SU1453016A1 - Planetary boring drill - Google Patents

Abstract

The invention relates to a drilling technique. The goal is to increase the efficiency of the drill by improving the bottom hole cleaning while simultaneously accelerating the discharge of the sludge. Downhole motors 3 are rigidly connected to the lower 2 and upper 1 by the cross-arms of the drill, on the shafts 4 of which rock-breaking tools (AT) 5 are fixed. 7. The bottom of the FP 7 has sleeves 8 in which the shafts 4 are mounted coaxially by means of bearing supports 11. At the exit points of the shafts 4 in the bottom of the FP 7 there are recesses 9, congruent to the outer surface of the PRI 5. The outer lateral surface of the FP 7 has screw tapes and bottom nap equaling elements 13 in the form of wheels. During the operation of the drill, the flushing fluid in the narrow space between the bottom of the FP 7 and the bottom and between the casing of the FB 7 and the walls of the well does not turbulence and has a high speed, which contributes to better removal of the rock from the bottomhole zone. After the end of the voyage, the drill is lifted and the WB 7 is fixed on the latches 6 in the extreme upper position. Then, unattach PRI 5, install the bottom of the NB 7 on a rigid base and unfasten the rods 10. Then the drill is lifted, and the shafts 4 come out of the sleeves 8, and the NR 7 on the guide elements 13 are pushed away from the well and freed from cuttings. 5 hp f-ly, 4 ill. 3 (L

Description

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The invention relates to a drilling technique and can be used in the drilling of large diameter wells and shafts for various purposes.

The aim of the invention is to increase the efficiency of the drill by improving the cleaning of the bottom hole while accelerating the discharge of the sludge.

FIG. 1 dan is a planetary auger with sludge collector, o bs view; in fig. 2 - auger, side view; in fig. 3 - a drill with a slurry recipient, fixed in the extreme upper position and removed with rods and rock-breaking tools; in fig. 4 - a drill with a slurry recipient, equipped with axial bearings and screw tapes, fragment.

The planetary drill consists of the upper 1 and lower 2 traverses, to which the turbo-drills 3 are rigidly connected with the shafts 4 and rock-breaking tools 5 fixed to them. Between the lower traverse 2 and the rock-breaking tools 5, they can be moved along the shafts 4 and fixed to the extreme positions x through clamps 6 installed sludge collector 7. The latter is equipped with sleeves 8, placed on it rigidly coaxially with the shafts 4 turbo-drills. In the lower part of the liner are broadened 9, corresponding to the outer configuration of the rock-breaking, their tools 5. The slurry collector 7 is suspended on the lower traverse 2 with help of t g 10, which can be made flexible. The sleeves 8 of the uuiaMO receiver can be equipped with radial bearing supports 11 and axial bearing supports 12. The slurry collector can have a skid 13 in its lower part or mounted on the axis of rotation of the wheel 14. The outer part of the slurry receiver can be equipped with screw tapes 15.

Planetary drill works as follows.

When the bottomhole is operating, the szhalamo-receiver 7 is suspended on rods 10 and is in its lowest position. The flushing fluid in the narrow space between the bottom of the sludge receptacle and the bottom and between the sludge receptacle body and the borehole walls has a high speed of movement, therefore it intensively removes the drilled rock from the bottomhole zone. In addition, in this space, the washing liquid is not turbulent, since it is not affected by the portable damage of the turbo-drill shafts. This facilitates the movement of fluid by the orderly jets and further improves the flow of P1lama into the slurry receptacle.

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After the end of the voyage, the auger is raised to the surface, the sludge pick-up is raised, peak 7, to the extreme upper position and secured to the latches. Then, rock-breaking tools 5 are unfastened, the drill is lowered onto the overlapped wellhead so that the plate collector 7 is placed on a rigid base on its bottom, the latches are removed and the drill is lifted in such a way that its shafts completely come out of the sleeves 8. the winches on the skid x 13 or the wheels 14 are pulled away from the wellhead and freed from the head.

In order to accelerate the work, the filled sludge collector can be immediately replaced with the cleaned sludge, immediately mounted on the drill and lowered into the well. At the same time, cleaning of the filled sludge collector from drill cuttings is combined with drilling.

Claims (6)

1. A planetary auger, including upper and lower traverses, downhole motors rigidly connected to the traverses, on the shafts of which rock-breaking tools are fixed, and a removable sludge collector installed with the possibility of vertical movement and fixation, characterized in that by improving the cleaning of the bottom, while accelerating the discharge of the sludge, the sludge collector is placed between the lower crosshead and rock-destructive tools with the possibility of fixation in the extreme upper position , Retainers are formed as rods, while the bottom has shlamopriemnika sleeve in which the shafts are mounted coaxially downhole motors, the output shafts in the ground at the bottom of the recess formed congruent to the outer surface of the threshold dorazrushayuschih tools. 2. A drill according to Claim 1, characterized in that the fastener bars are made flexible. 3.Bur on PP. 1 and 2, characterized in that the shafts of the downhole motors are mounted on the sleeves by means of bearing supports. 4.Bur on PP. 1-3, characterized in that the outer side surface of the lam-receiver has screw tapes. 5. Bur on PP. 1-4, characterized in that the oii is provided with guide elements placed on the bottom. 6. A drill according to Claim 5, characterized in that the guide members are made in the form of wheels. ff 15 Fy