SU1208172A1 - Elevator - Google Patents

Description

one

The invention relates to the drilling of wells, namely to devices for tripping operations, including with smooth-bore drill pipes.

The purpose of the invention is to increase the reliability of the operation of the elevator during operation of the smooth-bore drill string.

Fig, 1 shows the elevator, a general view; in fig. 2 is a section A-A in FIG. 1; FIG. 3 is a section BB in FIG. 1; Fig, 4 is a section bb In Fig, 3; FIG. 5 is a section on the HGD of FIG. 1-3.

The elevator consists of a housing 1, on which an earring 2 is fixed with fingers 3 and 4 and fixed with a pin 5 In the elevator housing there are gripping elements made in the form of dies 6 and 7 that can freely move along inclined planes, from the lateral displacement of the dies are fixed T- figurative straps 8 and 9 fixed with dies 6 and 7 with screws 10 and 11, Dies 6 and 7 are connected with pins 12 with pivot rods 13 and 14 and connected with an emphasis made in the form of a roller 15, the latter is connected with hinge rods 16 and 17 mounted on an axis 18 fixed in to The elevator 1 elevator. The rods 13 and 14 are kept from lateral displacement from the roller 15 by bolts 19 and 20. To shut off the frontal incision of the elevator, a shutter is mounted in the elevator case, freely turning 90, the shutter consists of the roller 21 in FIG. 3, position 22 shows the shutter in the open position, fixed on the axis 23, which is fixed on the rack 24 and secured with a linch pin 25, a spring 26 is mounted on the rack 24 to hold the shutter in the open position. To hold the shutter in the closed position, the latch 27 is fixed in the housing 1 by an axle 28 axis 28 is set The spring 29 is inserted. In the elevator housing 1, a fixing mechanism assembly is fixed, consisting of a housing 30. a retainer, a retainer 31, a spring 32, a handle 33, nuts 34, an eccentric 35, an axis 36 and a pusher 37 housed in the pusher housing 38 ,

The elevator works as follows.

722

The elevator earring is suspended in a pulley system held from swinging by the guide cable.

When lifting drill pipes from a well, for example, an elevator with raised and fixed (retainer 3l) in the upper position, dies 6 and 7 are lowered and freely put on the upper end of drill pipes 39 clamped by wedge grips of the rotor (in rotary type machines) or installed on the upper slot of the drill pipe lock (in core drilling machines). The elevator is lowered all the way down into the rotor or the mechanism of the turn, the pusher 37 moves up and presses the eccentric lever 35, which pulls the lock 31 from the Ashes 6, as a result of which the dies 6 and 7 under the action of their own weight, the weight of the roller 15, tg 13, 14, 16 and 17 fall into inclined planes, moving radially to the axis of the elevator until it touches the body of the drill pipe 39, the Elevator they begin to lift upwards, while under the action of the force of friction arising between the surfaces being gripped. pipes 39 and dies 6 and 7, the latter as a wedge clamp pipe. After lifting the drill candle out of the well, unscrewing it from the pipes in the well and installing the candlestick, the elevator starts to drop down, while the force of pressing the dies 6 and 7 to the drill pipe weakens, the upper end of the drill candle presses the roller 15 and lifts it into top position. Together with the roller 15, the systems r 13 and 14 are raised to the upper position through the system. dies 6 and 7, while they radially move along an inclined plane From the axis of the elevator and release the drill plug. In the upper-position, the die 6 is fixed by a spring retainer 31, the Elevator is lifted up and the released candle of the drill pipe is placed in the candle-receiver. The elevator is lowered to the wellhead and freely put on the upper end of the next drill plug until the elevator body stops in the rotor or pipe turn mechanism, while the pusher 37 pushes the latch 31 away from the plate through the eccentric 35. 6, freed dies are lowered to

pipe and the process is repeated. All operations are performed automatically.

When lowering the drill pipes into the well, the elevator with the dies 6 and 7 fixed in the upper position and the shutter open roller 21 is pulled onto the drill candle standing on the candlestick through the frontal slot and the shutter roller 21 is closed on the latch 27. Retainer handle 33 they are retracted to the full and turned 90 in this position, while the plates 6 and 7 are released from fixation, but do not fall down, as the roller 15 is held in its vertical position with the side surface of the drill plug. The elevator is lifted along the spark plug, while the roller 15 rolls over the surface of the drill plug. When it reaches the end of the drill plug, the roller 15 rolls down from the side surface onto its front part, while it lowers (relative to the elevator body) and lowers the dies 6 and 7 down to their abutment on the side surface of the pipe. Due to the occurrence of friction force between the pipe and the dies, the latter are wedged in the drill pipe and the drill candle rises along with the elevator. After the drill is lowered: the spark plug into the well is installed on the lower slot of the drill pipe lock (in the core type machines) or clamped by the wedge grips of the rotor (in the machines rotor 208172

type) at a slightly larger distance from the upper end of the drill plug than when lifting the drill pipe from the well (this is

5 is equal to the difference in magnitude between the upper and lower positions of the roller 15). About. they should lower the elevator downwards, the force of pressing the dies 6 and 7 to the drill pipe weakens, the upper end

10 {drill pipe presses roller 15 and lifts it to the top position. Together with the roller 15 they rise to the top position of the plates 6 and 7, while they radially move

15 on an inclined plane from the elevator jH free drill drill. The descent of the elevator is stopped, the plates 6 and 7 are fixed in the upper position, for which the knob 33 of the lock is turned by 90 °, the released lock 31 by the force of the spring 32 moves to the plate 6 and fixes it. The elevator rises freely. up and coming to the next light

25 Th, standing on a candlestick. By pressing the latch 27 they move it slightly to the left, releasing the bolt axis 23, which is rotated by 90 under the action of the spring 26, opening the frontal slit of the elevator body. The elevator through the frontal slot is threaded onto the drill plug and closes the shutter roller 21 on the eschal 27. The plate 6 is removed from the retention pin 31 by turning the retainer handle 33 to a refusal and turning it 90, Then the process repeats.

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Compiled by E. Stolbtsov Editor M. Petrov Tehred O. Vashchishina Proofreader A. Tsko

Order 210/39

Circulation 548 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, F-35, Raushsk nab. D. 4/5

Branch PPP Patent, Uzhgorod, st. Project, 4

FIG. five

Claims (1)

ELEVATOR, comprising a housing, gripping elements with rods placed in its passage channel, a gripping mechanism fixing assembly, including a spring-loaded latch and an axial displacement axle mounted in the elevator housing, characterized in that, in order to increase the reliability of the elevator during operation smooth-bore drill string, the locking mechanism assembly is equipped with an eccentric pivotally mounted in the housing with the possibility of its interaction with a spring-loaded clamp and pusher, with it thrust the gripping elements have emphasis placed on the axis of the body passageway. fi "! SU ,,., 1208172>