SU1227271A1 - Borehole tool - Google Patents

Description

FIELD OF THE INVENTION The invention relates to mining and concerns drill bits with vibrators for core sampling.

The purpose of this invention is to improve the drilling efficiency by excluding longitudinal oscillations simultaneously with the transverse ones.

FIG. 1 shows a drilling rig, general view, in longitudinal section; in fig. 2 is a section A-A in FIG. 1, in FIG. 3 is a section A-A in FIG. 1 (option for channel discharge in the balance and radial axis); FIG. 4 is a section A-A of FIG. 1 (implementation of channels in the balance of the tangential. And radial in the axis).

The drill string contains an adapter 1 with a pressure channel 2, inside which a divider is installed

3 threads. A divider 3 is attached to a lengthwise axis 4 of rotation of unbalance 5, mounted on it by means of a bearing 6 and connected to the turbine rotor 7.

The turbine is formed by the rotor 7, the surfaces of the housing 8 and the divider 3 adjacent to the rotor in the chamber 9. Axis

4 has a discharge channel 10 with an output of 11 to the surface associated with the unbalance 5. The latter in turn has channels 12 with access to the outer and with the entrance on the inner surface adjacent to the surface of the axis 4. Divider 3 reports channel 2 to the turbine chamber 9 and with channel 10 axis 4. Channels 12 and

11 May beat located as rgzdi

both by chord (see Figs. 2, 3, and 4) in order to create an additional torque of the unbalance.

The number of channels 12 and outputs 11, as well as their dimensions, are applied taking into account the type of washing agent and the required vibration parameters.

In the lower part, a rock-breaking tool 13 is attached to the housing 8, which, in the case of drilling with coring, may be in the form of a crown.

The device works as follows.

in a way. I

After assembling and lowering the projectile into the well, a washing agent is supplied to the projectile through the drill pipes. Next, compressed air or flushing fluid through channel 2, divider 3 simultaneously enter channel 10 of axis 4 and chamber 9 of the turbine, causing rotation of the rotor 7. The rotation of the rotor 7 is transmitted to the balance 5 connected to it. Rotating, unbalance 5 causes open and close outlets 11 in axis 4 caused by hydraulic shocks in the flushing fluid flow. Simultaneously with the longitudinal vibrations, transverse ones also occur due to the presence of an unbalanced mass.

The combined effect of vibrations on a rock-destroying tool contributes to more effective destruction of the rock and overcoming resistance to the movement of the projectile.

FIG. /

12

Compiled by B. Aksler. Editor N. Slobod nickname Tehred L. Oleyk Corrector T, Kolb

Order 2242/8 Circulation 548 Subscription

VNIIPI USSR State Committee

for inventions € 1y: y; and discoveries 113035, Moscow, Z-ZZ -Raushska nab., 4/5

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

tpuz.i

Claims (1)

A DRILLING EQUIPMENT comprising a housing, an adapter with an injection channel, a turbine and an unbalance mounted on the longitudinal axis of rotation, associated with the turbine rotor, characterized in that, in order to increase the drilling efficiency by exciting longitudinal vibrations simultaneously with the transverse ones, the unbalance is made with channels having exit on the outside, and the entrance on the inner surface conjugated with the surface of the axis, while the axis is made with a discharge channel, the outputs of which are located on the surface conjugated with unbalance, and in gnetatelnom channel adapter set flow divider informing it with a camera and the turbine with an axis • .gnetatelnym channel. S £ ω s N3 short circuit <1 N3 M