SU987086A1 - Apparatus for taking rock samples from well - Google Patents

Description

The invention relates to mining, and in particular to means for sampling rocks.

Known devices for sampling rock by crushing a soil carrier [1].

For the introduction of the soil carrier in such devices, feed mechanisms of drilling rigs are used, which limits the crushing force and narrows the scope.

More sophisticated sampling devices, which are fixed directly in the wellbore.

Such a device for sampling rock from wells is known, comprising a housing connected to a lifting cable, anchor shoes on pivotally attached upper and lower levers, a rod with a soil pump, and also a mechanism for moving shoes and soil pump [2].

However, the need to use a hydraulic drive to crush the soil carrier and secure the body in the well reduces reliability and complicates the design of this device.

The purpose of the invention is to simplify the design and increase reliability.

This goal is achieved by the fact that the device for sampling rock from wells, containing a housing connected with a lifting cable, anchor shoes on a pivotally articulated top and bottom rods, a rod with a soil carrier, and also a mechanism for moving the shoes and soil carrier, is equipped with a movable and spring-loaded relative the case with a ring and pulleys for a cable, mounted respectively on the ring and on the rod, while the hinges of the lower levers are mounted on the ring, and the movement mechanism is made in the form of a traction closed loop connected with demnym rope and pulleys envelope inner side of the ring, and the outer - the pulley shaft.

In FIG. 1 shows the proposed device, a General view; in FIG. 2 — section A — A in FIG. I (at the place of installation of the shoe).

The device consists of a housing 1 and a ring 2, between which anchor shoes 3 are mounted, on the outer surface 20 of which knives 4 are made. The upper arms 6 are attached to the housing 1 by hinges 5, and the lower arms 8 to the ring 2 through the hinges 7, and the hinge the lever 6 is mounted on the bracket 9, which simultaneously serves as a support for the spring 10 located between. the housing 1 and the ring 2 and sets the ring 2 to its lowest position, and the shoes 3 - in the original (inoperative) position. On the ring 2 are fixed rods 11 having pulleys 12 in their upper part, and on the housing 1 the pulleys 13 of the envelope are rigidly fixed around the inner side of the closed loop 14.

At the upper end of the rod 15, a pulley 16 is installed, which is enveloped by the outer side of the loop 14. The body of the soil pump is connected to the lifting cable 17 through the pulley 18 at the lower end of the rod, the soil pump 19 is installed.

Auxiliary rollers are also fixed on the housing 1 for removing the device from the well.

An anchor device operates as follows.

The device is lowered into the studied well and inside it is installed a soil carrier 19 with a rod 15 and a roller 16. A loop 14 is put on the pulleys 12, 16 and 18, as shown in the drawing. When the cable 17 is pulled by a winch, the pulley 18 rises, catching the pulley 16 and the rod 15 down, and the soil carrier 19 into the studied formation, while the pulleys 12 also tend to move upward, raising the rods 11 and ring 2 to the upper position, compressing the springs 10. The force Compression of all springs does not exceed the weight of the lifting parts. When the ring 2 moves upward, the levers 6 and 8 extend the shoes 3 in a radial direction from the axis of the well, which, bursting into the walls of the well, fix the device, taking on the reactive force from crushing the soil carrier. The magnitude of the spacer forces depends on the axial force trapping the soil carrier. This circumstance ensures reliable operation of the device in any soil. At the end of the work, the device is lifted from the well, throwing the loop 14 onto the rollers mounted on the housing 1 of the device.

The proposed device provides high reliability of its work in any composition of soils and allows you to work in wells whose walls are fixed by casing pipes.

Claims (2)

(54) DEVICE FOR BREEDING SPECIES FROM WELLS The invention relates to mining, namely to means for sampling rock. BACKGROUND OF THE INVENTION Rock sampling devices are known by crushing a submersible 1. For introducing a submersible into such devices, drilling mechanisms feed mechanisms are used, which limits the pressing force and narrows the scope. More sophisticated sampling devices are attached directly to the wellbore. Such a device for sampling rock from wells is known, comprising a housing associated with a lifting cable, anchor shoes on pivotally attached upper and lower arms, a rod with a ground bridge, as well as a mechanism for moving the shoes and ground pipe 2. However, the need to use a hydraulic drive to crush the ground plane and securing the housing downhole reduces the reliability and complicates the design of this device. The purpose of the invention is to simplify the design and increase reliability. This goal is achieved by the fact that a device for sampling rock from wells, containing a housing associated with a lifting cable, anchor shoes on pivotally attached upper and lower arms, a bar with a ground plane, and also a mechanism for moving the heads and the ground plane, is equipped with a spring and a spring relative to the body with a ring and pulleys for the cable, fixed respectively on the ring and on the rod, while the pins of the lower arms are mounted on the ring, and the movement mechanism is made in the form of a pull closed loop connected with a lifting cable and an envelope of the inner side of the pulleys of the ring, and the outer - the pulley shtangp. FIG. 1 shows the proposed device, the total front; in fig. 2 - section A - A in FIG. 1 (at the place of installation of the shoe). The device consists of corus 1 and a ring 2, between which anchor shoes 3 are installed, on the outer surface of which knives 4 are made. The hinges 5 fix the upper arms 6 to the body 1, and through the hinges 7 the lower arms 8 to the ring 2, while the hinge the lever 6 is mounted on a bracket 9, which simultaneously serves as a support for the spring 10 placed between the body 1 and the ring 2 and sets the ring 2 to the lowest position, and the bashmaks 3 to the initial (non-working) position. On ring 2 there are fasteners 11, having pulleys 12 in their upper part, and pulleys 13 around the inner side of a closed loop 14 are rigidly fixed on case 1 Pulley 16, which bends around the outer side of loop 14, is mounted on the upper end of rod 15. With a lifting cable 17, a submersible 19 is mounted through the pulley 18 at the lower end of the rod. Auxiliary roller 11 is also attached to the housing 1, which are designed to remove the device from the well. Anchor device works as follows. The device is lowered into the test well and a gutter 19 with a rod 15 and a roller 16 is installed inside it. Loops 14 are worn on the pins 12, 16 and 18, as shown in the drawing. When the cable 17 is tensioned by the winch, the pulley 18 rises up, crushing the shchik 16 and the rod 15 down, and the ground chipper 19 goes to the formation under study, while the shchiky 12 also moves up, lifting the rod 11 and the ring 2 to the upper position, compressing the spring 10. The compression force of all springs does not exceed the weight of the parts being lifted. When the ring 2 moves upwards, the levers 6 and 8 push the shoes 3 radially away from the axis of the well, which, ripping into the walls of the well, fix the device, perceiving the reactive force from the crushing of the submersible. The magnitude of the thrust effort depends on the axial force, crushing the submersible. This circumstance ensures reliable operation of the device in any soils. At the end of the work, the device is lifted out of the well, throwing the loop 14 onto the rollers attached to the device case 1. The proposed device provides high reliability of its operation in any composition of soils and allows working in wells whose walls are fixed with casing. An invention of a device for sampling rock from wells, comprising a housing associated with a lifting cable, anchor reinforcements on pivotally attached arms above and below, a rod with a ground feeder, as well as a mechanism for changing shoes and a ground track, which is designed to simplify design and increase reliability, it is equipped with a movable and spring-loaded relative to the body ring and pulleys for the cable, fixed respectively on the ring and on the rod, while the hinges of the lower levers are mounted on the ring, and fur nism is formed as a movable traction closed loop associated with p.odemnym rope and pulleys envelope inner side of the ring, and the outer - the pulley shaft. Sources of information taken into account during the examination 1. B. Rebrik B. Drilling of wells in engineering geological prospectors. M., "Nedra, 1973, p. 223, fig. 64. 2. USSR author's certificate number 332351, cl. E 21 V 49/02, 1970 (prototype). i5 / g y / ,, f6 f5 FIG. / eight (ig.2