SU446625A1 - Installation for receiving, accumulating and dispensing well pipes in a horizontal position during tripping - Google Patents

Description

one

The installation can be used in the process of drilling or in the underground repair of oil and gas wells.

A known installation for receiving, accumulating and dispensing well pipes in a horizontal position during tripping, which has a magazine for collecting pipes installed on a common base, a channel for receiving supply pipes parallel to said shop, and an delivery mechanism for transporting pipes from the channel to the shop and back. At the same time, the trough is equipped with rotating cams (flags) for dropping the pipe from it onto the feeding mechanism. In such an installation, the chute and rotating cams are structurally imperfect, through which the connection between the wellhead and the feed mechanism is carried out, resulting in a large amount of manual labor spent on the maximum possible deviation of the pulley system from the center of the well to the side of the chute and tracking removal of the elevator.

In order to automate the supply of pipes from the wellhead to the magazine and back in the proposed installation, the chute is mounted with the possibility of longitudinal movement relative to the magazine, and the steering cams are kinematically connected to the chute so that they drop the pipe on the feeding mechanism at the end of the chute path.

In the preferred installation, each cam is rigidly mounted on a vertical axis, which is embedded in the base and has a horizontal lever that passes through a slot in a vertical plate attached to the chute.

To move the gutter, it is equipped with rollers mounted on rails that are located on the base.

Pa figs. 1 shows the proposed installation, side view; in fig. 2 - the same installation in the plan; in fig. 3 shows a section along A - A in FIG. 2, schematically showing the installation in the process of loading the well pipe into the store; in fig. 4 is a part of the view shown in FIG. 2, when the chute is located at the PI location; in fig. 5 - the same with the pipe laid on the gutter; in fig. 6 is the same when the pipe is transferred from the gutter to the feed mechanism to the minimizer, prior to the end of the transfer of the blade from the Pt position to the P2 position. in fig. 7 - the same, when the chute is set to position 2 and the cams are removed; in fig. 8 is a section along A-A in FIG. 2, schematically showing the installation in the process of dispensing well pipes from the magazine when the cams are removed; in fig. 9 is a part of the view shown in FIG. 2, at the time preceding the beginning of the movement of the chute (from the tube dispensed from the magazine) from the PZ position to the Pb position in FIG. 10 - the same, when the chute is in position Pi, an elevator is pushed onto the pipe and the moment precedes the beginning of the transfer of the pipe to the vertical position for lowering into the well. The installation (see Figs. 1, 2 and 3) contains a base 1, a pipe-type shop 2, a screw feed mechanism 3 and side 4 for pipes. In order to create the possibility of reciprocating movement in the direction of the wellhead, the chute is provided with rollers 5 placed on guides 6 fixed on the base of the installation. The chute is kinematically connected to rotary cams, 7, interacting with the well pipe 8 (see Fig. 4, 5 and 6), located on the chute. Each ejector cam is mounted on a vertical axis 9 embedded in the base 1, the axis being provided with a horizontal lever 10 passing through a slot made in a vertical plate 11 fixedly mounted on the movable groove 4. Reciprocating movement of the groove in cooperation with the cams - the spreader provides automatic feeding of pipes from the wellhead from the chute to the screw feed mechanism and back. The use of manual labor is hereby excluded. There is an installation equipped with a movable self-resetting chute, as follows (the principle of filling and unloading the tube magazine and the interaction of the latter with the screw feeder are not described). The pipe is laid on the chute 4, i.e. the pipe is transferred from a vertical position to a horizontal position and vice versa, in a known manner. During lifting operations at the well to receive the next pipe, the chute 4, at the command of the control panel, is set to the Pi position, and the release cams 7 are in the position shown in FIG. 4 and 5. After the pipe 850 is released from the elevator, the chute is moved to the PZ position. At the final moment of movement of the gutter plate And the edge of the slot sets in motion the lever 10, which, in turn, causes the rotation of the axis 9, which inevitably leads to the rotation of the cams-resetters fixedly mounted on the axis. When the cams are turned, the pants are dropped onto the screw feed mechanism 3 (see Fig. 6), after which the chute returns to the Pi position to receive the next pipe (see Fig. 4). With bleed holes in the well, there is no need to use the cams, but they are removed, the starting position for the groove is the position of Py (see Fig. 7 and 8). After delivery (in a known manner) of the next pipe from store 2 to the chute (see Fig. 9), the latter moves from the position Pa to the position Pb, i.e., the chute issues the next pipe to the wellhead to the position, convenient for the grab to catch the pipe (see Fig. 10) with the subsequent transfer to the vertical position for the descent into the well. The subject matter of the invention 1. An installation for receiving, accumulating and dispensing well pipes in a horizontal position during carrying out lifting operations, comprising mounted on the base of an accumulation tank for pipes arranged parallel to the magazine a pipe receiving chute equipped with rotary cams for dropping a pipe from it and a feed mechanism for transporting pipes from the chute to the magazine and vice versa, characterized in that, in order to automate the process of feeding the pipes from the wellhead to the magazine and vice versa, the chute is installed with the possibility of longitudinal movement relative to the magazine, and the rotary cams are kinematically connected with the chute in such a way that they drop the pipe on the feeding mechanism at the end of the path of movement of the chute. 2. Installation under item 1, characterized in that each cam is rigidly fixed on the vertical axis, which is embedded in the base and has a horizontal lever that passes through a slot in a vertical plate attached to the chute, 3. Installation on PP. 1 and 2, characterized in that the chute is provided with rollers mounted on rails arranged on the base.

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