Uniting device

FIELD: survey device to survey wells during drilling and operation, particularly to unite modules during cooperation thereof.

SUBSTANCE: device comprises body including two parts and ball finger. The ball finger has spherical surfaces mating upper body part. The ball finger is fastened by pressing nut. Lower part of ball finger is screwed in lower body part to which sleeve performing limited axial movement is connected. The sleeve movement is limited by retaining nut. Uniting device air-tightness is provided by sealing ring and pressing nut installation.

EFFECT: increased degree of uniting device movement freedom, improved air-tightness.

1 dwg

 

The invention relates to apparatus for the study of drilling and operating wells, and is intended for the connection of geophysical modules when working together.

Known coupling, designed for rigid and tight connection of tubing without mutual displacement of the axes (1) (see Pipe oil country tubular goods: a Handbook / Under the General editorship of A. Saroyan. - 3rd ed., Rev. and supplementary); Nedra, 1987, 488 S.).

A disadvantage of the known device is the low efficiency in conditions of strong curvature of the trunk wells and basically solves the problem of sealing pipe joints in vertical wells and the wells of the lesser curvature.

Known coupling rod (Patent No. 2017930, E 21 In 17/05, publ. 15.08.94, bull. No. 15) for directional or deviated wells, comprising a housing of two parts, each of which is provided with two rollers arranged in mutually perpendicular planes, and swivel in the form of a ball pin, one end of which is rigidly connected with the upper part of the body, and the other through coupling with the inner ball field and the lower part of the body.

However, the known coupling of little use as a docking device for connecting geophysical modules due to the tightness with which organisations and limited degrees of freedom.

Thus, the problem of creating a reliable connecting device for connection of geophysical modules when working together during the operation of it equipment complex for research in deviated wells.

The purpose of the invention to increase the degree of freedom of movement of the docking device, and ensure the integrity of the complex, consisting of several modules.

This technical result is achieved in that the connecting device, comprising a casing consisting of two parts, and ball and ball stud having a spherical mating surfaces with the upper part of the body, attach the clamping nut, and the lower portion of the ball stud screwed into the lower part of the housing, which accommodates a sleeve with a limited axial movement of the fixed retaining nut tightness docking devices provide installation of the sealing rings and the retainer nut.

Execution swivel with spherical and sealing surfaces increases the degree of freedom of movement of the docking device, while maintaining the air tightness at a given angle of rotation of the device.

The drawing shows a connecting device to provide increased freedom of movement, ensuring the tightness of the connection geo the physical modules.

The proposed device includes a composite body made of two parts 1 and 2, ball 3, the clamping nut 4, a sleeve 5, the lock nut 6 and the sealing rings 7, 8 and 9.

The device operates as follows.

The upper part of the housing 1 coupling screw into the cable head of the geophysical cable hoist lift, and the lower part of the housing 2 is attached to the module hardware complex for exploration wells. Clamping nut 4 provides the required clearance swivel of the conditions of integrity and freedom of movement. Lock nut 6 is designed to provide a rigid and tight connection of the ball pin 3 and the bottom half of the composite casing 2. Speaker diameter of the locking nut 6 restricts the movement of the sleeve 5 relative to the lower half casing 2.

The device operates as follows. When parts of the curvature of the wellbore bending effort, the body part 1 and 2, together with the modules of the apparatus complex center in the well, reducing the voltage from the bend in the housing of the downhole module (unit) of the apparatus complex, as well as preventing his lapel.

Thus, the proposed device, with the necessary flexibility that will allow for performance and neo is required mobility docking connection.

Sources of information

1. Pipe oil country tubular goods: a Handbook / Under the General editorship of A. Saroyan. - 3rd ed., Rev. and supplementary); Nedra, 1987, 488 S.

2. Patent No. 2017930, E 21 In 17/05, publ. 15.08.94, bull. No. 15.

A docking device, comprising a casing consisting of two parts, and the ball, wherein the ball stud having a spherical mating surfaces with the upper part of the body, attach the clamping nut, and the lower portion of the ball stud screwed into the lower part of the housing, which accommodates a sleeve with a limited axial movement of the fixed retaining nut tightness docking devices provide installation of the sealing rings and the retainer nut.



 

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