SU1613576A1 - Downhole fishing device - Google Patents

Abstract

The invention relates to mining, specifically to fishing devices designed to pick up and extract large holes and drills, bit bodies, etc. from wells of large diameter and holes, and can be used to lift boulders from the bottom of a well. pebbles The goal is to increase the reliability of the device and efforts to capture items. The downhole device includes a housing 1 with inclined grooves 10, in which two shoulders levers (DR) 7 with gripping elements (dies) 11 are mounted for movement. In the middle part of DR 7, a cross bar 5 is installed on hinges 6 in the form of a hinge associated with the middle part of the housing 1 latches 14. The latter are installed with the possibility of interaction of the lower parts in the initial position with the upper parts of the DR 7 and form in the upper part of the landing seat under the throwing sleeve (BV) 16. The inclined grooves 10 are curvilinear and in the longitudinal plane. The angle of inclination of the forming inclined grooves 10 to the axis of the device decreases from the top of the grooves to the bottom. After installation of the flange 4 on the object to be removed on the suspension 2, the BV 16 is lowered. A blow to the upper parts of the latches 14, the BV 16 spreads them, releasing the DR 7 from fixing in the upper position. In this case, the DR 7 moves downward and the lower shoulders of the DR 7 with dies come together, capturing, for example, pipe 12. 1 c. f-ly, 2 ill.

Description

The invention relates to mining, in particular, to fishing devices for capturing and retrieving from holes of large diameter and holes of screwholes left there, bit bodies, etc., and can be used to lift boulders from a borehole skid of rocks. pebbles

The aim of the invention is to increase the reliability of the device and increase the effort to capture objects.

FIG. I shows the device in position before the seizure of the drill pipe with the drilling tool left in the well; in fig. 2 - the same, in pg also (capture of Valuya at the bottom of the well

The downhole fishing device includes a housing 1 connected by a cable suspension 2 to a drill hoist of a drilling stack (not shown). In the lower part of the housing, the thrust rod 3 is rigidly fixed and with the possibility of axial movement (for example, along the thread on the H1 current) flange 4 of the Traverse 5 has an opening for accommodating the thrust rod 3 and for its and arnier connection two axes 6 on which ;; eny bottom, 1 levers 7. Between case I and trill-version 5 spring 8 is installed.

On the upper shoulders, the levers 7 are attached to the str. 9, suspended v. kloiii.h grooves 10. pypnomei1 | L1H; Kopnvce. rijin l ohm grooves are made crookedly, ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– On the small shoulder of rycha1 s 7, it is fixed sariirno, with the possibility of samousta

NOVELS of a plate II .Ч, ЛЯ 3, .. В) ГИ Ov ЛВЛ, g1NOY

in the well drill pipe i 2.

On the upper cororg, and on the axled axes, 13 are closed (z); they are zang) 4, their middle part, between which there are one hundred; Prussin 15. W.-rpoiU TBl) 1, (G.G.i. Iv- H

cargo v1u1 16.; } a1tse, 1ki lvluti v; ; ioM fixation of two g | levers rych- he and iv-.ai Mc. 1eistn K) t the bottom of the line b in and. Lo.chioma L) with c in (; GU: 1I "g of parts of the clock.

Well catch. l Troj1T 1O works as follows.

On the contact suspension 2, the device is lowered into the well, while the double levers 7 are in the extreme upper half of the field and are held at the first and the latch 14, the spring 8 is compressed. 1 Position f., 4 on the stop (m stem 3 from regulation: 1i; 1М1) lir height thus, when stopping the flange. Naprim (-p, on the break. 1nnuyu, bu 12

0

five

O

s

0

five

plank 1 1 oKa3aj Hcb below the pipe coupling (Fig 1).

Psx: when installing the flange 4 on the object to be removed (which is fixed by slack in the cable suspension 2) from the wellhead on the suspension 2, lower the bushing sleeve 16, which, striking the upper parts of the latches 14, spreads them away from the axis of the well, and the lower parts latches - to the axis of the well, freeing the two shoulders of the levers 7 from fixing in the upper position, while the spring 15 takes the blow from the bushing sleeve 16.

Unlocked two shoulders levers under the force of the spring 8 move down, their upper shoulders fixed in the grooves I) with rods 9, diverge, the lower shoulders with dies I 1 - converge, grasping Ti Vfn 12. When moving the rod 9 along the leg; The groove 10, due to the large angle of inclination of the groove to the axis of the device, ensures the necessary laxnarHUx stroke flow (pl.schek 11), while moving the rod 9 into the groove with a smaller angle. 1st) {aclong1 to the axis there is an increase in the pressing force during the tensioning of the cable moderator 2.

The device can also be used when sinking G10r (d containing boulders for a length of 17 hours and 17, for which a tooth 18 is rigidly attached to the levers 7

(fi. 2)

Form 1 (1 invention

Claims (2)

1. A well catching device, including a housing with inclined grooves, vc i;: new in them with the possibility of moving two front levers with gripping elements in the lower part and a traverse, staples (leaning on 1: and.; Towards the middle part. .BBMi, levers, axially hinged traverse along the axis of the body, thrust liiT oi. and a node mounted on the body 1з1; (in the form of pivotally connected with the case of latches, tanovlenny with the possibility of the interaction of the lower parts in 11is the same position with the upper parts of the double-arm levers and forming in the upper part of the landing seat under the waste sleeve. 2. The device according to claim 1, wherein, in order to increase the gripping force MfHM UTOB, H; x. iOHHb.e grooves in E.Hyulyeni creep..syunnymi 1 longitudinal pls-skosti, and the angle n, the clone of the forming chaklonnyh 1 to the axis. The structure is reduced from the top iieii. YU FIG. 2