SU1500900A1 - Sampler - Google Patents

Abstract

This invention relates to a technique for drilling subsea wells and sampling in loose rocks from low-tonnage boats. The aim of the invention is to increase work safety by simplifying operation. The sampler includes a vibratory driver 1, a core set 2 with a shoe 3 and a support assembly comprising a cylinder 4 connected to the upper links of 5 legs connected by hinges 6 to the lower links of 7 legs and to the supporting ring 8. The upper links of the legs are connected by hinges 9 the cylinder 4, and the lower links 7, the hinges 10 with the support ring 8. The movable sleeve 11 is provided with a locking element cooperating with the cylinder 4. The cylinder 4 is equipped with a stopper mechanism and a fixing unit and is connected by flexible cables 18 to the ship's side. During the descent of the sampler overboard on the cargo cable 26, the upper and lower legs of the legs have a vertical position. At a predetermined depth, the locking mechanism in the cylinder 4 is actuated by flexible cables 18 and the legs are placed in a horizontal position. In this position, drilling is performed, after which the sleeve 11 is lowered on the cargo cable 26 until it contacts the cylinder 4, captures it with a locking element and, when the sampler is raised to the side, takes the legs into a vertical position. The use of the invention improves the safety of work at sea and reduces the time spent on tripping. 2 hp ff, 5 ill.

Description

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ring 8. The movable sleeve 11 is provided with a locking element that interacts with the cylinder 4. The cylinder 4 is provided with a locking mechanism and a fixing unit and is connected by flexible cables 18 to the ship's side. During the descent of the sampler overboard on the cargo cable 26, the upper and lower legs of the legs have a vertical position. At a predetermined depth of 10, using the flexible cables 18, the locking mechanism in the cylinder 4 is activated and the arms are transferred.

in a horizontal position. In this position, drilling is performed, after which the sleeve 11 is lowered on the cargo cable 26 before contact with the cylinder 4, captures it with a locking element and, when the sampler is lifted aboard, puts the legs into a vertical position. The use of the invention makes it possible to increase the safety of work at sea, and reduces the time spent on lifting operations. 2 hp ff, 5 ill.

The invention relates to a technique for drilling subsea wells and sampling in loose rocks from low-tonnage vessels,

The aim of the invention is to increase work safety by simplifying operation.

Figure 1 presents the proposed sampler in the process of descent, General view; figure 2 - the same, in the process of lifting; in Fig. 3 — node 1 in FIG. I (cylinder with fixing nodes and sleeve before lifting — on the left and the same cylinder with locking mechanism and sleeve) on the moment of descent — on the right), in FIG. 4 - descent of the sampler with open support; fig.Z - sampler in the process of drilling.

The sampler consists of a vibrator unit 1, a core set 2 with a shoe 3 and a support unit including a cylinder 4, the upper links of 5 paws connected by hinges for 6 seconds; remove the links of 7 legs and the support ring: finger 8. The upper links of the legs of the hinges 9 are connected to cylinder 4, the lower parts of the legs are connected by hinges 10 to the support ring 8. Above the cylinder 4, there is a sleeve 11 with a locking element 12, type of event. In the upper part of the vibrator 1, a thrust adapter 1 3 is installed. The support ring 8, cylinder 4, sleeve 11 is movable relative to the vibrator 1 and the column kit 2, the support ring 8 being interoperable with the shoe 3. The cylinder 4 is provided with a stopper mechanism, including stoppers 14 mounted on axles 15 sockets 16 for stoppers 17 connected

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cables 18 with the vessel’s side (not shown). Cylinder 4 also has fixing units consisting of housings 19 with springs 20 and latches 21. Ratchets 22 are mounted on housings 23 on housings 19, which fix the shanks of 24 support legs. In this case, the housings 19 of the fixation units have a free stroke H relative to the cylinder 4. The vibratory driver 1 is connected by a power line 25 to the ship’s side (not shown). Sleeve 11 is connected by a cargo cable 26 to a winch located on the vessel.

The sampler works as follows.

By lowering the sampler to the bottom of the reservoir, the stoppers 14 are installed in a vertical position, the entrance to the groove of the sleeve 11, and fixed in this position by the plugs 17 placed in the slots 16 (on the right side of FIG. 3). During the descent of the sampler overboard of the vessel, on the cargo cable 26, the vibratory pile driver 1 and the column set 2 hang with a thrust adapter 13 on the sleeve 11, the fixing element 12 of which with the help of the stoppers 14 holds the support cylinder 4. In this case, the upper legs 5 and the lower legs 7 are in a vertical position (Fig. 1). At a predetermined length of the cables 18, the depth of the plug 17 is pulled out of the slots 16, releasing the movement of the stoppers 14 relative to the axes 15. The support under its own weight moves downward relative to the column set 2. The support ring 8 rests on the shoe 3, and the cylinder 4, moving down, opens on the hinges 9 and 10 the legs of the support node (Fig. 4). In this form, the sampler is placed on the ground

Moreover, the movement of the cylinder 4 relative to the column set 2 in the presence of certain irregularities on the ground is prevented by the ratchet 22. The ratchet 22 when opening the support, deviating relative to the axis 23, allows the shank 24 to enter. deep into cylinder 4, after which it occupies the initial position, without giving the opportunity for the {ostovik 24 to go back.

In the process of drilling (Fig. 4), energy is fed through power line 25 from the ship’s side to the vibratory pile driver 1, and the cargo cable 26 is released, releasing the stroke for free insertion of the core set 2 into the grunts,

work safety due to both the descent and the sampler bearing on a compact folded cable for use by the tilters, as well as for tripping and lifting of the drilling vessel, and

0 the support opens out beyond this depth. In addition to this, sampling without removing the support columns, which significantly

Claims (3)

) 5 times for tripping Formula izob . Sampler, von kit and support  After the end of the drilling process, the 20-de rolling cylinder the winch on the vessel stops, as a result of which the sleeve 11, connected to the winch, with the cable 26, moves down and engages with the fixing units of the cylinder 4 by means of the fixing element 12, which passes through the latch 21 equipped with a spring 20. In the process of lifting the sampler aboard the vessel with a cargo cable 26, the sleeve 11 with its locking element 12 contacts the latch 2 and., due to the presence of stroke H (left in Fig. 2), moves the housing 19 on which the ratchet 22 is attached, thereby freeing the stroke for the tail and the support legs 24. When the sampler is lifted, the sleeve 11 rests on the thrust adapter 13 and the core set 2 is removed from the well. In this case, the support ring 8 is moved relative to the column set 2 and the support legs again occupy the initial position in the upper part of the sampler (Fig. 2). The use of the proposed technical solution enhances the safety of work due to the fact that both during the descent and during the recovery of the sampler, the support is in a compact folded form suitable for using various machines and also for carrying out tripping operations through the shaft of the drilling vessel and account of what the support is deployed outside the vessel at a predetermined depth. In addition, servicing of the sampler is possible without removing the core set from the support, which significantly reduces hoisting time. Invention Formula . Sampler, including a column kit and a reference node in the visor paws and a fixing unit fixed on it, characterized in that, in order to manage the work safety by simplifying operation, the sampler is equipped with a sleeve and a support ring, movably mounted on the column set, each of the legs is provided with hinges, made of two links, connected interconnected, and with the free ends, respectively, with a movable cylinder and a support ring, the sleeve is provided with a locking element, and the cylinder is provided with a locking mechanism and assembly. fixing. 2, The sampler of claim I, in that the stopper mechanism is provided with flexible connections and stoppers mated to traffic jams. 3. The sampler according to Claim 1, which is based on the fact that the fixing unit is equipped with a casing installed in a movable cylinder with the possibility of vertical alternation, spring-loaded latches and ratchets, coupled with the shanks of the legs. eleven 18 Fig.Z H