SU1507951A1 - Drilling rig - Google Patents

Abstract

The invention relates to a drilling technique and allows an increase in the carrying capacity of a drilling rig when operating in emergency mode. The drilling rig includes a mast 1 with guides 2 for carriage (K) 3 rotator. Hollow rods 5 and 6 with pistons are fixed in mast 1. 8 piston cylinders (HZ) are installed on pistons with K 9 placed on them with blocks (B). At the same time B 10.11 and 12 are fixed on K 9

B 13,14 and 15 - on the mast 1

B 16 - to K 3. Rope 17 covers B 16, ends alternately rounds B 14 and 15, B 10 and 11 and fastens on mast 1. Rope 18 is fixed on K 3 by means of a quick coupler, then it bends around B 13 and 12 and fastens the second end on the mast 1. In the process of drilling, the rope 18 is fixed on K 3, and both ends of the rope 17 are fixed on the mast 1. At the same time, K 9 is fixed on the 8 Hz hulls. When pressure is applied to the HZ cavities, the unit operates with a doubling of the stroke of the rotator and a double decrease in the force on the rotator compared to the stroke and force on the HZ. In emergency mode, in order to increase the rig capacity of the drilling rig, the cable 18 is disconnected from K 3, and one of the ends of the cable 17 is disconnected from the mast 1 and fixed to the 8 Hz case. Then K 9 is detached from the HZ and fixed on the mast 1. When pressure is applied in the cavity of the HZ, the housings 8 HZ move upward in the 1 K 9 fixed on the mast. 4 Il.

Description

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The invention relates to drilling, in particular, to drilling rigs with drilling tools feeding mechanisms.

The purpose of the invention is to increase the hydraulic lift of a drilling rig for its emergency operation.

FIG. 1 shows the installation without the base machine, general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 is a scheme for storing the rope of the chain hoist during the drilling process; in fig. 4 - the same, in the process of eliminating the sticking of a drill string.

The drilling rig includes a base machine (not shown) on which the mast 1 is installed with two straight lines 2 for the carriage 3 with the rotator 4 for the drilling tool (not shown). In the mast there are fixed two hollow shafts 5 and two hollow shafts 6 connected to each other by pistons 7, on which movable bodies of 8 hydraulic cylinders are mounted. Between the hydraulic cylinders there is a polyspast system in the form of a carriage 9, with lifting blocks 10 and 1.1 mounted on it and a feed block 12, and at the base of the mast is a feed block 13 and in its upper part lifting blocks 14 and 15. On the carriage 3 is rigidly fixed additional block 16.

The lifting rope 17 rounds with its middle part a block 16, then blocks 14 and 15 fixed on the mast 1, blocks 10 and 11 fixed on the carriage 9, and fastens with its ends to the mast 1. The feed rope 18 is fixed at one end to the carriage 3, alternately rounds the blocks 13 and 12 and the second end is also fixed on the mast 1. The radial channels 19 and 20 report axial channels of the rods 5 and 6

The drilling rig, which includes a mast mounted on the base machine, usso strut cavities 21 and 22, in the casings 35 mounted on its guide carriage 8 hydraulic cylinders, on which the tool rotates, dual rod hydraulic 23 for the rotor 17. cylinders whose hollow rods are the fixed-Burov installation works on the mast, and the polyspast system in the form of an image. a block with blocks connected to the hulls

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In the process of drilling, when the magnitude of the force on the rotator 4 is sufficient to lift the drill string, the polyspast system is stored as follows: the rope 18 is fixed on the carriage 3, both ends of the rope 17 are fixed on the mast 1, and the carriage

hydraulic cylinders, blocks fixed in the upper and lower parts of the mast, and lifting and feeding cables, one ends of which are fixed to the mast and the second are connected to the rotator carriage, characterized in that it is fixed to the hydraulic cylinders 8 to increase the load capacity. When created for its work in emergency mode.

The pressures in the cavity 21 of the body of the hydraulic cylinders, together with the carriage 9, move upwards and through the rope 18 move the carriage 3 downwards. When creating pressure in the cavity 22, the carriage 9 moves

An additional block is installed on the rotator carriage, through which the lift cable is slung, the second end of which is fixed to the hydraulic cylinder body, while the latter case is installed with a possible downward movement and through the rope 17 moves the axial movement relative to the frame 3 upwards. By necessity of switching on the polyspast system, we will post one or both hydraulic cylinders. The ice is rigidly connected to the mast, and the rope is attached to the carriage by means of

on the carriage 3 it is necessary to have a max-emus compound.

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load capacity, the polyspast system is repaired as follows: the cable 18 is disconnected from the carriage 3 by means of a quick-release coupling 24, one end of the cable 17 is connected to the hydraulic cylinders body 8 by fastening in the clamp 23, and the carriage 9 is detached from the hydraulic cylinders bodies 8 and fixed on the mast 1. In this way, the pulley of doubling the turn of the rotator is turned into a pulley of doubling the force on the rotator. When the oil is fed into the cavity 21 of the housing 8 of the hydraulic cylinders are moved upwards in the carriage 9 fixed on the mast 1, and the polyspast system with one movable unit 16 on the carriage 3 doubles the force of the hydraulic cylinders on the rotator 4. In this case, the rotation of the rotator is halved compared to the stroke of the hydraulic cylinders , but in most cases sticking of this is enough to eliminate an emergency. If necessary, with the use of short-length rods (1 m wide), the operation of lifting the stuck projectile is repeated.

When performing a drilling rig in this way, it becomes possible to install hydraulic cylinders in the mast with a force equal to the weight of the drill string on the rotator doubled, i.e. The maximum capacity of the installation for eliminating sticking is achieved by repacking the polistop system.

Claims (1)

Invention Formula The drilling rig, which includes a mast mounted on the base machine, mounted on its tool carriage guide rails, two-rod hydraulic cylinders whose hollow rods are mounted on the mast, and a polyspast system in the form of a carriage with blocks associated with bodies hydraulic cylinders, blocks fixed in the upper and lower parts of the mast, and lift and feed ropes, one ends of which are fixed to the mast and the latter are connected to the rotator carriage, characterized in that, in order to increase the load capacity, the additional carriage of the rotator carriage is installed through which the lift cable is thrown, the second end of which is fixed to the cylinder body, while the latter body is mounted for axial movement relative to each 9ig.2 / 15 ftya.J / 7