RU1802058C - Deflecting tool for well direction drilling - Google Patents

Abstract

Usage: for drilling directional wells. SUMMARY OF THE INVENTION: The deflector comprises a body and a barrel located in its cavity, mounted with the possibility of limited axial movement and deviation from the axis of the body. The barrel has two shoulders. The lower shoulder is located in the inclined axial channel of the sleeve. The barrel is spring loaded relative to the housing and is connected to it by a torque transmission unit. Depending on the location of the lower collar of the bore in the inclined axial bore of the sleeve, the deflector will straighten or bend the borehole. 2 s.p. f-ly. 5 ill.

Description

The invention relates to devices for drilling directional wells, namely, to control their path without raising the tool.

The aim of the invention is to simplify designs and increase reliability. , -.- - ..

In FIG. 1 shows a diverter for directional well drilling: FIG. 2 - bias of the diverter; in FIG. 3, 4, 5 are embodiments of the deflector assembly of the deflector.

The deflector consists of a housing 1 in which a deflecting sleeve 2 with an inclined axial channel is mounted. The barrel 3 with collars 4 and 5 has the possibility of limited axial movement relative to the housing 1, and the collar 4 is in contact with the surface of the inclined axial channel of the deflecting sleeve. The axial upward movement of the barrel is limited by a collar 5, which abuts against a split sleeve 6 with non-parallel ends, preloaded by a nipple 7.

In the nipple 7, there are 2 grooves 8, in which the keys of the barrel 9 enter to transmit torque to the housing. The end face of the barrel is supported by an elastic element (spring) 10, which is pressed by a hollow nut 11 connected by a threaded connection 12 to the body. The biasing sleeve may be provided with shear pins 13. The biasing sleeve 2 with or without shear pins may be mounted as follows. that in the extended state, there is a skew between the barrel and the body (see Fig. 2, 3) or not (see Fig. 4, 5).

The elastic element can be made in the form of a package of elastic shells 14, which under the action of critical axial load lose stability.

The diverter for directional drilling operates as follows.

When descending into the well, the diverter is in an extended state (see Fig. 2, 3.4) and depending on the position of the sleeve there may be a skew between the barrel and the body (Fig. 2, 3) or not (see Fig. 4,

00

about

fO

about eating

00

5), A change in position may occur if the axial load on the dol. Exceeds the weight of the following arrangement and the force of the pressed elastic element (spring) for the case shown in FIG. 2.

In the presence of shear pins (see Figs. 3, 4), it is necessary to add force to shear the pins. That is, the axial load on the bit can be increased within the limits of the shear of the pins.

When performing an elastic element in the form of a package of elastic shells (see Fig. 5), the position will change when the axial load on the bit exceeds the weight of the underlying layout and the critical load is necessary to lose the stability of the package .: ..-. ;

The return to the starting position for all cases will occur when the axial load on the bit is reduced to the level of the layout below the diverter.

Depending on the position of the deflectors, it is possible to drill straight or curved sections of the well with downhole motors.

The technical and economic effect of the invention is to reduce material costs associated with drilling directional wells.

Claims (3)

1. A deflector for directional drilling of wells, including a housing, a sleeve installed in the cavity of the housing with an inclined axial channel, connected to the housing by a torque transmission unit, a barrel with a shoulder at the end located 0 in the inclined axial channel of the sleeve, with a collar located in the cavity of the housing, and sealing means, from l and h a rout and so that, in order to simplify the design, it is equipped with a hollow nut, all 5 with thread and the housing installed in its cavity under the sleeve with an inclined axial channel, and an elastic element located between the nut and the lower end of the barrel, the barrel being installed with the possibility of limited axial movement relative to the body. 2. The diverter according to claim 1, with respect to and with the fact that the barrel in the initial position is fixed relative to the body by shear elements .. 3. The diverter according to claims 1 and 2, with the fact that the elastic element is made in the form of a package of elastic shells. 0 5 Editor Shig5 Compiled by V. Rodin Tehred M. Morgenthal Proofreader L. Drank Pen Co