SU746081A1 - Apparatus for moving drill string stand - Google Patents

Description

(54) DEVICE FOR MOVEMENT OF CANDLES

I

The invention relates to mining, and more specifically to devices for drilling wells.

Known drilling rigs used in drilling wells, containing an elevator with a mechanism for lifting and highlighting. nick 1.

The disadvantage of the device is that complex equipment, mounted at the level of the upper working platform (magazine of the upper ends of the candles), is used to install the candles on the candlestick or to feed them to the wellhead. The latter circumstance complicates the design and makes it difficult to embed inclined wells due to the reduced stability of the drilling rig.

A device for moving candles of drill pipes is known, which includes an elevator with a lifting mechanism, a swinging tray and a candlestick with fixing elements (2.

The axes (by the device’s lack of equipment means that the processing of the light is carried out sequentially, i.e. there is no possibility of reducing the time spent on descending and lifting the tool, and the design itself of the ripocT- change system DRILL PIPE

The positional position of the feed-remove candle tray is quite complex, as it includes a number of hydraulic cylinders.

The purpose of the invention is to reduce the time spent on tripping.

The goal is achieved by the fact that the tray is made with a longitudinal groove and is provided with spring-loaded cams installed in the groove, the rotation axes of which are located along the tray, the latter being installed with the possibility of interaction with the elevator lifting mechanism.

FIG. 1 shows the proposed device, side view; in fig. 2 is the same, top view; in fig. 3 - section A-A of FIG. 2; in fig. 4 - the same, cams in the position “tool descent.

The device contains a candlestick table 1, by means of axis 2 to which tray 3 is fixed with a longitudinal notch 4 at the free end and cams 5. Cams-5 have springs 6 and are seated freely on the axis x 7 located along the axis of the tray.

Claims (2)

Tray 3 has a handle 8, and one of the landing clips has a figured pyrez under the latch 9, equipped with a pedal 10. The device also contains an automatic elevator 1I with a copier 12, equipped with a guide cable 13 and a support roller 14. The device works as follows. When the tool is lifted by the size of the candle, the tray is installed in a vertical position (shown with a dash-dotted line) and held by a latch 9, which is inserted into the profile cut-out of the tray 3. After lifting the candle and lowering the elevator to the lower position. Using pedal 10, retainer 9 goes down and tray 3, turning around axis 2, also goes down and rests with its free end onto support roller 14. At the same time, the lower part of the lifting candle and the elevator copier 12 enter the longitudinal cut of tray 3. (1) when the tray 3 moves down, the cams 5 turn at a certain angle around the axes 7, skipping the candle. The height of the installation of the table-candlestick 1 is chosen so that at the lower position of the tray 3, the cams 5 under the action of the springs b occupy the position indicated in FIG. 3, i.e. The cam 5 falls into the gap between the ends of the nipple and the coupling of the connecting lock. Thus, the previously raised candle will be picked up by the platform above the nipple thread. Further, as the working rope lifts the earrings of the Elevator 11, the support roller 14 lifts the tray 3 by the free end and provides for pulling out the threaded part of the nipple from the coupling of the connecting lock. As the elevator earrings rise, the inclination of tray 3 toward the candlestick table I increases, causing the candle to be pulled out under the force of gravity and slide 1 candlestick over the table (first along the surface of the cams 5 and then along the bottom of the tray 3). Thus, a more elevated candle will turn out to be a candlestick. Tray 3 is then set to its original position with knob 8 and the tool lifting process is repeated. The presence of the welding cable 13 allows the elevator to be oriented strictly towards the candlestick with the free side on which there is no copier. When the tool is lowered, the device is operated in the following order. Preliminarily, the cams 5 are placed in a vertical position, i.e. non-working. As the tool is lowered by the value of the previous candle, the tray 3 is lowered in the previously described way and placed on the support roller 14 of the elevator earrings. Then the next candle is fed from table 1 to the next candle, which is threaded into the socket of the previously lowered candle. In doing so, the candle presses the elevator copier 12, as a result of which the latter is released and rises. At the same time, the tray 3 is set to its original position by means of the knob 8 and the clamp 9. The proposed device for the removal of spark plugs of drill pipes will allow changing the existing organization of launching and lifting the tool, as well as increasing the technical and economic efficiency of using serial elevators. When operating it in a complex with the proposed elements, one can expect a reduction in the time spent on processing 1 candle by 25-30%, which will increase the net drilling time by 10-12%. An apparatus for moving candles of drill pipes, comprising an automatic elevator with a lifting mechanism thereof and a fixing unit for a tray connected to an axis with a candlestick, characterized in that, in order to reduce the time required for tripping, the tray is made with a longitudinal groove and provided spring-loaded cams installed in the groove, the axes of rotation of which are located along the axis of the tray, the latter being installed with the possibility of interaction with the elevator lifting mechanisms. Sources of information taken into account in the examination 1. US patent number 2946464, cl. 214-2.5, pub. 1960 2. US patent number 3706347, cl. 175-85, published, 1972 (prototype).