SU1203231A1 - Well-drilling apparatus - Google Patents

Description

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FIELD OF THE INVENTION The invention relates to the mining industry, specifically to devices for drilling wells with bottom washing.

The purpose of the invention is to facilitate operation by simplifying the design and reducing the repair work to replace the seals due to increased durability. Figure 1 shows the device, a general view; figure 2 - section aa in figure 1; on fig.Z - section bb in figure 1; figure 4 - section bb In figure 2; on fig.Z - section GG on figure 2; - on fig.6 - section dd on fig.Z; in Fig.7 is a cross section EE of Fig.1, when the device is operated; on Fig - the same, when fixing telescopic columns in the well.

The device for drilling wells includes a base machine 1 with a rack 2, on which interception 3 with hinged beams 4 is fixed. On the pulley system of the base machine 1 a rotational drive 5 is suspended and a swivel 7 attached to it by means of a suspension 6. A telescopic drill string is connected to the swivel 8 and outer 9 tubes. On the inner pipe 8 with the possibility of axial movement, there is mounted a sleeve 10 to which a flange 12 is attached by means of bolts 11 attached to the upper end of the external pipe 9. A stop 13 is fixed to the pipe below the flange 12. The sleeve 10 has an internal annular groove 4 in the upper part, and in the lower part there is a groove 15. In the latter, open toward the flange 12, an annular seal 16 is placed with tension on the groove planes, the upper plane and the flange 12 and the outer surface of the inner pipe 8.

On the upper and lower ends of the inner pipe 8, annular grooves 17 are made. The circular movement of pipes 8 and 9 is fixed to one another relative to the other as a keyed joint, with one key 18 fastened to the lower end of the inner pipe 8, and the other two 19 and 20 with the upper and lower ends of the outer tube 9,

The clamp axial movement of the pipes 8 and 9 is made in the form of a mortise20

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03231 .2

elements. 2 g installed in the annular groove 14 with the ability to move in a horizontal plane, and placed in annular pro-points 17. Dp of movement of the mortgage elements 21 in the upper end of the sleeve 10 can be made a longitudinal groove (not shown). For fixing embedded elements 21

fQ relative to the bush iO, a locking pin 22 is applied. The rock-destructive tool 23 is attached to the outer pipe. Well drilling device

and works as follows.

The base machine 1 and its rack 2 set on the site. The beams 4 of the interception 3 are diluted to the sides (Fig. 7). The Burov telescopic column is folded and the pipe 8 is inside the pipe 9, while the embedded elements 21 enter the upper annular groove 17 and are secured from the displacement by locking pins 22. The keys 18 and 20 are engaged (figureb). The flushing fluid and rotation drive 5 are turned on and drilled for the length of the telescopic colony in the folded position. O-ring seal 6 seals the column tubes. When drilling, pipes 8 and 9 are fixed against axial movement by the embedded elements 21, and from circular movement by pins 18

35 and 20.

The drilling is stopped when the stop 13 reaches the level of interception 3 installation, after which the outer pipe 9 is fixed on this re grip with the help of beams 4 (Fig. 8).

To drill deep into the telescopic column pushing. For this purpose, bolts II are unscrewed, while the seal 16 is released from compression and tension relative to the inner pipe 8. The locking pins 22 are removed, the terminal is removed. the cladding elements 21 of the annular grooves 1 7. In this position, the elements 21 are fixed with fingers 22. To push the inner pipe 8 out of the outer 9 by means of. lift the actuator 5 up, the embedded elements 21 set in the lower

55 annular grooves 7 and fixed with fingers 22. In this position of the telescopic column, the keys 18 and 19 will be engaged.

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Upon axial movement of the pipes 8 and 9, the seal 16 does not wear out since it is formed between it and the internal pipe. After fastening the sleeve 10 with the flange 12, the device is ready for operation.

After the end of drilling to the design depth, the telescopic column is folded, for which purpose it is installed by means of an emphasis on the grip 4 of the interception 3.

All installation work on the expansion and folding of pipes of the telescopic column is performed at the working site, at the bottom of the drilling rig.

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FIG. eight

Compiled by L. Cherepenkin Editor N. Tupitsa Tehred S. Migunova Proofreader M. Pojo

Order 8396/37 Circulation 539, Subscription

VNIIPI USSR State Committee

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

Branch PShPatent, Uzhgorod, st. Project, 4

Claims (1)

A WELL DRILLING DEVICE, including a rock cutting tool, a telescopic drill string, a circular pipe clamp, an axial pipe clamp with embedded elements and an annular seal, characterized in that, in order to facilitate operation by simplifying the design, the axial column clamp is made in the form of a sleeve with a locking finger mounted on the inner pipe, and the outer pipe has a flange on which the sleeve is fixed, while the sleeve is made of an inner annular groove. On the flange side, a groove is made, in which an annular seal is placed, and the inner pipe has annular grooves at the upper and lower ends, and the embedded elements are installed in the inner annular space <g of the sleeve with the possibility of placement in the annular grooves of the inner pipe in the working position of the device and interaction with the locking finger, and the retainer of circular movement of the pipes is made in the form of dowels, one of which is fastened to the lower end of the inner pipe, and the other two to the upper and lower ends externally th pipes. <