SU1239261A1 - Inner pipe-fishing tool - Google Patents

Description

V 1

The invention relates to the drilling of wells and can be used in emergency response situations created by circulating drill pipes with outward ends with a diameter of 102,114 40 mm or with welded connecting ends with a diameter of 114,127 and 146 mm.

The purpose of the invention is to increase the efficiency of fishing operations by reducing the labor costs for tripping operations.

Figure 1 shows the internal tolpovka, general view; figure 2 and 3 - sections aa and bb in figure 1, respectively; FIG. 4 shows a trap in an axonometric projection with a one-quarter cut-out (ha ha is shown without a cut-out); figure 5 - hinged collar with cuts along the lines mb-B and GG, general view; figure 6 is a vice with a partial section, a general view; in fig. 7 - cutter, general view; Fig. 8 shows the mutual arrangement of the antennae and the protrusions of the rod.

The die is internally made in various modifications depending on the diameter of the drill pipe. It consists of a housing 1, on the bottom of which a guide cone 2 is screwed, and on. the upper one - clutch 3, having an internal partition 4. On the clutch 3 a cap 5 is screwed, on which a speed stabilizer 8 is fixed by means of a washer 6 and four bolts 7 and a ring 9 is screwed in. In case 1 a clip 10 with a ball 11 is also fixed, which are fixation knot. The lower part of the body 1 has a recess on which the sleeve 12 is located with two brackets 13, i having internal springs 14. The brackets 13 have two antennae 15 for fixing them. Each of the four cutters 16 is located on the plate 17, which is provided with a die 18, which serves to disconnect the pipe from the drill string. The plates 17 are arranged in pairs in the upper and lower parts of the housing 1. Between the plates 17 there are spacer springs G9. Each plate 17 of the upper pair has a antenna of 15 dl. fixing. In the middle of the internal cavity of the housing 1 there is a gas ha-20 with three projections 21 and a circle 22. The ha ha is triggered by the start spring 23.

In preparation for the work of the spinner is screwed onto the body 1 of the clutch 3,

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Two vices 24 are mounted on case 1 and the dies 18 are clamped with screws on them until the cutters 16 become lower than the outer surface of the case 1. Push the sleeve 12 along case I so that it covers the cutters 16 of the lower pair of plates 17 , and the brackets 13 of the bushings 12 are installed in the same plane with the outer 10 surface of the bushings 12. Through the hole, in the internal partition 4 of the coupling 3, they are inserted into 20 so that with their projections 21 they fix the antennae 15 of the upper pair of plates 17

15 and staples 13 of the sleeve 12. After that

remove the vise 24. In an accident, raise the drill string and install it with the help of an elevator on the rotor. The vagina bar 20 is unscrewed and the die assembled in the order described above is lowered with its lower end into the internal cavity of the drill string, where it is placed on the plates, having previously secured it in the notch of the coupling 3.

25 articulated yoke 25 for insurance against I -.

spontaneous falling trubolevki down. The housing 1 is inserted into the drill string so that the bracket 10 is casalized. With the ball 11 of the inner wall of the drill.

 pipes. In the center of the circle 22, a starting spring 23 is installed and the cap 5 is screwed in. When the cap 5 is screwed in, the spring 23 is compressed and presses on the circle 22 tons of helix

35 21 transfers pressure to the bracket 10. Lastly, resting the ball 11 into the wall of the drill pipe, prevents the movement of the rod downward under the influence of the compressed starting spring 23. After 80 screwing the cap 5, remove the hinge collar 25, insert the dies and throw the pipe. drill string. Under the action of its own weight the trap goes down,

45 ball 11 rolls along the wall of the drill string. The rubber stabilizer 8 speed gives the pipe-uniform uniform translational motion. Ball 11 leaving the drill string

50 loses support against the wall of the column and sko-. BA 10 ime does not interfere with the movement of the rod under the action of the starting spring 23 down. Therefore, the protrusions 21 ti gi 20 jump out of the antenna. 15. Freely surprised by the fixation, the upper pair

plates i 7 under the action of the springs 19 is moved apart until the incisors 16, fixed on the plates 17,

3 1 abut against the walls of the drill string and stop the further movement of the downpipe. Freed from fixation, the brackets 13 under the action of the internal springs 14 become perpendicular to the outer surface of the housing .1. Attaching the drive rod to the upper end of the drillstring-: KY, the tool is lowered down. The guide cone 2 falls into the internal cavity of the broken part of the drill string. Upon further movement of the tool down, the brackets 13 abut against the upper edge of the broken end of the drill string and pull the sleeve 12 from the lower pair of cutters 16, which, under the influence of the springs 19, abut against the stem of the drill string. For the free movement of the brackets 13 in the housing 1, special holes 26 are made. After this, the drill string with the rotor is slowly rotated,

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One of the pairs of incisors 16 begins to cut a groove in the drill pipe to a predetermined design depth, when reached, which thread 27, having 5 on the incisors 16, is screwed into the pipe wall and prevents further movement of the incisors 16 of the working pair. When the first pair of cutters 16 is stopped, a second pair of cutters 16j that penetrate into the projected depth is also stopped by a thread 27 begins to penetrate into the pipe wall. After both pair of cutters 16 are pierced, the connected drill string is removed

f5 from the well.

When raising the pipe above the rotor table, the lower part of the column is fixed on the rotor table, and the pipe cutter is removed using a vice 24.

20 first from the top pipe, and then from. bottom. Further lifting of the column is carried out in the usual manner.

FIG.

B-5

d 7 d

FIG. 2

FIG. 3

% g.V

-01

FIG. 6

P

FIG. 7

Editor E. Papp

Compiled by I.Levkoeva

Tehred O. Sopko Proofreader E. Sirohman

Order 3365/27 Circulation 548. Subscription VNIIPI State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Fig.8

Claims (1)

INTERNAL TUBING, including a housing with a guide cone, two pipe gripping units sequentially installed on it with a mechanism for bringing them into working position, characterized in that, in order to increase the efficiency of fishing operations by reducing labor costs for tripping and hoisting operations the tube is equipped with a fixing unit in the transport position of the pipe gripping units, the latter being installed in the cavity of the housing and made in the form of a rod thrust relative to the housing with protrusions interconnected by spacers Rifles vertical. plates interacting with the thrust in the initial position and on which the dies and cutters are sequentially mounted and rigidly fixed, and the windows are made in the case to accommodate the dies of the cutters, and on average, a fixing unit interacting in the initial position with the thrust protrusion is placed from the windows and made in the form of a bracket pivotally connected to the housing and freely located in it from the outer surface of the housing of the ball with the possibility of its release in the working position of the tube. SU. „, 1239261