SU1250638A1 - Installation for making holes in earth - Google Patents

Description

one

The invention relates to the construction and can be used for the formation of wells and the consolidation of soils, the installation of anti-seepage curtains, pile foundations, etc.

The aim of the invention is to increase the productivity of work by simplifying the tripping.

In Fig. 1, an installation is given, the general view in Fig. 2 is a telescopic sectional drill string in assembled form; Fig. 3 shows a telescopic sectional drill string in the working position; figure 4 - section aa on fig.Z; on fig.Z - section bb on fig.Z; figure 6 - additional telescopic drill strings in assembled form; 7 - additional drill strings in the working position.

The installation includes a base machine 1 with a boom 2, on which a stand-up column 3 with a telescopic sectional drill string 4 with clamps 5 installed in the walls of sections 6 and equipped with a top propulsion 7, and a bottom with a destructive tool 8 is fixed. part of the column 4 is made hollow and equipped with a swivel 9, and in the rock-breaking tool 8 a through channel 10 is made, which communicates with the cavity of the column 4, with stops 11 with seals 12 installed at the ends of sections 6. Sections 6 of the drill string 4 can be made us, for example, cylindrical or polygonal.

The drill column is provided with longitudinal splines 13, which are inserted into counter grooves 14 of sections 6.

The clamps 5 sections 6 provided with safety elements, made, for example, in the form of ser12

gi with offset center of gravity.

For telescopic section of the drill string 4 can be, for example, coaxially - rigidly attached additional columns 15 of the same design, the lower ends of which are fixed in the rock-breaking tool 8, and their cavities communicated with its through channel 10, the clamps 5 sections 6 are installed only on the outer column 4. The length of sections 6 is the same, and between

ten

15

20

250638

sections of adjacent columns 15, stops 11 with seals 12 are not installed.

The installation works as follows.

Using the base machine 1 installation is transported to the place of drilling. The boom 2 lowers the scraper rack 3 and the drill string 4 on the drilling point. The propeller 7 is turned on, and the drill string 4 begins to rotate. When this rock cutting tool 8 destroys the soil and through the swivel 9 inject the working solution into the cavity of the drill string 4. The working solution enters the well through the through channel 10.

The drill string 4 is sunk into the well when assembled (the stops 11 with seals at the ends of the drill string 4 sections are tightly pressed to each other) ensure the tightness of the gaps between the gaps and prevent the working solution from getting between the gaps. The destroyed soil is carried by the working solution to the surface.

After deepening of the drill string 4 on the length of the section to the swivel

30, the process is stopped, the latches 5 of this section are taken out, and the inner sections are pulled out from the recessed section to the surface. Stops 11 with seals on the ends extended

35 and the remaining sections in the ground are pressed against each other and sealed the gaps between them.

Then the drilling is continued in the same well until the drilling

40 columns 4 are the length of the next section (up to the swivel) and the section of the drill string 4 being buried alternately upon reaching the design depth of the well.

After reaching the design depth of the well bore, the drill string 4

raised above the ground by the value of sec25

and secured in this position. Then remove the clamps 5 sections, push the upper section into the downstream

50 section and secured with latches 5. The process is repeated until the drill string 4 is completely removed from the well.

If, for example, when drilling wells need to use

55 multicomponent solutions, for example, water, air, additives, then additional telescopic sectional drill strings 15 are used.

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Editor M. Nedoluzhenko

Compiled by L. Cherepenkin

Tehred M. Khodanich. Corrector C, Shykmar

Order 4382/24

Circulation 548 Subscription

VNII11I State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Claims (1)

INSTALLATION FOR THE FORMATION OF WELLS IN THE SOIL, including the base machine with a sectional telescopic drill string with power keys, retainers with mating sockets and ring seals of sections, characterized in that, in order to increase productivity by simplifying tripping operations, the ring seals are made with ring stops, while the ring seals are installed on the ends of the sections of the telescopic drill string on the outside, and the ring stops on their inside, and the latch It is in the form of wedges, the response slot which has sections in the walls of the drill string and the power key. 8990531 ns