SU1609950A1 - Cor barrel - Google Patents

Abstract

The invention relates to mining and is intended for sampling rock from a well. The aim of the invention is to increase reliability. The coring device comprises a housing with a crown and a lid. Inside the case, a core receiver (KP) is installed on the suspension unit, which has the possibility of longitudinal movement under the action of shocks made by the case on the gearbox when interacting with the rotating parts of the cam clutch mounted respectively on the housing cover and gearbox. INSIDE KP there are two test-half-tubes, and a shoe at the lower end. The shoe is connected to the gearbox with detachable latches in the form of locking balls placed in the mating holes of the ring shell of the shoe and the lower end of gearbox and installed with the possibility of interaction with the inner surface of the crown in the interval of longitudinal movement of gearbox relative to the body. KP suspension assembly in the housing is made in the form of a nozzle with an anvil interacting with restrictive fingers and located in the axial channel of the housing cover. 1 hp ff, 6 ill.

Description

The invention relates to mining, to devices for sampling rock from wells.

The aim of the invention is to increase reliability.

Figure 1 shows the core tube, the cut; figure 2 - section bb in figure 1; on fig.Z - section bb In figure 1; in fig. 4 - section G-Y in Fig.; In figure 5 - section E d on. figure 1; in fig. 6 is a section A-A in FIG.

The coring device comprises a body 1 with a crown 2 and a key 3 having

axial channel 4 with restrictive fingers 5 fixed in it. Inside the housing 1 there is a fixed core receiver 6 with two probe-receiving half-tubes 7 and a shoe 8.

The shoe 8 is made with an annular shell 9, covering the lower end of the core receiver 6, and is connected with it by detachable locks in the form of locking balls 10, spaced in conjugated holes II and 12, respectively, in the shell and core receiver, while the balls 10 are installed with possibility of interaction with the internal

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the surface of the crown 2 in the interval of maximum movement of core acceptance relative to the body.

The core receiver is installed in the body of the suspension unit - in the form of a 1: 3 socket connected to the core receiver with an anvil U, which is ujero with restrictive fingers 5 v placed in the axial channel 4, II The corollacier has a cam coupling, one part 15 of which is fixed on the lid 3, and on the other 16 on the upper end of the core receiver 6. The half-tubes 7 are centered in the center of the Acceptors in the middle part of the projection 1 | 1, and their upper ends are fixed with a ring lock. Kolonkovy CI p d works in a way that

 The assembled machine is lowered into the well ka barrel (column not shown) into the well and is set on the bottom with a crown 2 and shoe 8. Then the flushing pump is turned on and the rotation of the drill string is applied and create an axial load on the bottom.

At the same time, the core receiver is braked by the boot of the bottom and does not rotate. The cam portion 15 on the housing 15, moving across the chute 16 on the core clamp 6, lifts the housing 1 with the crown 2 to subsequently strike the anvil 14 and the core receiver 6 with the shoe

com 8.

After a sample is taken, it is fixed in the half-tubes of the core receiver by the method of dry grouting. After this, the screen is lifted up. The wellhead is closed with a flap, set up with a shoe on the brush and remove the fingers 5, then lift the shell of the projectile over the shield. The anvil 14 moves down to the stop in cover 3. In this position the balls 10 extend beyond the crown

2, after which they are removed. Next, striking the upper end of the shell 9 of the shoe 8 knocks the latter from the end of the core receiver 6. Then, using the hooks of the sling (the line is not shown) fixed on the frame of the drilling machine, half of the core 7 are pulled out.

Claims (2)

1. A corral projectile containing a crown with a crown and krppka having an axial channel with restrictive fingers fixed in it, a movable core receiver with two probe-receptive half-shells and a shoe mounted inside the body; with core receiver, located in the axial channel of the anvor cap, with an anvil and installed with the possibility of interaction with the limiting fingers, as well as the cam clutch, one part of which is fixed to the keyhole and a friend at the upper end of the core receiver, which is similar to the fact that, in order to increase reliability, the shoe is made with an annular ring enclosing the lower end of the core receiver, while the shoe is connected to the core receiver by detachable locks in the form of locking balls located in the mating holes of the annular shell and the lower end of the core receiver and installed with the possibility of interaction with the inner surface of the crown in the interval of the longitudinal movement of the core receiver relative to the body. 2. A columnar according to claim 1, characterized in that the bagmack is fixed on one of the half shells. l 13 ifl CB eight Fig.Z LA Figb Editor K.Krupkina Compiled by V.Axler Tehred MoIorgental 9 eight eight 5 Proofreader M. Demchik