and nuts, thereby fixing the hydraulic pumping unit wellhead drive system. The body is mounted on a guide rail and is threaded with the first lead screw. The claw is equipped with a rubber pad to increase the friction generated during clamping; The method of using this device includes: S1. Park the moving vehicle in a suitable position, fix the pumping unit wellhead drive device on the drive device holder, remove the connection between the sucker rod and the piston rod, and remove the connecting bolts between the pumping unit and the wellhead cross-connector. S2. Rotate the first lead screw to move the drive device retainer and the pumping unit drive cylinder together 100-200mm upward; S3. Rotate the second lead screw to adjust the center of gravity and stabilize the assembly. S4. Move the trolley to make way for, move or store the oil pumping unit; The reverse operation involves installing the pumping unit and placing the vehicle body together in the pumping unit storage area to store the pumping unit.

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