SU655809A1 - Device for lubricating threads of drilling pipe cores shifted by arrangement mechanism - Google Patents

Description

The invention relates to drilling equipment intended for the drilling of oil and gas wells with drilling rigs, equipped with equipment for the complete mechanization of tripping operations such as TSA.

A device for lubricating pipe threads, including a housing, a lubrication tank and a lubrication mechanism 1, is known.

However, this device cannot be used when the drillpipe plugs are moved by the placement mechanism. In addition, it does not automatically dispense lubricant depending on the diameter of the thread.

A device for lubricating the thread of candles, including a housing, a lubricating tank, a dosing chamber, valves and a lubrication mechanism in the form of a nozzle 2, are known.

In the known devices, lubrication of the threads of candles is carried out by spraying.

However, these devices do not satisfy the requirements imposed when working with lubricants containing toxic substances, and do not provide an automatic lubrication metering, depending on the diameter of the thread.

The aim of the invention is to: 1 ensure the application of grease to the threads moving at the height of the candles and automatic metering of lubricant depending on the diameter of the thread.

This goal is achieved by those. that the device for lubricating the thread of the spark plug drill pipes is provided with a fastener; on the housing of an inclined guide, movable in the vertical direction, and a pusher with a power drive connected with the drive of the placement mechanism, the lubrication mechanisms being mounted on the rotary axes, but both sides of the inclined guide and

5 are made in the form of telescopic cameras with a nozzle.

FIG. Figure 1 shows schematically a device for lubricating the thread of candles, from the side; in fig. 2 - the same plan view: on

0 FIG. 3 shows a device with a spring-loaded rod, a guide and a pusher with a power drive; in fig. 4 - lubrication mechanism in section.

The housing 1 of the device for lubricating the thread of the candles is mounted between the candlesticks 2 by means of a lever system 3.

In the housing there is a spring-loaded rod 4, on which the inclined guide 5 is fastened. On either side of the inclined guide there are lubrication mechanisms 7 placed on the rotary axes 6, which can be rotated by candle 8 on their axes approximately 60 °, and the initial position they are supported by a spring 9.

On the case of the device for lubricating the thread of the candles, the pushrod 10 of the spark plug with a power actuator 11 (for example, pneumatic) and a lubricant tank 12 are connected with a lubricant which is connected by an oil line 13 to the lubrication mechanisms.

The control of the power drive of the pushrod of the spark plug (see Fig. 3) is interlocked with the control of the mechanism 14 of the arrangement of plugs of equipment such as TSA by limit switches 15 and 16, cam 17 and electric pneumatic distributor 18 so that the displacement of the pushrod of the candle is performed automatically simultaneously with the displacement of the candle by the arrow of the arrangement mechanism .

The lubrication mechanism (see Fig. 4) is made in the form of a telescopic body 19, the internal cavity of which is the variable volume metering chamber 20.

The axially movable part 21 of the telescopic body is under the influence of the spring 22 and has an easily detachable lubricant head 23 connected to the dosing chamber by means of a discharge valve 24. The lubrication nozzle has openings for lubrication of the candle. The fixed part 25 of the telescopic body is fixed on the rotary axis 6 to the body of the inclined guide so that the distance between the oppositely located lubrication nozzles in the free state is smaller than the diameter of the candle. The internal cavity of the fixed part of the telescopic body is part of the dosing chamber and is connected by means of a discharge valve 26 to the oil line 13.

The control of the device for lubricating the thread of the spark plugs is made from a console designed for operation in the automatic and manual control mode. In the case of automatical control, the command to the control pools comes simultaneously with the activation of the boom drive of the candlestick placement mechanism of the equipment such as TSA, when the candle is transferred from the candlestick to the center of the well. With the manual control provided for adjustment, the operator can directly switch on an electric air distributor for supplying air from the central air line to one or another cavity of the pneumatic cylinder of the actuator of the candle pusher.

The operation of the device for lubricating the thread of the candles of the drill pipes carried by the placement mechanism is as follows.

The operator on the control panel of the arrangement of candles for equipment of the TSA type activates the boom to transfer the candle from the candlestick to the center of the well, and the electropneumatic distributor 18 of the pneumatic cylinder 11 of the pusher 10 of the candle automatically switches on. The pusher moves the lower end of the candle 8 along the inclined guide 5. The candle, moving, lowers the inclined guide fixed to the spring-loaded brush 4, 5 and the thread of the candle falls into the nozzles 23 of the lubricating mechanism 7 and tightly embraces them.

The further movement of the candle by the pusher occurs together with the lubrication nozzles, which causes the lubrication mechanisms to rotate approximately 60 ° and the axial movements of the moving parts 21 of the telescopic housings 19 under the action of the thread of the candle on the lubrication nozzles. When the axial movements of the movable parts of the telescopic housings, the volume of the dosing chambers 20 is reduced in proportion to the thread diameter, the pressure in them increases, the discharge valves 24 open and the lubricant flows through the lubrication nozzles onto the candles. The amount of lubricant displaced from the dosing chambers on the candle threads is proportional to the decrease in their volume. Therefore, the lubricant dosage is automatically controlled by the thread diameter itself. When turning the lubrication mechanisms, the grease that fits on the thread of the spark plug is uniformly p, and it is lubricated with grease nozzles on its surface.

After the candle passes through the lubrication mechanisms, the pusher drive actuator automatically reverses by means of electrically interlocked limit switches 15 and 16 mounted on the pusher lever and the distance mechanism of the candles. The candle pusher is moved by the actuator to the initial position, and the lubrication mechanisms are turned and returned to the initial position by the action of the springs 9. The movable parts of the telescopic housings of the lubrication mechanisms, under the action of the springs 22, move in the axial direction to the initial positions, the volume of the dosing chambers increases, the pressure in them lowers, the suction valve 26 opens, and the lubricant from the tank 12 through the oil pipe 13 refills the dosing chambers.

At the end of the work, the device for lubricating the thread of the candles by means of the lever system and the drive of the candle pusher can be removed from the working area under the candlestick.

Implementing the invention will fully automate the candle thread lubrication operations and reduce the time required to complete them, as well as allow one operator to be released to perform auxiliary and maintenance work during the descent of the drill pipe, which will reduce the total time spent on drilling wells and, accordingly, means.

Claims (2)

1. Certificate of author No. 242808, cl. E 21 B 17/00, 1967. 2. Certificate of author No. 181575, cl. E 21 B 17/00, 1965. Fig-7 IPuf.Z