SU1765352A1 - Apparatus for moving tubes between well shelves and month - Google Patents

Description

one

(21) 4361851/03 (22) 07.01.88 (46) 30.09.92. Bul №36

(71) Azerbaijan Scientific Research and Design Institute of Petroleum Engineering

(72) N.G.Kurbanov, L.I. Yakubovich and V.A.Gireyev

(56) USSR Copyright Certificate No. 204271, cl. E21 B 7/02. 1966.

US patent No. 3613905, cl. 214-2.5, publ. 1971.

(54) DEVICE FOR MOVING PIPES BETWEEN SHELVES AND WELLS

(57) The essence of the invention: between the uneven working platforms, the boom is installed in the vertical plane. A boom with a drive is mounted on the boom, movable along the boom, the gripping unit is hinged on the carriage and has a cam. A diverter is attached to the boom. On the gripping unit are placed the stops of the angle of rotation. On the carriage, the gripping unit is installed with the possibility of alternate interaction of the stop with the limiter and the cam with the diverter. The device allows working with pipes of different lengths. 2 Il.

The invention relates to the mechanization of tripping operations during the drilling and repair of oil and gas wells and can be used to transport pipes with racks to the wellhead and back.

The purpose of the invention is to increase productivity when working with pipes of different lengths,

Figure 1 shows the device, a general view; Fig. 2 shows the different positions of the device in operation.

The device comprises a working platform 1, receiving bridges with racks 2 for pipes 3 and mounted on frame 4 between unequal working platform 1 and racks 2 with the possibility of lateral movement with respect to racks 2 and rotation of the pipe transport mechanism 5 in the vertical plane.

The transfer mechanism 5 includes a boom 6 rotating in a vertical plane with a carriage 7 mounted with

longitudinal movement along the boom with a drive 8 in the form of a closed cable-block system. On the carriage 7, the gripping unit 10 for pipes 3 is pivotally mounted on the axis 9 with the possibility of angular rotation and alternately interacting with the cam 11c with a diverter 12 mounted on the rotary arrow 6 of the transfer mechanism 5 and the stop 13 with the stopper 14.

The diverter 12 is made in the form of two sections: the first A, which is parallel to the axis of the boom 6 and ensures the horizontal position of the pipe 3 when the carriage 7 moves when it is placed on the rack 2 or when it is lifted from the rack 2, and the second section B is inclined to the axis of the boom 6 intended for smooth exit with the angular movement of the gripping unit 10 with the tube 3 during the further movement of the carriage 7 to the section of the swivel boom 6, on which the free orientation of the tubes 3 is ensured by the action of its own gravity.

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A stop 13 is located on the gripping unit 10, and a limiter 14 of the angle of rotation of the gripping unit 10 is mounted on the gripping unit 10 and is capable of interacting with each other at the moment when the cam 11 stops contacting the section B of the diverter 12. In this case, the emphasis 13 and the stopper 14 lie on the arc rotation of the gripping unit 10 and determining the maximum angle of inclination of the pipe to the front station working platform 1.

The device works as follows.

The transfer mechanism 5 for the pipes 3 is placed on the frame 4 installed between the working platform 1 and the receiving bridge with the racks 2 of the pipes 3. The rotary boom 6 of the transfer mechanism 5 is set to a height that allows the gripping unit 10 to pass over the upper row of pipes 3. the carriage 7 is driven by the drive (cable system) 8 to the end of the swivel boom 6. The swivel boom 6 is brought to the position where the gripping unit 10 will hang above the next pipe 3. Then the boom 6 is lowered, the pipe is clamped 3 gripping knot 10 an unbalanced position, which also simplifies and speeds up the work of pipes with different lengths.

The boom 6 is rotated counterclockwise, with it the gripping unit 10 is raised with the clamped tube 3.

With further angular rotation of the boom 6 due to the imbalance of the seized pipe 3, it rotates with the gripper assembly 10 clockwise until the cam 11 of the gripper assembly 10 interacts with the straight section A of the diverter 12. This ensures the position of the tube 3 parallel to the boom 6, as a result of which the pipe 3, when it is lifted or laid, moves parallel to the horizontal plane of the rack 2 and at a small angle of rotation of the boom 6 the pipe 3 is detached from the flooring and its end does not touch the walkways than Ensures the safety of external threads.

Simultaneously with the vertical rotation of the boom b, the carriage 7 begins to move along the side of the working platform 1 with the tube 3 in the gripping unit 10. While the cam 11 interacts with the straight-line section A of the diverter 12, the tube 3 in the gripping unit 10 retains almost burn

vertical position. With a further vertical rotation of the boom and movement of the carriage 7, the cam 11 reaches the deflecting section B of the diverter 12, and the gripping unit 10 with the pipe 3 assumes an inclined position. At the moment when cam 11 stops contact with section B of the deflector 12, the angular position of the pipe 3 is determined by the support 13 and the angle limiter 14 which interact with each other (see Fig. 2, position I).

Further rotation of the gripping unit 10c by the movable tube 3 relative to the swivel boom 6 stops.

The movement of the gripping unit 1 with pipe 3 along section B towards the working platform 1 with simultaneous vertical rotation of the transfer mechanism 5 will continue until the moving pipe 3 with one end lies at the receiving bridge, and the other at the working platform 1 (see Fig. 2, positions II and III). The pipe 3 is then released from the gripping unit 10 and the transfer mechanism 5 returns after the next pipe 3. The pipe 3 is moved from the working platform 1 to the rack 2 in reverse order.

Claims (1)

Invention Formula A device for moving pipes between the racks and the wellhead, including a transfer mechanism made in the form of an arrow with a hingedly gripping assembly installed between uneven working platforms and racks with the possibility of rotation in the vertical plane, the rotational drive of the boom and the deflector of the gripping unit differing the fact that, in order to improve performance when working with pipes of different lengths, it is equipped with a carriage with a drive, limiting the angle of rotation of the gripping assembly, an emphasis and a cam, while the ratka is mounted on the boom so that it can move under the action of the actuator along the boom, the angle of rotation of the gripping unit is placed on the carriage, the stops and the cam are fixed on the gripping unit, the diverter is mounted on the boom, and the gripping unit is mounted on the carriage with the possibility of alternate engagement of the stop with the stopper and cam with a diverter. 1765352 2