SU1693227A1 - Device for lifting and lowering equipment in boreholes - Google Patents

Abstract

The invention relates to drilling equipment and is intended for the tripping of drilling and tubing pipes and pump rods during drilling and repair of wells. The purpose of the invention is the acceleration of round-trip operations in wells. On tower 1 with balcony 2, a crown block is installed, connected by parallel branches of a pulley rope (TC) 5 with a forked pulley block. Tsensl with about about OJ yu VI

Description

1

Trator 8 has a notch and openings 15. In openings 15 there are rollers 10 and folding stoppers with locks. The centralizer 8 is mounted for movement along the branches of the TC 5 with the rollers 10 and rigid guides 7 pivotally suspended from the crown block. On the tower 1 is installed node 13 fixation of the centralizer 8 in the designated from the axis of the well position. The centralizer 8 is installed with the possibility of coverage by openings 15

branches of TC 5 in its working position and with the ability to interact with the node 13 when deviating from the axis of the well. The height of installation of the assembly 13 on the rig corresponds to the initial working position of the centralizer 8. When performing work not related to the vertical placement of the pipes, the center-, torus 8 and guides 7 are retracted from the well axis. 1 hp ff, 4 ill.

The invention relates to drilling equipment and is intended for use when carrying out tripping operations of drilling and suction pipes and sucker rods during drilling and well repair,

The purpose of the invention is to accelerate tripping operations.

Figure 1 presents the proposed installation, the overall look; FIG. 2 shows a centralizer and a centralizer retainer, top view; on fig.Z - roller and limiter; figure 4 - installation, axonometric.

The installation contains a tower 1 with a balcony 2, in the upper part of which a crown block 3 is installed, connected with a forked traveling block 4 with parallel branches of a traveling rope 5. Elevator 6 with a closed contour is suspended on the traveling block 4. Rigid guides 7 are suspended from crown block 3, the lower ends of which have the ability to move in the horizontal plane. At the lower ends of the guides 7 there is a centralizer 8, which, due to the presence of the carriages 9, has the possibility of vertical movement along the guides 7, and the presence of the rollers 10 - along the branches of the talted rope 5. On the case of the centralizer 8, talanted stops 11 are installed. A detachable block (shutter with roller), which is held in working position by means of a lock 12, the body of the centralizer 8 is made in the form of an envelope branch of the hoop rope 5. To hold the centralizer 8 in the position deviated from the well axis 1 is shke fixing unit 13 centralizer 8 disposed at a height corresponding to the original (lower) operative position centralizer 8 disposed on the abutments of the vertical guide 7. Node 13 semiautomatic fixing centralizer 8: installation centralizer

8 in it occurs automatically, and the release - remotely from the balcony 2 of the upper worker through a lever system and ta 14.

The centralizer 8 is made with openings 15, has a central hole 16 and is installed with the possibility of covering these openings 15 branches of the pulley rope 5 in its working position and with the ability to interact with the fixing unit 13 when deviating from the axis of the well. The rollers 10 and the limiters 11 are installed in the openings 15 of the centralizer 8.

The installation works as follows

The tubing is being lifted. Elevator 6 picks up the pipe string under the sleeve and lifts it. When the traveling block 4 is moving upwards, it reaches the level of the placement of the centralizer 8 and is joined to its receiving cone. Docking is ensured due to the presence of a permanent connection of the centralizer 8 and the traveling block 4 by means of the branches of the pulley rope 5 through the rollers 10 and the terminators 11 of the pulley rope 5. Since the ends of the guides 7 on which the centralizer 8 is placed, have the ability to move in horizontal then the centralizer 8 and the traveling block 4 are constantly coaxial with any movements of the latter, which guarantees the normal docking of these nodes and the implementation of the descent - ascent process with the combination of operations.

The traveling block 4 rises together with the centralizer 8 until the next coupling connection is received from the well, the column is mounted on a special slider (not shown). After this, the traveling block 4 begins to move down along with the centralizer 8, the direction itself is lifted by the pipe, closed in the elevator 6. The upper end of the column passes through the traveling block 4 and falls into the hole of the centralizer 8, where and

centered on subsequent operations. Descending, the centralizer 8 with carriages 9 sits on the stops of the guides 7, where it remains, and the traveling block 4 continues its downward movement. Simultaneously with the descent of the elevator b, the threaded connection is unscrewed. At the end of unscrewing, the elevator 6 is lowered below the column coupling, the unscrewed tube (candle) is lifted by means of a special slider (tube holder) and, opening the centralizer latch 8, is transported to the magazine. The column is lifted to the length of the next pipe (candle) and unscrewed. The process is repeated.

The descent of the column is carried out in reverse order ....,

After completion of the pipework, the installation is re-adjusted to work with rods, either for work in the well or at the wellhead, i.e. for works not related to vertical placement of pipes.

The re-adjustment consists in releasing the centralizer 8 from communication with the branches of the hoist rope 5 and deviating it from the axis of the well with the guides 7.

For this, the traveling block 4 descends below the level of the balcony 2, the centralizer 8 remains mounted on the lower ends of the guides 7. The connection of the centralizer 8 to the branches of the rope cable is carried out by means of the rollers 10 and the stops 11 of the roller cable 5. In the closed position, the stop 11 holds the lock 12. To open the limiter 11, it is necessary to open the lock 12, and it closes automatically. The number of rollers 10 and limiters 11 can vary depending on the equipment of the pulley system, the mass of the centralizer and the pulley block, the dynamic indicators of the pulley system, and so on, but not less than two.

To open the stops 11, the lock 12 opens. The flaps turn inside the centralizer housing, after which the centering 8, located at the lower ends of the guides 7 suspended from the crown block 3, deviates from the borehole axis until it reaches the central fixation unit 13, where mounted on the latch. As a result, the centralizer 8 is excluded from the process and completely frees the working space in the opening of the upper working balcony. To increase

the effect simultaneously with the deviation of the centralizer 8 and the guides 7 also remove the guide grooves placed in the upper balcony opening of the working side parallel to the side faces of the tower in which the lower ends of the guides 7 are in working position.

During the transition to works associated with vertical pipe placement during the production of open-area synthetic gas, the centralizer 8 and guide rails 7 must be returned to the working position on the well axis. For this, the traveling block 4 descends below the level of the balcony 2, from the balcony 2 of the upper workman, after thrust 14, the emphasis of the fixation unit 13 of the centralizer 8 rises through the lever system, after which the centralizer 8 with guides 7 returns to its original position under its own weight. The upper worker checks the installation of the centralizer 8 with respect to the branches of the pulley rope 5, closes the stops 11 (flaps of the separable blocks) on the centralizer 8, and the locks 12 are closed automatically. The centralizer 8 is ready for operation.

Claims (2)

Claim 1. An installation for running tripping operations on wells, comprising a tower with a balcony, connected with parallel branches of a tandem rope crownblock and a forked traveling block with an elevator, centralizer with a central hole, cut-out, rollers and restraints mounted for movement along the branches of the pulley rope and rigid guides hingedly mounted to the crown block, characterized in that, in order to accelerate the descent and lifting operations, it is equipped with a centralizer fixing unit mounted on rig, centralizer is made with openings and is installed with the possibility of covering these branches of the branches of the rope rope in its working position and with the ability to interact with the fixation unit when deviating from the axis of the well, rollers and limiters are installed in the centralizer openings, and . 2. Installation pop. 1, distinguished by the fact that the installation height of the lock on the tower corresponds to the initial working position of the centralizer) eleven Fig.Z ft Fy Editor I.Gorn Compiled by A.Svistunov Tehred M.MorgentalKorrektor N.Korol at H roll at