SU1170111A1 - Automatic stationary drill pipe wrench - Google Patents

Abstract

1. AUTOMATICALLY STATIONARY BORING KEY, including interconnected fastening and unscrewing mechanism and locking mechanism mounted on the power column by means of a carriage that can be moved in a plane perpendicular to the axis of the power column, characterized in that by reducing the wear of the threaded connections, the screwing mechanism is connected to the locking mechanism through diametrically located axially screwed or unscrewed threaded connections neny dya power cylinder and stabilizator- kachayuschuyus telescopic support. 2. A drill key POP.1, characterized in that the power cylinders are rigidly connected to one of the mechanisms, the cylinder rods having rollers interacting with the rollers of another mechanism, and the axes of the rollers are mutually perpendicular. 3. The drill key POP.1, which is made by the fact that the stabilization, the torus is completed in the form of a cylinder with INTO, which has a compression spring inside. 4. A drill wrench as defined in claim 2, characterized in that the working surface of each roller is made in the form of two mating conical surfaces having a common small base.

Description

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The invention relates to the drilling of wells, namely to stationary automatic drilling keys for screwing and unscrewing threaded joints of drilling and casing pipes.

The aim of the invention is to increase the reliability of the key by reducing the wear of the threaded connections.

FIG. 1 shows a schematic key, general view; FIG. 2 shows a section A-A in FIG. 1 | in fig. 3 - stabilizer, general view; in fig. 4 - power cylinder, general view; in fig. 5 shows a section B-B in FIG. one; in fig. 6 check valve, general view.

The automatic stationary drilling wrench consists of a screwing and unscrewing mechanism (upper wrench) 1 with an individual drive 2 (pneumatic, electric or hydraulic motor), a locking mechanism 3, power cylinders 4, rollers 5, a spring stabilizer 6, a swinging telescopic support 7, a carriage 8 with an axle 9, a cap 10 with a bracket and a roller 11, a power column-cylinder 12 with guides, inside of which is placed a pipe with two cylindrical guides, with lip seals 13, a rotary pipe s 14 in which there are two pairs of rollers T5 on the axles 16, controlled non-return valve 17, the stationary base 18 with ball IPF) swarm 19.

The spring stabilizer 6 consists of a housing 20 with a spindle 21, a stem 22 of a spring 23. The housing 20 is connected to a finger 24 attached to a block of the upper key 1, and a stem 22 connected to a finger 25 attached to a locking mechanism 3.

The power cylinder 4 consists of a housing 26, rigidly attached with bolts 27 to one of the blocks (for example, to the lower one), a rod with a cap 28 and a pin 29, a piston with a rod 30 inside, having vertical grooves for the pin 29, in the upper part the rod 30 is fixed fork 31 with roller 32, in contact with the same roller 5.

Piston with stem 30. Fitted with a lip seal. 33. The housing 26 at the bottom side has an inlet opening.

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for a working agent (compressed air or liquid),

In the upper part of the power column 12 installed krshka with threaded 34 and rubber seal 35

The telescopic support shaking consists of a stem 7 that is moved in the hole of the crosspiece 36, outside of which a spring 37 is placed, is closed by a washer 38 with the help of a pin 39

A fork 40 is fastened in the upper part of the stem. It is pivotally connected to the axis 41 using a finger 42. The axis 41 can move in one and the other direction relative to the lugs of the upper key block 1, depending on the transmitted torque (screwing or unscrewing) using a sleeve 43 fixed on the axis 41 using the same finger 42, compressing one or another package of springs, mounted: in the housing 44 and 45.

The controlled check valve 17 consists of a housing 46, in the upper part of which is located the valve 47 itself with a spring 48e of the rod 49 with a piston 50. On the side of the housing 46 there are two holes for the input and output of the working agent (compressed air) located one above a piston 50, another under the piston 50 /

Automatic stationary drill key works as follows.

After the drilling or casing (columns) is installed and fitted onto the wedge grip (with a hand drive or mechanized drive) in the rotor, mechanisms 1 and 3 are installed from the lower height position at the level of the threaded joint to be screwed or unscrewed. The mechanisms 1 and 3 are mounted in height by the vertical movement of the power column of the cylinder 12 under the action of the working agent — compressed air entering through the controlled check valve 17 into the internal cavity of the hollow pipe-piston 13,

As soon as both mechanisms take the desired height position, the supply of compressed air from the console is stopped and, under the action of the spring 48, the check valve 47 reliably cuts off the compressed air in the column from the external environment.

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in this position, the screwed connection is screwed or unscrewed.

When unscrewing, after mechanisms 1 and 3 clamp the pipe (drill lock), working agent E is fed from the control panel E power cylinders 4, and the upper key block 1 rises up during thread unscrewing, weighing the unscrewing pipe (candle). Due to the operation of the spring stabilizer 6 and the spring 37, the upper key block 1 rises horizontally, regardless of the force transmitted by the power cylinders 4 to the pipe being weighed (candle), since the force from the power cylinders is transmitted to the pipe strictly along its axis.

In the process of clamping the locking mechanism 3 of the lower part of the drill lock of the pipe, its rto pipe is self-installed due to the horizontal movement of the carriage 8 relative to the cap 10 of the force column 12, while the locking mechanism 3 rests on the roller 11 of the cap 10 due to some rotation of the column 12 with the pipe 14 relative to the fixed base 18 on the ball bearing 19.

In the process of clamping the upper key of the upper half of the drill lock (pipe) with the upper key 1, the upper key block is self-mounted along the upper tube due to its some horizontal movement relative to the locking mechanism 3 on the rollers 5 and 32, rocking the cross 36 with the rod 7 on the axis 9 and the lateral horizontal displacing the upper key block 1 by rotating the axis 41 together with the rod 7.

Upon completion of the screwing or loosening operation, mechanisms 1 and 3 are turned off, completely freeing their passage openings. Lifting or lowering the drill

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(or casing), and at the end of the operation, both mechanisms 1 ri 3 are slightly lowered down to place an elevator above them, on which the drill string (or casing) is being raised or lowered.

Both mechanisms 1 and 3 are metered from the control panel by partial injection from the power column 10 of the cylinder 12 of the working agent — compressed air by means of a controlled check valve 17 by supplying compressed air into the cavity under the pore. Shen 50 that moves and

fS with its rod 49 forces the valve 47 forcibly, releasing part of the compressed air from the column through the panel into the atmosphere.

As soon as necessary allowance

20 of the key is present, the supply from the compressed air console under the piston 50 is stopped, and the check valve 47 under the action of the spring 48 and the remaining compressed air in the power column 25 of the cylinder occupies the lowest position in the compartment remaining air from the external environment. i When screwing, the process of operating the key is basically the same as working

30 when unscrewing and differs only in that in order to ensure the weighing of the screwed pipe (spark plug), the working agent is first fed into the power cylinders 4 to lift the upper key block 1 to the uppermost position relative to the locking mechanism, and then the upper floor of the boring lock (pipe a) top key with a post.

and tightening up.

At the end of the descent or ascent of the tubing by the size of one tube and its landing on the wedge clamps in 2 rotor, the process is repeated with the installation of both mechanisms in height with the corresponding screwing or unscrewing of the next threaded connection,

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5-6 1 "G -VJ 42

Fig, fO V5

Claims (4)

1. AUTOMATIC STATIONARY DRILLING KEY, comprising interconnected screwing and unscrewing mechanism and a locking mechanism mounted on a power column by means of a carriage with the ability to move in a plane perpendicular to the axis of the power column, which requires that, in order to increase reliability of the key by reducing wear of threaded connections, the screwing mechanism is connected to the locking mechanism through diametrically located relative to the axis of screwed or unscrewed screw connections Nij dya power cylinder, a stabilizer, and a swinging telescopic support. 2. Drilling wrench pop.1, characterized in that the power cylinders are rigidly connected to one of the mechanisms, and the cylinder rods have rollers that interact with the rollers of another mechanism, while the axes of the rollers are mutually perpendicular. 3. Drilling wrench pop. 1, characterized in that the stabilizer is made in the form of a cylinder with a rod, inside which is placed a compression spring. 4. The drill key according to claim 2, characterized in that the working surface of each roller is made in the form of two conjugate conical surfaces having a common small base. SU - „1170111> 1 1170111 2