SU755993A1 - Drill pipe stand of floating drilling plant - Google Patents

Description

I

The invention relates to drilling equipment, in particular to the mechanisms for the descent of the floating drilling rigs for drilling oil and gas wells in conditions of rough seas.

Known candlestick floating drilling rig containing stores with shut-off nodes on the fingers for attaching drill candles and the mechanism of capture candles [1}.

Also known candlestick, including a gripping mechanism, shops with rows of locking nodes, each of which contains a case, a latch with an axis, a rod, spring-loaded relative to the case and pivotally connected to the latch, and a stopper £ 2]. ·

A disadvantage of the known device is a complex system of control mechanisms for fixing candles.

The aim of the invention is to simplify the design of the candlestick.

This is achieved by the fact that the gripping mechanism is equipped with a cap with elastic elements for interacting with latches, each of which has a pivotally mounted rocker, the latch axis is hollow and installed in the housing, and the stopper is sub10

15

20

25

thirty

2

spring-loaded to interact with the yoke of the next stop node of the row.

FIG. 1 shows the candlestick, general view; in fig. 2 — node 1 in FIG. one; in fig. 3 is a view A of FIG. 2; in fig. 4 is a view B in FIG. 3

Candlemaker contains a gripping mechanism 1 with a cap 2, elastic elements 3 and a lift 4, the arrangement mechanism 5 candles 6, stores 7 and 8.

The stores contain fingers 9, the length and the number of which determines the capacity of the stores to install the candles 6 into them. On each finger, except for one internal one located closer to the well axis, a number of locking nodes 10 are installed, the number of which determines the number of candles installed in the same row sections).

The locking unit 10 is made of a housing 11, in the lugs of which, on a hollow shaft 12, a latch 13 is installed, in a groove of which a pin 15 spring-loaded with spring 14 relative to the housing 11 is pivotally mounted. In the hollow shaft 12, a spring-loaded spring 16 is mounted 17. pusher 18, interacting with the beam 19,

3

755993

four

set pivotally on the latch 13

each subsequent locking node

row.

For each row, the first rocker 19 is installed on the metalwork of the shops, and the rest on the latches 13 of the locking nodes 10. At the other end of the stopper 17, projections 20 are made, under which the grooves 21 are made in the lug of the housing 11 and the grooves 22 in the opening of the latch 13.

Powered paver as follows.

In the process of lifting the drill string from the well, the turned candle is caught by the locking mechanism 1, lifted by the hoist 4 and transferred by the placement mechanism 5 to the desired section of the magazine.

In the initial position, the latches 13 with the rocker arms 19 mounted on them, • occupy the vertical (open) position. In this position, the grooves of the latch 13 and the lugs of the housing 11 coincide, and the protrusions 20 of the stopper 17 enter them and close them under the action of the forces of the springs 16, preventing the latch 13 from turning into the horizontal (closed) position under the action of the force of the spring 14.

When installing the first candle under the action of its movement, it presses on the rocker 19, mounted on the metalwork of the store against this section, which pushes the pusher 18 with the stopper 17 of the first stop unit. The tabs 20 of the stopper out of the grooves 22 of the latch 13, releasing it, which under the action of the force of the pre-compressed spring 14 through the rod 15 is in the horizontal (closed) position. Together with the latch 13 mounted on it, the yoke 19 is given in. working (horizontal) position. When installing the next candle, she presses on the 'yoke, mounted on the latch of the first shut-off assembly, which releases, like the first, the latch of the second shut-off assembly. Thus, the entire row between the fingers 9 and the entire store is filled. At the same time, each drill candle is securely locked by the locking assembly latch, ensuring that tripping is performed when the floating drilling rig is rolled.

The process of opening the latches is as follows.

The released candle 6 is captured by the locking mechanism 1 and lifted together with it. when lifting the headrest with elastic elements 3 mounted on the grip mechanism

1 candles, lifts and rotates the latch 13 in a vertical position until the slots 22 coincide with the grooves 21 of the eyelets of the housing 11. At the moment of coincidence of the grooves 21, 22 under the influence of the spring 16, the stopper 17 with the projections 20 enters the grooves 22, closes them, thereby fixing the latch vertical (open) position. The candle is opened for its removal from the store section. Similarly, the latch opens the second, third, etc. candles. Together with the latches, the rocker arms move in the vertical position * * and the springs 14 are compressed.

With the passage between the fingers of the store 9 elastic elements 3 nagolovnika

2 are compressed, then diverge again and move the latches 13 to a vertical position, overcoming the resistance of the spring 14 and squeezing them through the rod 15.

Technical and economic efficiency of the device is ensured by simplifying the design of the shut-off units, ensuring automatic closing and opening of candles without operator intervention, ensuring the use of commercially available, developed and reliable mechanisms for tripping operations, which reduce the number of operators involved in the work , and in general to increase the productivity of labor.

Claims (1)

Claim A canopy of a floating drilling rig, including a locking mechanism, shops with rows of locking units, each of which includes a housing, a latch with an axis, a rod springed relative to the housing and pivotally connected to the latch, and a stopper, characterized in that, in order to simplify the design, the mechanism The grip is equipped with a headband with elastic elements for interacting with snaps, each of which has a pivotally mounted. a rocker arm, with the latch axis being hollow and mounted in the housing, a. the stopper is spring loaded to interact with the yoke of the subsequent stop node of the row.