SU1479609A1 - Arrangement for advancing pipes to well - Google Patents

Abstract

The invention relates to devices for the mechanization of tripping for drilling wells. It m. used to feed pipes to the well during the build-up process and reduces metal intensity. The device includes a rack 1 for horizontal laying of pipes (T) 2 and a mechanism 3 for feeding T 2 to an elevator 4. Rack 1 consists of two (or more) pillars (PS) 6 with rigidly fixed support brackets (OK) 7 and directions 8 vertical displacement and from two (or more) PS 9 with rigidly mounted OK. In this case, PS 6 is connected to shafts 11 by means of guides 8 and hydraulic cylinders 13, and PS 9 is fixed on shafts 11 with rotation drives 12. The feed mechanism T 2 to the elevator 4 is designed as a beam rotatable in a horizontal plane with supporting brackets in the form of rollers 17 The axes of the rollers 17 are fixed in a rotary relative beam housings 19. When the hydraulic cylinders 13 OK 7 are turned on, PS 6 moves the T 2 and moves it up. Lifting operations T 2 are carried out before the rack 1 is filled. When the drill string OK 7 is extended, T 2 is fed into the zone above the rollers 17. The beam is turned by a rotation drive 16 and rotates 90 ° relative to axis 15, and T 2 is moved to the supply line to elevator 4. 8 silt

Description

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The invention relates to the mining industry, in particular, to devices for the mechanization of tripping operations during the drilling of wells, and can be used to feed pipes to the well in the process of building up the drill string.

The aim of the invention is to reduce metal consumption.

Figure 1 schematically presents the proposed device, side view; figure 2 is the same, the view in the plan; on fig.Z - 8 - the scheme of movements of the elements of the rack.

The device includes a rack 1 for horizontal laying of pipes 2, a mechanism 3 for feeding pipes 2 to an elevator 4, receiving bridges 5. A rack 1 for horizontal laying of pipes 2 consists of two (or more) pillars 6 with rigidly fixed support brackets 7 and guides 8 vertical movement of two (or more) pillars 9 with rigidly mounted support brackets 10. Each rack 9 is fixed on the shafts 11 with 12-turn actuators. The supports 6 are connected to the shafts 11 by means of the guides 8 and the hydraulic cylinders 13 of their vertical movement.

The pipe feed mechanism 3 to the elevator 4 (and vice versa) includes a beam 14 which is rotatable in a horizontal plane with a pivot axis 15 and a turn actuator 16. The beam 14 is equipped with two support brackets in the form of rollers 17 with an individual drive 18 for their rotation. The rollers 17 are rotatably mounted relative to the beam 14. The axes of the rollers 17 are fixed to the housings 14 that are rotatable relative to the beam 14. In addition to the rollers 17, the beam 14 is equipped with a roller 20 fixed to a bracket 21 pivotally connected to it. The bracket 21 is installed with the possibility of rotation in a vertical plane under the action of the actuator 22.

The device works as follows.

By applying pressure to the hydraulic cylinders 13, the vertical movement of the pillars 6 is included, and the support brackets 7 during this movement of the racks 6 pick up the supplied pipe 2 (FIG. 3) and move it upwards by an amount exceeding the pitch between the support brackets 7 by 25-40 mm in the zone above the support brackets 10 of the uprights 9, which at this moment are in the unfolded position 90, provide for an easy passage of the riser.

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At the end of the lifting racks 6 with

By means of the pipe 2, the driver 12 rotates the pillars 9 by 90 ° and inserts the support brackets 10 under the pipe 2 held by the support brackets 7 of the racks 6 (Figures 4 and 5).

By turning on the drain from the cylinders 13, the pillars 6 with the support brackets 7, lowering, transfer the pipe 2 to the support brackets 10 and turn 90 °, thus allowing the passage of the second support bracket 7 above the first one

relative to left on the support brackets 10 pipe 2 (figure 5).

In the lower position, the legs 6 are again rotated 90 ° to the receiving position of the next pipe 2, while the second support bracket 7 takes up the position under the pipe 2 held by the support arms 10 of the legs 9 (Fig. 6).

The following pipe 2 is fed to the lower, free from pipe 2 support brackets 7 of the uprights 6, and all operations are repeated until the rack 1 is completely filled until the presence of pipe 2 on the upper support brackets 10 of the uprights 9 (Fig.7 and 8).

In the process of increasing the drill string, the pipe 2 is fed to the elevator as follows.

By turning on the hydraulic cylinders 13 of the column 6, moving upwards, they pick up the support pipe 2 with the support arms 7, located on the upper support arms 10 of the support 9, and feed it into the area above the rollers 17, which are turned by turn of the bodies 19 by 90 relative to the beam 14 and when you turn on the drain of the hydraulic cylinder 13 (lowering racks 6) perceive the weight of the pipe 2.

The beam 14 is turned 90 ° by the rotation actuator 16 (about the axis 15), carrying the pipe 2 to the supply line to the elevator 4. The bracket 21 is lowered to the horizontal position by the drive 22, the rollers 17 rotating drives 18 turn on and the pipe 2 begins to move forward to the electric valve 4 At the moment when the center of gravity of the pipe 2 takes a position between the rollers 17 and 20, the load from the rear roller 17 is removed (roller 20 is located slightly below roller 17) and the rear roller 17 is pulled out from under pipe 2 by turning the housing 19 relative to the beam 14.

The movement of the pipe 2 is stopped by turning off the drives 18 of the rollers 17 at the moment when the end of the pipe enters the zone of the elevator 4. The elevator 4 closes and when the elevator (pipe) is lifted, the pipe 2 rolls over the front roller 1 7 until it moves to the roller 20 time is pressed to pipe 2.

Opening the drain from the actuator hydraulic cylinder 22 smoothly lowers the end of the pipe 2 to the position

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from which it is manually guided to the sleeve of the upper pipe of the drill string held by the RCC (not shown).

When returning the pipe 2 to the rack, the lower end of the pipe 2 held by the elevator 4 is retracted onto the roller 20 of the bracket 21.

Turning to a vertical position, the bracket 21 with the roller 20 leads the end of the pipe to the zone where the front roller 17 is located.

When the elevator 4 is lowered, the pipe 2, resting on the roller 20, turns in a vertical plane and takes a position in which the front roller 17 is inserted under the body of the pipe 2 lowered by the elevator 4.

The roller 20 is rotated by the bracket 21 and returned to a horizontal position, in which case the pipe is transferred to the roller 17, on which it rests until it reaches a horizontal position, in which the rear roller 17 is brought under the pipe body.

Claims (1)

The elevator 4 opens, the rollers 17 of the rollers 17 are turned on, and the pipe 2 is moved to a position in which its center of gravity is located between the rollers 17. The roller 14 is rotated 90, lifting the pillars 6 support brackets 7 perceive the weight; held by the rollers 17 of the pipe, freed from the weight of the pipe rollers 17 are rotated 90 °, ensuring the lowering of the pipe 2 on the support brackets 10 racks 9. The formula of the invention A device for feeding pipes to a well, including a rack for horizontal pipe laying and a pipe feeding mechanism to an elevator, characterized in that, in order to reduce metal consumption, the rack is made in the form of at least four racks with pipe support brackets fixed on them at least two poles are installed with the possibility of rotation relative to their vertical axes, and no less than the other two - with the possibility of rotation and vertical movement, moreover, the pipe feed mechanism to the elevator is designed as a rotary in th the horizontal plane of the beam with support brackets in the form of rollers mounted rotatably relative to the beam. 6096Ш fi & 7 -EEEEN: pi Wed / g6 -Ј & ABOUT rig.8