SU929833A1 - Drilling tool - Google Patents

Description

The invention relates to a mining case, namely, drilling tools for expanding wells.

A drilling rig is known, comprising a housing with several spindles rotating in it, to which percussion mechanisms with drilling crowns 1 are attached.

The closest to the invention in its technical essence is the drill bit, the contents of the body, and several symmetrically located on the periphery of the percussion mechanisms, placed in glasses with bearing assemblies, in which spindles are placed, connected to the corpuscle of percussion mechanisms 2.

A disadvantage of the known drilling rigs is the possibility of drilling wells of only circular cross-section, which leads to an increase in the drilling of explosive wells and the associated high consumption of explosives.

The purpose of the invention is to reduce the volume of drilling of blast holes and reduce the consumption of explosives due to drilling of slit wells.

The goal is achieved by providing the drill with an additional central spindle kinematically associated with peripheral spindles via gears.

In this case, the rotational axes of the peripheral percussion mechanisms are located at an angle to the axis of the projectile, and the gears of the spindles are made conical, which allows for drilling helical boreholes.

FIG. 1 shows a drillhole for drilling parallel-coupled wells, a general view; in fig. 2 - the same, top view; in fig. 3 - projectile for drilling helical wells (partially in section), general view; in fig. 4 - the same, top view.

The drill string comprises a 1-box coupled lantern.

Claims (2)

20 pus, made in the form of opposite sides of opposing glasses: central 2 and peripheral 3, in which bearing sleeves 4 are mounted, and hollow spindles - central 6 interlocking with each toothed rims 5 - are attached to them Yes, to the column of rotating drill rods (not shown) and peripheral 7 with attached shock mechanisms 8 connected to them with drill bits 9, whose necks are covered by the ring element 10 and connected to the guide light 1 The design of the projectile in the main version for drilling parallel-well wells is made with a parallel arrangement of the geometric axes of its main parts (stacked peripheral parts of the body, spindles installed in them and attached to the latest impact mechanisms with drill bits) relative to the central geometric axis. according to an additional variant, for drilling, wine wells of the shaped wells are made with intersecting geometric axes of its main parts relative to others g other and the central axis. At the same time, the gear rims of the 5 spindles b are made conical hypoid. Initially attached to the rotating string of drill rods with a percussion mechanism (pneumatic or hydraulic), they drill a central well. Then, the central spindle of the drill string is attached to the rotating c, string of drill rods and inserted with a guide light 1 into the initially drilled (central) well. After that, peripheral wells are drilled — at the same time, two (or three), conjugated with the central one. At the same time, rotation from central center b is transmitted through gear rims 5 by peripheral spindle 7, percussion mechanism 8 with crowns 9, and ring elements 10 through crowns 9 prevent shock mechanisms 8 from displacing into the central well or away from it. The percussion mechanisms during the drilling of peripheral wells receive the energy of compressed air or liquid head from the drill string string through central b and peripheral 7 spindles and holes 11 in them. Drill and fines are removed through central light 1 to the central well. A prerequisite for normal operation of the drill string when drilling downhole wells is the presence of an undercut of the central well, i.e. its output in the downstream development. When using the construction of the projectile according to an additional variant of the drill, the well gets a helical shape in which peripheral wells are arranged along a helical line around the central well. Claim 1. A drilling drill containing core, several symmetrically located on the periphery of the percussion mechanisms, placed in glasses with bearing assemblies, in which spindles are placed, connected to the shells of percussion mechanisms, characterized in that in order to reduce the drilling drilling volumes and reducing the consumption of explosives by drilling slit-hole wells, the drilling rig is equipped with an additional central spindle kinematically connected to the peripheral spindles by means of jagged Sterren. 2. A drilling projectile according to claim 1, characterized in that the axes of rotation and peripheral percussion mechanisms are angled to the axis of the projectile and the gears of the spindles are conical. Sources of information taken into account in the examination 1. USSR author's certificate number 516812, cl. E 21 S 17/00, 1975. 2. USSR author's certificate number 369256, cl. E 21 C 17/00, 1968 (prototype).