SU1078046A1 - Deep-well contact device - Google Patents

Abstract

A BOTTOM CONTACT DEVICE containing an adapter, a pin, a contact socket with a shank placed in a sleeve, the entire volume of which is filled with a liquid dielectric, characterized in that, in order to maintain operation - .: IO- t Л 1 -, - ..,: - . ::. h. 1 41 tiMbJiUVbsi-tional reliability in the transition from a section of a communication line rotating during drilling to a non-rotating with-site, it is supplied with a ball bearing electrically insulated from the adapter installed in the lower part of the sleeve, and a hinged bearing located in the upper part of the sleeve, and a contact socket the shank is seated in the inner rim of the ball bearing, the outer rim of which is electrically connected with the lower one rotating with the projectile during drilling, the communication section, and the pin by sliding landing installed in the inner cage hinge subtype-1 u (A nick.

Description

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ABOUT

The invention relates to the drilling of wells and can be used to transfer downhole parameters to the surface via an electrical communication line during the drilling process.

Known contact downhole device, the cavity of the contact part of which is filled with a liquid dielectric Cl.

The disadvantage of this device is low efficiency when used in wells of small diameter.

The closest in technical essence to the present invention is a downhole contact device for connecting a downhole assembly of equipment with a communication line, having electrical contact in the form of a contact socket with a shank, placed in a sleeve / the entire volume of which is filled with liquid dielectric

Its disadvantage is low operational reliability when transferring from the section of the communication line rotating during the drilling process to the non-rotating section.

The aim of the invention is to increase the operational reliability during the transition from a section of a communication line rotating in the course of drilling to a non-rotating section.

This goal is achieved by the fact that a device containing an adapter, a pin, a 4-pin socket is placed in a sleeve, the entire volume of which is filled with a liquid dielectric, equipped with an electrically insulated from the adapter ball bearing installed in the lower part of the sleeve, and a hinge bearing located in the upper part sleeves, with the contact socket shank planted in the inner rim of the ball bearing, the outer rim of which is electrically connected with the lower one rotating with the projectile during drilling The communication area, and the pin by means of a sliding fit is installed in the inner race of the pivot bearing.

Figure 1 shows the proposed device, a section / in figure 2 - the same, top view / in fig.Z - section AA in figure 1 ;. figure 4 - section bb in figure 1.

The device includes an adapter 1 a clutch 2 with a guide sleeve 3 for a resettable pin 4.

The cable 5 of the rotating section of the communication line through the seal 6 and the washer 7 by means of the adapter washer 8 connected to the outer rim of the ball bearing 9 is inserted from the bottom of the sleeve 10 through the insulators 11, 12 and the washer 13 and is clamped by the bridge 14 having as well as the sleeve, the holes for the passage of the working fluid, using screws 15. A shank 16 with a hemispherical contact socket, enclosed by spring elements 17, is pressed into the inner rim of the ball bearing. A hinge bearing 18 is inserted into the sleeve from the top and covered apravl guide sleeve Z.Vse space when the contact area is poured liquid dielectric. In the upper part of the coupling 2 (not shown) there is a base into which the same hinge bearing is inserted and covered with a guide sleeve, which is similar in design to sleeve 3. The sleeve and base have holes for the passage of the contact pin 4 and other holes 19 and groove 20 In order to pass the flushing fluid, the bushings also have openings into which, during assembly, the heads of the guide screws 21 enter to maintain the alignment and prevent the parts from turning relative to each other.

The device works as follows.

The ball of the tip of the contact pin 4, discharged through the hole in the swivel, bends the spring elements 17 and rests on the hemispherical surface of the socket 16. The spring elements clamp the neck of the tip and slide along it with possible longitudinal movements of the pin as a result of vibrations during the drilling process, ensuring reliable contact The contact pin resting in the seat, which is seated on the inner shaft of the ball bearing, and passing through the inner rims of the spherical bearings, does not rotate when the projectile is rotated. The cable is led out through a sealed hole in the swivel and connected to ground equipment; When building the projectile by force from above, the ball bends back the spring elements, exits the socket, and the contact pin is raised, then again dropped into the contact socket, and drilling continues.

The proposed device can be successfully used for transmitting information from the surface to the surface both during research works and for controlling bottomhole parameters during the drilling of wells.

Claims (1)

A downhole contact device containing an adapter, a pin, a contact socket with a shank, placed in a sleeve, the entire volume of which is filled with a liquid dielectric, characterized in that, in order to increase operational reliability when moving from a section of a communication line rotating during drilling to a non-rotating section It’s equipped with an electrically insulated ball bearing mounted on the bottom of the sleeve and an articulated bearing located at. the upper part of the sleeve, and the contact socket is shank mounted in the inner rim of the ball bearing, the outer rim of which is electrically connected with the lower section of the connection, which rotates with the shell during drilling, and the pin is installed in the inner race of the articulated bearing by means of a sliding fit. (L>