RU47432U1 - DEVICE FOR CLEANING THE INTERNAL CAVITY OF PIPES FROM PARAFFIN AND OTHER DEPOSITS - Google Patents

Abstract

The utility model relates to the oil and gas industry, in particular, to devices for cleaning tubing from paraffin and other deposits. The technical result achieved by the implementation of the claimed device is to increase the reliability of cleaning deposits with high density. A device for cleaning the internal cavities of pipes from paraffin and other deposits contains cleaning heads with cutting edges, a connection unit to the traction body and a load. What is new is that the lower cleaning head is made in the form of a trihedral pyramid, turning into a trihedral prism and having a conical outlet with sharp edges. On the edges of the trihedral pyramid and prism, a sharp edge is made with depressions located at an angle of 10-90 °, moreover, a sharp edge is made on the lateral surface of the depressions, and cylindrical depressions are made on the flat faces.

Description

The utility model relates to the oil and gas industry, in particular, to devices for cleaning tubing from paraffin and other deposits.

A device for cleaning internal pipe cavities from paraffin and other deposits is known, the known device comprises a body, a cleaning head with cutting edges, made integral with the impeller mounted on the shaft for rotation, an attachment unit to the traction body, mounted in the upper part of the body and stabilizer, and the stabilizer is made in the form of longitudinal protrusions located on the housing, each of which has a sharp edge at the apex and two lead-in sections at the ends of the protrusion, in the treatment head akreplen mechanism to ensure smooth rotation of the cleaning head in only one direction, and between the housing and the node connection to the traction body a bearing. (Certificate of the Russian Federation No. 11261, Е 21 В 37/02, publ. 16.09.95, bull. No. 9).

In the known device, during descent, when hovering on deposits, all the force from the scrapers is transferred to the load in its lower part. The load tends to cling to the wall. There is a load braking force on the pipe wall, reducing the force of the impact of scrapers on the deposits. The efficiency and quality of cleaning the inner surface of the pipes is reduced.

The objective of the utility model is to increase the efficiency of cleaning the inner surface of pipes from paraffin and other deposits with high density.

The technical result achieved by the implementation of the claimed device is to increase the reliability of cleaning deposits with high density.

The problem with the achievement of the technical result is solved in that the device for cleaning the internal cavities of the pipes from paraffin and other deposits contains cleaning heads with cutting edges, a connection unit to the traction body and a load, according to the utility model, the lower cleaning head is made in the form of a trihedral pyramid, rolling in a trihedral prism and having a conical outlet with sharp edges, and on the edges of the trihedral pyramid and prism made a sharp edge with hollows located at an angle of 10-90 °, Rich, on the lateral surface depressions formed sharp edge, and flat faces are made cylindrical cavities.

The figure 1 shows the proposed device. Figure 2 - lower cleaning head.

The device consists of a load 1, cleaning heads 2 with cutting edges 3, a unit for attaching 4 to the traction body - wire 5. The lower cleaning head 2 (see figure 2) is made in the form of a trihedral pyramid of height A, turning into a trihedral prism of height B, having a conical outlet section of height C. The sharp edges 6, depressions 7 are made on the ridge of the lower treatment head 2, and a sharp edge is made on their lateral surface. Cylindrical cavities 8 are made on the flat faces of the lower treatment head 2.

The device operates as follows. With the buffer valve closed, the device is placed in a lubricator. Lubricator is sealed. The buffer valve is opened and the device is lowered into the pipe string by means of a traction organ-wire 5. The sharp edge 6 with the troughs 7 of the treatment head 2 cuts into dense

deposits and forms a grid of spiral grooves in them. The cylindrical depressions 8 increase the stress on the treatment head 2, forcing it to penetrate deeper into the dense deposits. The cleaning head 2 rotates only due to the interaction of the cutting edges and deposits.

The lower head violates the integrity of the deposits. The incoming flow of well products erodes the grooves and removes the separated parts. The lower cleaning head additionally centers the load relative to the pipe string; braking of the load on the pipe wall is not allowed. The speed of lowering the device into the well increases.

When moving the traction body - wire 5 up, the cleaning head 2 cuts off the remnants of dense deposits. The flow passing through the grooves between the sharp edges 3, carries the products of cutting.

By lowering and raising the device to the required depth, they clean the inner surface of the pipes.

This embodiment of the device allows you to reliably operate it at a high density deposits. Increases the productivity of the device by increasing the speed of its descent and deep cleaning of dense deposits.

Claims (2)

1. Device for cleaning internal pipe cavities from paraffin and other deposits, containing cleaning heads with cutting edges, an attachment unit to the traction body and a load, characterized in that the lower cleaning head is made in the form of a trihedral pyramid that goes into a trihedral prism and has a conical outlet sharp edge area. 2. The device according to claim 1, characterized in that on the edges of the trihedral pyramid and prism there is a sharp edge with hollows, moreover, a sharp edge is made on the side surface of the hollows, and cylindrical hollows are made on the flat faces.