SU1121381A1 - Drilling rig - Google Patents

Abstract

DRILLING INSTALLATION, containing a mast, a movable rotator with a pipe gripping element, a rotator feed mechanism, a rotator displacement mechanism, as well as a candlestick connected to the mast and located in the transverse displacement zone of the rotator candlestick and a candle box with a guide bar, so that, in order to increase the candlestick's container, the rotator is provided with a guide fork with a slot located under the pipe gripping element to cover the upper end of the pipe, the candlestick is made with a limiting stop, is located th on the working surface candlestick adapted conjugated focusing guide turners, wherein the lower stop and the fork rotator are arranged to accommodate the pipe axis in their sectional plane at a distance equal to the transverse displacement of the move rotator.

Description

The invention relates to mining, in particular, to means for surface manipulation of sections of a drill string while drilling wells.

Known drilling rigs, containing a mast, a movable rotator with a pipe gripping element, a rotator feeding mechanism, a candlestick and a candle box 1.

However, in the process of drilling with these installations, the movement of the drill pipes to the point of their connection with the pipe gripping element and back to the candle box is carried out manually, which increases the physical load on the operating personnel.

More advanced in this aspect are drilling rigs with elements of mechanization of operations for moving drill pipes.

A known drilling rig comprises a mast, a movable rotator with a pipe gripping element, a rotator feed mechanism, a rotator transverse displacement mechanism, as well as a candlestick and candle box with a guide bar 2 located in the transverse displacement zone of the rotator.

However, the use of a known drilling rig with elements of mechanization of all movements of drill pipes by a rotator limits the depth of drilling, since this requires the placement of drill pipes in a candlestick in strictly defined fixed locations and with corresponding intervals between them. Placing more pipes under this condition increases the size of the installation.

The purpose of the invention is to increase the capacity of the candlestick.

This goal is achieved by the fact that in a drilling rig containing a mast, a movable rotator with a pipe-gripping element, a rotator feed mechanism, a rotator displacement mechanism, and also connected to the mast is Hb i in the transverse displacement zone of the rotator and a candlestick with a guide bar, a rotator equipped with a guide fork with a slot located under the pipe gripping element to cover the upper end of the pipe, the candlestick is decorated with a limiting stop located on the working surface and a candlestick, extruded with conjugated c) shoulder pins, in this case the stop and fork of the rotator set .iiHi.i f with the possibility of placing the pipe axis to u.iocCocTH of their section at a distance equal to the course of the lateral displacement of the rotator.

The presence of a plug under the pipe grip element and a restrictive stop on the candlestick 1K) s (). 1 are simple movements. without || ri.1 () zhei11 means: 1x muscular

efforts to position the pipe in a position coaxial with the pipe-gripping element, thereby ensuring its subsequent lifting and moving at the wellhead. 5 FIG. 1 schematically shows the proposed drilling installation, frontal view; in fig. 2 is a view A of FIG. 1, the position for oblique drilling; in fig. 3 shows a section BB in FIG. one.

The drilling rig comprises a mast 1 connected to the base 2 with a joint that provides for a change in its inclination. The mast 1 has a mechanism 3 designed to feed (move) the rotator 4 along the mast, and a bracket 5 with a mechanism 6 for lateral displacement of the rotator 4. The mechanisms 3 and 6 can be made, for example, in the form of hydraulic cylinders with appropriate connections (not shown).

The rotator 4 has a pipe gripping element 7 (for example, a hydraulic clamping cartridge) and a guide plug 8 with a slot 9 located under the element 7 in the alignment of the guide plate 10 of the inlet 11. To ensure work with pipes of different diameters, the plug 8 is made with diverging edges 12 slots 9 and is connected to the rotator 4 by a multi-position plug connection 13 (for example, bolts). For the same purpose, the guide bar 10 is connected to the candle-trap 11 also by a multi-position detachable connection 14. The shape of the slot 9 and the multi-position connections 13 and 14 ensure the displacement of the elements 15 that are connected to the surface of the drill pipe.

with its diameter and while maintaining its position coaxially with the axis of the pipe gripping element 7.

A candlestick 16 is fixed to the lower part of the mast, on which the lower ends of drill pipes 15 are located. A limit stop 17 is attached to the node 16 at the same level as its working surface with the guide pins 18 associated with it. The distance between the axis of the stop 17 and the axis cartridge 7 in position

5a (the position for drilling) is equal to the lateral displacement of the rotator.

The operation of the drilling rig is carried out as follows.

When performing the descent, the rotator 4 is shifted to the position c. At the same time, the operator manually transfers the upper end of the pipe 15 up to the stop into the guide bar 10 and, moving it along the bar 10, drives the fork 8 into the slot 9. The lower end of the pipe 15 is also operated manually by the operator. pushes up to the stop 17 along the guide shoulders 18, not tearing it from the working surface of the candlestick 16. Due to the fact that the stop 17 and the slot 9 of the fork 8 are on

the same distance from the axis of the cartridge 7 in position a, the pipe 15 is coaxial with the axis of the cartridge in position b, which allows for a corresponding displacement of the rotator 4 to grab it with the clamping cartridge 7, after which the pipe 15 together with the rotator is raised by the feed mechanism 3 and moves in position a by the action of the mechanism 6. Next, by displacing the rotator down, the pipe 15 is connected to the previous one fixed at the wellhead and lowered into the well. Opening the cartridge 7, the rotator is raised, transferred to the position in and repeated operations are performed with the next pipe. When lifting drill string

The rotator 4 together with the next pipe in the cartridge 7 is raised, shifted to the position b and lowered until the lower end of the pipe 15 touches the stop 17. After that, the cartridge is opened, the rotator is raised, releasing the upper end of the pipe 15, and the emptying pipe 15 is placed on the candlestick 16 , moving in the appropriate direction alternately first upper and then lower ends. The economic effect of the application of the invention is achieved by increasing the capacity of the candlestick without increasing the size of the installation, and, consequently, increasing the depth of the wells to be drilled.

eleven

15

Claims (1)

A DRILLING RIG, comprising a mast, a movable rotator with a pipe gripping element, a rotator feed mechanism, a rotational transverse displacement mechanism, and a candle holder and a candle holder connected to the mast and located in the transverse displacement zone of the rotator, characterized in that, in order to increase the capacity of the candle holder , the rotator is equipped with a guide fork with a slot located under the pipe gripping element to cover the upper end of the pipe, the candlestick is made with a limit stop located on candlestick working surface adapted mating with the guide shoulder abutment, the lower abutment and the rotator fork mounted for placing the pipe axis in their sectional plane at a distance of dy _p ho- transverse displacement rotator. §