SU1142618A1 - Arrangement for retaining tooling in well - Google Patents

Abstract

A DEVICE FOR FIXING EQUIPMENT IN THE Borehole, including a housing, on the outer surface of which dies are installed and two spring-loaded half rings connected to them fixed in the transport position by means of thrusters, characterized in that when it is lowered into the well on pipes, if the latter are broken, the cables are rigidly connected to the electric cable. (L

Description

 .

The invention relates to the petroleum industry, namely, to technical means for fixing equipment running inside a casing string, preferably in the event of a breakdown of its connection with a lifting mechanism.

A device is known for fixing equipment in a well, including a housing, on the outer surface of which plates are mounted and two spring-loaded half rings connected to them, fixed in transport position by means of GL,

In this device, the equipment is fixed in the well from the surface by the operator through a special cable, and the application of the latter together with the ESP is difficult in a number of cases because of the small gaps between the pump and the casing.

The purpose of the invention is to improve the reliability of the device srabatani when fixing the ESP, descending into the well on the pipe when the latter.

The goal is achieved by the fact that in the device for fixing equipment in the well, including the case, on the outer surface of which are installed, the dies and two spring-loaded half rings connected to them, fixed in the transport position by drags, the latter rigidly, are connected to the electric power cable ESP.

FIG. 1 shows the device in the transport (initial) position; a general view of FIG. 2 is a section A-A in FIG. 1, in FIG. 3 is a view B in FIG. one.

26182

The device includes a housing 1, which is rigidly connected to the ESP 2. The housing 1 is equipped with gripping dies 3, connected with two half rings 5 A and 5, which are spring-loaded in the radial direction by springs 6. mi 8, associated with axis 9,

to which moves along the slot 10. The upper parts of the half-rings 4 and 5 are connected y: -1 and 11, which are rigidly connected to the electric cable l2 ESP 2, the pump 2 is lowered into the well on the pumps of the compressor pipes 13.

The device works as follows.

When tubing 13 is formed, tension of electro 20 cable 12 occurs, which withstands the associated pulls 11. In this case, the dies are 3 with half rings 4 and 5 under the action of springs 6 clamping EOTS to the walls of the casing, which is facilitated by drafts 8 when axial movement of the housing 1 down relative to the rams 3, fixing the equipment and preventing it from falling into the well.

When lifting the ESP, body 1, moving up, carries the rod 8 or 8 away, and through them, half rings 4 and 5, thus freeing the plates 3 from adhering to the casing.

The use of the proposed device provides for automatic fixation of equipment in the casing in case of breakage of the pipes on which it is lowered into the well. This reduces the time required to eliminate accidents with ESPs and protects them from breakdowns.

FIG. 2

vi 6

Claims (1)

DEVICE FOR FIXING EQUIPMENT IN A WELL, including a housing, on the outer surface of which there are dies and two spring-loaded half rings connected to them, fixed in the transport position by rods, characterized in that, in order to increase the reliability of operation when fixing the submersible electric centrifugal pump (ESP), lowered into the well on pipes, with a break in pos. icy, rods are rigidly connected to the ESP power cable. Fi1.1