RU122048U1 - INSTALLATION FOR EDITING A POLISHED STEM OF A ROD OR A ROD OF A WELL PUMP - Google Patents

Abstract

1. A device for straightening a polished rod or rods of a borehole pump, containing a frame and movable and fixed stops for a polished rod or rod installed on it, a power mechanism associated with a movable stop, characterized in that the power mechanism is made in the form of a screw-nut pair, the frame is made in the form of a triangular isosceles frame with a nut of the power mechanism at the apex connecting equal hips of the frame and fixed stops in the remaining vertices of the frame, while the movable stop is rotatably connected to the end of the screw, which is made with the possibility of longitudinal movement with rotation in the nut perpendicular to the opposite the base of the frame. ! 2. The device according to claim 1, characterized in that the thighs and the base of the frame are rigidly or detachably connected to the fixed stops and the nut.

Description

The proposal relates to the oil and gas industry, in particular to devices for straightening a polished rod or rods of a borehole pump using plastic deformation.

A device for straightening pump rods is known (see patent for utility model RU No. 75968, B21B 3/00, published: 09/10/2008), comprising mounting and extension heads located on the frame with grippers for rod ends, power cylinders with a rod connected to capture of the tensile head, and the control unit, made in the form of an acoustic emission sensor placed on the tensile head and a shielding element mounted on the frame, characterized in that the drive of the installation head is screw and allows for the movement of the heads and as efficiently as possible.

The closest is a device for straightening the rods (see patent for the invention RU No. 2201306, B21D 3/16, published: 12/20/2002) containing a frame and mounted on it movable and fixed grippers for the rod, a power hydraulic cylinder associated with a movable gripper, a control unit and means for controlling the straightening of the rod, characterized in that it is equipped with a guiding element located on the side of the power cylinder for moving gripping, preventing its rotation, a hydraulic motor and a worm gear, the input shaft of which is connected with hydraulic motor, and the output - through an overrunning clutch - with a fixed grip mounted for rotation, removable hooks, each of which is made in the form of a rod with a coupling at one end and an annular protrusion for connection with the gripper - at its other end, each grip has a groove at the end of the rod and is made with a Central channel to accommodate the mentioned removable hook.

The disadvantages of analogues are the inability to use directly at the well, the complexity of the design, low reliability and, as a consequence, the high cost of manufacturing and maintenance.

The technical task of the proposed utility model is to create a device for straightening a polished rod or rods of a downhole pump, which could be used directly at the well, which is cheap to manufacture and use, simple and reliable.

This problem is solved by a device for editing a polished rod or rods of a borehole pump, comprising a bed and movable and fixed stops for a polished rod or rod mounted on it, a power mechanism associated with the movable stop.

According to a utility model, the power mechanism is made in the form of a screw-nut pair, the bed is made in the form of a triangular isosceles frame with a power mechanism nut at the apex connecting equal frame hips and fixed stops at the other frame vertices, while the movable stop is rotatably connected to the end the screw, which is made with the possibility of longitudinal movement with rotation in the nut perpendicular to the opposite base of the frame.

In this case, the hips and the base of the frame can be connected with fixed stops and a nut both rigidly and demountably.

Figure 1 schematically shows the design of the proposed device in longitudinal section - side view; figure 2 - section BB (see figure 1) in two versions a) and b); figure 3 - view A (see figure 2).

A device for straightening a polished rod 1 (conventionally shown in Figs. 1-3) or rods 1 of a downhole pump (not shown in Fig.) Contains a frame 2 (Fig. 1) and movable 3 and fixed 4 and 5 stops for polished rod 1 or rod 1, the power mechanism 6 associated with the movable stop 3. The power mechanism 6 is made in the form of a pair of screw-nut 7 and 8, the frame 2 is made in the form of a triangular isosceles frame with a nut 8 of the power mechanism 6 at the apex connecting equal hips 9 and 10 of the frame 2, and fixed stops 4 and 5 in the remaining vertices of the frame 2. Movable the stop 3 is rotatably connected with the end of the screw 3, which is made to move longitudinally with rotation in the nut 8 perpendicular to the opposite base 11 of the frame 2. The hips 9 and 10 and the base 11 of the frame 2 can be connected to the fixed stops 4 and 5 and the nut 8 rigidly (by welding, soldering - not shown in Fig.) or detachable (by screws - not shown in Fig.). The non-separable constructions of frame 2 can be used with constant use (for example: repair crews), and collapsible ones with inconsistent (for example: maintenance crews) so that the disassembled device occupies a minimum volume during storage and transportation. For ease of rotation, the screw 7 can be equipped with a technological head 12 with a hole 13 for the handle, as well as a square and a hexagon for a wrench (not shown in Fig.). The hips 9 and 10 can be located on one side (see a) of FIG. 2) from the stops 4 (FIG. 1), 5 (a) of FIG. 2) and the nut 8 for working with thin and slightly hardened rods or rods or from two sides (see b) of FIG. 2) for working with borehole pumps used for depths greater than 300 m. At stops 3 (FIG. 1), 4 and 5 there may be cylindrical samples 14 (see b) of FIG. 2) for rods 1 or rods 1 for the same diameters or in the form of a triangular prism 15 (FIG. 3) of different diameters of rods 1 or rods 1.

The device operates as follows.

During the operation of borehole pumps, rods 1 (FIG. 1) or polished rod 1 (the most frequent accident) may be bent; for repair, bent rod 1 or rod 1 at the wellhead (in FIG. 1 the device is shown rotated 90 °) is installed frame 2 so that the curvature 16 convexity was directed towards the movable stop 3. Screwing the screw 7 with the head 12 into the nut 8 of the power mechanism 6 on the curvature 16 of the rod 1, exert a transverse load to the base 11 to plastic deformation and straightening of the rod 1 due to the stops 4 and 5 and hips 9 and 10 The field of which, by a small amount, the rod 1 is bent in the opposite direction (see patent RU No. 2021098) and maintained for half an hour. Check the curvature of the rod 1 in a straightened area around the perimeter using, for example, a reference metal meter (not shown in Fig.). If necessary, the rectification operation is repeated until the desired result is obtained. If the length of the bend 16 is greater than the length of the base 11, then the alignment begins from the upper or lower edge of the bend 16, sequentially straightening the bend 16 sections and moving the frame, respectively, up or down to straighten the bend 16 over the entire length.

The proposed device for editing a polished rod or rods of a downhole pump is simple, reliable and cheap to manufacture and use and can be used directly at the well.

Claims (2)

1. A device for straightening a polished rod or rods of a borehole pump, comprising a bed and movable and fixed stops for a polished rod or rod mounted on it, a power mechanism associated with a movable stop, characterized in that the power mechanism is made in the form of a screw-nut pair, the bed is made in the form of a triangular isosceles frame with a nut of the power mechanism at the apex connecting equal frame hips and fixed stops at the other vertices of the frame, while the movable stop is rotatably connected to the end face Inta, which is made with the possibility of longitudinal movement with rotation in the nut perpendicular to the opposite base of the frame. 2. The device according to claim 1, characterized in that the hips and the base of the frame are connected to the fixed stops and the nut rigidly or demountably.