SU1615353A1 - Lateral core taker - Google Patents

Abstract

The invention relates to mining, in particular to means for sampling from the walls of a well. The goal is to improve the quality of samples taken from cased wells. The side core receiver contains a housing, which is lowered on a cable, in the guide channel of which a flexible bit is located, kinematically connected by feed and rotation mechanisms with a gearbox with drive shafts and an electric motor. An additional drill with a diamond crown is located inside the flexible drill, while the additional drill has the possibility of longitudinal movement of the relatively flexible drill under the action of an additional feed mechanism made in the form of a screw drive driven through an additional drive shaft with a remote-controlled electromagnetic clutch. Simultaneous rotation of the flexible and additional drill is carried out by the drive shaft of the gearbox through a telescopic and spline connection. As a result of the sequential work, at first flexible and then additional drills produce a separate sampling of the casing with the cement stone and the rock sample from the borehole wall. The samples are successively folded into the body core cavity, located on the outside of the guide hole, through which the drill is extended. 1 hp ff, 6 ill.

Description

The invention relates to mining, in particular to technical means, intended for sampling from the walls of wells.

The whole invention is superior. improving the quality of samples taken from cased wells.

Figure 1 shows the lateral core-sampler, a vertical section; on

FIG. 2 - drill assembly, general view; on ; Fig. 3 shows a core sampler at the moment of curing a sample of a casing with an annular cutter, a section; figure 4 - core sampler in the position of the return ring cutter to its original position, the section; Fig. 5 shows a core sampler in the ejection position of a sample of a casing pipe KZ cavity of an annular mill in

sample-receiving bunker; figure 6 - core sampling from the initial position of the flexible and additional drill, section.

The lateral core collector contains a cable casing 1 (not shown) with a guide channel 2 and a hole 3 in which a flexible bore A. is located. At one end, the bore is equipped with an annular milling cutter 5 with a core 6, which is connected , the other end of the flexible bore is connected to a rotational drive formed by the drive shaft 7 of the gearbox 8. The latter is in turn connected to an electric motor 9 and made with an additional drive shaft 10 to drive an additional feed mechanism formed by a screw transmission whose 11, longitudinal-movable nut 12 of which water-gl 13 is connected with the driven part 14 of the telescopic connection, providing the connection of the shaft 7 with the flexible drill 4. The moment transfer from the shaft 10 to the helical gear 11 is carried out through a remotely controlled - MarHHTH: TO coupling 15 The flexible drill handles mechanism is made in the form of a screw gear 16 connected through a nut (7 lever 18 through rolling support 19 with a flexible drill c. Screw gear through a remotely controlled electromagnetic clutch 20 connected to shaft 21 „

The side core sampler is equipped with a secondary drill 22 with a diamond crown 23 and core drill 24. An additional drill 22 is installed inside the flexible drill 4 with the possibility of longitudinal movement relative to the flexible drill, connected with it by a splined connection 25 and connected with an additional feeding mechanism through a driven a part 14 equipped with a ratchet 26 for injecting fluid into the cavity of the drill; The housing 1 is made with a 7.-rip-off compartment 27. located on the outer side of the guide hole 3, with a pressing mechanism 28 and a channel 29 providing m fluid access from the well into the body cavity

The coring tank works as follows

in a way.

The device is lowered on the cable into the well JIN7 at a specified interval and is pressed against the wall of the well. The rotating motor 9 drives the gearbox 8, which through

The driving shaft 7, the driven part 14, the additional drill 22 and the spline connection 25 transfer the rotation to the ring cutter 5, and the impeller 26 supplies the washing liquid to the fracture zone.

The signal from the surface is activated. Electromagnetic clutch Q 20 Rotating to gear 16 through nut 17, acting on lever 18, imparts translational movement to annular mill 5, as a result of which the sample of casing s pipe is drilled out (Fig. 3). Then, annular mill 5 with casing specimen zoorizes back to its original position

, v After the ego on the signal from the surface. The clutch 20 is switched off. The electric motor 9 and clutch 15 are turned on. At the same time the nut 12 is acting through the carrier 13 on the driven part 14, the rotating additional 6i / p 22 moves progressively in the cavity of the milling cutter 5 compartment 27; Then, a Q crown 23 drills a sample in the rock mass. When the crown 23 reaches its maximum depth, the motor 9 is reversed and the crown with the drill-i sample is given to return the ae-gc to its initial position.

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Claims (1)

1. Side core picker, containing a cable body with a guide channel and a hole, located in the channel guide channels and the hole of the flexible drill and the mechanisms for feeding and rotating the flexible drill in the form of a gearbox with an electric motor and a drive shaft , kzmzyu t telescopic connection with a flexible auger, about the t and n and so that, in order to determine the quality of the samples taken from cased wells, it is equipped with an additional auger with a diamond crown and an additional feed mechanism with remotely controlled e an electromagnetic clutch, the reducer is made with an additional shaft to drive an additional feed mechanism, with the additional drill installed inside the flexible drill with the possibility of longitudinal movement relative to the flexible 27 0we; Figz Phie. FIG. 6