RU1793034C - Device for removing cuttings from the wellhead - Google Patents

Abstract

Usage: in the mining industry, namely, to remove drill fines from wellheads. SUMMARY OF THE INVENTION: when drilling with auger drill rods, a spreader with blades is installed on a helical rod, the inner surface of the hub of which with a small gap repeats the surface of the screw of the helical drill rod. An apron is attached to the lower ends of the spreader blades. 1 s P. f-ly, 2 ill.

Description

The invention relates to the mining industry and can be used

for gins

POBI

 Far from the little things from the mouth of the well,

A device is known for removing buoys of little things from the wellhead, comprising a paddle wheel and a hydraulic drive from the drill stand 1.

The disadvantage of this device is the complexity and lack of reliable operation.

A device is also known for removing drill trifle from the wellhead, including a lower support disk with an annular channel covering the drill rod of the drilling machine, made in the form of a support-south disk bowl with an inner conical surface, and an upper tilted truncated first cone located in the bowl a support disk, moreover, the support disk and the overturned truncated cone are located with the formation of a through annular guide slot 2.

h A disadvantage of the known device is the need for heavy

auxiliary manual work on cleaning the wellhead and moving the device from one well to another.

Also known is a device for diverting drill trifles from the wellhead during drilling, made in the form of a disk spreader with uprights and shells with spring fingers 3.

The disadvantage of such devices is the presence of two separate parts - the disk and the shell, which during drilling while moving does not always reliably engage and, in some cases, the shell is jammed in the rod and is tightened with it into the well. A device for removing drill trifle is known from the wellhead, selected as a prototype, which consists of a centrifugal spreader, on the disk of which three spring-loaded racks with freely rotating rollers, which, under the action of the springs, enter the springs, are pivotally mounted springs, and when the rod rotates, the spreader disk rotates.

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A disadvantage of the known device is the inability to use it when drilling wells with auger drill rods.

The aim of the invention is to simplify the design, increase the efficiency of removal of drill fines and the ability to use the removal of drill fines from the wellhead when drilling with auger drill rods.

This goal is achieved by installing a spreader with blades on a helical rod, the inner surface of the hub of which with a small gap repeats the surface of the screw of the helical drill rod.

An apron is attached to the lower ends of the spreader blades. Comparison of the claimed technical solution with the prototype made it possible to establish its compliance with the Novelty criterion. The features distinguishing the claimed technical solution from the prototype are not revealed in other technical solutions and, therefore, ensure the claimed solution meets the criterion of Significant differences.

In FIG. 1 presents the proposed device; in FIG. 2 is a section AA in FIG. 1. . A device for removing drill trifle from the wellhead consists of a spreader with blades 2 (made, for example, of metal), dressed on a drill rod 1, and an apron of elastic material 3, mounted on the lower ends of the blades of the spreader 4 by known methods.

The device operates as follows.

A spreader 2 with an apron 3 is put on the drill rod 1. When drilling the rod, the device is fitted with an apron 3 made of elastic material, which protects it from jamming. on uneven soils, rests on the mouth of 4 wells. The rod 1, interacting with the housing 2, rotates it, The drive force of the rod when it is fed to

; the bottom hole is expanded, with the component impact of the elastic apron 3 at the wellhead and rotation of the body 2 around the wellbore. Trifle discharged from the borehole is cut off from the mouth by the blades of the device. By

At the end of the drilling, the drill string is taken out of the well. The drilling rig with the last section of the stave with the device on it moves to another location for drilling.

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The proposed device is simpler in design than a device of a similar purpose (prototype). The claimed device allows

5 to carry out the removal of drill trifle from the wellhead when drilling with auger drill rods. The efficiency of removing drill trifle is achieved by the presence of elastic apron blades, which, when

With the operation of the device, it is possible to carry out cleaning of the wellhead and the hole for a distance of the length of the blades of the device, without violating, at the same time, the safety rules for drilling.

5 h With the help of the proposed device, operations for manual cleaning of the wellhead and holes are eliminated.

Fr. r of the acquisition 1. A device for removing fines from the mouth; wells, including a drive, a rod and a spreader of drill trifle, characterized in that, in order to simplify the design; increase the efficiency of removal of drill fines and the ability to use the removal of drill fines from the wellhead when drilling with auger drill rods, the spreader is made in

in the form of blades mounted on a hub, the inner surface of which is congruent with the surface of the drill rod screw, and there is a gap between the surface of the screw and the inner surface of the spreader hub.

2. The device according to p. 1, with the exception that it is equipped with aprons attached to the ends of the blades and

spreader.

Compiled by V. Kushnir Editor S. Kulakova Tehred M. Morgenthal Corrector A. Kozrriz