SU848585A1 - Internal pipe-engaging device - Google Patents

Description

INNER TUBE

(54)

one . The invention relates to a technique for drilling operations carried out in the field of engineering geology in industrial and civil engineering, and is intended to capture and remove broken pipes from a well. The known trap for gripping and removing broken pipes from wells, comprising a driven screw with a drive, a housing with retractable gripping elements having a conical inner surface, and a threaded conical sleeve 1. The disadvantage of this device is the unreliability of the spinner in the operation of the device; the soil of its workers. element. The purpose of the invention is to find out the reliability of the work, by eliminating foreign particles from the mechanism of the trap and by adjusting the gripping of the pipes. The goal is achieved by the fact that the internal pipe and the clamping and extraction of dangling t: rub from the well, containing the drive screw with water, the body with sliding gripping elements having a conical internal surface, and a threaded one. The taper sleeve is provided with a gear clutch which is disposed axially displaced in the housing. the adjusting screw and the threaded conical sleeve are made of two parts, while its internal part, which interacts with the lead screw, is made with gear teeth. The drawing is a schematic image. on the proposed trubolovka. The inner trumpet contains a lead screw 1 with a drive 2, a housing 3 with retractable gripping elements 4, a threaded conical sleeve 5, a gear coupling 6 and an adjusting screw 7. Re.zbova taper sleeve 5 is made of two parts, and the inner part 8 of the conical threaded bushings, interacting with the lead screw 1, are made with teeth 9 interacting with teeth of gear coupling 6 of the deposit. The device works as follows. If it is necessary to extract from the wells of dangling pipes, their inner diameter is first determined and then the stops 10 are turned to a position that can press them to the end part of the pipe, set

adjusting screw 7 to the position corresponding to the preset gripping force of the inner side surface of the pipe ..

After that, the die is lowered into the well to the level of a comfortable grip of the pipe, and the drive screw 1 of the mechanical drive drives the rotation. The lead screw 1, rotating by means of the threaded conical sleeve 5, lifts the conical body upward, and the downwardly gripping gripping elements 4 move in a horizontal-plane; in the radial direction and seize the pipe. In this case, the end of the lead screw 1, reaching the end of the adjusting screw 7, moves it down together with the toothed clutch 6 of the clutch, which, moving down, leaves the engagement with the threaded conical sleeve, after which the latter begins to rotate idle with the lead screw, not causing further rise of the conical body. The proposed inner reamer makes it possible to increase the reliability of operation when seizing broken pipes.

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Claims (1)

Claims of the Inner; 1I die for capturing and extracting dangling pipes from wells, comprising a motorized propeller, a housing with retractable gripping elements having a conical inner surface, and a threaded conical sleeve, characterized in that by eliminating debris from the mechanism of the die and controlling the gripping force, the pipes, it is provided with a gear clutch placed in the axial direction that can be moved with the regulator full-time the screw, and threaded conical sleeve is formed of two parts, with its inner portion cooperating with the threaded spindle, is provided with teeth interacting 0 with gear coupling teeth. Sources of information taken into account during the examination 1. V. Vozdvizhensky. and others. Exploratory core drilling. Moscow, Gos5 Geoltekhizdat, 1957, p. 496-497.