RU159556U1 - QUALITY CONTROL DEVICE FOR POLISHED STOCK RECTIFICATION - Google Patents

Abstract

1. A device for controlling the quality of straightening a polished rod directly at the well without opening the mouth, containing two clamping strips for fixing directly on the polished rod, interconnected by a hinged base, and with a bracket fixed to them, at the end of which an indicator of deviation from the axis is fixed comprising a rod with a tip for abutment in a polished rod, wherein the bracket consists of two parts movable relative to each other with the possibility of varying the angle between them. The device according to claim 1, in which the deviation from the axis indicator is fixed to the bracket using the indicator fixing screw. 3. The device according to claim 1, in which both parts of the bracket are elongated cylindrical elements. The device according to claim 1, in which both parts of the bracket are fixed to each other using a bracket fixing screw. The device according to claim 1, wherein the planks are rectangular parts with a semicircular cross section. The device according to claim 1, in which the strips are made to be mounted on a polished rod by fixing them to each other with fixing edges using two clamping screws. The device according to claim 6, in which to fix the strips with each other, each bar contains a rectangular protrusion along its fixing edge with two holes for the clamping screws, symmetrical holes in the other bar. The device according to claim 1, in which the bracket is fixed to the rails with a stop screw. The device according to claim 1, wherein, in order to fix the bracket to the strips, in addition to each bracket, a hole for the stop screw is made between two holes for the clamping screws. The device according to claim 1, in

Description

Device for controlling the quality of straightened polished rod directly on the well without opening the mouth

The utility model relates to the oil industry, in particular, to devices for controlling the quality of straightened polished rod directly on the well without opening the mouth.

A device for non-destructive testing of long products (a.s. SU No. 1527566, IPC G01N 27/82, publ. 07/12/1989) is known, containing four hydraulic cylinders whose cavities are connected in series, and the hydraulic cylinder rods are connected to the levers of the centering rollers, and on the rods hydraulic cylinders mounted converters.

A device is known for measuring deviations from straightness of the axis of cylindrical parts (patent RU No. 2279038, IPC G01B 13/00, publ. 06/27/2006), consisting of a pneumatic measuring device connected to a measuring system consisting of a housing with two supports, a measuring element with a nozzle located between the supports, and the measuring system is equipped with two measuring elements mounted perpendicular to each other in the same plane, perpendicular to the axis of the measured part, containing spring-loaded tips and, entering into contact with the surface and forming the component to measuring clearances with end surfaces of the measuring nozzle connected to a pneumatic measuring chambers of the measuring instrument, comprising pnevmoelektronny unit.

A device is known for determining the position of the axis of symmetry of a part (patent RU No.2003037, IPC G01B 5/20, G01B 5/24, publ. 11/15/1993), containing guides in the form of half rings with fixing elements of the device on the controlled part, and the base of the device

made in the form of a hollow rod and two rods, one ends of which are mounted in the cavity of the rod towards each other with the possibility of movement along it, rotation about its axis and fixing, the guides are pivotally connected to the other ends of the respective rods, the reading unit is made in the form of an end fixed in the center bushings perpendicular to the base of the ring guide fixed parallel to the base on the end face of the sleeve of the dial, the ring guide is equipped with a scale and mounted to move along with a slider in which the platform for placing the geodetic instrument is fixed with microscrews, the sleeve is mounted with the possibility of rotation about an axis perpendicular to the base.

A known device for controlling the perpendicularity of the axes (a.s. SU No. 193737, IPC G01B 3/22, G01B 5/25, publ. 01.01.1967), closest in technical essence to the claimed device and adopted as a prototype containing two prisms, one of which one is mounted motionlessly, and the other is movably, and a dial indicator interacting with the movable prism, and a second dial indicator is installed in it, the measuring tip of which is perpendicular to the measuring tip of another indicator, and the rod moved along its axis is rigidly connected to the a prism and interacting with the measuring tips of both indicators, and the movable prism is made rotatable relative to the axis of the rod.

When straightening a polished rod, one often encounters the problem of controlling the quality of its straightening. This problem can be solved by the claimed device, which allows you to control the quality of straightening polished rod, both in one plane and around the circumference during deformation of a spiral shape.

The inventive device allows you to control the quality of straightening polished rod without dismantling it from the well and without opening the wellhead, requires low manufacturing costs.

The task to which the utility model is directed is the development of a calibration device that allows controlling the restoration (editing) of a polished rod after its deformation in wells equipped with drives of sucker rod pumps (SHGN).

The technical result, which the utility model aims to achieve, is to increase the efficiency and accuracy of checking the quality of the rectified section of the polished rod.

The inventive device is illustrated in the figures:

in FIG. 1 shows a diagram of a complete device.

in FIG. 2 shows the device in the working position, mounted on a polished rod.

The inventive device consists of the following elements:

1 - two clamping strips connected to each other by an articulated base;

2 - bracket;

3 - axis deviation indicator;

4 - two clamping screws for fastening the strips to each other;

5 - thrust screw for expanding the rails between each other;

6 - screw fixing the bracket (its parts together);

7 - screw fixing the indicator to the bracket.

Two strips 1 are rectangular parts with a semicircular cross section and are designed to be fixed directly to the polished rod.

The strips 1 are interconnected on the one hand by means of a hinge base, and on the other hand, by rectangular protrusions with two holes, which, when fixed on the polished rod, are symmetrically overlapped and clamping screws 4 are inserted into the holes.

The bracket 2 consists of two elongated elements movable relative to each other by means of a fixing screw 6, with the possibility of changing the angle between them.

The bracket 2 is mounted on the strips 1 with a stop screw 5, which is inserted into the hole made between the holes for the clamping screws 4.

At one end, the bracket 2 is attached to the strips 1, and at its other end, an indicator 3 with a rod is fixed.

The upper part of the bracket 2, into which the stem of the indicator 3 is inserted, remains movable.

The indicator 3 contains a rod with a tip, and the rod is inserted directly into the upper part of the bracket 2 perpendicular to it and is fixed with the fixing screw 7.

All screws are fixed without nuts, i.e. screwed into threaded holes in the slats.

Indicator 3 is a dial indicator with a division price of 0.01 mm. It measures deviations from the axis as it rotates around the polished rod.

The elements of the device have the following dimensions:

clamping punches 1: width 80 mm, length 110 mm, thickness 8 mm;

bracket 2: length 450 mm, thickness 20 mm;

clamping screws 4: diameter 10 mm, length 60 mm;

stop screw 5: diameter 8 mm, length 40 mm;

screw 6: diameter 8 mm, length 50 mm;

screw 7: diameter 6 mm, length 30 mm.

All of the above elements are made of St45 material.

Installation, dismantling and operation of the device are as follows.

Mount the device on a polished rod in a section that has not undergone deformation (often this section is in close proximity to the entrance of the polished rod to the gland of the wellhead with a self-aligning head (SUSH) of the well shutoff valves) by fixing the pressure strips 1 on a hinge basis, i.e. first one strip is pressed to the polished rod in the open form, and then the second, covering the completely polished rod, and fix them together with two clamping screws 4.

The indicator rod 3 is inserted into the hole located at the end of the upper movable part of the bracket 2 and clamped with a screw 7.

They give the bracket the necessary position, i.e. both parts of the bracket 2 are placed relative to each other at an angle at which the tip of the rod of the indicator 3 abuts against the point at which the polished rod was edited, and the bracket 2 is fixed to the pressure bars 1 by screw 6.

To move the device to the point where it is necessary to check the quality of straightening the polished rod, as well as to check the circumference, the deviation from the axis slightly unscrew the stop screw 5 to open the clamping strips 1.

This allows you to get a slight gap between the inner part of the clamping strips 1 and the polished rod (open the bars 1) until it becomes possible to move the entire device higher or lower along the polished rod, or to rotate it around the circumference of the polished rod. At the same time, the device should also be held on a polished rod.

In the position of the stop of the tip of the rod of indicator 3 to the point where it is necessary to control the quality of rectification, set the indicator 3 to "0".

In this case, the bracket 2 and the clamping straps 1 are mounted on a polished rod below the deformed section.

Then rotate the device around the polished rod and observe the deviation of the indicator arrow.

By changing the readings, the arrows on indicator 3 conclude: in which direction it is necessary to make additional corrections to the polished rod.

In the place where the arrow deviated from zero, fix the place of deformation and mark the protruding portion of the polished rod (for example, chalk).

Then, the direction of application of force for re-dressing the polished rod is selected and its polished rod is edited for its final straightening.

Then indicator 3 is brought again to the same point, and by rotation, the deviation of the arrow is again looked, and when it is rejected, the straightening operation is repeated again to achieve complete straightening of the polished rod and the indicator arrow does not deviate from “0”.

After the high-quality editing of one point of the polished rod, the assembly is lifted up along the length of the polished rod up and the device is rotated around the circle to determine a new deformation point and the direction of application of force to edit the polished rod.

T.O. The claimed device allows, in addition to checking the quality of the already straightened section, also to find new places on the polished rod that require straightening.

Dismantling the device is carried out in the reverse order.

The inventive device allows you to control the quality of rectification of the polished rod both in the same plane and around the circumference when a spiral deformation occurs.

The inventive device allows to determine:

- the degree of restoration of the curved place of the polished rod;

- the degree of restoration of the axis of the polished rod;

- straightness of the axis of the polished rod.

The durability of the stuffing box device is one of the important tasks when starting a well with a polished rod, first subjected to deformation and then straightening. The slightest deviation from the axis of the polished rod can lead to premature wear of the LHG and, as a consequence, depressurization of the LHG and the passage of produced fluid to the outside.

Thus, when carrying out work during straightening (restoration of a polished rod), it is necessary to carefully control the straightening process, i.e. indicators of indicator 3 at the editing point and along the entire circumference of the polished rod should be the same. To fully straighten the curved polished rod, it is necessary to ensure that there is no change in the movement of the arrow of indicator 3.

Claims (14)

1. A device for controlling the quality of straightening a polished rod directly on the well without opening the mouth, containing two clamping strips for fixing directly on the polished rod, interconnected by a hinged base, and with a bracket fixed to them, at the end of which an indicator of deviation from the axis is fixed comprising a rod with a tip for abutment in a polished rod, and the bracket consists of two parts movable relative to each other with the possibility of varying the angle between them. 2. The device according to p. 1, in which the indicator of the deviation from the axis is fixed to the bracket using the indicator fixing screw. 3. The device according to claim 1, in which both parts of the bracket are elongated cylindrical elements. 4. The device according to claim 1, in which both parts of the bracket are fixed to each other using a bracket fixing screw. 5. The device according to claim 1, in which the trims are rectangular parts with a semicircular cross section. 6. The device according to p. 1, in which the straps are made with the possibility of mounting on a polished rod by fixing them to each other with fixing edges using two clamping screws. 7. The device according to p. 6, in which to fix the strips with each other, each strap contains along its locking edge a rectangular protrusion with two holes for clamping screws, symmetrical holes in the other strip. 8. The device according to claim 1, in which the bracket is fixed to the bars using the stop screw. 9. The device according to claim 1, in which, for fixing the bracket to the strips, in addition to each bracket, a hole for the stop screw is made between two holes for the clamping screws. 10. The device according to claim 1, in which the indicator rod is installed perpendicular to the upper part of the bracket. 11. The device according to claim 1, in which the indicator is a dial-type indicator with a division price of 0.01 mm. 12. The device according to claim 1, in which the clamping strips have dimensions: width 80 mm, length 110 mm, thickness 8 mm. 13. The device according to claim 1, in which the bracket has dimensions: length 450 mm, thickness 20 mm 14. The device according to claim 1, in which the clamping strips and the bracket are made of material St45.

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