Device for extracting sample out of borehole

FIELD: well research, particularly means for drilling rock sample out of borehole in an airtight manner.

SUBSTANCE: device comprises case and hollow drill arranged in the case and having ring-shaped cutter. Stopper closing cartridge for sample receiving is kinematically linked with the drill by means of transmission mechanism. Transmission mechanism is formed as rotary drum with curved cut made in side surface thereof, deflecting finger and rotary arm. Deflecting finger slides in curved cut and is fixedly secured to drill body. Rotary arm is connected with the drum by one end thereof and with stopper by another end. Rotary arm is connected with stopper by means of mechanical couple including rod with plug. The stopper is arranged in cartridge lid and is made as rotary cylinder. Formed in the cylinder is through channel sized in accordance with the sample to be drilled out. Cylinder is provided with annular gaskets connected one to another by linear members. The rotary arm has an axis of rotation connected to device case.

EFFECT: simplified structure, increased reliability.

3 dwg

 

The proposed device is intended for drilling a rock sample from the borehole walls and deliver them to the surface in the chamber under pressure, equal to the downhole pressure.

Known borehole core sampler, which has a core drill bit, occupying an extended position for taking cores from the lateral wall of the borehole or retracted position for storage of the selected core. Special drive unit provides popping core of bits in the receiving chamber and laying on the core separation ring gasket before removing to the surface (U.S. patent No. 5487433, E 21 In 25/02). The known device does not provide a complete sealing of drilled core.

A device of the drilling core sampler type, which allows you to select the samples of rock from the walls of the well and raise them to the surface in the chamber under pressure, equal to the downhole pressure. The hallmark of the core sampler is cannobianna the camera, which through the connecting channel and the main valve is pushed drilled samples after turning drilling device 90°. After closing campopiano camera due to the action of the main valve pressure remains downhole and unchanged during the ascent core sampler to the surface and transport of samples, in which the Amer, in the laboratory (U.S. patent No. 4950844, E 21 In 49/06).

The disadvantage of the design is its large size. Through the use of rotary drilling device increases the diameter of the core sampler. The complexity of a hydraulic drive system closing campopiano camera, and low reliability of the sealing element makes the design of the core sampler unreliable in General.

The proposed device solves the problem of simplification of construction, improve the reliability of the process of drilling a sealed core, and increase the informativeness of the results.

The task is solved in that the device for sampling pressurized core samples from the borehole wall, comprising a housing and placed in it a drill with a circular cutter, campopiano cassette with overlapping tube, kinematically connected to the holes through the transmission mechanism, which is made in the form of a rotary drum with a curved cutout on the lateral surface and sliding it deflecting finger firmly attached to the body of the drill, and a pivoted lever, one end of which is connected to the drum and at the other end with the overlying tube using a mechanical pair - pin plug, with overlapping tube placed in cover campopiano cartridge and is made in the form of a rotating cylinder, and housego through channel, proportionate vibereview core, in addition, a rotating cylinder provided with seal rings interconnected linear elements, and the rotary lever has an axis of rotation associated with the device.

Figure 1 shows a core sampler in section, figure 2 - cross section along a-a in the initial position, figure 3 - cross section a-a when receiving core.

The device consists of a casing 1 in which is placed kinematically interconnected motor, gearbox (not shown), the drill 2 (hollow) with a circular cutter 3, designed for drilling rock sample (core). At the bottom of the drill 2 is rigidly fixed to the finger 4, which is curved groove of the drum 5. The drum 5 can be rotated around the axis 6 and has a plug 7, a groove which includes a pin 8 fixed to the rotary lever 9, which can oscillate around the axis 10, and ending with a square tip 11. The tip 11 of the articulated with overlapping tube 12 made in the form of a rotatable cylinder having a channel 13, according vibereview core. The tube 12 is placed in the lid campopiano cassette 14 and sealed by the seal 15. The cassette is attached to the removable cover 17, which is installed in the housing 1 core sampler. The seal 15 is placed in the groove in the body of the overlapped tube 1 and is made in the form of two rings 15, interconnected linear elements 16. 18 - clamping lever 19 - seal cap 17.

The device operates as follows: the device is lowered into the borehole, with the drill 2, the presser lever 18 are in their initial position (figure 1), the channel 13 of the overlapped tube 12 is in the closed position (figure 2).

On command from earth descended into the well at a specified interval, the core sampler includes the electric motor, which through kinematics causes the rotation of the annular cutter 3 and hydraulically rotates the clamping lever 18 so that it presses the core sampler to the borehole wall.

Rotary cutter 3 by means of a translational movement of the drill 2 is embedded in the wall of the drilled hole and drills out the rock sample of cylindrical shape (core).

When directional movement drill 2 finger 4 rotates the drum 5, which fork 7 rotates the lever 9 about the axis 10 with the rotation of the overlapped tube 12 around its own axis at 90°channel 13 is set in the “open” position (figure 3), indicating the cavity campopiano cassette 14 with the cavity of the device. Drilled core through the channel 13 enters the cassette 14. After that, the motor device reversiruyut. The presser lever 18 and the drill 2 is returned to its original position. When the drum 5, turning in the opposite direction, set the assigned channel 13 overlying the tube 12 in the closed position (figure 2). The device rises to the surface, while in the cavity of the cassette 14 is stored pressure conditions point of coring.

Device for sampling pressurized core samples from the borehole wall, comprising a housing and placed in it a hollow drill with a circular cutter, campopiano tape overlying the tube, wherein the tube is kinematically connected to the holes through the transmission mechanism, which is made in the form of a rotary drum with a curved cutout on the lateral surface and sliding it deflecting finger firmly attached to the body of the drill, and a pivoted lever, one end of which is connected to the drum and at the other end with the overlying tube using a mechanical pair - pin plug, with overlapping tube placed in the lid campopiano cartridge and is made in the form of a rotating cylinder having a through channel, proportionate vibereview core, in addition, a rotating cylinder provided with seal rings interconnected linear elements, and the rotary lever has an axis of rotation associated with the device.



 

Same patents:

The invention relates to geophysical engineering, in particular to the means for perforating and sampling from the borehole walls

The invention relates to the mining industry, to technology for drilling and sampling of rock from the walls of boreholes

FIELD: well research, particularly means for drilling rock sample out of borehole in an airtight manner.

SUBSTANCE: device comprises case and hollow drill arranged in the case and having ring-shaped cutter. Stopper closing cartridge for sample receiving is kinematically linked with the drill by means of transmission mechanism. Transmission mechanism is formed as rotary drum with curved cut made in side surface thereof, deflecting finger and rotary arm. Deflecting finger slides in curved cut and is fixedly secured to drill body. Rotary arm is connected with the drum by one end thereof and with stopper by another end. Rotary arm is connected with stopper by means of mechanical couple including rod with plug. The stopper is arranged in cartridge lid and is made as rotary cylinder. Formed in the cylinder is through channel sized in accordance with the sample to be drilled out. Cylinder is provided with annular gaskets connected one to another by linear members. The rotary arm has an axis of rotation connected to device case.

EFFECT: simplified structure, increased reliability.

3 dwg

FIELD: nuclear engineering.

SUBSTANCE: invention relates to devices designed to cut cores from well walls or channels and can be used in nuclear engineering to cutting graphite cores from channel-type uranium-graphite reactor lining. Proposed device comprises bearing rod with rotary drive, tubular cutter, and tubular cutter rotation-and-feed mechanism. The latter consists of drive bevel gear interacting with hollow gear shaft and fixed sleeve with outer thread arranged inside said hollow gear shaft. Note here that tubular cutter represents a sleeve with inner thread screwed on aforesaid fixed sleeve.

EFFECT: ease of cutting complete cores over entire width of graphite block at 90° to block location without using whatever means capable of destructing or fouling cores.

2 dwg

FIELD: mining.

SUBSTANCE: device includes bearing rod with supply wheel and rotary drive, driven hollow shaft, drilling head, pipe-like mill connected to suction device by channel system, mechanism of rotation and simultaneous supply of pipe-like mill. Drilling head is provided with channel hole made in upper part parallel to its axis, and in lower part - at angle α in range 5÷35° relative to its axis. Pipe-like mill contains outbreaker of cores. Mechanism of rotation and simultaneous supply of pipe-like mill includes supply wheel, at least two transmitting sleeves and driven hollow shaft connected with each other and with pipe-like mill by means of ball joint drive containing hollow joints with cone cavities on ball-shaped head, nutted-up stops are located in the cavities. Channel system is formed by pipe-like mill, hollow joints, transmitting sleeves and driven hollow shaft.

EFFECT: enlarging manufacturing capabilities and field of application, improving core quality.

2 cl, 3 dwg

FIELD: mining.

SUBSTANCE: system for core drilling of an underground bed that surrounds a well shaft comprises: a body of a tool designed for installation in the well shaft near the shaft tunnelling bed for core extraction, a motor, a rotation drive head connected with a motor, a rotary tool. The rotary tool is connected with the rotation drive head with one end and carries a drilling bit on the other end. The drive mechanism comprising an anchor joint for fixation in the well shaft and an axial drive for displacement of the tool body and the rotary tool. The tool comprises a guide for pushing the rotary tool aside from the well shaft into the surrounding bed. At the same time the rotary tool is a tubular tool of core drilling, which carries a circular drilling bit. The hollow shaft stretching from the rotation drive head into the tool body. The motor is connected with the external surface of the hollow shaft for the rotation head drive. Also comprises a coupling of alignment linkage that surrounds the shaft.

EFFECT: increased operational reliability of a system.

FIELD: mining.

SUBSTANCE: device for local drilling of reactor setting graphite column tracts includes bearing rod with rotary drive, driven shaft, mechanism of rotation and simultaneous supply of cutter. The bearing rod is connected through a shaft disposed inside with a cylindrical cutter head consisting of three conical wheels, one of which is integral with the shaft and fixed in the housing on bearings, and the second conical wheel is meshed with the first one and is mounted on the axis perpendicular to the first wheel axis. The third conical wheel mounted on the needle rollers on the axis, which has a possibility to pivotally oblique from the axis of the rod and is coupled to the second wheel, is connected to the deflecting cutter axis, which is pivotally connected to a rod that is moved along the shaft axis by a screw-nut pair.

EFFECT: invention makes it possible to carry out local drilling of graphite column tracts, excluding the impact on the graphite masonry.

3 dwg

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