SU859594A1 - Pump-compressor pipe string with current lead - Google Patents

Description

(54) COLUMN OF PUMP AND COMPRESSOR PIPES WITH CURRENT SUPPLY

one

The invention relates to the operation of wells, namely to protect the power supply cable in directional wells equipped with electric submersible pumps.

Pumping tower columns with a power supply are known, including protection of the power supply cable, including a ring with centering ribs, which sits freely on the pipe string 1.

The disadvantage of the design is that in the process of lowering the equipment into the well, the centralizer moves along the pipe and breaks the clamps securing the lead-through cable to the pipes, which leads to an accident.

Closest to the present invention is a tubing string with a ACCUTOR, including a centralizer attached to the internal r resscopic pipe and having a groove for accommodating the lead cable, the latter also being mounted on the pipe (2).

However, a tight fit of the centralizer and the tube does not guarantee a secure

It is also possible to shift the centralizer along the pipe to the occurrence of an emergency situation during its tripping due to friction about the degree of the well.

The purpose of the invention is to increase the reliability of operation of the tubing string by preventing damage to the cable during tripping.

This goal is achieved by the fact that the centralizer is mounted on the upper end of the coupling of the pump-compressor tube and is provided with a bracket mounted on its lower end rigidly connected to the centralizer by a longitudinal bar.

FIG. 1 shows a tubing string with a power supply current; S in FIG. 2 - centralizer assembly with bracket.

The tubing string with the CURRENT SUPPLY includes a centralizer 1 with ribs 2 forming grooves, one of which houses a power supply cable 3 fixed to the compressor tubing 4 by a collar 5. A centralizer 1 is mounted on the upper end of the coupling 6 connecting the pump- compressor tubes 4.

In order to prevent the displacement of the center of the fopa along the tubing, it is provided with a clip 7, mounted on the bottom end of the clutch 6, with a longitudinal strap 8 rigidly connected to the center.

The distance between the yoke 7 and the centralizer 1, as well as their inner diameter, is respectively equal to the length of the sleeve and the outer diameter of the tubing.

To install the centralizer on the column, the clamp 7 is pushed onto the pipe body under the lower end of the sleeve 6 of the tubing string (Fig. 1). The centralizer 1 lies on the upper end of the sleeve 6. The nipple threaded end of the subsequent pipe is screwed through the axial channel of the centralizer into the sleeve 5 of the lower pipe 4.

During operation of the tubing string and during tripping, the centralizer i is not moved along the tubing axis. since clutch 6 impedes this movement.

Thus, the cable 3 laid in the groove between the edges of the centralizer and fastened to the pipe with hose clamps 5 does not experience any loads from the centralizer and is not subject to deformation.

Technical and economic efficiency It consists in reducing the costs of oil production by reducing the number of repeated underground repairs of pumping wells.

Claims (2)

1. Mishchenko I. T. and Shammasov N. X. Submersible centrifugal pumps in the fields of Bashkiria. Ufa, Bashkir book publishing house, 1963, p. 59-60. 2. US patent number 4004326, cl. 24-81, pub. 1977.