Movable pumping unit base
By designing a pumping unit base structure that includes a base, support block, hydraulic press, adjusting screw and rollers, the problem of difficult pumping unit position adjustment is solved, realizing the time-saving and labor-saving movement of the pumping unit and the centering of the polished rod, ensuring stable production of oil wells.
Patent Information
- Application Number
- CN202521648029.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-05
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-05
AI Technical Summary
The movement of the pumping unit base causes misalignment between the polished rod and the wellhead, resulting in wear of the seals and uneven wear between the sucker rod and tubing, which affects oil well production. Existing correction methods consume a lot of manpower and may damage the foundation.
The structure includes a base, support block, hydraulic press, adjusting screw, nut, rollers and roller bracket. The rolling friction between the rollers and the pumping unit foundation is achieved by the hydraulic press supporting the rollers and the rotation of the adjusting screw, thereby reducing movement resistance.
It enables time-saving and labor-saving movement of the pumping unit, reduces the labor intensity of operators, avoids foundation damage, ensures alignment of the polished rod with the wellhead, and guarantees normal oil well production.
Smart Images
Figure CN224679478U_ABST
Abstract
Description
Technical Field
[0001] This utility model is a device used on oilfield pumping wells, which is a mobile pumping unit base. Background Technology
[0002] Oil well pumping requires a pumping unit. The lower part of the pumping unit is the base, which is mounted on a foundation. Due to prolonged operation, loosening of fixing screws and other reasons, the pumping unit base may shift, causing the polished rod suspended from the pumping unit's nozzle to misalign with the wellhead. This results in misalignment between the polished rod axis and the polished rod seal axis. On one hand, this causes rapid wear of the seals in the polished rod seal, leading to wellhead oil leakage and environmental pollution; on the other hand, it causes uneven wear between the sucker rod and tubing. Both of these problems will prevent the oil well from producing normally, requiring the pumping unit's position to be corrected to maintain production.
[0003] The current method for correcting the position of the pumping unit is to loosen the connecting screws between the base and the pumping unit foundation, and then use a tractor to pull the base. Since the base and the pumping unit foundation are subject to sliding friction, the friction is large, the tractor requires a lot of power, and sometimes it can even damage the pumping unit foundation. Summary of the Invention
[0004] The purpose of this invention is to design a movable pumping unit base, which allows for convenient and quick movement of the pumping unit, aligning the smooth rod suspended from the pumping unit's head with the wellhead, overcoming the aforementioned problems, and ensuring long-term normal production of the oil well.
[0005] The purpose of this utility model is achieved as follows: it includes a base, support blocks, a hydraulic press, an adjusting screw, nuts, a pumping unit foundation, rollers, and roller supports. The pumping unit foundation is placed at the well site, and the base is installed on the pumping unit foundation. 2-5 sets of support blocks are symmetrically arranged on both sides of the base. A hydraulic press is installed between the support blocks and the pumping unit foundation. 2-5 sets of nuts are symmetrically arranged on both sides of the base. The external thread of the adjusting screw engages with the internal thread of the nut. The rollers are installed on the roller supports and can rotate on the roller supports. The lower part of the adjusting screw is inserted into the upper part of the roller supports. Rotating the adjusting screw can move the rollers up and down.
[0006] The beneficial effects of this utility model are: when it is necessary to move the pumping unit, the rollers can be lowered onto the pumping unit base to move the pumping unit installed on the base to a position where the smooth rod suspended on the pumping unit head is aligned with the wellhead. The friction between the base and the pumping unit base has been changed from sliding friction to rolling friction. Therefore, moving the pumping unit is time-saving and labor-saving, the labor intensity of the operators is low, and the pumping unit base will not be damaged. Attached Figure Description
[0007] Figure 1 This is a front view of an embodiment of this utility model.
[0008] Figure 2 yes Figure 1 Top view.
[0009] Figure 3 yes Figure 1 A cross-sectional view of the middle parts 4, 5, 7, and 9 assembled into one unit. Detailed Implementation
[0010] The following figures illustrate embodiments of this utility model.
[0011] As shown in the figure, the embodiment of this utility model includes a base 1, support blocks 2, a hydraulic press 3, an adjusting screw 4, a nut 5, a pumping unit foundation 6, rollers 7, and roller brackets 9. The pumping unit foundation 6 is placed at the well site, and the base 1 is installed on the pumping unit foundation 6. Two to five sets of support blocks 2 are symmetrically arranged on both sides of the base 1. Figure 1 , 2 There are 3 sets in the middle, that is, 3 support blocks on each side. A hydraulic press 3 (jack) is installed between the support block 2 and the pumping unit foundation 6. 2-5 sets of nuts 5 are symmetrically set on both sides of the base 1. The external thread of the adjusting screw 4 is screwed into the internal thread of the nut 5. The roller 7 is installed on the roller bracket 9. The roller 7 can rotate on the roller bracket 9. The lower part of the adjusting screw 4 is inserted into the upper part of the roller bracket 9. Rotating the adjusting screw 4 can make the roller 7 move up and down.
[0012] When the pumping unit is working, the base 1 and the pumping unit foundation 6 are connected as one unit by screws. Before moving the pumping unit, first loosen the connecting screws between the base 1 and the pumping unit foundation 6, then use the hydraulic press 3 to lift the base 1 so that the base 1 is away from the pumping unit foundation 6, then rotate the adjusting screw 4 so that the roller 7 contacts the pumping unit foundation 6 downward (the pumping unit foundation 6 is equipped with a slide rail 8), then release the hydraulic press 3 from lifting the base 1, and then pull the base 1. The pulling force is the rolling friction between the roller 7 and the pumping unit foundation 6. This force is much smaller than the sliding friction. Therefore, this utility model can move the pumping unit in a time-saving and labor-saving manner, and can move the pumping unit to the required position relatively easily.
[0013] After the mobile pumping unit is finished, use the hydraulic press 3 to lift the base 1, reverse the adjusting screw 4 to make the roller 7 move upward and disengage from the pumping unit base 6, then release the hydraulic press 3 from supporting the base 1, and tighten the connecting screws between the base 1 and the pumping unit base 6. The pumping unit can then work normally to pump oil.
Claims
1. A movable pumping unit base, comprising a base (1), a support block (2), a hydraulic press (3), an adjusting screw (4), a nut (5), a pumping unit foundation (6), rollers (7), and roller brackets (9), wherein the pumping unit foundation (6) is placed at the well site, and the base (1) is installed on the pumping unit foundation (6), characterized in that: Two to five sets of support blocks (2) are symmetrically arranged on both sides of the base (1). A hydraulic press (3) is installed between the support block (2) and the pumping unit foundation (6). Two to five sets of nuts (5) are symmetrically arranged on both sides of the base (1). The external thread of the adjusting screw (4) is engaged with the internal thread of the nut (5). The roller (7) is installed on the roller bracket (9). The roller (7) can rotate on the roller bracket (9). The lower part of the adjusting screw (4) is inserted into the upper part of the roller bracket (9). Rotating the adjusting screw (4) can make the roller (7) move up and down.